US1586223A - Lock - Google Patents

Description

May 25 1926. 1,586,223

M. sHE'mMAN Loox Filed April 10, 1923 2 sheets-sheet 2 ,/Allllll "Il I /m/E/v ron N0/Wg 526mm@ We., .5 Me/lss v A TTURNE Y Patented May 25, 1926..

MORRIS SHINMAN, F NEW YORK, N. Y.

LOCK.

Application filed April 1G, 1923. Serial No. 631,127.

rlhis invention relates to vimprovements in locks and more particularly to doo-r locks,

one of the objects of rmy invention being to provide a jimmy-proof lock in which a l halt turn ot the bolt will effectively prevent separation of the lock and keeper whereby the door can be opened.

A further object is to provide a lock which can be used as a latch Vand which can 10 be turned to a jimmy-prooi position at the will of the operator. `The lock can be operated from within the house by a knob and from the exterior by the person only who has the proper key.

A iurther object is to provide a lock, the bolt of which, when in latchin'g position, is free to move into the lock casing against the action of a spring, but which when in jin'nny-proo'tl position is also locked against 20 longitudinal movement and cannot be forced into the lock casing.

Other objects and advantages of my improved construction will appear as the specification progresses.

In the `accompanying drawings, which illustrate an embodiment of my invention;

Fig. 1 is a face View of the lock, the cover plate being removed to show the parts, and the bolt being shown in ordinary engagement with the keeper;

Fig. 2 is a View of the underside of the cover plate;

Fig. 3 is a sectional elevation of the lock and its connection to the door, the section 35 being taken on the line 3-3 of Fig. 1;

Fig. 4 is asection taken on the line d-el of Fig. 1;

Fig. 5 is a section 'taken on the line 5-5 of Fig. 1;

Fig. 6 is a section taken on the line 6 6 of Fig. 2;

Fig. 7 is a face view of the keeper plate with the bolt. turned to jimmy-proof position; *45 Fig. 8 is a view similar to Fig. 1 and shows the lock parts as they appear vwhen the bolt is drawn back to unlatched position; and

Fig. 9 is a view similar to Fig. 1 showing the parts as they appear when the bolt is revolved to jimmy-prooi position.

Referring to the drawings in detail, 10 denotes the, lock casing in which is slidably mounted a bolt 11 which projects 55 through the side wall 12 of the casing to normally engage a keeper 13. The inner end of the bolt is flanged to vlimitits outward movement against the `action oi' a spring 14 which is wound around the square shank 15 which is formed on the bolt and e0 which slides across an upstanding .wall 16 of a cam slide 17, to be later referred to in detail. The inner end of the spring lilabuts against a collar 18 which is provided with a square bore through which the shank 15 can slide. The shank 15 passes between two posts 19 which keep the bolt in alignment and which are preferably cast Vintegral with the casing 10. The shank in 'that portion which lies between the posts is rounded on its diagonally opposite edges as at 20so that the bolt 11 can be revolved a half turn. Beyond the posts, the shank reduced to receive loosely an arm 21 whose outer end 22 is widened to provide asupport 23 whiclrslides on the bottom of the casing, the upper end of the support being` adjacent the under surface of the cover plate 211 so that any tendency ot the arm 2l to swing upwardly is prevented. The arm is retained on the end of the shank 15 by a washer 24 and screw 25. Vlit is thus seen that the bolt can be freely moved to the limit of its inward travel.` against the spring 14: when in the position shown inFig. 1 and shown as moved in Fig. 8. This provides the latching feature when the door is swung closed.

The casing?` 10 will, of course, be mounted on the inside face of a door, a portion ot which is indicated as at 25 (see Fig. 3) and the keeper 13 fixed on the face of the door frame 26 so that a portion thereof lies adjacent the end ot the casing 10. The lock for operating the bolt may be of any well known type, preferably of the piu cylinder ty 3e, operated with a paracentric key, and will be mounted within the door as shown in Fig. 3. The lpin cylinder 2T will revolve a hollow cylinder 28 carried-by the casing cover through themedium of a spindle 29 which projects into the cylinder 28 through a suitable slot 30 in the latter. rhe cylinder is flanged at its inner` edge as at 31 to overlie two washers, the lower oi, which 32, carries a cani operating arm 3ft and is cut out on its periphery as at 35 4to allow a relative movement between wasner 32 and upper washer 36, which is provided .n on its periphery with a downwardly and out i wardly extending projection 37 which lies within the cut out portion of washer 32.

as Y

rl`he bottoni or knob side of the casing 10 is provided with a like cylinder 38, the outer end ot which is shaped to provide a knob 39, the lower washer 40rin this instance also being provided with a cam operating arm 41 and a peripheral cut out portion 42, while the upper washer is provided with a bolt operating linger and a dowel 45 which extends downwardly into the cut out portion 42. rlhe cam arm 41 is providedv with an upst'anding pin 46 which engages in a suitable socket in the end of cam arm 34 above referred to, so that either a ,key or the knob will operate the lock in the same manner.

The cam slide 17 is shaped to provide a -cut out 47 through which the cam arm 41 may swing as indicated by the arrow in Fig. l without moving said cam slide when the holt is retracted, and is provi-ded with a cam face 4S against which the arm 41 contacts to move the slide 17 to revolve the bolt. The cam slide is slotted as at 49 to closely lit over the posts 19, so that the latter act as a guide in the sliding movement of the plate, the metal bounding one side of the slot being the wall 16 before referred to, upon which rests the bolt shank 15. y

A link or pitman 50 is pivotally connected to one end of this wall and the other end of the link is pivo'tally connected to the circumference of the collar 18, so that a movement of the cam arm 41 in reverse direction to that indicated in Fig. 1 will cause a downward movement of the cam slide 17 which, through the pitman 50 and collar 18, will turn the b'olt a half turn, or to jimmy proof position, such as indicated in Fig. 7, which shows the integral wings 51 of the bolt in horizontal position and therefore unseparable from the keeper plate 1S, unless the bolt is moved so that the wings are vertical and in position to pass through the extended portions 52' of the bolt hole in said keeper, the latter of which can only be done by a key from the outside of the door, or the knob from the inside of the door.

