US2192260A - Wire coiling machine - Google Patents

Description

March 5, 1940. C F, FISHER n AL l2,192,260

WIRE coILING MACHINE Filed Sept. 14, 1938 7 Sheets-Sheet 2 l l 3 n o G'aJ/Tan fflske Us su fda/cu?? EFQM/6, Jr:

\ "errug March 5, 1940. c. F. FISHER Er AL WIRE COILING MACHINE Filed Sept. 14, 1938 7 Sheets-Sheet 5 w. L o a Hill J2 D 9., ^no .i 6 3 6 4. J J

:inventors f'fasac 7- 'dwf/57e, By fami-wif? Fan/Afd, -Ue

Gnoreg Y QQ M March 5, 1940..

C. F. FISHER ET AL WIRE COILING MACHINE Filed sept. 14, 193s' 7 Shee 13s-Sheet 4 CHW@ March 5, 1940.

c. F. FISHER Er AL 2,192,260

WIRE coILING MACHINE f l Filed sept. 14, 1958 7 sheets-sheet 5 l 127 30 Z0 V. 22a Jg M/3a iz 74 if .5v

82 ZZ f Q 224 726 l lJes /l I O o NLM) attorney WIRE COILING MACHINE Filed Sept. 14, 1938 '7 Sheets-Sheet 6 'Jmnntors """5 Qnorneg wu DM im@ March 5, 1940. Q F FlsHER Er AL 2,192,260

WIRE COILING MACHINE Filed Sept. 14, 1938 7 Sheets-Sheet 7 'Jnvcnlora uww@ @QM M lPatented Mar. 5, 1940 UNITED STATES WIRE COILING MACHINE Clayton F. Fisher, Spencer, and Edward E. Franks, Jr., Worcester, Mass., assignors to Sleeper & Hartley, Inc., Worcester, Mass., a corporation of Massachusetts Application September 14, 1938, Serial No. 229,958

27 Claims.

This invention relates to a wire coiling machine, and particularly to a machine which will form a plurality of spaced coils on a wire.

'I'he primary object of the invention is to provide a machine of this class which will form a series of coils spaced by straight wire portions `and sever the same in a desired length.

A further object is to provide a machine of this type which may be adjusted to provide coils of desired pitch and number of turns as well as to sever the wire after a predetermined number of spacedv coils has been formed thereon.

A still further object is to provide a wire coiling machine which will make the coiled parts vexpeditiously and economically and which will coil and form the desired product from a Single long piece of wire and cut the same in desired lengths without requiring manual operations. y

Another vobject is to make a coiled Wire strip suitable for use as a loose leaf book binder. Still other objects will be apparent in the `following disclosure.

Referring to the drawings, we have there shown a preferredembodiment of'this invention in which:

Fig. 1 is a plan View of a book binding coiled wire made by our machine;

Fig. 2 is a side View of the same looking in the direction of the arrow 2 of Fig.` 1 and showing its use in binding loose-leaf' pages into, a binder;

Fig. 3 is atop plan View, with parts broken away, of a machine constructed for making said coiled wire;

Fig. 4' is a side elevation thereof, looking in the direction of the arrow 4 of Fig. 3;

Fig. 5 is a detail showing a part of the' driving mechanism with the gear segment removed;

Fig. 6 is a section on the line 6-6 of' Fig. 5;

Fig. 7 is a fragmentary View of the reduction gearing for driving the cam that controls the wire cutting operation, looking in the direction of the arrow l of Fig. 3;

Fig. 8 shows a fragmentary view of the leading end of the Wire asv it is iirst bent prior t'o the wire "f coiling operation;

Fig. 9 is a sectional Vertical elevation, partly broken away, showing the coiling arbor and driv Fig. 11 is a fragmentary section taken on the line II-H of Fig.

Fig. l2 is a similarview showing a different 55. position of the parts;

Fig. 13 is a fragmentary detail of the coiling arbor and associated parts as they are located Aat the beginning of the wire coiling operation;

Fig. 14 is a similar View showing the locations of the parts when the wire has been coiled;

Fig. 15 is a fragmentary section on the line I 5-I5 of Fig. 14, but with the parts in the initial coiling positions of Fig. 13;

Fig.116 is a similar sectional view of the parts as arranged in Fig. 14; i

Fig. 17 is a fragmentary sectional view taken on the line ll-Il of Fig. 3;

Fig. 18 is a sectional view on the line i8`l of Fig. 17; V

Fig. 19 is a fragmentary sectional View on the line I 9--19 of Fig. 10;

Fig. 20 is a plan View on the Fig. 19;

Fig. 21 is a detail of the parts arranged for bending thewire at the end of the coilingopera-v tion; j

Fig. A22 is a fragmentary section on the line 22-22 of Fig. 20;

line 2in-'2n of Figs. 23, 24 and 25 are details showing the steps involved in bending the wire at the end o the coilingtoperation; k g

Fig. 26 is a detail taken on the line 26-26 of` Fig. i Fig. 27 is a View corresponding with Fig. 25 showing the start of coiling another coil;

