US1123824A

US1123824A - Machine for making wire garment-stays.

Info

Publication number: US1123824A
Application number: US86789814A
Authority: US
Inventors: Frank L O Wadsworth
Original assignee: SPIRELLA CO
Current assignee: SPIRELLA CO
Priority date: 1914-10-21
Filing date: 1914-10-21
Publication date: 1915-01-05
Anticipated expiration: 1932-01-05

Description

F. L. 0. WADSWORTH;

MACHINE FOR. MAKING WIRE GARMENT STAYS.

APPLICATION FILED OCT. 28. 1912. RENEWED OQT. 21, 1914.

L1 gg ggQ Patented Jan. 5, 1915.

6 SHEETS-SHEET 1.

IN V EN TOR.

M A TTORNE Y.

WITNESSES:

F. L. 0. WADSWORTH. MACHINE FOR MAKING WIRE GARMENT STAYS.

APPLICATION FILED OCT. 28. 1912. RENEWED OCT. 21, 1914. 1 m3, g% Patented Jan. 5, 1915.

6 SHEETS-SHEET 2.

WITNESSES: INVENTOR. %%%AM a 5!! By g gr W W 2. l l ATTORNEY.

F. L. O. 'WADSWORTH.

MACHINE FOR MAKING WIRE GARMENT STAYS. APPLICATION FILED OCT. 28. 1912. RENEWED OUT. 21, 1914. 1 9 1 3 1: Patented. J an. 5, 1915.

6 SHEETS-SHEET 3.

WITNESSES: 4 INVENTOR.

W BY g 4 E 19, C, SW ATTORNEY.

P. L. O. W'ADSWORTH.

MACHINE FOR MAKING WIRE GARMENT STAYS.

APPLICATION FILED OUT. 28. 1912. RENEWED 00w. 21, 914.

Lm8,82. Patented Jan.5,1915.

6 SHEETS-SHEET 4.

F. L. O. WADSWORTH.

MACHINE FOR MAKING WIRE GARMENT STAYS. APPLICATION FILED 001.212.1912, RENEWED 001 .21, 1914.

1L ,1 QSfiQflo 11161118112111. 5, 1915.

6 SHEETSSHEET 5.

m 1 27 LL wrrmEss w 1 I INVEMTOR %/%%4M JMWW lll rnANK L. o. wAnswonrH, or snwronnnr, PENNSYLVANIA, AssreNon, BY MESNE AssreNnnNrs, 'ro THE srrnnnnn ooMrANY, or nnAnvrLnn, PENNSYLVANIA.

A. CORPORATION OF PENNSYLVANIA.

MACHINE iron MAKING Winn eARMnNr-s'rArs.

Specification of Letters Patent.

Patented J an. 5, T915...

Application filed. Uctober 2 8, 1912; Serial No. 728.277. Renewed October 21,1914. Serial No. 867,893.

To all whom it may concern:

Be it known that I, FRANK WORTH, a resident of Sewickle in the county of Allegheny and State Pennsyl- Vania, have invented a new and useful Improvement in Machines for- Makin-g Wire Garment-Stays, of which the following is a specification.

This invention relates to wire bending machines, and more particularly to a machine for bending wire back and forth into successive oppositely disposed loops to form corset stays, such for instance as shown in Patent No. 507,875, granted October 31, 151893 to Marcus M. Beeman,

The invention in some particulars comprises certain improvements upon prior machines for making such stays, such for instance as illustrated and described in' Patcut No. 1,009,823, granted November 28,

1911 to Marcus'M. Beeman, and that illustrated, described and claimed in Letters Patentgranted to Marcus M. Beeman and John F. Kitchen, October 29, 1912, No. 1,042,756.

. The objects of the invention are; first, to make the machine adjustable while it is running in order to eliminate edg'ewise curvature in the fabricated stay; second, to obtain a more effective stroke and thrust of the bending fingersby means of an imv proved arrangement'ofmechanism for oscillating the bending fingers; and third, to simplify and improve certain other features 3 of construction and operation as will hereinafter appear. s

Another object ofthe invention is to provide machines of this same general. character with means for imparting a twist 01 torsional set to the wire in order to form a i stay possessing greater resiliency and greater ability to resist a permanent s'et or distortion, and which also is stiffer in one flatwise direction than in the other, thereby a5 enabling the stay to be made of lighter wire without being rendered unduly flexible.

