US2120647A - Door lock - Google Patents

Description

June 14, 1938. r M s-r 2,120,647

DOOR Lcx Filed Sept. 8, 1954 s Sheets-Sheet 1 a $3 mm $7 L 1| W T J bu RN fi 3 5 mg. 7 IBM RR mm June 1938' M, PAPST DOOR LOCK Filed S p 1934 8 Sheets-Sheet 2 V k 5% 5 m a m m $8 m *mw /nvenf0r:

M. PAPST DOOR LOCK June 14, 1938.

Filed Sept. 8, 1934 8 Sheets-Sheet 3 June 14, 1938.

M. 'PAPsT DOQR LOCK 8 Sheets-Sheet 4 Filed Sept. 8, 1934 Inventor:

M. PAPST DOOR LOCK June 14, 1938.

- Filed Sept. 8, 1934 8 Sheets-Sheet 5 Inventor:

M. PAPST June 14, 1938.

1500B LOCK Filed Sept. 8, 1934 8 SheetS Sheet 6 I IHHHH IH W M. PAPST 2,120,647

nopa LOCK Filed Sept. 8, 1934 a Sheets-Sheet 7 ma ma v Ema. A ass 1 a Q8 5 aw mum i 3 k June 14, 1938.

M. PAsT June 14, 1938.

DOOR LOCK Filed Spt. s, 1934 8 Sheets-Sheet 8 m mSm m mm NR @w ma lnventop:

Patented June 14, 1938 UNITED STATES PATENT OFFiCE DOOR LOCK Max Papst, Paris, France 23 Claims.

The present invention relates to looks and more particularly to looks provided with a latch bolt to be actuated by a door handle.

In conventional locks of this class, the door handle projects from the door so that it can be seized by the users hand. A projecting handle, however, is disadvantageous wherever only a restricted space is available (narrow corridors, furniture in small rooms) or where, as for instance in vehicles (automobiles, aeroplanes) projecting parts would be objectionable.

Ihe present invention obviates this inconvenience and allows the door handle, when not used, to be brought close to the door or countersunk into the same or into a socket disposed on the door. There are door handles known in the art which can be countersunk into a socket. The inward and outward movements of such handles, however, are possible only after the door handle has been'unblocked from its end position by means of a key.

Such a door handle can and must be countersunk only after the room or vehicle to be closed thereby has been left. It would be an inadmissible risk e. g. to drive with such a door handle countersunk, since in the case of an accident the driver could not receive any assistance from the outside.

The present invention avoids these inconveniences. The door handle as per this invention can be pushed close to the door wall or countersunk into the same or into a socket without the help of a key when not in use, and can be re 7 moved from this position (neutral position) into the accessible position (operative position) again without the use of a key. In these end positions the door handle is blocked by members which can be disengaged without a key, and in the case of emergency the handle can be actuated by third persons. Owing to this fact, one may drive a car with such a door handle in its retracted position.

It is another feature of the invention that means may be provided for bringing the door handle into its operative and into its inoperative positions from the inside of the door (e. g. the

(Cl. YO-+203) key or from the inside by means of a special locking member.

Further details and objects of the invention will be apparent from the description hereinafter and the accompanying drawings illustrating several embodiments of the invention by way of example. In the drawings,

Fig. 1 is a longitudinal section through a door lock with a slidable handle in its operative position;

Fig. 2 is a longitudinal section through the door lock according to Fig. l with the handle in its inoperative position; v

Fig. 3 is a top plan view of a door lock according to Fig. 1;

Fig. 4 is a cross section along line X-X of Fig. 1;

Fig. 5 is a cross section along line XI-XI of Fig. 1;

Fig. 6 is a longitudinal section through the moving member of Fig. 1;

Fig. ,7 is a longitudinal section through another door lock with a slidable handle in its operative position;

Fig. 8 is a top plan View of the outside actuating member and the bush with the moving member partly developed, in the operative position of the handle;

Fig. 9 is a top plan view of the bush as seen in the direction of the arrow A of Fig. 8;

Fig. 10 is a longitudinal section through the door lock according to Fig. 7 in its inoperative position;

Fig. 11 shows another door lock with a slidable handle in its operative position;

Fig. 12 is a top plan view of the outside actuating member and bush with the moving member partly developed, in the operative position of the handle;

Fig. 13 shows a door lock according to Fig. 11 in its inoperative position;

Fig. 14 is a top plan view of the actuating mem her with the moving member partly developed, in the inoperative position of the handle;

Fig. 15 is a longitudinal section through another door lock with a slidable handle, in its inoperative position;

Fig. 16 is a semi-diagrammatical view of the door lock according to Fig. 15, in the operative position of the handle, the guiding surfaces in the handle shank and guiding cylinder being shown in development.

Fig. 1'7 is a top plan view as of the lock of Fig. 16 but shows the handle in its inoperative position and the bush partly broken away;

Fig. 18 is a longitudinal section through another door lock with a slidable handle in its operative position;

Fig. 19 is a top plan view of the door lock according to Fig. 18, partly broken away;

Fig. 20 is a cross section along line III-III of Fig. 19;

Fig. 21 is a partial View as seen in the direction of the arrow E of Fig. 18;

Fig. 22 is a longitudinal section through another door lock with a slidable handle in its operative position;

Fig. 23 is a top plan view of the door lock shown in Fig. 22, partly broken away;

Fig. 24 is a top plan view of the door lock shown in Fig. 22 with the handle in its inoperative position, partly broken away;

Fig. 25 is a section along line VIII-VIII of Fig. 29.

Figs. 1 to 6 show an embodiment in which a blocking member for holding the handle in its end positions may be released from the outside by pressure'alternatingly exerted on an' actuating member and on the door handle. The spring under the action of which the blocking member arrests the door handle in its end positions is tensioned by the preceding releasing movement.