Fig. 28 is a sectional view on the line 28-e28 of Fig. 3;

Fig. 29 is an elevation looking in the direction of the arrow 29 of Fig. 28; f

Fig. 30 is a sectional view on the line 3--30 of Fig. 29; y

Fig. 3 1 isa sectional view on the line 3 l-3I of Fig. 29; Fig. 32 is a detail in elevation, looking in the directiony of the arrow 32 of Fig. 30, or the reverse side of Fig. 29;

Fig. 33 is a sectional View on the line 33-33 of Fig. 3; and Fig. 34 is a fragmentary detail of a cutter shown in Fig. 33, as positioned just prior to the` cut. 4

This machine is intended primarily for maka` ing a wire having a series of spaced coils, as shown in Figs. 1` and 2, which are so constructed and arranged that loose-leaf sheets of paper may be bound thereby into a binder, although it will be appreciated that the machine is also adaptedY for making wire coils for various uses. The book ybinder comprises a resilient Wire coiled to form several loops l0 spaced by thi .straight pieces Il' which are arranged in substantial alignment with one another and with a given peripheral portion of the coil. This coiled wire may be of the size shown inFigs. 1 and 2 and of varying lengths, although the diameter of the coil and the spaces vthereof may be widely varied. The straight portions ll of the bindingwire are intended to be secured between the covers of the book or binder with the coils l0 projecting between ythe covers in such positions as to vsecure in place a set of paper sheets l2 which have T- shaped slots I3 and flaps i4 interfitting withzthe coils, as shown in Fig. 2. I'hese sheets of paper may be inserted either by squeezing the coils `together or by merely bending the aps -M ofthe paper so as to allow them to slip into place. This type of coiled wire maybe made from a long piece of Wire and cut oi in desired lengths.; for use in the book binders.

'Ihe machine for making the coiled wire is 'so constituted and arranged that the wire I5 (Fig.

3) is drawn from a supply reel i6 of suitable co.n`

` ciprocated member determines the pitch of the coil or the spacing of the loops ofthe wire. The number of loops of the coil is determined by the operation of a reciprocable gear segment-25 (Fig. 4) and driving mechanism that is adjustable to rotate the arbor through a required number of turns. By the time the gear segment hasreached the end of its forward drive, .the feeding'wire l5 has been made into the desired number of coils and the wire'then butts against the side of an upstanding stop 28 (Fig. 14) whichis longitudinally adjustable to vary the length of the coiledportion of the wire. Then a finger 39 moves forward from the position of Fig. 14 to that of Fig. 23 where it lies back of the upper part of the last wire coil on the opposite side of the wire from thestop 28. Then a grooved revoluble member 32 moves vdown and straddles the Wire and revolves in the direction of the'arrow in Fig. 23 so as `to bend the wire outside ofthe coil into the position shown in Fig. 24. The finger 30 holds the coil against the thrust of the bending operation. VThis leaves a portion 3B of the Wire arranged at substantially rightV angles to the straight portion I l and thus in position for forming another coil.

The' machine (Fig. 4) comprises bed plates `4t! arranged to carry the shafting and supported `on l base frame 4|, which in turn carry adrlving mosliding block 53 carried in under cutslideways 54' (Fig. 6) and adjustable into positio-nradiallyrof the gear 50 by a hand operated adjusting screw 2,192,260 n j y 55. 'I'his pin 52 engages a suitably shaped holev in the block 5B (Fig. 4) which is slidably mounted in a slot 59 in the gear segment 25. The latter is rpivotally mounted on a short shaft El on the keyed on lthe end of the cross shaft 62 (Fig. 9)

which has keyed on its opposite end a large gear 54 driving a small gear 56 fixed on a sleeve 59- mounted on the ball bearings T9 which are in.

turn suitably mounted in the surrounding housing 'Hon the frame. The right hand end of the sleeve 69 is tapered to receive the spring collet 12 slidably fitted therein and held in position by the clamping `bolt 68. "A nut 13 on the opposite end of the bolt 68 serves to draw the collet tightly 'into the sleeve and make the sleeve and shaft rotate. together. `The collet is hollow and has slots in itssides forming resilient members adapted to clamp'against the left hand v' end of the arbor i8 and hold it position for rotation.V This makes it possible to utilize arbors of diierent diameters andlengths 'for making diiferentl types of Wire coils.- They arbor I8 has a tapered is of large diameterr and shaped to bear against` thev in-feeding wire at the end of the operation' stroming the straight part n ofl the binder Wirefas shown in Fig. 24.- That is, the revoluble4 member 32' forces the wire against the inner face of this collar andbends it at right angles thereagainst and thus leavesthe wire in proper position for forming a `new coil.` v l When the wire l5 is first threaded'throughwthe guide or sleeve 20 for starting a ceiling `operation the advance end is bent by hand `at right angles, as shownfin Fig. 8, and this bent portion is positioned back of the pin I9 for starting the first coil. As shown in Figs. 11, 12 and V13, the starting end 89 of the Wireis held against the arbor I8 by means of vtwo clampingr jaws 82 and 83 having half cylindrical surfaces thereon of a .slightly larger radius vthan that of the arborplus thethickness of the `wire thereon, so that the jaws will hold the wire in interlocking engage-l ment-With the pin. i9 and the latter will drag the Wire therewith and cause it to coil lon the arbor. The clamping jaw S2 (Fig. .1.2)4 is mounted on a rocking lever 86, and the other jaw 83 is mounted on a rocking lever81, both of which are pivoted on the short shaft BB suitably mounted on the framework.- A continuation 89' of the Yleverii has the roller 90 thereon, and a similar continuation 92 of the lever 8T has another roller 93.'