The invention comprises the construction and arrangement of parts hereinafter described'and claimed,

In the accompanying drawings, Figure '1 is a side elevation of the improved machine;

Fig. '2 is in part a plan viewand in part-a horizontal sectieni e'a the line 2 2, 11';

Figa t an e e ve tical secti n 01 t e L. O. WAnsline 33, Figs. 1 and 4; Fig. 1 is a longi tud'inal vertical section on the line 44, Fig. 3; Fig. 5 is a longitudinal section on the line 55, Fig. 4.; Fig. 6 is a cross section on the line 6-6, Fig. 5; Figs. 7 and 8 are diagrammatic views; and Figs. 9 and v1( are respectively side elevation and plan views of a modifiedform of machine, certain parts being omitted.

'The specific machine illustrated .is provided with a suitable base 1 upon which are erected the necessary frames or standards carrying the operative parts of the machine. The machine will be provided with a suitable flattening device for straightening the fabricated stay and with reeling mechanism therefor,' the same as in the patents above identified, but as neither of these is involved in the improvements employed by the present invention they are not illustrated. The machine may also be equipped with a suitable deviceM for cleaning the wire and with a tension device N of any preferred type. As shown, there is erected upon the base asuitable frame 2 on which all of the operative parts of the machine are mounted. This frame, preferably, is a cas'tingcomprising a pair of side plates or walls 3 parallel to each other, a rear wall 4 uniting said side walls, a front plate 4*,

and a bottom 5 by means of which said frame is secured to the base 1. The side wallsare-provided with suitable bearings 6 for the main shaft 7, which extends at both ends beyond said side walls, at one end be- .ing'provided with the fast and loose pulleys 8 and 9 by means of which the machine is driven, and on its opposite end being provided with the hand wheel 10 for turning said shaft by hand, and inside of said hand wheel with a gear 11 which meshes with a gear of similar size 12 on a counter shaft 13 mounted in suitable bearings 14 in the side walls of the frame 2. The counter shaft 13 has secured thereto a miter gear 15, which meshes with a similar gear 16 on a vertical shaft 17 1nou'nted in suitable bearings 18 on the rear wall 4: of the frame. Shaft 17 at its upper end is provided with gear 20 meshing with a similar gear 21 on another verticalv shaft 22 also mounted in 'siiitablefbearings 23 on the rear wall 4 of the frame. The. shafts'17 and 22 are symmetrically arranged With reference to the central longitudinal plane of the machine, one on each side. thereof, and both shafts are rotated at the same speed but in opposite directions. Eachpf said shafts is provided at its upper, end with a crank 24 carrying a wrist pin 25 connected by link 26 with a wrist pin 27 on one .arm of a bent lever 28, fulcrumed on the'pin or ,shaft 29 and having its other arm provided with wrist pin 30 on which works the connecting rod 31 for operatin the oscillating bending finger hereinafter escribed. The fulcrum 29 of each of the levers 28 ,is mounted in a suitable bearing member 32 longitudinally adjustable on the frame 2, such as by being provided with slots 33 through which ass the clamping bolts 34. Preferably posltive means are provided for longitudinally adjusting said bearin members 32, such as screws 35 rotatable 1n lugs 36 on the frame and having a threaded engagement, as at 37,

with the bearing member 32 and provided with a suitable wheel or head 38 for turning pins around which the wire is bent, and a pair of oppositely located oscillating bending fingers of the same general design as in the patents above referred to, but differing in detail. The anvil pins 40 and 40 are arranged in pairs, each pairbeing secured to a. suitable pin block 41 secured to the upper end of a vertically reciprocating and oscillatory carrier, said carriers being marked 42 and 42" respectively. The front plate 4 is'secured directly to the side walls 3 of the frame by bolts 121, and carries on its inner face the fixed members of split bearings 122, the other removable members thereof being secured. to the plate by bolts 123. In the bearings 122, which are located just above the main shaft 7, are journaled the trunnions 43 of oppositely arranged rocker.

guides 44 which are grooved on their facing sides and in which the pin block carriers .42 and 42" are respectively mounted so as to slide vertically therein, as clearly illustrated in Figs. 3 and 4, Wearing strips 46 are interposed between the edges of the pin block carriers and the grooves in guides 44. Each pin block carrier at its lower end is provided with roller 47, which rollers engage respectively in

cam grooves

48, 48 cut in

members

49 and 49 secured to the main shaft 7. -These cams are not only oppositely relative rigid reciprocatory movements to the pin block carriers allowing for a very considerable pause in movement both in the elevated and the depressed positions of said pin block carriers, for a purpose which will hereinafter appear.

