US1592592A - Wire-winding machine - Google Patents

Description

July 13 192 C. E. ANDERSON ET AL WIRE WINDING MACHINE Filed August 27. 1920 l1 Sheets-Sheet 1 July 13,1926. Y 1,592,592

C. E. ANDERSON ET AL WTRE WI NDING MACHINE Filed August 27. 1920 l1 Sheets-Sheet 2 hilf/68001, Gus mwrnson `July 13 192e. 1,592,592Y

C. E, ANDERSON ET AL WIRE N'INDING MACHINE Filed August 27. 1920 11 Sheets-Sheet 3 July 13,1926. 1,592,592

, C. E. ANDERSON ET AL WIRE wINDING MACHINE Fiied August 27. 1920 11 Sheets-Sheet 4 w mfom Gzw a?. mew,

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July 13 1926. 1,592,592

c. lE. ANDERSON ET A1.

WIRE WINDING MACHINE F11 August 27. 1920 11 Sheets-sheet s July 13 1925.

C. E. ANDERSON ET AL WIRE WINDING MACHINE Filed August 27. 1920 11 Sheef's-Sheet 6 July 13 1926. 1,592,592

. C. E. ANDERSON ET AL WIRE WINDING MACHINE Filed August 27 1920 11 Sheets-Sheet 7 'July 13 192e. 1,592,592

c. E. ANDERSON ET A1.

WIRE w'wmING MACHIE Filed August 21. 1920 l1l Sheets-Sheet 8 `July 13 1926.

1,592,592 C. E. ANDERSON ET AL WIRE WI NDING MAHINE Filed August 2"?. '1920 11 Sheets-Sheet 9 July 13,1926. 1,592,592

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wm: wINDING MACHINE Filed August 27. 1920 11 shets-sheet 1o /52 fad 730 7gg July 13 1926.

`c. E. ANDl-:RsoN-y ET An.

WIRE WINDING MACHINE Filed August 27. 1920 l1 Sheets-Sheet 11 Patented July 13, 1926.

as. l 1,592,592

UNITED STATES lTATl'-.NI OFFICE.

CARL E. ANDERSON AND GUST A. FREEVOL, O'F CHICAGO, ILLINOIS.

WIR'E-VINDING MACHINE.

Application led August 2'?, 1920. Serial No. 406,391.

This invention relates to improvements in `machines v-tor `termin,T metallic tips on electric wires. and the like; and its purpose is to provide apparatus 'for automatically ettectingl the operations of stripping the ends ofl the wire ot' its insulation, and then effect-ing' a spiral winding-oit wire thereon to forni a metallic 'tip at thepend ci the insulation.

The vprincipal object of vthe invention is to provide improved apparatus for effecting automatically and efficiently the operation .of winding a'metallic tip on an electric wire. A further yobject vis to provide apparatus which yis capable `of operation at relatively` Agreat speed for effecting a continuous series oit operationsfon electric wires, whereby the ends of the wires are provided with spirallv rwou-nd Vmetall-ic tips. A further object is to provide improved apparatus for stripping "the end of the wire .of its insulation. Still another feature is the provision of mechanism adapted to effect the operations of 'holding the insulated wire, winding a -1netallic ti-p of `fine hinding'w-ire thereon, releasing the insulated wire from the holding` fnieans, cutting Ithe fine binding wire after the vwinding;v operation lhas been completed` drawing out the free end of the binding;Y `wire iu order to eliminate all slack in the part of the wire which has heen wound. and returning all parts of the apparatus auto iniatical'lf/J to their initial positions 'for re- Awinding another insulated wire.V Other objects .relate to various i'features ot construction and arrangement, which will appear lmore Iitullv hereinafter.