sav

thereon. These rollers are adapted vto engage l cams 94 and 95 mounted on the shaft 98. This cam shaft (Figs. 3 and 4) has a vgear 99 keyed thereon, which meshes'with the gear 59 randl thus 'is rotated at a Very slow' speed, which is once for the total number of convolutions of the 'coil to be made, such as 4.75 turns of which four remain after the coil has unwound due to the resiliency in the wire. These cams are so shaped that the clamps are held stationary surrounding the advance end of the wire during the entire stage of making the convolutions, as shownin Fig. 12, sothat the Wire cannot escape from'contact with the driving pin I9. l A spring |90 serves to hold the jaw levers against the cams.

30 collar 14 secured thereto by a set screw and this `v The pitch of the coil is determined; as'above stated by the guide or sleeveA 20 carried on the slide block 2-2 which is moved ste-adily towards the left during the coiling operation. This mo-V tion is accomplished by an adjustable linkage |05. (Fig. 3) which is connected to the upper end of a rocking lever |05 pivoted at |01 on the framework. roller |08 engaging the side face of a cam ||0 on the cam shaft 98. This cam isrso shaped that, as the arbor makes its complete number ofturns in the coiling direction, the slide block and its sleeve 20 will move at a desir-ed rate of speed towards the left. The rate of thisspeed of the pitch of the coil may be varied by changing the cam for another of a different face shape. The f rod |05 has a turnbuckle |09 therein to. adjust its length and thus adjust the starting position of the coil.

At the end of the coiling operation, the wire I5 has been moved by the sliding guide or sleeve 20 so that it now touches the inner face of the stop 28 (Fig. 9) which is an L-shaped member adjustably mounted on the framework of the machine. The throw of the gear segment has been so adjusted that vthe rotation of the arbor stops when. the wire is at thisI point. Then'7 the finger 30 moves forward, as above described, to hold the wire in position. This finger 30 is tapered, as shown particularly in Figs. 14 and 24,`

so that it slips in between the `last coil and the straightaway portion of the wire |5 and it serves as a backstop to take the back pressure of the coil when the next stage of vbending the wire is effected. As shown in Figs. 17 and 18, this linger 30 is movably mounted on a blockv |20 pivoted at |23 on a dovetailed slide |2| mounted on a slideway in the top of the member |22 suitably carried on the base. The block |20 is held in an adjusted position by a cap screw |21 passing through anv elongated slot in the block |20 and threaded in the slide |2|. 30 laterally to position it tightly against the wire when the bend is made.

The rear end of the slide |2| is connected to the short upper end of the lever |24 pivotally mounted at |25 on the base of the machine. The lever has a roller |25 adapted to be' moved by the peripheral face of the cam |28 mounted on the cam shaft 08 and held in place by av spring |30. This cam is so shaped that the nger 30 moves to engage the last convolution of the coil only after the coiling has been finished Vand to stay there during the next step of bending the wire. Then the finger 30 is removed from contact with the coil and another coiling operation may proceed. As shown particularly in Fig. 16, the stop 28 engages only the lower half of the coil, while the finger 30 engages the upper halfof the coil on the opposite side of the wire. These two parts, although not opposite each other, nevertheless serve as a guide which holds ther wire therebetween and it permits the wire to be bent above the top edge of the stop 28.

On the top of the housing 1| which carriesthe arbor and its ball bearings, as shown in Fig. 9, is mounted a bracket |35, which supports a vertical shaft |38. An arm |39 (Figs. 10, 19 and 20) which is pinned on this shaft |38 has a roller |40 on its inwardly bent end which engages the side face of the cam |42 keyed on the shaft 98. Loosely mounted on the shaft |38 is a swingingv gear segment |44 (Fig. 20) and keyed tothe shaft |38 isI an arm |40 which is wider than the gear segment |44. This arm has two upstanding lugs The lower end of this lever has a" This adjustment moves the finger |48 which carry adjusting screws |49 therein 'ar-- l ranged to engagethe opposite sides of the gear return this .arm |46 and the segment H311-,v The gear segment |44 mesheswith a small pinion |50 on av shaft |5|`. This gear |50 is mounted between the arms of a yoke |52. On a continuation of the yoke |52 is a vertical projection |55 which y.is dovetailed in shape and serves as a slide adapted to intert with a. slideway |55 in the housing 1|. `The springs |58 (Fig. 19) serve to holdthe slide in an uppermost and inoperative position. f

The lower end of the shaft |5| (Fig. 9) carries a disk shaped head arrangedV to receive and support the wire vbending member 32. Two cap screws |62 (Fig. 21) serve to secure the element 32 on the head. The member 32 is shaped as a downwardly projecting, narrow, tapered body, and it is provided with a slot in `its under face of a size slightly greater than the diameter of the wire, so that it will straddle the sameat the endof the last convolution and beyond the stop 28 and the back member 30. The'gear 50 therefore serves to rotate the wire bending tool 32 at a required time as driven by the gear segment |44 which in turn is operated by the lcam |42.