The cofiperating bending members comprise a pair of

oscillatory bending fingers

51 and 51, each secured to a suitable holder 52 mounted to oscillate on a vertical stud or trunnion 53 and provided with an arm 54 to which the connecting rod 31 is pivotally connected at 55. Each trunnion 53 is mounted in a bearing member 56, secured to the main frame by means of bolts 58 and having a rounded boss or projection 57 engaging the frame and on which the bearin member rocks. A set screw 59 is threade through the swinging bending frame 56 and impinges against the main frameand serves as a means for adjusting the center of oscillation 53 of the bending member around pivot 57 toward and from the central longitudinal planeof the machine, as will be readily apparent. The means for longitudinally ad usting the bearing members 32, heretofore described, serves to vary the extent to which the bending fingers oscillate or move inwardly; and this means when used in conjunction with the lateral adj ustment for the bearing

members

56, 56 affords an accurate and convenient means for securing uniformity of throw between the two bending fingers thereby preventing the stay which is being fabricated-from acquiring any edgewise curvature or bend.

Each bending

finger

51, 51 is made in the form of a plate adjustably clamped to the

holders

52, 52, by means of the small bolts 60, passing through slots 60 in the plates, and these plates can be adjusted in height with reference to the other parts by placing liners under them. These fingers are provided in'their ends with grooves 65 for catching the unformed portion of the wire and bending the same around the

pins

40 and 40. The unformed portion of the wire is indicated at 67 and a portion of the fabricated stay at 68, the latter being formed between the pin blocks and a superimposed adjustable presser foot or plate 69, similar to that used in the Beeman and Beeman and Kitchen machines, above identified.

The operation of this part of the machine in its general characteristics is similar to that of theBeeman and Kitchen machine referred to above. The differences consist. principally in a difierent mechanism for actuating the bending fingers, whereby the throw of the latter can be adjusted without stopping the machine, as previously explained; in a different mode of producing the oscillating movement of the said fingel-s whereby the necessary range oi move ment or arcof oscillation is greatly reduced and along pause secured at the end of the outward swing; and in a different shape of cam for actuating the pin block carriers whereby the latter are held longer in their elevated positions for the purpose of giving time for certain wire twisting operations hereinafter to be described. The change in the mechanism for reciprocating the pin block carriers is largely merely a change in the design of the cams, but the mechanism for oscillating the bending fingers is of an entirely different type, and produces a decidedly different character of oscillatory movement particularly designed and adapted to, secure the necessary periods of comparative rest for the actuation of the wire twisting mechanism, before the bending finger moves inwardly to catch the wire.

The wire twisting mechanism comprises a suitable gripping member or clutch formed of two or more jaws between which the wire 67 passes and arranged at the proper time to be brought together to grip the wire and then rotate it. The specific means for effecting this, comprises a suitable jaw holder 72 in which the jaws 70 are mounted and provided with cooperating tapered faces 71 so that when the jaws are moved endwise into the holder, they are caused to ap roach each other and clamp the wire, an when retracted they separate and release the wire. The jaws are pushed into the holder by means of a pair of'levers 73, oppositely arranged and each mounted upon a fulcrum 74 on holder 72 and having a cam face 75 engaging the rear end of a jaw 70. Connected to the free end of each lever is a link 7 6, said links being pivotally connected at 76" to a sliding member 77,.

which is provided with an orifice through which the wire passes and the outer end of which is provided with a grooved collar 78 which is engaged by the forked end 79 of a bell-crank lever 80,'pivoted at 81 and having its opposite arm connected by a collar 82 to a vertically reciprocating sleeve 83 carried on ashaft 84. The sleeve 83 is connected by a rod or bar 83 to one end of a lever 85 fulcrumed to the frame at 86 and carrying intermediate its ends a roller 87 which is engaged by a cam 88 on the main shaft between the two cams 4:9 and 4:99. The depression of the lever 85 actuates supports.

bell-crank lever to push inwardly on the member 77 and straighten out the toggle links 76, thereby spreading the levers. 73 and causing the cam portions 75 to push the jaws 70 into the jaw holder'72 and grip the wire. opposite direction permits the member 77 to move outwardly to flex the toggle members 76 and draw the cam levers 73 toward each other.. These levers are positively connected to the jaws by means of the hooked members 90, so that the jaws are positively retracted tor, release the grip on the wire; A spring 91'is preferably em-' ployed to mov e the lever in-the direction opposite to that-in which it is moved by the cam 88. The cam 88 is so arranged that the jaws 70 grip the wire twice for each complete rotation of the main'shaft 7, so that the wire is gripped once for each oscillation of each of the bending fingers.