VThe nature ot the invention will he understood -ilfroi'n the following' speciticaftion. taken in connection with the accompanying drawings; `in 'which `one embodiment is illus 'trated In the drawi-ngfsn Figure 1 shoe 's a top Iplan view of the apparatus 'embodying the present invention Fig. 9. shows a transverse Isectional view on the line 2 2 of 1; illustrating VJche stripping' apparatus in elevation;

Fig. f3 shows an enlarged sectional view. similar'to l? Q, illustrating the positions ci' the parts when they are in position ito `grip andstrip an insulated Iwire;

Fig. 4 shows -a vertical section on the line 4 4 of Fig. 3, looking in the direct-ion tot the arrows; Y

Fig'. 5 shows a vertical section on the line 5 5 ot Fig. 3, looking in the direction ct the arrows;

F G is -a Adetail view, -on the line 6 6 oi' lig. 3, showing lan end elevation `ci: the holders for the stripping' blndes;

lilo'. 'T shows a vertical section, taken on inc 7 of Fig. 8;

S is detail vertical section on the line 8 8 of Fig. 6, showing .the anethod oil mounting the stripping blades in :the hold-- VFig. 12 sho-ws :a transverse sectional view on the line 12-121o` Fig. 1,'looking in the direction orf the arrows; n

Fig. 13 shows a transverse sectional view on the `line 13 i3o1 Fig. 1,`-looking in the direction ont the arrows;

Fig. 14 shows a transverse sectional view on the'line I1% 14 oft Fig. f1. looking` in the direction ot the arrows;

Figi'. 1.5 shows a transverse sectional view on the line 1:5 15 oi Fin'. l, looking' in the direction oil. the arrows.;

Fig. 16 shows a transverse sectional view on the line 16--16 of Fig. l, lookingl in the direction ot the arrows;

Fig. 17 shows a perspective view of the parts which enter directhT into the holding' and windingsT operations illustrating the `position ot the end of thelne wire in he apparatus and .the relative positions of adjacent parts when they are in position to begin windingr operations and just before .the insulated `wire is placed in position to 'he wound;

lili-g. lf3 shows a .perspective view of the parts illustrated in 1T in the relative positions which they occ-um7 in a succeeding stage of the operation limniediatelv7 after the end oi1 the insulated wire has heen spirally found by the line wire;

Fic'. 19 shows a -pers}. iective view, similar :to those 'et 1'? and 1S, illustrating; the

samevparts and other associated parts of the mechanism in a. succeeding stage of the operation, where the insulated wire has been released from the holding device and the free end of the line wire which has been drawn out from the spool is about to be severed by the cutting blade;

Fig. Q0 shows a perspective view of the end ot an insulated wire before the stripping operation has been performed;

Fig. 21 shows a perspective view of the same insulated wire after the insulation has been stripped from the end thereof; and

Fig. 22 shows a similar perspective view ot' the end of the insulated wire after it has been spirally wound by the apparatus oi this invention to form ametallic tip.

The apparatus, as illustrated in the drawings, is mounted upon a base plate SO, which may preferably be supported upon a table or the like, to permitthe convenient operationof lthe mechanism. `A' casing 3l is secured to one end of the base plate by means et screws 32. This easing has aY shaft 33 journalled therein and adapted to be driven Ly a worm gear 34 Xed thereon. This worm gear is driven by a worm 35, which is mounted in a cylindrical extension 81 of the casing on a main driving shaft 87, journalled in bearings carried by the casing. A pulley 38 is fined on the projecting end of` the shaft 37, and this pulley is adapted to be driven by a belt connected to an electric motor or the lilze. All parts of the apparatus are driven from the shaft 37, either directly or through Ythe worm 85 and worm wheel 34.

The stripping mechanism is actuated directly by the shaft 8T, which projects from the casing 3l at the end opposite the pulley 3S. This part of the shalt has a transversely extending bloei; 40 rigidly secured thereon, and this bloclr is provided withnotches 4l at its opposite ends adapted to receive the arms 42, which are'pivoted thereon by means or' pins The longer ends of these arms which project away from the casing 3l are normally creed together by means of a pair of coil springs 44, which are connected to the arms by means of screws 45. The closing movement of the arms 4Q is limited by means or a pair of set screws 46, each ot which engages one of the arms and is held in acjusted position by a locl; nut 47. The inner extremities of these set screws are adapted to coart with the shaft 37, in order to limit the movement of the arms. The extremities orn the arms 42, beyond the springs 44, are rigidly connected to transversely extending holding plates 48, which are provided with vertically extending recesses forming grooves adapted to receive the cutting or stripping blades 50. These blades are held in positionon the holding plates 5l, which are secured to the members 4S, by means ot screws 52. The meeting 4insulation from the metallic wire.