As shown in Figs. 19 and 22, an arm |10 projects outwardly from the slide |55 near its bottom end. The outer end of this arm |10 engages an adjustable screw |12 on the end of a further rocking lever |14 pivoted at |15 on the member |22. A- roller |15 on the opposite end of this rocking lever engages a cam |11 keyed on the cam shaft 98. This serves at a predetermined time to move the slide upwardly or to allow it to move down, so that the wire bending tool 32 will engage the wire as needed. The bending tool 32 has a length substantially equal to the straight portion on the nished product.v The right handy edge of the forming tool 32 (Fig. 22) is slightly to the left of a vertical diametrical line of the arbor and coil but close enough thereto so as to form av very sharp bend |10 (Fig. 2li) in the wire.

The sleeve or guide 20 is located somewhat above the top of the arbor so that when the forming tool 32 comes down and grips the wire,

`it will bend the wire vslightly downwards, as

shown in Fig. 22.v 'I'he resiliency of the wire thus tends to lift the coil after the forming tool 32 has receded from contact therewith.` That is, as shown in Fig. 26, when the jaws 82 and 83 are opened, the coil is lifted so thatthe upper portion of the coil is above the forming pin I9. Hence, the resilience of the wire holds the coil in that position and the forward movement of the coil caused bythe reverse movement of sleeve 20 towards the right will carry it past the pin I9 to the position shown in Fig. 27. Both of the segments |44 and 25 return to their initial starting ypositions while the clamping jaws S2 and 83 are in an open position. This allows the arbor pin I9 to revolve in a reverse direction to its starting position and not to interfere with the loops of the coil. That is, the spring wire, owing to its natural resiliency, will open up to a much larger loop than the diameter of the ceiling arbor. hence there is room inside of the coil for the ceiling pin |9,to revolve freely to its starting position. At the end of the return stroke of the driving segment, the pin I9 has revolved to a point where-it may contact the bent loop |18 fief alst

Contact with the pin |9 so that a new coil will bek started. The coil that has been previously made is free and revolves about its axis asthe next loop of the wire is being formed, an enlarged recess |19 being provided in the jaws for receiving the coiled wire.

During the time that the forming tool 32 swings around to bend the wire (Fig. 23) the sleeve 28 is being moved onits slide block to the position shown in Fig. 24, where the straightportionll lof the wire is in line with the sleeve. Then the sleeve 28 moves again towards the right to the position shown in Fig. 21 and thus shoves the previously made coil out of the coilingposition and leaves the wire ready for making a new coil. The coiling operation then proceeds anew, and the cycle of operations is repeated until the required number of coils has been made and the wire is to be cut oi.

The wire with its `spaced coils comes oi the coiling arbor and ultimately rests in a trough |88 which' serves to support the same in the ma# chine while it coils; alsoit centers the. coil relaf tive to the arbor so that the pin |9 may revolve freely during 'its return stroke. Ihis V-shaped trough |88, as shown particularly in Fig. Y28 is supported on two rocking arms |82 which are pivotally mounted on a cross shaft |84 suitably supported on the machine frame. A further arm |86 (Figs. 3 and 28) is keyed to the shaft, and this has a roller |81 thereon engaging the peripheral surface of the cam |88 which is keyed to the cam shaft 98. This cam has a high cylindrical surface, as shown in Fig. 28, which serves to hold the trough inthe position o f Fig. 26

slightly away from the coil during the wire coiling operation. Then the roller |81 rides onto a lower cylindrical portion of the cam` and lifts the trough |88 into the position shown in Figs. 28

and 34, where vthe trough acts as a support for the coiled wire against the pressure of the wire cutting tool. i

The cutting operation is accomplished by means of a stationary cutter |98 (Fig. 33) cooperating with a movable cutter |92 arranged to grasp the wire therebetween and cut the same. The stationary cutter |98 is a suitably shaped rectangular bar with a sharpened rear edge which is removably inserted in a slot |93 in the right hand end of the rocking arm |94 and is held in place by a removable plate |95, as illustrated. The arm |94 is pivotally mounted on a stud |96 carried by a bearing |91 suitably mounted on the framework of the machine. The left hand end of .the rocking lever` |94 has a roller |98 thereon, which engages a cam 288 mounted loosely on the cam shaft 98. This cam 288 has a single hump on its periphery, as shown in Fig. 33, which is adapted to lift the roller |98 momentarily and to rock the arm |94 bearing the cutter knives.