The jaw holder 72 is mounted in a suitable frame 93 having a movement of oscillation about the axis of the shaft 84, so thatlthe gripping member may swing back and forth The movement of the lever 85 in the to accommodate itself to the varying angle which the wire assumes when being bent back andforth by the oppositely moving bending fingers. The amount of lateral movement of frame 93 to-on'e side or the other is. limited by adjustable stops 120 secured to fixed portions of the main frame and which are contacted by frame93; In order to twist the wire when gripped, first in one direction and then in the other, the

following mechanism is provided: The jaw holder 72- is rotatably mounted in the frame 93 and is provided with a miter gear 96 which meshes with a similar gear 97 mount-v edon the lower end.o'f a short stud 98 in to a pinion 99 which is engaged by a segmental gear 100 on the inner face of an annular member 101, which is rotatable on the stud 94,axially in line with the shaft 84. The annular member 101 and the segmental gear 100 secured thereto are given a rotary oscillatory movement, first in one direction and then in the other by the following means: 102 represents each of a pair of arms pivoted on the stud 94 and provided arm at is outer end carries a pawl 110 cc- 105. the frame 93. The miter gear 97 is secured operating with ratchet teeth 111 on the outer face of annular member 101. Each of the pawls 110 is provided with a projection 112 adapted to contact with a stop pm 113, adjustable around shaft 94 as a center, in a slotted arm on the frame of the machine. -The operation of this part of the machine is as follows: After each bending finger has advanced and. formed a crossing 1o portion, it is retracted to the position shown at'the right of Fig. .2 and the pin block under the last formed eye then rises and clamps the wire between it and the presser foot 68. Coincidently with this upward movement ofthe in block the cam 88 engages with the rol er 87 and pushes the jaws 70 into the jaw holder 72 so that they grip the wire. As the bending finger carrier 52 continues to oscillate backwardl its arm 54 engages the nuts 107 on the en of the connecting rod 105, thereby imparting an oscillatory movement to the arm 102 and causing the pawl 110 to. engage with the ratchet teeth 111 to rotate the annular member 101, and this in turn imparts a rotary movement to the gripper jaws 70, thereby imparting a twist in one direction to that portion of the wire between the pin around which it is looped and the end of the grippingjaws 70.

-The amount of such twist can be varied by adjusting the belt 104 in the slot 103. During this backward movement of one of the bending finger carriers and the resultant forward movement of one of the arms 102, the other jbending finger carrier and arm are standing practically at rest with the opposite pawl 110 in such position that its rojection 112 is in contact with pin 113, an the pawl is out of engagement with the ratchet teeth. Near the end of the backward movement of the bending finger the pawl on the forwardly moving arm 102 engages with its pin 113 and is thereby lifted out ofengagement'with the teeth 111 and the cam 88 thenreleases the end of the lever 85 and allows the latter to be moved by the spring 91, thereby retracting'the gripping jaws 7 and releasing the wire. The pin block next to the backwardly moving bending finger then drops, and the opposite bending finger 51 and its carrier simultaneously swing inwardl to bend the just twisted portion of the wire into the next loop. As this bend-v ing finger swings inwardly it at first does 55 not move the opposite pawl arm 102, but as soon as its arm 54' contacts with the nuts 108, the opposite pawl arm is swung backwardly, the pawl moving idly over the ratchet teeth, this bringing it to such position that when said bending finger 51 is retracted the annular member 101 is rotated in the opposite direction, thereby rotatingv the twisting jaws in the reverse direction to that in which they were before rotated 65 and twisting the portion of the wire beand eye tween the twisting jaws and the last pin in a direction opposite to that in which the previous portion was twisted. The several parts are so timed, that the gripping 'aws are forced intothe holder 72 before the latter 7 begins to rotate, and after the ap ropriate pin block carrier has been elevated to grip the formedrcrossing of the wire.