ends of the holding plates and the clamping plates are provided with notches 48 and 5l", respectively, into which the cutting blades 50 project; and, when the insulated wire insertedin position to register with these notches, the cutting blades are adapted to rotate with the shaft 37, and thus sever the lfilhcn the shaft is rotating, the centrifugal force 'reated by its rotation operates normally to separate the holding members 48 against the tension or' the springs 44, so that the armsl 42 occupy the Ypositions illustrated in Fig. 2, and when the operator desires to strip the end of the insulated wire, it is necessary to et'ect the closing of the blades by means ol' a sliding collar 54, having an inclined cam tace 54a formed on the end thereof to coaet with the extremities of the arms opposite the cutting blades. The'sliding collar isV provided with transversely projecting pins 55., which are adapted to engage slots 56 vformed in the U-shaped arms of a lever 57. This lever is pivoted at 5S onv a supporting post 59 caried by the base platerltl, and it is actuated by a transversely extending lever rarm GO, which may be secured thereto or iormed integrally therewith. The doublearmed lever 57 is normally held 1n the position illustrated in Fig. 2 by means or the coil spring 6l, which is connected at its upper end to a screw (52 projecting from the lever 57 above its pivoted axis. At its lower end the coil spring is connected by a screw 63 to the base 59a of the post 59.

When the operator desiresto move the cutting blades into a position wherein they engage the insulated wire 65, as illustrated in Fig. 3, the lever arm is moved downwardly by means of a chain 66, which eX- tends through an aperture 67 in the base plate and is connected preferably to a pedal, which may be operated by the feet. This movement of the lever arm 6() moves the collar 54 outwardly on the shaft 37, and the inclined :tace 54a of the collar serves to move the arms 42 about ltheir pivots and thereby move the cutting blades together.

The electric wire 'is held in'position during the stripping operation by means of a pair of pivoted holding arms 68, of the form illustrated particularly in Fig. 4. These arms are pivotally mounted on screws 69, which are carried by an upwardly es tending plate or frame member 70 secured to the base 30 by means of screws 71. This supporting plate is provided with a vertical slot 72, through which the lever arm 60 is adapted to project, and the downward movement of this lever arm is limited by means of a threaded stop member 7 3, which engages apertures in the base plate 3() and in the lower flange 70L of the supporting plate, being held in adjusted position by means of lock nuts 74.

are brought into position. to engage the insulated wire by the action of the lever arm `60, which, whenit moves downwardly, en-

gages the cam faces 77 which are formed on the lower extremities ot the holding arms. The inward movement ot the upper ends of the holding arms, due to the downward movement of the lever 60, is limited by means of a pair of pins 78 which project outwardly from the plate and engage slots 79 formed in the holding arm 68. The insulated wire is adapted to be supported in a position wherein it will be engaged by the notches of the holding arms by means of a plate 80, which is secured to the supporting plate 70 by screws 81 and mounted in a position wherein its upper edge terminates slightly below the registering notches 75. The inward movement of the insulated wire 65 between the holding arms 68 is limited by means of a stop member 83, which threadedly engages the end of the shaft 37, as shown in Fig. 3. The stop vmember is held in adjusted position by means of a lock nut 84, and the end thereof is -hollowed out, or' recessed, as shown in 83a, so that the end oi' the electric wire is automatically centered in line with the axis of the shaft 87. By adjusting the position of the stop member it is possible to regulate the length of insulation which is stripped from the wire by the action of the rotating blades 50.