Referring further to the knob 'operated cylinder and in particular to the b'olt operating linger 44 associated therewith, it will be noted that the outer end of said finger passes under the arm 21 and is in position when operated to engage the widened part- 22 of said arm. lVhen this linger is revolved either by key or knob, it will force the arm 21 rearwardly, which will retract the bolt to allow the door to open as shown in Fig. 8.

The bolt will normally be in extended position due to the spring pressure and will be held in position to passthrough the keeper plate by the normal position of the cam slide 17, so that when the door is pushed shut, the curved face of the bolt will be cammed over the edge of the keeper to snap through the opening in the latter as is common in latch locks.

in order that the bolt wings cannot be thrown out of alignment with the corrcspending extensions .1in the keeper when said bolt is being retracted, l provide a raised portion 53 on top of the bolt shank 15 between the collar 18 and the posts lf). my slight retraction of the bolt will place this raised portion between the posts 1S) and prevent any revolving movement of the bolt. Also, and still more important, is the fact that this raised portion lies between one oi" the posts 19 and the collar 18 when the bolt is revolved to jimmy-proof position, thus preventing any retractile movement of the bolt other than that given it by knob or key, as intended.

In operation, it is readily seen that the knob when turned toward the keeper will revolve the lower washer and throw the arm 4l downwardly to operate the slide 17, which in turn will revolve the bolt to jimmyp'roof position. This' same movement is given the arm 41 when the key is used bcc'ause arm 34 will then be moved, and through the pin 46 will operate arm 4l. A reverse movement of the knob or key will give the complete operation. Assuming that the bolt is engaging the keeper in jimmyproof position, a rotary movement of key or knob away from the keeper will cause an upward movement of the arm 41, referring to F ig. 9, which will operate against face 7 of the cam slide 17 until it has toiced the latter upward sulliciently to let the arm 41 move freely past the same; at this time the bolt will, of course, be in position to allow its retraction, and then when the end of the cut out portion 42 of the lower washer 40 contacts with the dowel 45 in the upper washer 43, said latter washer carries the bolt operating linger 44 into Contact with the widened outer end 22 of the bolt retractin-g arm 21 and a continued movement of ther linge 44` draws the bolt to the position shown in Fig. 8, or unlatched position. jtd; this time the bolt is under spring tension and should the key or knob be released, the bolt will be projected to the position shown in Figs. 1 and 3.

rl'he mechanism operated by the key, in the cover plate for manipulating the arm 34, is substantially identical to that described for the knob and will cause the same movement to be imparted to arm 4l, as caused by 'turning the knob.

lt will be particularly noted that when the bolt is in retracted position, as shown in Fig. 8, a turning movement of the knob continuously toward the keeper will allow the bolt to move through the keeper and then turn the same to jimmy-proof position, as shown in Fig. 9.

wr tu) titi Thus I have provided a lock which is jimmy-proof, which can be used to guard against a person being locked out by the acci-dental closing ot the door, as the bolt, when turned to jimmy-proof position when the door is opened, will prevent it from automatically latching should the door be blown shut by adratt or accidentally closed.

Having described my invention, what I claim is l. In a lock, a bolt, means associated with said bolt for normally holding it in extended position, a casing for said lock, a cover for said casing, a knob associated with said casing, and having a cylindrical portion thereon, a plurality oi' washers revolvably operated by said cylindrical portion, and means on said washers for causing the retraction and revolution of said bolt.

2. ln a lock, a casing, a bolt operable in said casing, a knob on said casing, a iinger associated with said knob and disposed within said casing', a cover for said easing, a key operated lock associated with said cover, a cylindrical member revoivably mounted in said cover, a connection between the lock and the cylindrical member, an arm on said cylindrical member, and means associated with said knob and said arm whereby said bolt can be retracted or revolved upon a movement ot the knob or the lock.

3. In a lock, a bolt, a slide in said lock, a shank on said bolt, a collar on said shank through which said shank may have free sliding movement, and a pitman connecting said slide and said collar, whereby a movement ol said slide will cause the rotation oi said bolt.

1l. In a lock, a bolt, a square shank on said bolt, post members between which said square shank passes, said shank being rounded on its diagonally opposite corners in that portion which lies between the posts to revolve only when it is in its normally projected position.

The combination with a lock having bevel headed bolt, of a keeper plate having a central opening and out out portions extending' irom said opening` through which said bolt is adapted to pass, a spring associated with the bolt, said bolt being provided with ears whereby it is prevented trom passing through said keeper plate when said ears and said out out portions are out ofV alignment and said bolt automatically serving as a latch when the said ears and cut out portions are in alignment.

7. lnv a lock, a casing, an anti-jimmy bolt in said casing, a plurality of revolvable nested sleeves journaled in said casing, an operating arm on each of said sleeves, said sleeves when operated in one direction causing, through the medium of said arms, a projection of the bolt and a subsequent revolving movement thereof to anti-jimmy position.

8. in a lock, a casing, a bolt,rhaving a square shank, anti-jimmy projections on said bolt, a plurality o post members adjacent said bolt shank, a rounded port-Eon on said shank, means whereby said shank canV be revolved when the rounded portion thereois between said post members, and means lor moving the bolt to a position where its rounded portion is between said post members.

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