- Fig. 7 illustrates diagrammatically on a scale correspondin to that of Fig. 1, the relations to each ot er, during one complete cycle of ste s, of the mechanism for operating one of t e bending fingers and the twisting device. In that new A re resents graphically the axis of the vertical s aft 22; B represents the axis of reciprocation of the bent lever 28; C is the axis of the trunnion 53, around which the bending finger swings or oscillates; and D is the axis oi shaft 94, around which the annular member 101 oscillates to impart a twist to the wire. The positions of the various parts, during the cycle of movement, are numbered in order from 0 to 16, 0 and 16 being the starting and end positions. In this cycle the crank pin 25 makes one complete revolution 0 nthe axis A in the direction of the arrow w. During the same cycle of movement, the wrist pin 27 on the short arm of the lever 28 oscillates through the arc a,b,' b-a, and the wrist pin 30 on the long arm of the lever 28 oscillates through a corresponding arc c-d, and then -back again through the same are d-c. The corresponding oscillatory movement of the arm, carrying the bending finger on the axis C is laid out on the projected sector e-f, and as there shown the initial movement of the parts from the position 0 to position 3 moves the said arm and finger slightly outwardly away from the central plane of 105 the machine andthe loop forming pins. The continued movement of the parts from the position 3 to position 8 then carries the bending finger inwardly to engage the wire and bend the same around the loo forming pin. 0 Thismotion begins slowly an increases rapidly aild is followed by a quick retreat of the bending finger away from the loop forming pin to about the position 12, where the outward movement becomes gradually slower 5 and slower until the initial positions of the parts is reached at 16. Fig. 7 also illustrates the movement of the arm 102 and pawl which swings or oscillates the annular mem her 101 to impart a twist or torsional set to the unformed portion of the wire. Referring again to that figure, as the arm 54 swings from position 0 to about position 6, the collar 106 slides on the rod 105 with a lost motion eiiect. and there is no motion of arm 102. This takes place during the first portion of inward swing of the bending finger. The collar 106 then contacts with nuts 108, at "about position 6, and a further swing of arm 54 carries the pawl 110 rearwardly over niaaeat the ratchet teeth until theparts reach position 8,'when the bending finger is at its inner limit of movement.

In the backward or' reverse movement of the parts from theposition 8 to a position between 9 and 19, the 'collar slides on the rod 105 without movin the arm 102 and during this time the hen 'ngfinger is withdrawn .from the

wire and'the cam

49 or 49* raises 10 the proper pin block carrier and the loop forming-pins clamping the last formed loop in place under the presser, foot 69. At the same time cam 88 engages roller 7 'i' and the jaws 70 areoperated to grip the wire. Fur- 5 ther, backward movement of the arm 54: to

about position 13 then swings arm 102 forward, during which movement the jaws 70 are rotated in the direction to impart the proper twist to the wire. The jaws are 1-0-- tated twice during each cycle of movement, first in one direction by the backward swing of one bending finger arm and then in the other by the backward swing of the other bending arm. It will be observed also that gathis rotation always takes place while one finger is retreating from the wire, and is fully completed just as the other bending finger begins to move inwardly to bend the wire around the next pin, the length of the clamping cam arcs 88 being such that the clamp jaws are released just before the advanclng finger engages with the twisted section of wire between said jaws and the previously formed and clamped loop.

I Theadvantag'e of this new type of oscil:

latory or reciprocatory drive mechanism is best shown by the velocity ratio diagramof Fig. 8. In this diagram the line curve marked y indicates, by the ordinate of to the curve, the movement of the bending finger from its extreme position of retraction 'to the various positions which it occupies in the forward bending movement by which the eyes or loops of one edge of the wire stay body'say the left hand edge-are formed. The ordinate of the line curve g corree spondingly indicates the position occupied by the end of the opposite bending finger at the same intervals of time. Examination of the diagram readily shows that practically the entire oscillatory movement ofeach bending finger isaccomplished in about onehalf of a complete revolution of the main driving shaft of the machine, and that the bending finger remains at rest at on near its extreme position of retraction for nearly one-half of a complete revolution. lfn consequence of this the bending finger which has last formed its loops or eyes can be to completely swung back to its extreme position of retraction-and the twisting of the wire which is accomplished during this backward swing completely finishedbefore.

the opposing bending finger begins its forat ward movement. The long interval of rest at the position of extreme retraction also allows plenty of time for the movements of thepin blocks and for the clamping and unclamping of the wire gri ping chuck; and also, as previously stated: permits the use of a shorter total swing in the bending finger movements than is necessary when the said fingers are driven directly from a rotative crank element as in the form of stay bending machine earlier referred to in this m specification.

The twisting of successive portions of the wire in opposite directions is necessary in order that the twist in all of the crossings or transverse portions of the wire, viewing 30 the stay as a whole, shall run in the same direction, as otherwise the twist in adjacent crossings would neutralize each'other. The distance between the gripping jaws 70 and the pin around which the wire is looped must be substantially equal to the length of one of the crossing portions of the wire in order that the twist may be confined to the proper length of wire. It is on account of the necessity of the close proximity'of the twisting jaws to the pin blocks that the bending fingers can have only limited oscillatory movement and because of the time intervals necessary to rotate the twisting jaws,