In the Figs. 1 to 6, member I20 is an escutcheon fastened to the door I00. A bush I2I is secured to escutcheon I20 inserted in the door, and provided with slots I22 (see Fig. 3) and with recesses I23, I24 having edges I25, I26. Into the bush, also a longitudinal groove I21 is machined the continuation of which is the cross groove I20. At its end remote from the escutcheon, the bush is covered by an oscillatable bottom piece I29 (Fig. 1) which is connected by screws I30 with a wing guide I3I slidable in the slots I22 of the bush. A compression spring I32 bears against wing guide I3I. To the bottom piece I29, a square driver sleeve I33 is secured which engages the roll back I34 of the lock. A handle I35 is rigidly connected with a sleeve I36 which is covered by a second sleeve I31. Parts I36 and I31 are rigidly connected with each other and form together the handle shank. The inside sleeve I35 is provided with a round bore I33 to which a square hole I39 is connected. The sleeve I36 is further provided with slots I40 and I 65. A recess extending through the two sleeves I36 and I31 of the handle shank is designated by MI. The tapered end of the part I36, together with part I31, forms a hollow space I42 for lodging one end of a compression spring I32. A guide pin I43 is provided in the handle shank. A locking cylinder I44 (see Fig. 6) is lodged in the round bore of the handle shank. It is secured therein against axial displacement, but rotatable in relation thereto. The locking cylinder has a helical slot I45 the continuation of which is the cross slot I46. A spring I49 (Fig. 6) fastened to the locking cylinder and carrying a blocking member I48 extends through a recess I41.

A push button protrudes from handle I35. The button is slidably arranged in the handle shank, and comprises a cylinder lock I50 and an extension I5I secured to the same. The tumblers of the cylinder lock are designated by I52. The extension I5I carries a guide lug I53. A look rod I55 having a head I54 at one of its ends and a lug I56 at its other end is housed in the handle shank. Head I54 is lodged in a hollow space between cylinder lock I50 and extension I5I. A driver bar I51 is provided with a groove I58 in which look rod I55 may slide. This groove is bordered by the surfaces I59 and I60. The driver bar is guided by the square hole I39 of the handle shank and by a driver sleeve I33, through which it extends. Driver bar I51 has a knob I6I at its end, and is adapted to take along driver sleeve I33 when turned. A tension spring I 62 and a compression spring I63 are so arranged as to exert their action between the knob I6I and the driver sleeve I33.

The door lock operates as follows: When projected in its operative position as in Fig. 1, the handle may be turned as usual, and in this case the guide pin I43 of the handle shank I36, I31 guides the same in the cross groove I28 of the bush I 2| (Fig. 4). In order to retract the door handle from the operative position according to Fig. 1 into the inoperative position according to Fig. 2, the push button part (cylinder lock) I50 projecting in this position must be pressed in. The latter is then guided in a straight line by the tumblers I52 sliding within the slots I40 of the handle shaft part I36, and it can be turned only in case the tumblers are retracted by the insertion of a key. The lug I53 of the push button part I5I slides axially in the helical slot I45 of the locking cylinder I44 and, thus, causes the same to turn. When the locking cylinder is being turned the blocking member I 40 which extends, in the operative position of the handle through the recess I4I of the handle shank I 36, I31 into the recess I23 of the bush IZI, will be forced by the edge I25 (Figs. 3 and 4) of the recess I23 into the interior of the locking cylinder I44 and thus will be withdrawn from its blocking position. When a further pressure is exerted on the push button, the handle I35 with its shank I36, I31 will be moved along while blocking member I48 slides on the inner surface of bush I2I until it is caused by the spring I49 to pass through the recess and to bear against the wall of the latter (Fig. 2). Simultaneously handle I35 has been sunk into the escutcheon I20 but there remains a clearance I64 between the inside face of the handle and the bottom of the escutcheon. The same clearance also exists between the end of the handle shank and the lug I56.

The same sequence of movements takes place when the driver bar I51 is retracted by means of the knob I6I. At first the driver bar is caused to bear with the surface I60 of the groove I50 against the lug I56 of the lock rod I55 so as to entrain the same and then, through head I54, it causes the push button I50, I5I to slide inwards which movement imparts a rotatory movement to the locking cylinder I44. As described, this will bring the blocking member I48 out of engagement with recess I23, and the handle may be moved on until it will be arrested in the posi-. tion shown by Fig. 2. The knob I6I when released jumps back under the action of the tension spring I62 until it gets into the position defined by the pressure spring I63. In this way the knob is prevented from projecting excessively into the interior of the car.

The handle and the handle shank thereto connected may be moved into the operative position from the outside by a pressure exerted on the handle I35, the clearance I64 being utilized to this end. The push button I50, I 5| is held in relation to the bush I2I through the lock rod I55 which bears with its lug I56 against the wing guide I3! of the bottom piece I33. There is thus produced a relative movement of the push button I50, [5! with respect to the handle shank I36, I31 in a direction opposite to that of the preceding movement. A turning movement in a direction opposite to the preceding one is imparted to locking cylinder I44 by lug I53 sliding in the helical groove I45. This movement retracts blocking member I48 (Fig. 3) from the edge I26 of the recess I24 of the bush I.2I again into the interior of the locking cylinder and out of its blocking position. Under the influence of the compression spring I32 the handle shank is projected until the blocking member again engages with the recess I23 of the bush. The same effect may be obtained from the inside by the knob It! being (pushed in. The surface I159 of the driver bar presses on the lug I56 of the lock rod I55 and thus on the push button part I50 thereto connected through the :head I54. In this manner the sliding movement required for turning the locking cylinder is directly imparted to the push button.

The operative member for arresting the door handle, viz. the push button I 50, I5I can be locked in the inoperative position of the handle as fol1ows:--After the insertion of the key in the cylinder lock the latter is turned, and the lug I53 slides into the cross groove I46 of the locking cylinder I44 so as to .prevent any axial movement of the push button. The handle can no more .be moved outwards and is protected against any operation. When the key is withdrawn, the tumblers I52 (Fig. 2) engage with the slot I55 of the handle shank so that the push button part I5!) is secured again against any .turning.

Figs. 7 to 10 show an embodiment which is operable from the outside in the same way as the embodiment shown by Figs. 1 to 6, in which however the springs acting on the blocking member are tensioned by the displacement of the door handle.