The other cutter tool |92 is slidably mounted in a groove in the swinging arm 282 andheld in place by a plate 283, and it is adjusted to a desired position by a screw 284 threaded through the rocking arm 282 and engaging the rear of the cutter bar |92. 'The arm 282 is pivotally mounted on a stud 288 secured in the side of the rocking lever |94, so that the cutter |92 may swing relativeto the other cutter. This swinging motion is accomplished by means of a rocking lever 288 freely pivoted on the stud |96 and connectedb-y a short link 2|8 with the swinging arm 282. Thisy lever 288 has a roller 2 |'2`on its `'lower end engaging a further cam 2| 4 also loosely mounted on the camshaft 98; A spring 2|5 tends to hold the two rollers on the levers in engagement with their respective cams.

The two cams 288 and 2 I4 are fixed on a sleeve 2|6 whi'ch is loosely mounted on the shaft 98.

This sleeve has a member 2|8 integral therewith at its right hand endA which is shaped as a spool (Fig. r29) providinga deep annular groove 228 within which rides the upper end of a lever 222.

The latter is a part of a clutch mechanism that; 'controls the number of coils that may be made on the wire before the cutters sever it. This spool shaped member 2|8` is rotated by the shaft 98 at certain timed intervals as determined by the clutch mechanism to be described. I The clutch mechanismwhich locks the spool 2|8 to the shaft 98 comprises the swinging lever bar normally rides with the spool, and it locks the spool to the rotating member 232 only when` the bar 228 has been slid vinto the slot 2738.Y The bar is moved from its unlocked position to. alocked or clutched position by means of the arm 222 which is provided with a beveled end 234 engaging a correspondingly shaped part projecting upwardly from the sliding bar 228. The lever v222 is normally in the position of Fig. in which its beveled end engages the beveled block 228Vand holds the sliding'bar 228 out of the groove 238, so that the spool is not rotated. When the lever 222 is, however, moved in the oppositev direction by va cam mechanism, it swings away from the wedge block and the spring 229 then lcauses the sliding bar to strike against the inner face of the rotating member 232 and ride thereagainst until the groove 238 comes around, whereupon the bar slips into thev groove and thus locks thevs'pool 2|8 to the rotating sleeve 232 which in turn is'driven by the cam shaft 98. l

The clutch mechanism is controlled by a cam Y 248 (Fig. 28) mounted on a short shaft 24| on the machine. This shaft 24| is rotated, as shown in Fig. -7,`by means of a large gear 242 keyed to the shaft'24l which is driven by a small gear 243 on a further short shaft 244 which carries a large y gear 245 keyed thereto. This large gear is in turn driven' by a small gear 248 on the camshaft 98. These parts are so constructed and arranged that the large gear 242 and its cam, 248 are ro.y tated at a very slow rate as compared with the cam shaft 98. The gear ratio may be varied as desired by an exchange of gears, and this makes v this latch has a downwardly projecting lug 256 '(6" adapted -to serve as alatch to hold against the sof The rocking lever fagiefneo pointed top 28l of the lever 252. connected to the rocking latch 254 and a plate projecting from the lever 252 tends to hold the latch in its locked position, so that when thek cam 24E-rotates and pushes on the roller 250it causes the lever 252 to move towards the right and thus move the lever 222 with it. When the high part of the cam 2limoves its levers towards the right, this releases the locking bar 22@ and causes it to engage the slot 2311 and lock the spool 2|8 to the driving plate 232. This causes thecams 2M and 2| 4 to rotate and operate the cutter bar mechanism. The spool 2|8 has a pin 260 (FigpZS) projecting from its periphery, and this pin is adapted to strike against the lefthand'end of the latch 254 and lift the latch from its locking position and permit a spring 262 (Fig. 29) on the bottom of the lever 222 to swing the same forward into engagement with the sliding bar 228 and thus pull the bar from its locking position. That` is, the pin 260 on the spool unlocks the latch for each revolution of the spool, so that the spool canmake only one complete revolution before the clutch is thrown and the spool is stopped. A spring 212 holds the lever 252 with its roller against the cam. v

The rotation of the cams 290 and 2|4 by this clutch mechanism first causes the roller |98 to strike the hump on cam 201i and swing the right hand end of the rocking bar |94 downwardly until the wire is located in a space 21B (Fig. 34) between the fixed cutter bar |90 and the notched end of the movable bar |92. Then after this has taken place, the `hump on thesecond cam 2111 strikes the roller 212 on the rockinglever 208 and thrusts the movable cutter |92 towards the right and thus severs the wire. The roller |98 will not'have passed the hump 201| before the cutting operation takes place. The cutter partsr are so located as to cut substantially half wayv between two coils and thus leave a projection on each end of the binder wire, as shown in Fig. 1. The cutter assembly is held in position by cap screws 214 set into the frame and located in long slots in thesupport |91, so that the cutters may be adjusted along the wire and thus form long or short ends (Fig. 1) on the coiled wire binder.