it is necessary that the bending fingers have a Very material pause at the outer limit of their movement. The twisting mechanism could, of course, be omitted, in which case the machine would operate to produce a stay having the same general characteristics 109 .as the stay produced by the Beeman and ing jaws and jaw holder, to impart a torsional set or initial twist'alternately in opposite directions to successive portions of the wire. This mechanism is more nearly like that described and shown in my prior companion application for method of making garment stays, filed July 1,1912, Serial No. 706,956. In this construction the arrangement of cams, gears, cranks, and lever connections for operating the bending fingers, the pin blocks and clamp jaws is the same as in the machine shown in Figs. 1 to 6, and therefore requires no further description. The mechanism for rotating the twisting jaws is as follows: Upon shaft 13, and between the gear 12 and the side plate 3 of the main frame, is mounted a cam 125, into 13a the groove or track 126 of which projects a pin or roller 127 on a lever 128 pivotally connected at one end, as. at 129, to a fixed portion of the frame. At its otherend lever 128 is connected by a link 130 to a pin or bolt 131 adjustable inthe slot 132 of an arm 133 which is rigidly secured to a shaft 134 journaled in a bracket on the front plate 4. Shaft 13-1, at its other end, is provided with a bevel gear segment 135 meshing with a bevel gear 136 loosely rotatable on a shaft 137 which supports the swin g frame. 93 carrying the twisting jag vs an chuck. Gear 136 is either fixed to 'or integral with a spur gear 138 which meshes with and drives a similar gear 139 on the lower end of a short stub shaft -journaled in frame 93 and carrying a beve gear 140 at its other end, said bevel gear 140 meshing with and driving the miter gear 96 -of-jaw holder 72. The cam track or groove 126 in the cam 125 is formed with oppositely inclined" portions 141, which are arranged opposite to each other and at their ends are connectedby the inner and outer circular portions of the track, marked respectively 142 and 143. Whenever the inclined portions. 141.0fthe cam track engage the roller 127 the lever 128 is swung in one direction or the other. Lever 128, through the link.130, swings or oscillates shaft 131 and bevel gear segment 135, which in turn, through the gears 136,

. 138, 139, 140 and 96, rotates the gripping jaws and jaw holder '72 alternately in opposite directions. The amplitude of angular rotation of the jaw holder and jaws may be varied by adjusting the pin or bolt 131 in the slot 132, which is radially disposed with reference to the axis of shaft 134. This causesvarying movements of oscillation to be 'ven to shaft 134 with the same amount 0 swing or oscillation of lever 128 on its pivot 129 1 The operation of this machine is the same as that shown in Figs. 1 to 6, the chuck rotating mechanism being shown in a posie tion which corresponds to the position of parts illustrated in these figures. As the bending finger on the right hand side of the machine is retracted the pin block on the left hand side of the machine is raised to engage with the last formed loop or eye; the wire is simultaneously grippedor clamped by the jaws 72; and the latter are then rotated through the desired angle by the action of the cam 125. The latter is secured on the shaft 13 in such position that one inclined portion 141 engages with the roller pin 127 and moves it and the lever 128 to the left while the retreating bending finger is completing its backward movement, thereby imparting the desired twist to the wire just before'the opposite bending finger comes in from the left handside and enthe next.- crossing and e e. The clamp jaws are then released and old stationary: (b the engagement of the roller pin 127, wit the outer circular portion 143 of the cam track) until the next-loop or eye is formed, after which thecorresponding pin block is raised. .The clamp jaws are'now closed and rotated in the opposite direction by the engagement of the roller pm 127 with the v other inclined portion 141 of the cam 125.

This form of machine may also be provided with a suitable tension device for holding the vwire taut as it enters the machine, the

drawin illustrating at 150 the same form of tension; device shown .in the Patent No. 1,009,823 to Beeman heretofore referred to.

Various modifications obviously can be made in: the construction and arrangement of parts without departing from thespirit of the invention. It is obvious, for exam ple, that the machine above illustrated and describedcouldbe-used in forming twisted plural wire stays-such as form the ,subject matter of my a plication, Serial No. 710,007, filed July 17, 1 12,by. simply, replacing the split chuck by asolid die head having separate 'erforations for each ofthe wires of because the wires are twisted and braided together 2% the rotation of the die head itse f, a s cient length of the twisted or braided section being formed at each rotative movement of the said die part to form the next crossing and loop of the said body. A similar arrangement to that last described could also be used in forming rectangular twisted wire stays such as areillustrated'and described in my coending application Serial No. 710,006, fi ed July 17, 1912. In this case the rotating die is provided with an opening corresponding to the cross-section of the wire to be used, and successive portions ofthis wire are twisted first in one direction and then in the other by corresponding rotative movements of the nately, and means operable while the ma chine is inmotion for varying ,thethrow of said benders.