The shaft 37 operates continuously during the operation of the apparatus, and the arms 42, which carry the stripping blades, normally occupy the position .illustrated in Fig. 2. When the operator is about to strip the insulated wire of a portion of its insulation, the end Iof the wire is inserted between the holding blades 68 above the supporting plate 8O until the end ot the wire engages the recess 83aL in the stop member 83. The operator then presses downwardly on the pedal and causes the lever arm 60 to be lowered. The lowering oi' this lever arm brings the holding arms 68 into engagement with the wire 65, and shortly thereafter the cutting blades 50 are brought into engagement with the insulation by the action ot a collar 54, which slides longitudi.

nally on the shaft 37. The inward movement ot the cutting blades 50 is somewhat gradual, due to the gradual inclination of the inclined surface 54, so that the rotatingI blades 50 gradually sever the insulation from the wire .and it is pulled ott the wire when the operator holds the body portion oit the wire out between the holding arms 68. The cutting blades may be adjusted in any desired position between the plates 18 and 51, and lthe blades may further be adjusted to engage any size of wire or thickness of insulation by regulating the adjustscrews 16. After the end of the wire vhas been stripped oit its insu-lation, it is ready to be wound with line wire to form a metallic tip by means oit the mechanismy hereinafter described.

The shatt 83, which is `jeurnalled in bearngs carried by the casing 81, has a pinion secured to the projecting end thereof, and is pinion is adapted to drive a gear 86, atahly mounted upon an intermediate sna't 87, which extends longitudinally oiE the apparatus and is journallcd in bearings 8 carried by the base plate 30. A ratchet wheel is secured to the gear 86 by means 01, and a driving connection is to he torn'ied between the gear 86 c shiit 87 through a pawl 92, which s pivotcd t 98 on a driving arm 9d rigidly secured to the sha-tt 87. A. coil spring is connected to the pawl and the driving arm at the points 06 and 97, respectively, so that the pawl -is normally forced into engagement with the teeth oft the ratchet wheel, and when in this position the longitudinal shaft- 87 is driven by the gear 86 and the driving pinion 85.

rr collar 98 is secured to the end of the sha'tt 87, and a. coil spring 99 is mounted between this cellar and the'i'acc of the gear, in order to torce the gearand its ratchet wheel toward the iiicd driving arm 91. The cam 92 is provided on its under side with a curved notch or recess 92a, which is adapted to be engaged by a pin 100 projecting from an arresting arm or lever 101. rl`his lever .is pivotally mounted on the shat't 87, between the arm 04E: and the adjacent bearing 88, and it provided with a lower dependingarm 101, which is pivotally connected at 102 to a crank rod 108. This connecting rod is actuated by the cr: .ik arm 10ft, which is secured to a shaft 105 journal-lied in a' bearing bracket 106, carried by the hase plate hand lever 107 is secured to the end ot the sna'lit 105` opposite the crank arm, and this hand lever has a downwardly extending projection 107, as illustrated in Fig. 12, which is adapted to engage the `base 30 and limit the ,downward swinging ot the lever under the inliuence el a coiled spring 108, which is mounted on the shaft 105, with its extremities engaging the base plate ot vlever 107, in the manner illustrated in Fig. 1. This spring tends to cause the lever to occupy the normal position illustrated in Fig. 12, and this corresponds to the position of the arresting 'lever 101, illustrated in Fig. 2. The position occupied by the arresting lever,

An upwardly extending f or the liinit oi' movement `"thereof, is deterruined by an adjusting screw 110, which thrcaldedly engages a bracket 111, secured the teeth ot the ratchet wheel 90, the. pand automatically rides up over the pin and remains stationary, supported by this pin, While the gear and ratchetwheel continue to rotate. Then the operator Wishes to set the longitudinal shaft 87 in operation, the hand lever 107 is moved toward the right, as vievfedin Fig. 12, thereby causing the pin 1GO to ride out 'from beneath the tooth oi' the paivl D2, which then inoves into engage- Vnient with the teeth oi' the ratchet Wheel under the inliuenee of the spring 95. The operator then releases the hand lever, which returns to its nornial position runder the `inliuenee ot the spring 10S.