In the Figs. 7 to 10 the numeral I signifies an escutcheon fastened to the door I05. A bush 2 is connected to the escutcheon and inserted in the door. It is provided with recesses 3 and 4 which are connected by a longitudinal recess 5 so as to form a Z-shaped slot (see Fig. 8) in which springs 3i and 32 are placed. The bush is further provided with a longitudinal slot 6 the continuation of which is a cross slot I (see Fig. 9). At the end remote from the escutcheon, the bush is covered by an oscillatable bottom piece 8 which is guided through pins 9 in slots H] of the bush. A compression spring II .bears against the bottom piece. A square driver sleeve I2 connected for rotation with roll-back I3 of the lock is rigidly secured to the bottom piece, and a hollow driver bar I5 is rigidly connected to the driver sleeve. The bottom piece, driver sleeve and driver bar may also be made integral with one another. The door handle I5 is rigidly connected with the handle shank I I- The handle shank is provided with a round bore I8, a square hole I!) and slots 20. Guiding pins 2|, 22 and 23 are fastened to the handle shank which is provided with a recess 24. A hollow space serves fortaking up a compression spring II. In the round bore It of the handle shank, a locking cylinder 25 is mounted for rotation, but secured against longitudinal displacement by the guiding pin 22. Looking cylinder 26 is provided with a helical slot 2'! with guiding surfaces 65 and 55, the continuation of which slot is a cross slot 28. The locking cylinder further carries a projection 29 which in turn carries a blocking member represented by a pin 30. Within the handle shank slides a push buttonconsisting of a cylin-- der lock 33 provided with tumblers 64, .a groove '6'! and a collar 68. The cylinder lock has an extension 34 which carries a guiding pin '35 on .a projection 35.

A draw bar 31 is so mounted with one of its ends in.the extension of the cylinder lock that it may be turned a certain degree in relation thereto. The draw bar carries a wing M at its other end. On the inside of the door there is a swingable handle 48 for pulling the door shut. This handle has a tubular projection into which the draw bar 31 extends with its wing 4| through the opening 38. The wing M can move in the T-shaped slot 39 of the tubular projection. A tension spring 43 pulls the inside handle towards the door so that it is caused to bear against the compression spring 42.

The new door lock operates as follows:-The door handle being in its projected position shown in Figs. '7 and 8, can be actuated in the usual manner when the guiding pin 23 of the handle shank I? guides the latter in the cross slot 1 of the bush 2 (Fig. 10). In order to move the door handle inwards it is necessary to press the push button (cylinder lock) 33 which projects "in this position. The same is then guided axially in a straight line by the tumblers 64 sliding in the slot 20 of the handle shank as well as by the pin 2! sliding in the slot 51. The guiding member (pin) 36 carried by the projection 35 of the. extension 34 slides axially along the surface 55 of the helical slot 21 (Fig. 8) and imparts to the locking cylinder a rotatory movement by which the blocking member 30 is urged out of the recess 3 of the bush and thus out of its blocking position, against the resistance of the spring 3i. When the pressure on the push button is continued, the collar 68 is caused to bear against the handle shank 20 so as to push the same, together with the handle, into the interior of the escutcheon and the bush respectively, while the pin 23 slides in the longitudinal slot 5 (Fig. 9) until the blocking member has arrived in front of the recess 4 of the bush. In this instant the blocking nieinber is urged into the recess 4 under the influence of the spring 32 and thus into its second blocking position. At the same time the locking cylinder 26 connected with the blocking member will be turned, so that the guiding member 35 of the extension of push button 34, 35 is caused to bear against the surface 66 of the helical slot 21 of the locking cylinder. The handle is then in its retracted position (Fig. 10).

The same sequence of movements takes place when the inside handle MI is pulled in order to shut the door. Thereby, the wing 4| is caused to bear against the bottom of the projection in the handle 40 so that the draw bar 31 transmits the pulling movement to the cylinder lock 33. When collar 68 of the cylinder lock 33 bears against the handle shank, the door handle will be retracted with the same pulling movement until the blocking member is brought again into its blocking position (Fig. 10) as described. When handle 40 is released, it jumps back into its initial position due to the action of spring 43. In order to move the handle and shank from the outside into the projected or operative position, the handle proper is first to be pushed inward, clearance 69 being utilized to this end (see Fig. 10), while push button 33 is retained by the solid driver bar I5 and extension 34. Thus, a relative movement of the push button 33 with respect to the handle shank I'i takes place in a direction opposite to the preceding one. A turning movement, also opposite to the preceding one, is imparted to locking cylder 26 by the guiding member 36 sliding along the surface 66 of the helical slot 21. In this way the blocking member 3!] is urged, against the action of the spring 32, out of the recess 4 of the bush until it has arrived in front of the longitudinal slot 5. Thereupon, the handle shank Will be projected by compression spring ll. At the end of the longitudinal slot 5 the blocking member will be urged by spring 3| into the recess 3 of the bush so as to get again into its blocking position. 7

The same effect is obtained from the inside by a pressure exerted on the handle 40. This pressure exerted against the action of the spring 42 is transmitted to the draw bar 31. Thus, the cylinder lock is pushed outwards .and the blocking member is turned out of its blocking position. The door handle is arrested in its retracted position by means of guiding member 35 which is urged into the cross slot 28 of the locking cylinder by the rotation of the cylinder lock.

From the inside the door handle may be locked in its inoperative position by the wing 4| being urged into the cross branch of the slot 39. As the draw bar is rotatably mounted in the cylinder lock, for instance by means of a screw thread connection, the draw bar may be turned the required angle in relation to the cylinder lock which is held against rotation by the tumblers 64. On account of the slanting position of the said cross branch the spring 42 will be compressed so that the cylinder lock is held through the draw bar 3'! without any clearance.

Figs. 11 to 14 show a similar embodiment, in which however unblocking from the operative position tensions a spring acting on the actuating member. The said spring unblocks the handle from its neutral position by pushing the actuating member back towards the inside.