2. In a wire bending machine, the combi- .nation of alternately movable anvil .mem-

bers, oscillating benders .arranged to bend the wire, against-said anvil. members,. and

mechanismufoi' scillating said benders a1- ternately, said mechanism including adjustable means adapted to be operatedwhile anaaeaa the machine is motion and: arran ed to vary thethrow of elther of said ben ers. 3. Ina wire bendingmachine, the combination of alternately movable anvil members, oscillating benders arranged tobend the wire against said anvil members, and mechanism for oscillating said benders alternately,-said mechanism including means for adjusting the throw of one of said bend ers independently of the other while the machine is in motion. 1

4. In a wire bending machine enibod alternately movable anvil members an pscillating benders arranged to bend the wire against said anvil members, means for oscillating one of said benders, said oscillatmg means including a lever, andnieans for.

shifting the fulcrum of said lever, whereby the throw of said bender is varied.

5. In a wire bending machine embodying alternately movable anvil members and os-v cillatory benders cotiperating therewith, means for oscillating one of said benders comprising a rotating crank, a pivoted lever, operating connections from one end of said lever to said crank, and oper'atingconnections from the other end of said lever to said bender.

-6. In a wire bending machine embodying alternately movable anvil members and oscillatory benders coiiperating therewith,

means for oscillating one of saidbenders comprising a rotary shaft carrying a crank, a bent lever fulcrumed at its angle, an operating rod connecting one end of said lever to said crank, and an operating rod connecting the opposite end of said lever with said oscillatory bender.

7 In a wire bending machine embodyingalternately movable anvil members and oscillatory benders cooperating therewith,

mgachanism for oscillating one ofsaid benders', means operable when the machine 1s in motion for varying the motion of said bender, and means for adjusting the axis around which said bender swings toward and from the central line of the machine.

8. In a wire bending machine embodying alternately movable anvil members and oscillatory benders cooperating therewith, mechanism for actuating one of said benders including an oscillating lever, means for shifting the fulcrum of said lever to vary the position of said bender, and means for also shifting the axis around which said bender swings.

9. In a wire bending machine embodying alternately movable anvil members and oscillatory benders cor'iperatin therewith, bearing members on which sai benders are mounted, means for adjusting said bearing members toward and from the central line of the machine, and means for oscllla-ting one of said benders including an oscillatory lever, abearing member on which the same is fulcrumed, and means for adjusting said bearing member longitudinally of themachine. I

10. In a wire bending machine embodying bending devices, the combination of a wire twisting devicelocated in proximity to said bending devices, and means for causing the twisting device to periodically engage the I unformed portion 0 the wire and twist the same twisting device located in proximity to said bending devices, and means for causing said twisting device to periodically engage the .75 11. In a wire bending machine embodying bending devices, the: combination of a wire unformed portion of the wire and twist successive portions thereof alternately in opposite directions.

12. In a wire bending machine embodying bending devices, a wire twisting device located in proximity to said bending devices .and through which the wire is fed, and

means for causing said twisting device to periodically engage the unformed portion of thewire as it is fed to 'said bending devices and twist the same.

13. In a wire bending machine embody "bending devices, means for causing said twisting device to grip the wire, and means for rotating said twisting device as it grips the wire to impart a twist or torsional set thereto.

15. In a wi re bending'machine embodying bending devices, the combination of a wire twisting device located in proximity to said bending devices, means for causlng said twisting device to periodically grip the unformed portion of the wire, and means for rotating said twisting device'alternately inopposite directions during successive grippings of the wire, said twisting device being arranged to release the wire between successive rotations thereof.

16. In a wire bending machine embodying bending devices, the combination of a wire twisting device located in proximity to said bending devices,- said wire. twisting device comprising a clutch, meansfor periodically closing said clutch to grip the wire, and means for rotating said clutch when closed.

17 In a wire bending machine embodying bending devices, the combination of a wire clutch-in opposite directions durin cessive grippings of thewire, to there y .im-

twisting'dev-ice located in prom'mity to said Y bending devices," said twisting device comrisingv a clutch through which-the wire is ed to the bendin devices, .means for periodically closing said clutch to grip the wire, and means for alternately rotating said .suc-

-' part a twist or torsional set thereto.

18."- In a wire bending. machine-embodying bending devices, the combination of a wire twisting device located in proximity to said bonding devices, said wire twistin device a com risin a clutch, mean s for periodically 16' clos ng-said clutch to gripjhe wire, and

r means for rotating said clutch when closed, said meansmcluding a gear, and means for rotating'said gear intermittently and in opposite directions.