The principal parts ot the AWinding mechanisin are actuated through a cani 120, which is lined on the longitudinal shaft 87.` This cani is of the forni illustrated particularly in Fig. 141, being provided on its lateral side with an annular groove 121, of irregular curvature, Which is adapted to be engaged by a roller 122, mounted on a pin .123 carried by the intermediate lever`124. This interinediatelever is mounted adjacent an actuating lever 125, and both leversare pivoted, at 126, on a bracket 127 carried by the hase plate 30. YThe intermediate lever terininates in a transverse flange 124?, which 1s adapted to be engaged on` its oppositie sides by springs 12S seated on the ends of adjusting screns 129. rllheseV aidjusting'screws engage the transverse oars or flanges 130 which are formed on the actuating lever 125, and are held in adjusted position by means of loch nuts 131. The springs provide a resilient connection between the intermediate lever and the actuating lever, and the screws 129 serve as stops to limit the relative inoveine-nt or" the tivo levers. The actuating lever carries a rack bar 133 at its end, and this rack baris adapted to drive a pinion 134, fixed on a eountershatt 135. This countershaft is journalled in a bearing 136, formed in a. vertieall'frame 137, which is seeure'd to the base 30. A relatively large gear 13S is secured to the oountershait adj aeent the pinion 13st, and this gear is adapted to drive o pinion 1239, journalledon a stub shaft carried by the trarne 137. A gear 141 is mounted to rotate with the pinion 139, and this larger gear drives a small pinion 1112, which is fixed on the Winding spindle '1414. This Winding spindle is journalled in an elongated bearing 1415? which extends laten` ally troni the 'franje 137, and the end thereoil opposite the pinion 142 carries the fixed hub 146 of the Winding arin or linger 147, which extends longitudinally therefrom, terminating in a transversely bent portionj 148.

A guiding n'ieinber 149 is secured to the part 1&8, and both ot these inenibers are provided with alining curved notches 150, located in alinenient "with the axis ot the kwinding spindle and adapted to travel around the end oi' the insulated wire during the process oit Winding. The guiding nieniber 11i-5l has a curved hoolt 151 which extends outwardly troni the lower part thereoit, as viewed in Fig 17, 1S, and 19. The line binding vcire ino, by which the Vmetallic tip is 'formed on the insulated Wire, brought out through an aperture 1513, which is it ined in the guiding member 149 at the bottoni ot the recess 150. The Wire is led to the aperture 15G through the guiding nieniber 'troni the bach yoi the Winding linger 14.17, `here it passes through a guide 157 carried by the winding arm. The 'Wire is led to the guide through an aperture 15S which termed in the winding arin, as illustrated in Fig. 11, and the Wire is led to the aperture 158 through an arial opening 160 which kextends longitudinally through the Winding spindle 14e. Freni the outer endy otl the Winding spindle the Wire 155 eX- tends longitudinally, and the supply thereof is Wound on a spool 162, Whichis mounted on a shaft 163, carried by' a bracket 1G41 seoured toV and extending longitudinally troni the base plate 50. A detachable collar 1(31n is secured to the end oilz the sha't't 163, to p'ern'lit the spool ot Wire to be replaced by a nev.7 supply.

The rotation of the spool is Controlled by a flat spring 165, which eoacts with the drinn 166 formed on the end of the spool. This spring is carried by an arni 167, which is pivoted at 168 on the bracket 164., as shown at Fig. l0. An adjusting` screw 1GO threadedly engages the projecting end ot the arni 167 andV coaets with the bracket to pei-init regnlation'oi the pressure ot the spring on the druin ot the spool. The Wire is supported between t-he spool 162 and the spindle 144. by a guide ineinber 170, which is secured to the bracket 16e/1.