In Figs. 11 to 14 numeral 44 signifies a compression spring, 45 a notch in the bush, 46 a recess in the bush, 4'! a clearance, 48 an escutcheon and 49 a supporting ring. All other parts are designated by the same numerals as the corresponding parts in Figs. '7 to 10.

The arrangement illustrated by Figs. 11 to 14 works as follows:The door handle may be. retracted from its operative position, from the outside or the inside, in exactly the same manner as in the arrangement shown by Figs. 7 to 10. When this is done, compression spring 44 supported by the handle shank l1 through the supporting ring 49 is compressed and the blocking member 3%] urged into the notch 45 of the recess 46 of the bush 2 (see Fig. 14). In this retracted position (Fig. 13) the collar 58 of the push button 33 is flush with the surface of the door handle 16. The push button guided in an axial direction is held against the action of the spring 44 by the guiding member 36 bearing against the surface 66 of the helical groove 2] of the locking cylinder 26, and since the locking cylinder is not allowed to turn in this position, blocking member 30 is kept in the notch 45. The handle may be projected from the position shown in Fig. 13 by a pressure exerted on the handle so as to push it inward as far as the depth 41 of notch 45. For this purpose, a small clearance 4'. is provided between door handle I6 and escutcheon 48 (Fig. 13). This movement releases the blocking member from the notch so that the locking cylinder 26 may turn again. Now, spring 44 presses the push button 33 outwards together with the guiding member 36, and the latter slides along the surface 66 of the helical groove 21 (Fig. 14) so as to impart to the locking cylinder a rotatory movement by which the blocking member connected with the said cylinder is urged out of its blocking position. In the same way as described with respect to the arrangement of Figs. '7 to the handle 16 is pushed outwards together with the handle shank I! under the action of compression spring II, and is brought into the arrested position through the agency of blocking member 30 and spring 3|. With this arrangement, however, the handle cannot be operated from the inside to project it into its operative position.

Figs. to 17 show an embodiment in which unblocking is accomplished from the outside in either end position by pressure being exerted on the actuating member.

In Figs. 15 to 17 numeral 50 designates the door handle, 51 the handle shank, 52 the push button, 53 an intermediate piece, with respect to which the push button 52 is oscillatable and which carries a guiding member (pin) 54 extending through the guiding cylinder described hereinafter into the bush. The intermediate piece is under the influence of the spring 8|. 55 represents a guiding cylinder provided on its one end with an indenture formed by helical guiding surfaces 55, 51, and, at the opposite end, with a coupling lug 10. The handle shank is provided with a recess formed by axial guiding surfaces '62, B3 and by helical guiding surfaces 58, 59, 84 and 85. Moreoverthere is provided a locking cylinder ll which at its one end has a coupling recess formed by the surfaces l2, l3 and at its other end carries the blocking member 14. The bush has two recesses 15, 16 and a longitudinal slot 1! connecting said recesses, and being provided with springs l9 and BB. Numeral 38 designates a draw bar. A lock 85 with a tongue Bl is lodged in the door handle. A compression spring for the handle shank is' marked by 89.

The arrangement shown in Figs. 15 to 17 works as followsz-In order to retract the door handle 58 and the handle shank 5i pressure is to be exerted on push button 52 to shift it into the interior of the handle shank together with the intermediate piece 53 connected with it for movement in axial direction but oscillatable with re spect thereto. When button 52 is pushed inward guiding member 54 engages the helical guiding surface 5? (Fig. 16) of the guiding cylinder 55 and will be displaced in the direction of the arrow B while the intermediate piece 53 is turned. During its further movement the guiding member is at the same time caused to bear against the helical surface 59 of the handle shank 5i and also against the guiding surface iii of the guiding cylinder 5i. When the movement of the guiding member 54 continues, the guiding cylinder will be turned until the guiding surface 8! registers with the guiding surface 63 of the handle shank. In turning theguiding cylinder takes along the locking cylinder H by means of the projection 10 which bears against the surface 72 of the locking cylinder. This urges the blocking member "14 rigidly connected with the locking cylinder, out of the recess i5'of the bush l8 and thus out of its locking position. When the push button 52 is further depressed the handle 52 and the handle shank 5! are pushed into the bush, until the blocking member 14, sliding in the longitudinal slot 1?, has arrived in front of the recess 36. From this position the blocking member will be urged by the spring 19 into the recess l5 and thus into its blocking position. At the same time the locking cylinder is turned in the :direction of the arrow B until its surface 13 is caused to bear against the lug T0 of the guiding cylinder. Consequently the additional angu- =lar displacement of the'locking cylinder as effected under the influence of the spring 19 does not impart an additional rotatory movement to the guiding cylinder. The push button being now released returns, the same as the guiding mem- :ber 54, under the pressure of spring 81 into its initial position shown in Fig. 1'7 while the guiding member slides in guiding slots which are at first formed by the guiding surfaces 63 and El on the one hand and 82 on the other hand, and then by the helical guiding surfaces 84 on the one hand and 51 on the other hand. In order to project the door handle and the handle shank from the inoperative position pressure is to be exerted again on the push button 52 which is thus displaced into the interior of the handle shank together with the intermediate piece 53. In consequence thereof, guiding member 54 will engage the helical guiding surface 56 of the guiding cylinder 55 (Fig. 17) and will be urged in the direction of the arrow C while the intermediate piece 53 will be angularly displaced. When its movement continues, the guiding member is at the same time caused to bear against the he1ical surface 58 of the handle shank 5i and against the guiding surface '50 of the guiding cylinder 51. When guiding member 54 further continues its movement, the guiding cylinder turns until the guiding surface 60 of the guiding cylinder registers with the guiding surface '02 of the handle shank. During this rotatory movement the guiding cylinder takes along the locking cylinder by means of the projection 10 hearing against the surface 13 of the said locking cylinder. This brings the blocking member It rigidly connected with the locking cylinder, out of the recess 15 of the bush '!0 and thus out of its blocking position.