The operation of this device will be apparent in view of the above disclosure. The machine comprises a rotatable, non-reciprocating arbor which is rotated intermittently through a predetermined but variable number of turns. The arbor has a coiling pin I9 thereon adapted to engage a bend in the wire and'to windthe wire around the rotating arbor. The incoming wire is fed tangentially to the arbor from a` source ofv supply which includes straightening rolls I1 that grip the Wire with sufficient pressure to insure a considerable frictional drag and thus make the wire coil tightly about the arbor. The pitch of the coiled wire is determined by the longitudinal sleeve or guide 20 which is reciprocated by cam mechanism through a given distance and at a rate that'is determined by the throw of the cam. The distance and rate may be varied by changing the shape of the cam,| 1D or otherwise adjusted, such as by varying the position of the pivot point |01 of the lever |06 that is movedY by the cam IIU. The adjustable turnbuckle |09 determines the starting or stopping positionsr of the wire. The driving mechanism, which includes the driven gear segment-25 and its adjustable connection with the driving gear 5|), determines f the extent of rotation of the arbor I8 and thus A spring 259 arefwound on the arbor during its forward motion. The pitch determining sleeve or guide2|l moves steadily ina lateral direction to wind the wire in evenly spaced coils. When it reaches its end position as determined by the throw of its driving cam the wire then comes against the stationary but adjustable stop 28 so that the pitch changes at this point and the wire is substantially at right angles to an axial plane, as shown in Figs. 23, 24 and 25. The arbor is substantially stationary at this time while the gear segment drive for the arbor is going over dead center, and the bending tool 32 is lowered by its cam |11 and the cooperating levers |14 and the arm |10 (Fig. 19) so that the bending tool straddles the incoming portion of the wire I5. Before the bending tool 32 can rotate, the iinger 3B is also moved forward by its cam |28 (Fig. 17) so that it is in the position of Fig. 23 and forms with the part 28 a guide which holds the coiled wire immovable while the bending takes place. Then the member 32 is revolved by its driving gear |50 and the gear segment iddy which are in turn actuated by the cam |22 (Fig. 20). This bending tool 32 revolves from the position of Fig. 23 to that of Fig. 24, and preferably slightlyy more than 90, so that thel natural resiliency in the wire may be permitted to straighten the bend to some extent and leave the Wire substantially parallel with a diametrical plane of the arbor. Then the pitch determining sleeve or guide 2t, whichhas moved rapidly to the left as the tool 32 bent the wire,V now starts back towards the right.l The clamping jawsil2 and S3 have heretofore been in the closed position of Fig. 12 during the coiling operation so that the wire cannot jump of the coiling pin i9. The cams 94 and `95, which control thesejaws, are so timed relative to the other mechanism that the jaws are open by the'time the coiling pin I9 has made a turn or partial turn in the non-coiling direction, and then permits the coil of wire it to expand under its natural resiliency and thus be released from the coiling pin. The 'j aws in their wide open position permit the coil to be moved to the right as the sleeve 2B travels rapidly to its initial starting position where the straight portion i5 of the wire strikesthe pin I9. Then thearbor and coiling pin I9 start again in their reverse directionand they sleeve 2d again moves to the left for a new coiling operation. At the same time, the jaws close to prevent the wire from'jumping off the pin. v

This coiling operation is repeated until the desired number of lcoils have been formed on the wire. Then thecutter timing mechanism comes into play and the cutting tools governed by the cams 2%- and 2li sever the wire at a time when the trough mi)` has been moved upwardly by its cam |38 to `serve'as a rest to steady the'wirewhile it is being cut. The cutters'are preferably so timed that the recoil or uncoiling of the coiledl wirel has stopped after the jaws have opened sothat. the coiled wire is stationary.v The clutch stitute other types of speed control mechanism" therefor. The cam 240 and associated mechanis'm controls: the clutch-` connection i of the spool itA 4to be produced.

v2m to the driving plazsz and thus contres the operation of the cutter cams.

.'Ihe` position of cutting the wire between two coils is determined by sliding the cutter assembly back and forth. If it is desired to have no wire projecting from the end coils, then two pairs of cutters may be placed side by side in the Ycutter mechanism and operated simultaneously so as to cut out a predetermined `portion of the Wire and cause that part to be removed from the object It will be appreciated that many other changes may be made in the constructional features of this mechanism and that one may substitute equivalent mechanical movements for those shown in the drawings. For example, one may use adjustable cams and thus avoid the necessity for changing the cams to vary their action. Other constructions may also be employed to vary the throw of the cam follower for each of these cams.