During each Winding operation of the spindle 144 and the Winding arin 147, the ivire 155, in the region between the Winding spindle and the guide 170, is pulled do\vu- Wardly by ineans ot an arin 171, which is provided With an aperture 172, through which the wire passes. This arm is carried Vby a lever 173, which is pivoted at 171 on a bracket 175 secured to the base 30. A transverse pin'176 projects 'from the lever 173 and coacts with a'cain 177 secured on the longitudinal allait S7. This pin main= mee-,59e

tamedv in Contact with the can'rby means of a coiledspring 178, which is connected to two screws 179 and 180 'carried by,v the braclct 11i-:Sand the 178, respectively. The cam 177 is of the ni illust ated particular-ly in Fig. 16, beingprovided with a. reces 177 ou one side thereof. li'hon the recess reaches the proper position, it permits the lever arm 178 to move. downwardly under the influence of the spring 1:78, thereby causing the arni 171 to press the wire downwardly and draw a new supply of wire from thespool 16,2. Thelever 178 is notched, as shown yat' 17 3, to permit it to clear the `hub 177b ofthe cani' when the lever is in its lower positini.Y After continued rotation of the cam, the lever is elevated to the position shown in Fig. 16, thereby creating a; slack in the wire 155which can be drawn np through the winding arm in the mannerv hereinafter described.

The insulated wire isv heldlandmanipulated during the processof windingby means of mechanism mounted onv a sliding plate or carrier 185. This carrier has depend ing ears or flanges 186, which are slidably mounted on'a` pair of guide rods 187. These guide rods are supported in horizontal positions at one end by the frame 137, and at the other end by; a bracket 188 which ex,n

tends upwardly from thev base 80. Coil springs 189 are mounted between the bracketv and the adjacent ears` 186, and these springs tend normally to move the carrier 185 to-1 rd the right, as viewed in Figs. 1Q and The. carrier' 1s moved, periodically toward the left and against thecompression of the springs 189 by( means ofA a lever arm 190, which is pivoted at 191 on4 a flange 192, carried by the frame 187. This lever arm is provided :it one endwvitb ak longitudinal slot 193, which is engaged by a headless screw 191 secured to the carrier. This screw entends throngha slot 195 in-the carrier, and` carried by the frame 1537, and is' also sup-` a bearing formed in a vertical ported by l 4209 secured to the ends'of integral arms which extend longitudinally from the frame 18"?.

ri'he cam 199V is secured to theshaft betweenk the frame 137 and the plate. 200, and its angular position on the shaft may be regulated` by a set screw 202. The end of the shaft 135, which projects beyond the plate The movable carrier 185, which is actuated inthe manner heretofore described,isupports a vertically extending fined post' 210, which has mounted thereon a lined jaw 211 and a movable aw 212, both of which extend transversely of the machine and are provided at their ends with alining notches or recesses 2111, whiclrare adapted to aline with the notches 150 in the end of the winding arm 14-7, and also with the axis of the winding' spindle 144. The upper lined jaw 211 isV provided with avertical slot 215 at the end thereof, and one wall of thisslot terminates in a forwardly projectingtooth 216. The line' wire 155, by which the metallic tip is formed, is adapted to be looped around this tooth at the initial stage of the winding operation, as shown in Fig. 17, and at this stage of the operation the guiding member 1119, carried at the end of the winding arm, is adapted to lie in close contact with the laten al sides of the jaws 211 and 212. rThe lower jaw 212 is provid-ed with a rearwardly eX- tendingarm 218, and it is pivoted on the post 21() by means of a pin orscrew` 219. A. coil spring. 220 is attached to a screw 221, carried by the post 210, and the upper end of the spring is connected to the arm 218 at 222, so thatrthe lower jaw 212 is normally held in closed position, as'shown in Fig. 12.

A handle 224 extends upwardly from the` arm 218, so thatthe jaws can be opened to permit the insertion ofthe insulated wire 65 between them inj the manner illustrated in Fig. 18. It will be understood that the insulated wire A65, which initially has the appearance illustrated in Fig. 20, is first stripped at its end by the mechanism heretofore described, so that the end thereof then has the appearance illustrated at G5 in Fig. 21'. This projectingend 65H, having. the insulation stripped therefrom, is arranged to project beyond the jaws 211 and 212 into the notches 150 formed above the projection 151 at the end of the winding arm.