Thereupon, compression spring 89 will project the door handle and the handle shank until the blocking member 74 has arrived in front of the recess 15, and spring has urged the blocking member into its blocking position (Fig. 16).

On account of the clearance provided for, this movement of the locking cylinder is not transmitted to the guiding cylinder. The push button now being released returns into its initial posi-- tion under the influence of the spring 8| while the guiding member slides in guiding slots which are at first formed by the guiding surfaces 62 and '50 on the one hand and 03 on the other hand and then by the helical slots on the one hand and. 56 on the other hand.

Instead of being operated by a pressure from the outside, the push button may also be actuated by pulling the draw bar 88. The door handle may be locked in its retracted position by means of the lock 86 the tongue 81 of which prevents the movement of the handle when engaging with the push button.

The Figs. 18 to 21 and 22 to 25 show special embodiments requiring little space.

In Figs. 18-21 numeral 30! designates a door handle, 302 an escutcheon, 303 a handle shank, 304 a spindle, 305 a fastening screw, and 306 supporting screws. A coupling sleeve 30'! has recesses 303 and 309 which connected by the slot 3|0 form a Z-shaped slot. A notch in the recess 300 is designated by 3 H and the depth of the notch by 333. The coupling sleeve 30? has also a longitudinal slot M2 and a square end portion 3| 3. A cylinder lock designed as a push button is designated by CH5 and provided with a collar 335 and tumblers 316. The cylinder lock is housed in a sleeve 31! provided with slots 33! for the tumblers of the lock and with an angular slot formed by the branches 3H8 and 338 (Fig. 21). A guiding screw 3l9 is secured to the cylinder lock and an extension 320 is screwed into the cylinder look by means of its portion 32l. The extension has a recess 323 andis further connected with a draw bar 322. A. coupling piece 324 is secured to the handle shank in a recess 314 of the shank by means ofscrew 305. Other recesses 325 and 3-20 (see Fig. 20) are also provided in the shank. A blocking member 32'! having a round head 328 and a hole 320 is so arranged as to engage said recesses 325 and 326. A lever spring 330 with arms 35! and 332 approximately at right angles to each other is mounted on spindle 304. Two compression springs 333 and 334 are lodged within sleeve 301.

This structure operates as follows:-

In Fig. 18 the door handle 30! is shown in its projected or operative position. When the door handle is actuated movement is transmitted through the handle shank fastened internally to the door handle to the coupling sleeve 30'! by means of the coupling piece 324 extending into the longitudinal slot 312 of the coupling sleeve. The square end portion 313 of the coupling sleeve 30'! is inserted into roll-back 134 of the lock proper and thus actuates the latch bolt (not shown). The door handle can be moved inwards by a pressure exerted on the push button 3l'5. This causes guiding screw 319 to slide within the axial portion 310 of the angular slot of the cylinder lock sleeve 3!? and thus to guide the push button axially. The cylinder lock sleeve may be rigidly fastened in any suitable Way to the handle shank. The extension 320 connected with the cylinder lock 315 by the bolt 32! partakes of this axial movement. Thereby, spring lever arm 33! resting in the recess 323 of the extension, is rocked about the spindle 304 which is stationary within the handle shank 303 and tensions arm 332 of the lever spring 330. Arm 332 is con-- nected to the blocking member 321 by its end engaging with the hole 329 (Fig. 20) of the blocking member 321. Under the resilient action of the arm 332, the blocking member swings about its round head 32%? lodged Within the recess 326 of the handle shank so that the other end of the blocking member is urged out of the recess 308 (Fig. '19) of the coupling sleeve and thus out of its blocking position. When the pressure on the push button continues, the latter is caused to bear with its collar 335 against the handle shank so as to take along the same together with the door handle, while the end of the blocking member slides in the slot 3l0 of the coupling sleeve 30! until it has arrived in front of the recess 309 of the same. In this instant the end of the blocking member is urged into recess 309 of the coupling sleeve, under the continued spring action of arm 332 of the lever spring 330. When the push button is released thereafter, the end of the blocking member will be urged into the notch 3 of the coupling sleeve, by the pressure of the spring 333 acting through the supporting screws 306 on the handle shank 303, a small clearance of the blocking member in the recesses 325 and 326 of the handle shank permitting such movement. In this position of the blocking member as shown in Fig. 19 by dot and dash lines, the door handle 3M together with the handle shank 303 is blocked with the coupling sleeve 30?. As long as the push button is depressed the finger pressure overcomes the force of spring 334 acting on the push button through the extension 32!]. When the push button is released, spring 334 tends to push lever arm 33! outward so that the resilient lever arm 332 is tensioned in the direction of the arrow A (Fig. 19). Notch 3! prevents the blocking member from leaving recess 309 under the action of said spring tension. Now, in order to project the handle, pressure is to be exerted against the door handle 3!]! proper until the handle shaft and the blocking member axially coupled with the same have been displaced inwards through a distance corresponding to the depth 335 of the notch. Thereafter, the blocking member subject, as above shown, to the action of the lever spring will swing about the round head 323 in the direction A (see Fig. 20) and its end will be removed from recess 309 of the coupling sleeve 38! (Fig. 19) and thus from the position in which it blocks the retracted handle. Thereupon, handle shank 333 with the door handle 3! will be projected, under the action of the compression spring 333 until the end of the blocking member sliding in the slot 3" has been brought in front of recess 308, and entered the latter under the continued pressure of the resilient arm 332, thereby blocking the handle in its projected position (Fig. 18). Instead of pressing the push button, draw bar 322 connected to extension 323 may be pulled from the inside of the car. The handle may be locked in its inoperative position by the insertion of the key in the cylinder look, so that the tumblers 346 are urged out of the slots 33? of the cylinder lock sleeve 3!'!. A subsequent angular displacement of the cylinder lock urges the guiding screw 3l3 (Fig. 21) into portion 338 of the angular slot provided for in the cylinder lock sleeve, where screw 3! Sprevents any further axial movement of the cylinder lock serving as a push button. When the cylinder lock is being turned, it turns about the thread of portion 32! of the extension, since portion 32! is not screwed in sufficiently far to prevent a certain rate of relative rotation.