"Also, equivalent devices, such as slots and shoulround the arbor and pin may be employed in place cluding a guide reciprocated in timed relatlon ders formed on the coiling arbor may be substituted for the coiling pin. It will further be appreciated that the'clampingv jaws 82 and 83 formV a tubular member which is movable to hold the wire operatively associated with thev coiling pin during production of the coil and thereafter to permit recoil or expansion of the coiled wire and leave it free for movement along thearbor;

hence various tubular constructions which `surof the split tube here shown. Also the guide 20 may be variously shaped and arranged to deliver or feed the wire to the arbor and determine the pitch, as well as to move the coil axially along the arbor. The finger 32 andthe collar 14 form spaced stops against which the Wire is bent, and it is to be noted that each contacts with the wire on the outside of the bend so as to allow the wire to take a natural shape determined by its physical i properties and thus avoid cutting the wire. I-Iow-` ever, other constructional arrangements may be substituted therefor which will serve to shape the incoming wire after one coil has been made and leave the wire positioned for making a second coil spaced from the first. It will also be understood that various constructional features herein described may be used in other types of wire coiling apparatus, such as one which .comprises a reciprocating, yrotating arbor, and that they are `-not necessarily limited in their use to the machine shown in the drawings. Hence, the above disclosure is to be considered as illustrative of the invention and not as limiting it except as denedz by the claims appended hereto.

We claim:

1. A wire coiling machine comprising a rotatable, non-reciprocable arbor having a coiling pin thereon, means for rotating the arbor intermittently in opposite directions and means inwith the arbor rotation which feeds wire to the arbor and determines the coil pitch during movement in one direction and which moves the coil` `axially along the arbor during the reverse movement thereof.

2. A' wire coiling machine comprising a ro` tatable, non-reciprocable arbor having a coiling pin thereon, means for rotating the arbor intermittently in opposite directions, means including 'a guide reciprocable parallel with the arbor axis in one direction for feeding wire to the arbor and determining the pitch of the coil and in the other direction to move the wire coil axially of the arbor, and means associated therewith for shapf arbor and determines lthe pitch of the coil while'V moving ink one direction and whichl moves the coil axially along the arbor when the coil is released from said pin.

4. A wire coiling machine comprising means including a rotatable arbor having a coilingr pin` l for making a wire coil on the arbor and a tubular member surrounding the arbor and coiling pin for holding the coiled wire in position against the pin during the coiling stage;

5. A wire coiling machine comprising means` including a rotatable arbor having a coiling pin thereon arranged to engage and coil a Wire delivered thereto, and means providing a movable tubular member surrounding the coiling pin and arbor which is movable to hold the wire in engagement with the pin during the coiling operation and thereafter release the coil.

6. A wire coiling machine comprising a rotatable, non-reciprocable arbor havinga coiling pin adapted to wind wire thereabout, a Wire feeding guide reciprocable parallel to the axis of4 the arbor which determines the pitch of the coil When moving in one direction and `which moves the coil axially along the arbor when moving in the opposite direction, and means comprising a A` tubular member which holds the wire inv coiling contact with the pin during the coiling operation i and thereafter permits removal of the coiled wire from the arbor.I

7. A wire coiling machine comprisingvauro- I tatable, non-reciprocable arbor having a coiling f pin thereon, a pair of jaws movable to provide a tubular surface surrounding the arbor and coiling pin and holding thewire in engagement there# with during the coiling operation, a reciprocable guide for feeding wire to the arbor and deter-k rnining'the pitch of the coil while moving in one direction and which moves the coil axially along the arbor when moving in the opposite direction and means for opening the tubular jaws topermit recoil of the wire and removal of the coil past the coiling pin. i 8. A Wire coiling machine comprising a ro'- tatable, non-reciprocable arbor having a coiling pin thereon, a guide reciprocable for lfeeding wire to the arbor and determining the pitch of the coil when moving in one direction and or'removing the coil from the arbor while moving in the opposite direction and means actuated in timed relationship with the guide movement for severing the coiled wire.

9. A Wire coiling machine comprising arotatable, non-reciprocable arbor having a Acoiling pin thereon, a guide reciprocable parallel with the arbor axis for feeding wire to the, arbor and determining the pitch of the coil while moving in one directionv and for moving the coil axially along they arbor duringl the reverse movement,`

means for shaping the end of the wire after the coiling operation, and cutter mechanism. oper-y ated in timed relationship therewith for severingthe end of the shaped wire. Y .Y

10. A wire coilingv machine comprising a ro-V tatable, .nonreciprocable arbor .having a coiling Iits.:

pin thereon, means including La. reciprocable guide for feeding wire to the arbor and determining the .pitch of the coil Vand thereafter moving the coil axially along the arbor, means for bending the incoming portion of the wire and leavingit positioned for a further coiling operation and means for severing the wire after a multiplicity of coils has been formed thereon.

l1. A wire coiling machine comprising a rotatable, non-reciprocable arbor having a coiling l pin thereon, means including a, reciprocable guide lengagement with the revolvingcoiling pin, and

means associated With the coiling pin for holding the wire in operative contact therewith during the coiling operation and for releasing the same to permit axial movement thereof.