' 19. In a wire bendingmachine embodying i? bending devices, the combination of a wire ing device located in proximity to said bending devices, means for causing said twisting device to periodically grip the wire, and means for rotating said twisting device comprisingan oscillatory member connected thereto and'carrying a ratchet, and a lever carrying a pawl for swinging said oscillatory member. 1

21. In a wire bending machine, the combination of bending devices, means for operating the same, 'a wire twisting device located in proximity to said bending devices, means'for causing said twisting device to periodically grip the wire, and means controlled by said bending device operating means for rotating saidstwisting device in synchronism therewith.

In-a wire bending machine, the combination-mi bending devices, awire twisting device located in proximity to said bending devices, and means for causing said twisting device to alternately twist successive portions of the wire in opposite directions,

said means being connected to said bending devices and operating in synchronism therewith.

23. In a wire bendingmachine, the combination of alternately movable bendin devices, a wire twisting device locate in proximity" to said bending devices, and connections from said bending devices to said wire twisting device and arranged to alternately operate the same to im art a twist or torsional set in opposite irections to successive portions of the wire.

24. In a wire bending machine, the combination of bending devices, a wire twisting device in proximity to said bendin devices, means for causing said twisting ievice to periodically "grip the wire, and means for rotating said twisting device alternately in opposite directions, said means including a gear segment connected. thereto and provided -with oppositely disposed ratchet teeth, pawls engagin said ratchet teeth a member-carrying sai pawls, and means ior oscillating said member.

25. In a wire bending machine, the combination of bending'devices, a wire twisting device in proximity to said bending devices,

means for causing said twisting device to periodically grip the wire, means for rotatingsaid twisting device alternately in opposite directions, said means including a gear se ment connected thereto and provided with oppositelydisposed ratchet teeth, pawls engaging said ratchet teeth, a member carrying said pawls, and means for oscillating said member, said means being connected to said bending devices and arranged tobe alternately actuated in opposite directions thereby. Y

26. In a wire bending machine,-the combination of alternately movable bendin devices, a wire twisting device locate in proximity to said bending devices, and means connected to one of said bending devices. for rotating said twisting. device in one direction, and means connected to the other bending device for rotating said twistingd'evice in the opposite direction, to thereby. impart a twist or torsional set in opposite directions to successive portions of the wire.

27. In a wire bending machine, the combination of oppositely disposed oscillatory bending devices, mechanism for alternately actuating the same, and a clutch member through which the wire is led to said bending devices, said clutch member being arranged to oscillate on an axis normal to the plane of oscillation of said bending devices, means for oscillating said clutch device, and means for causing the same to intermittently rip successive portions of the wire.

28.. n a wire bending machine, the combination of oppositely arranged oscillatory bending devices and means for alternately actuating the same, a wire twisting device mounted to oscillate on an axis normal to the plane of oscillation of the bending de vices, and means for causing the wire twist ing device to periodically grip the wire and twist the same.

29. In a wire bending machine, the combination of alternately movable anvil memhers, oscillatory benders coiiperating therewith, a shaft for moving said anvil members and oscillating said benders, a wire twisting device located in proximity to the bending devices, and means controlled by said shaft for causing said twisting device to twist successive portions of the wire as it is fed to said bending devices.

30. In a wire bending machine, the combination of alternately movable anvil members, oscillatory benders cotiperating therewith, a shaft arranged to move said anvil members and oscillate said benders, a wire twisting device located in proximity to said bending devices, means controlled by said shaft for causing the twisting device to periodically grip successive portions of the wire, and means for rotating said twisting device to impart a twist or torsional set to successive portions of the wire as it is fed to said bending devices 31. In a wire bending machine, the combination of alternately movable anvil members, oscillatory benders cooperating therewith, a shaft arranged to move said anvil members and oscillate said benders, a wire twisting device located in proximity to said bending devices, means controlled by said shaft for causing the twisting device to periodically grip successive portions of the wire, and means for rotating said twisting device alternately in opposite directions during successive grippings of the wire to impart a twist or torsional set in opposite directions to successive portions thereof.

32. In a wire bending machine, the combination of alternately movable anvil members, oscillatory benders cooperating therewith, a shaft for moving said anvil members and oscillating said bender-s, a wire twisting device located in proximity to said bending device located in proximity to said bending devices, means controlled by said shaft for causing said twisting device to periodically grip successive portions of the wire, means connected to one of said benders for rotating said twisting device in one direction,

.and means connected to the other bending device for rotating said twisting device in the opposite direction, whereby a twist or torsional set in opposite directions is imparted to successive portions of the wire.

In testimony whereof, I have hereunto set my hand.

FRANK L. 0. WADSWORTH.

Witnesses:-

ELBER'r L. ll-lrnn, WILLIAM B. WHARTON.