In the Figs. 22 to 25, numeral 339 designates an extension for the push button, 340 a spindle, and 34! a recess in the cylinder lock sleeve 352. In the handle shank is lodged a sleeve 342. Numeral 343 designates a recess in the coupling sleeve, of shouldered shape and provided with a notch 345. A blocking member is designated by 346 and provided at its end with a shoulder 344. A further recess in the coupling sleeve is designated by 341.

The Figs. 22 to 25 further show a bearing bush 353 made integral with the escutcheon 302. This bush is provided with a slot 354 into which extends a pin 355 fastened to the coupling sleeve. All other parts are designated by the same numerals as in Figs. 18 to21.

The operation of the arrangement shown in Figs. 22 to 25 diifers from that shown in Figs. 18 to 21 only inasmuch as the spindle of the lever spring 33 mounted within the extension 339 will be relatively displaced with respect to the handle shank and the cylinder lock sleeve 352 respectively when pressure is exerted on push button 3! 5. Thereby, arm 33! of the lever spring 333 engaging recess 34! of the cylinder lock sleeve will be swung outwards relatively with respect to the spindle 34!] so that the spring 332 is tensioned. This spring engages the blocking member 346 which is slidably lodged in sleeve 342. The tension of spring 332 urges member 346 from its position in which it blocks the handle in the latters operative position as shown in Fig. 23, entirely into the interior of the handle shank. When the pressure on the push button continues, the collar 335 of the same is caused to bear against the handle shank and to move it into the interior of the coupling sleeve 360 until the blocking member 346 has arrived in front of the recess 343 of the coupling sleeve (Fig. 24). By a further pressure of the lever arm 3 32 the blocking member is urged into the recess 343. When the push button now is released, the handle shank is pushed back under the pressure of the spring 332 as far as the neck 344 of the blocking member permits when engaging with the notch 345 of the recess 343. Thus the handle shank is blocked in its retracted or inoperative position (Fig. 24). The door handle can be projected in the same manner as in the arrangement described with reference to Figs. 18 to 21, viz., by a pressure exerted on the door handle. As soon as the blocking member has left notch 345 under such pressure, spring arm 332 tensioned' by the action of the spring 334 will push the blocking member in the direction of the arrow C back into the interior of the handle shank 3!]3 whereupon spring 333 will project the handle until the blocking member 345 has arrived in front of the recess 34'! and has been urged by spring lever arm 332 into its recess and thus into its position for blocking the projected handle. The door handle may be locked in its retracted position in the same manner as in the arrangement shown in Figs. 18 to 21. When the handle is operated the coupling sleeve 30'! will turn in the bearing bush 353 during which movement it is secured by the pin 355 sliding in the slot 354, against an axial displacement.

The design of the door lock as described by way of example can be executed in various ways and also adapted to swingable and screwable handles without leaving the scope of the invention.

In many instances, the means for operating the blocking devices may be advantageously disposed on the walls of the door and outside the lock described.

What I claim as new, is:-

l. A lock comprising a handle with a handle shank, a roll-back for actuating a latch bolt, a sleeve housing the said handle shank and. secured against longitudinal displacement, in which sleeve the handle shank is axially displaceable into an operative position and from the latter towards the door wall into an inoperative position, means adapted to prevent the handle from being actuated when the handle is in its inoperative position, means adapted to insure the connection of the handle with the roll-back, means adapted to automatically bring the handle to its operative position, means adapted to automatically block the said handle in its operative and inoperative positions, means operable from the outside for releasing the blocking means, means for actuating said releasing means from the inside when the handle is in its operative position, a locking device adapted to lock the door handle from the outside in its inoperative position by means of a key, means for pulling the handle from the inside into its inoperative position, means adapted to cause the pulling-in device to collapse so as to require little space, means I adapted to automatically actuate the pulling-in device when the door is being shut from the inside, means adapted to prevent the movement of the door handle when being pushed inwards from being transmitted to the members mounted on the inside of the door. 2. A door lock comprising a handlewith a handle shank, a roll-back for actuating a latch bolt, a sleeve secured against longitudinal displacement and housing the said handle shank, means adapted to prevent the said handle from being actuated when the handle is in an inoperative position, resilient means adapted to automatically move the handle into an operative position, means adapted to automatically block the said handle in its operative and inoperative positions, releasing means by which the blocking means can be released from the outside, means by which said releasing means can be actuated from the inside, a locking device adapted to lock the handle in its inoperative position from the inside, a pullingin device adapted to pull the handle into its inoperative position from the inside, a driver bar insuring the connection of the handle with the roll-back and which is a part of the pulling-in device, means adapted to cause the pulling-in device to collapse so as to require littlespace, means adapted to automatically actuate the pulling-in device when the door is being shut from the inside, and means adapted to prevent the movement of the door handle when being pushed inwards from the outside, from being transmitted tothe members mounted on the inside of the door. 1

3. A door lock comprising a handle with a handle shank, a roll-back for actuating a latch bolt, a sleeve secured against longitudinal displacement and housing the said handle shank, means adapted to prevent the handle from being actuated when the handle is in an inoperative position, means adapted to ensure the connection of the handle with the said roll-back, resilient means adapted to automatically move the handle into an operative position, means adapted to automatically block the, handle in its operative and inoperative positions, means by which the blocking means can be released from the outside, a locking device adapted to lock the handle in its inoperative position from the outside by means of a key, a pulling-in device adapted to pull the handle into its inoperative position and to releasethe blocking means from the inside, means adapted to cause the pulling-in device to collapse so as to require little space, means adapted to automatically actuate the pulling-in device when the door is being shut from the inside, and means adapted to prevent the movement of the door handle when being pushed inwards from the outside, from being transmitted to the members mounted on the inside of the door.