12. A .wire coiling machine comprising a rotatable arbor, ,means for rotating the arbor and forming a coil of wire thereon, means comprising a movable member for bending the end of the coiled wire towards a diametrical plane of the arbor, and means for supporting the wire against the bending thrust which contacts with the wire on that side which is on the outside of the bend.

13. A wire coiling machine comprising a rotatable, non-reciprocable arbor .having a coiling pin thereon, a guide reciprocable for feeding wire to the coil and determining the pitch thereof, means including a movable bending tool which engages the incoming wire at the end of the coiling operation and bends the same, and means for holding the wire coil against the bending stress.

14. A wire coiling machine comprising a rotatable, non-reciprocable arbor having a coiling pin thereon, a guide reciprocable for feeding wire to the coil and determining the pitch thereof, means including a movable bending tool adapted `to engage the wire at the end of the coiling operation and to bend the same towards an axial plane of the arbor and means including a finger movable to engage and support the wire against the bending stress and thereafter release the wire.

15. A wire coiling machine comprising a rotatable arbor having a coiling pin for winding a wire fed thereto, means associated therewith for making a coil of predetermined pitch and number of turns on the arbor, a stop remote from the finished coil and. means which grips the incoming straight wire and bends it against said stop and thus forms a straight portion connected with the coil.

16. A wire coiling machine comprising a rotatable arbor having a coiling pin for winding a Wire fed thereto, means associated therewith for making a coil of predetermined pitch and number of turns on the arbor, two stops, one located near the finished coil and the other remote therefrom, and means which grips the incoming wire and bends it against the stops and provides ya straight portion connected with the coil which is at an angle to the incoming wire.

17. A wire coiling machine comprising a rotat- `for feeding wire to the coil and determining the pitchthereof and in theother direction for moving the coil axially of the arbor, means including a bending tool arranged to engage the wire at the end of the coiling operation and bend the same towards an axial plane of the arbor and thereafter to release the wire and means for operating the parts in a timed relationship so that the guidemoves in the same direction during the wire coiling and bending stages and thereafter moves the bent wire into position for making another coil.

19. A wire coiling machine comprising able, nonreciprocable arbor having a coiling pin thereon, a guide reciprocable for feeding wire to the coil-and determining the pitch thereof, means therefrom, a support carrying the removed coil,

a cutter opposed to said support and means for moving the cutter and support relatively to hold the coiled wire stationary and to sever the wire.

21. A wire coiling machine comprising a rotatable, nonreciprooable arbor having a coiling pin thereon, a guide reciprocable for feeding wire thereto and determining the pitch of the coil while moving in one direction and for removing the coil from the arbor when moving in the opposite direction, a support for receiving the coiled wire which is movable towards the coil axis, a cutter opposed to said support, means for moving the support to hold the coil stationary and means actuated in timed relationship therewith to operate the cutter and sever the supported wire.

22. An apparatus of the type covered by claim 21 comprising two cuttersindependent of said support which engage opposite sides of the wire and sever the same.

23. A wire coiling machine comprising a rotatable, non-reciprocable arbor having a coiling pin thereon, a guide reciprocable in opposite directions to feed wire to the arbor and determine the pitch of the coil and thereafter to remove the coiled wire from the arbor, means cooperating therewith for bending a portion of the wire towards a diametrical plane of the coil and leaving the wire positioned for making another coil, and means including a cam actuated cutter mechanism operated in timed relationship with the wire coiling and bending mechanism which severs the wire after a predetermined number of coils have been made thereon.

24. A wire coiling machine comprising a rotatable, non-reciprocable arbor having a coiling pin thereon, means including a reciprocable guide for feeding wire to the arbor and determining the pitch of the coil and thereafter moving the coil along the arbor, means for `rotating the arbor j for making another coil spaced from the first and means for severing the wire after a predetermined number of coils has been made.

25. A wire coiling machine comprising a rotatable, non-reciprocable arbor, having a coiling pin projecting therefrom and engageable with the Wire to be coiled, means including a reciprocable guide for feeding wire to the arbor and determining the pitch of the coil and means which serves to hold the Wire in engagement with the coiling pin during the coiling operation but which releases thecoiled Wire thereafter for movement axially of the arbor.

26. A wire coiling machine comprising a rotatable, non-reciprocable arbor having a coiling pin projecting therefrom and engageable with the v Wire to be coiled, means-for. rotating the arbor intermittently, means including a guide which is reciprocated in timed relationship with said rotation for making a coil of predetermined pitch f and length on the arbor, and means which serves' toA hold the Wire in operative association with, said varbor and pin during `the coiling operationvand` which thereafter releases the coil for axial movement along the arbor bysaid guide.

27. A wire coiling machine comprising a rotatable, non-reciprocable arbor having a coilingpin projecting therefrom'and engageablewith the wire to be coiled, means including a reciprocable guide cooperating with the arbor and pin for making a coil of Wire of a predetermined pitch and length, and means associated therewith which holds the end of the coil fixed in position and bends the uncoiled wire only at a given point to provide a predetermined shape.

CLAYTON F. FISHER.

EDWARD E. FRANKS, Jn.;

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