' 4. A door lock comprising an outside handle with a handle shank, a roll-back for actuating a latch bolt, a sleeve secured against longitudinal displacement and housing the said handle shank, means adapted to prevent the handle from being actuated when the handle is in an inoperative position, means adapted to insure the connection of the handle with the said roll-back, resilient means adapted to automatically move the handle into an operative position, means adapted to automatically block the handle in its operative and inoperative positions, releasing means by which the blocking means can be released from the outside, a locking device adapted to lock the handle in its inoperative position from the inside, a pulling-in device adapted to pull the handle into its inoperative position from the inside, means adapted to cause the pulling-in device to collapse so as to require little space, said pullingin' device being operatively connected to said releasing means, and comprising a movable handle member on the inside of the door adapted'to shut the door whereby when the door is being shut from the inside through the agency of said movable handle member, said releasing means may be operated and said outside handle retracted, and means adapted to prevent the movement of the outside door handle when being pushed inwards from the outside, from being transmitted to the handle member on the inside of the door.

5'. A door lock comprising a handle with a handle shank having an operative and an inoperative position, a roll-back for actuating a latch bolt, a sleeve secured against longitudinal displacement and housing the handle shank, means adapted to prevent the handle from being actuated when the handle is in its inoperative position, means adapted to insure the connection of the handle with the said roll-back, resilient means adapted to automatically move the handle into its operative position, means adapted to automatically block the handle in its operative and inoperative positions, an actuating device adapted to control the last said means by its axial displacement within the handle shank, means by which this axial displacement is converted into a displacement transverse thereto of the means which block the handle shank in its operative and inoperative positions.

6. A door lock comprising a handle with a handle shank having an operative and an ,inoperative position, a roll-back for actuating a latch bolt, sleeve secured against longitudinal displacement and housing the said handle shank, meansadapted to prevent the handle from being actuated when the handle is in its inoperative position, means adapted to insure the connection of the handle with the said roll-back, resilient means adapted to automatically move the handle into its operative position, means adapted to automatically block the handle in its operative and inoperative positions, an actuating device adapted to control the last said means by its axial displacement within the handle shank, resilient means by which this axial displacement is converted into a displacement transverse thereto of the means which block the handle shank in its operative and inoperative positions.

"7. A door lock comprising a handle with a handle shank, a roll-back for actuating a latch bolt, a sleeve secured against longitudinal displacement and housing the said handle shank, means adapted to prevent the handle from being actuated when the handle is in an inoperative position, means adapted to insure the connection of the handle with the said roll-back, resilient means adapted to automatically move the handle into an operative position, means adapted to block the handle in its operative and inoperative positions, an actuating device adapted to control the last said means, a locking device mounted in the handle and adapted to lock the said actuating device in an inoperative position.

8. A door lock comprising a handle member having an operative and an inoperative position, a rclbback for actuating a latch bolt, means connecting said handle member with said rollback for actuating the latter by means of the former, means for preventing said handle member from being actuated when the handle is in its inoperative position, resilient means adapted; to

automatically move said handle into its operativc position, blocking means movable with said handle memberand relatively thereto and having two positions for automatically blocking the handle member in its inoperative and in its operative positions respectively, an actuating member carried by said handle member and being movable relatively thereto, and an oscillatable member within said handle member and connected to said blocking member, said oscillatable member being in engagement with said handle member and with said actuating member so as to swing in one direction and to retract said blocking member from one blocking position upon an inward movement of said actuating member relative to said handle member, and to swing in the other direction and to retract said blocking member from its other. blocking position upon an inward movement of said handle member relative to said actuating member.

9. A door lock comprising a handle having an operative and an inoperative position, a rollback for actuating a latch bolt, means connecting said handle with said roll-back for actuating the latter by means of the former, means for preventing said handle from being actuated when the handle is in its inoperative position, resilient means adapted to automatically move said handle into its operative position, blocking means movable with said handle and relatively thereto and having two positions for automatically blocking the handle in its inoperative and in its operative positions respectively, a push button carried by said handle and being movable relatively thereto, and an oscillatable member with in said handle and connected to said blocking member, said oscillatable member being in engagement with said handle and with said push button so as to swing in one direction and to retract said blocking member from one blocking position upon an inward movement of the push button relative to the handle, and to swing in the opposite direction and to retract said blocking member from its other blocking position upon an inward movement of said handle relatively to said push button.

10. A door lock comprising a handle member having an operative and an inoperative position, i

roll-back for actuating a latch bolt, means connecting said handle member with said roll-back for actuating the latter by means of the former, means for preventing said handle member from being actuated when the handle is in its inoperative position, resilient means adapted to automatically move said handle into its operative position, blocking means movable with said handle member and relative thereto for automatically blocking it in its inoperative position, an actuating member carried by said handle member, one of said members being movable relatively to the other one in the direction in which said handle member moves when being shifted from one of its said positions to the other one, means in engagement with said actuating member and said blocking means for retracting said blocking means from its blocking position upon a relative movement of said members and an elongated member connected to said actuating member for operating said actuating member, said elongated member being arranged interiorly of said handle member and said roll-back and protruding from the side of the lock remote from said handle member.

11. A door lock comprising a handle member having an operative and an inoperative position, a roll-back for actuating a latch bolt, means connecting said handle member with said rollback for actuating the latter by means of the former, means for preventing said handle member from being actuated when the handle is in its inoperative position, resilient means adapted to automatically move said handle into its operative position, blocking means movable with said handle member and relatively thereto and having two positions for automatically blocking it in its operative and in its inoperative positions, an actuating member carried by said handle member, and'being movable relatively thereto, and an oscillatable member within said handle member and connected to said blocking member, said oscillatable member being in engagement with said handle member and with said actuating member so as to swing in one direction and to retract said blocking member from one blocking position upon an inward movement of said actuating member relative to said handle member, and to swing in the other direction and to retract said blocking member from its other blocking position upon an inward movement of said handle member relative to said actuating member and key operated means for preventing said handle member from being projected from its inoperative position upon actuation of said actuating member.

12. A door lock comprising a handle member having an operative and an inoperative position, a roll-back for actuating a latch bolt, means connecting said handle member with said roll-back for actuating the latter by means of the former,

means for preventing said handle member from being actuated when the handle is in its inoperative position, resilient means adapted to automatically move said handle into its operative position, blocking means movable with said handle member for automatically blocking it in its operative and in its inoperative positions, a keyoperated cylinder lock in said handle member, said cylinder lock forming a push button and being movable in the direction of its axis relatively to said handle member, an oscillatable member within said handle member and connected to said blocking means, said oscillatable member being in engagement with said handle member and with said cylinder look so as to swing in one direction and to retract said blocking member from one blocking position upon an inward axial movement of said cylinder lock relative to said handle member, and to swing in the other direction and to retract said blocking member from its other blocking position upon an inward movement of said handle member relative to said cylinder lock, and means in engagement with said cylinder lock for preventing an alteration of its axial position in relation to said handle member when turned by means of its key.

13. A door lock comprising a handle with a shank having an operative and an inoperative position, a roll-back for actuating a latch. bolt, means connecting said handle with said rollback for actuating the latter by means of the former, means for preventing said handle from being actuated. when the handle is in its inoperative position, resilient means adapted to automatically move said handle into its operative position, blocking means movable with and relatively to said shank and having two positions for automatically blocking said handle in its onerative and its inoperative positions respectively, a key-operated cylinder lock including tumblers within said shank, said cylinder lock being movable in the direction of its axis relatively to said handle, said tumblers being adapted to engage said shank so as to guide said lock in axial direction, an oscillatable member within said shank and connected to said blocking member, said oscillatable member being in operative engagement with said shank and with said cylinder look so as to swing in one direction and to retract said blocking member from one blocking position upon an axial movement of said cylinder lock relative to said shank, and. to swing in the opposite direction and to retract said blocking member from its other blocking position upon an axial movement of said shank relative to said cylinder lock, and means in engagement with said cylinder lock and said shank for preventing relative axial movement thereof when the cylinder lock is turned by means of its key.

14. A door look as claimed in claim 13 comprising an elongated member connected to said cylinder lock and protruding from the side of the door lock opposite said handle for moving said cylinder lock in axial direction relatively to said handle.

15. A door look as claimed in claim 9 comprising a rod connected to said push button and protruding from the side of the door lock opposite said handle for pulling said push button, and means at the protruding end of said rod for arresting it to prevent a movement of said push button relative to said handle.

16. In a door lock of the character described, a handle with a shank being retractable from operative into inoperative position, a spring for projecting the handle shank, a push button in said shank, said push button having a projection and being accessible from the outside of said handle, means for guiding said push button axially within said shank, a blocking member for blocking said handle in its operative and its inoperative positions, said blocking member being oscillatable about and movable in the direction of the axis of said shank, and means for transforming an axial movement of said push button relative to said shank into a turning movement of said blocking member.

17. In a door lock of the character described, a handle with a shank being retractable from operative into inoperative position, a spring for projecting the handle shank, a push button in said shank, said push button having a projection and being accessible from the outside of said handle, means for guiding said push button axially within. said shank, a blocking member including a blocking projection for blocking said handle in its operative and its inoperative positions, said blocking member being oscillatable about and movable in the direction of the axis of the shank and having inclined surfaces, and a sleeve stationary in axial direction and encompassing said handle shank and having a slot into which said blocking projection engages, and said push button projection being adapted to engage the inclined surfaces.

18. A device as claimed in claim 17 in which the slot of the sleeve is Z-shaped, and springs therein tending to urge the blocking member into the respective arms of theslot in front of which it arrives.

19. A device as claimed in claim 17 in which a draw bar is connected with the push button so as to freely turn in relation thereto, said draw bar protruding from the door lock at the side remote from said handle, said push button and said handle having surfaces adapted to abut each other in axial direction, and means at the end of the draw bar for arresting it in order to hold said push button and said handle in retracted position.

20. A device as claimed in claim 9 in which said push button is formed as a cylinder lock having tumblers, said tumblers being adapted to engage a slot of said shank for axially guiding said cylinder lock therein, and in which a projection is provided at the side of the cylinder lock, said projection engaging an angular slot of said shank so as to prevent an axial movement of said cylinder lock relative to said shank when the projection is in the transverse arm of the angular slot, and to permit an axial movement when the projection is in the longitudinal arm of the slot.

21. In a door lock of the character described, a handle with a shank being retractable from operative into inoperative position, a spring for projecting the handle, a push button in said shank being guided therein in axial direction and being accessible from the outside of said handle, a blocking member for blocking said handle in its operative and its inoperative positions, said blocking member being movable in a plane at right angles to the axis of said shank, a bell crank lever spring pivoted in said shank, one arm of said lever spring being operatively connected to said push button, the other arm of said lever spring engaging said blocking member, whereby said lever spring is rocked to retract the blocking member from its blocking position of the operative handle upon an inward movement of said push button relatively to the shank, and tensioned to return the blocking member upon a relative movement of the push button in the opposite direction.

22. A device as claimed in claim 21 further comprising a sleeve connected for rotation with said handle shank, said shank being slidable therein, said blocking member engaging a Z- shaped slot of said sleeve, a shoulder of said sleeve defining a notch of one of the slot arms and being adapted to hold said blocking member therein in its blocking position of the inoperative handle, and a second spring tending to move said push button outwards in relation to said handle.

23. In a door lock of the character described, a handle with a shank being retractable from operative into inoperative position, a spring for projecting the handle, a push button in said shank being guided therein in axial direction and being accessible from the outside of said handle, a blocking member for blocking said handle in its operative and its inoperative positions, said blocking member being movable in a plane at right angles, to the axis of said shank, a pivot pin connected for movement with said push button, a bell crank lever spring mounted on said pivot pin, one arm of said lever spring being operatively connected to said shank, the other arm of said lever spring engaging said blocking member, whereby said lever spring is rocked to retract the blocking member from its position .in which it blocks the handle in the latters operative position upon an inward movement of said push button relatively to the shank, and tensioned to return the blocking member upon an inward movement of the shank relatively to the push button.

MAX PAPST.

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