After the line wire 155 has been looped around the tooth 216, as shown in Fig. 17, and the insulated wire has been placed between the jaws in the manner just described, I the rotation of the winding arm 147 operates to form a spiral winding225 on the end of the wire, Vas shown'particularly in Figs. 18, 19, and 22, where the spiral winding is shown in the differentstages of completion. During this winding operation the carrier is gradually moved toward the left, as viewed in Fig. 11, due to the operation of the cam 199 and the lever arm 190, thus advancing the insulated wire progressively as the lineV i it is automatically released from the jaws of du' Pra k211 and 212 by means of certain mechanism illustrated particularly in Figs. 13 and 15, where it is shown in the two different stages of its movement. This mechanism comprises a releasing arm 230, which is secured on a shaft 231 j ournalled in brackets 232 carried by the sliding carrier 185. ThisY releas ing arm is provided at its upper end with a forwardly projecting fixed jaw 233 and with a movable jaw 234 forming a wire-receiving recess 235, which is adapted to aline with the notches 214 in the jaws 211 and 212 when the releasing arm reaches the proper position in its travel. The movable jaw is pivoted on the upper end of the releasing 'arm at 236, and this jaw is normally held in its open position by means of a wire spring 237, which is keyed around a pin 238 projecting laterally from the extremity of the arm 234:1, and which is connected at its other end to the releasing arm 230 by means of a screw 239.

' During the travel of the releasing arm 230 the movable jaw 234 is guided by a pivoted cam member 240, which is mounted to rock about a pivot 241 'carried by the post 210. An arm 242 extends rearwardly from the cam, and is connected to the sliding plate or carrier 185 by a spring 243, which normally holds the cam member in the'position illustrated in Fig. 13.V A lug 244 extends downwardly from the cam member to engage the rear side of the carrier 185, and the Vforward tilting of the cam member in opposition to the spring 243 is limited by the engagement of the lower extremity 245 thereof'with the upper surface of the carrier. The rear portion of the cam member 240, which curves upwardly and forwardly substantially concentric with the shaft 231, is provided along its upper edge with a notch 247, which is engaged by the pin 238 when the releasing arm is in its normal position, Vas illustrated in Fig. 13.

The releasing arm 230 is actuated' to moveV toward the left, asy viewed in Fig, 13, by means of a crank arm 249, secured on the shaft 231 by means of a set-screw 250. A connecting rod 251 is pivotally connected to the crank arm at 253, and the other end of this connecting rod is pivotally attached, at 254, to an upwardly extending operating lever This lever is pivoted on a bracket 256, carried by the base 30, and it carries a pivoted roller 257 which is adapted to c act with a cam 258 secured on the longitudinal shaft 87. lVhen the projecting part 258a of this cam comes in contact with the roller 257, the crank arm 249 is moved toward the right, as viewed in Fig. 12, thereby rocking the releasing Varm 230 to the left, as viewed in Fig. 13. The roller is maintained in contact with the cam 258 by means of a coil spring 259, which is connected to the lever 255 and to a screw 260 carried by the base plate.

As the releasing arm 230 reaches a position wherein the wire-receiving recess 235 registers with the wire-receiving notches 1n the jaws 211 and 212, the pin 238, carried by the aw arm 234, rides vup on the curved surface 261 of the cam 240, thereby closing the jaws 233 and 234 upon the insulated wire 65, which has just been spirally wound with the fine binding wire 155 at its end. it the same time the insulated wire is automatically released from the jaws 211 and 121 by means of a cam 262, secured on the shaft 8f. The major portion o-f this cam is concentric with the shaft, so that during a large part of the cycle of movement of the apparatus the extremity of the arm 218 rides upon the circular portion of the cam and permits the jaw 212 to remain in its closed position under the influence of the spring 220. Vhen the insulated wire is seized by the releasing jaws 233 and 234 the jaw arm 218 rides up on the projection 262a of the Cain, thus opening the movable jaw 212 and permitting the insulated wire to be carried in a forward direction by the releasing jaw as the releasing arm continues its forward movement.

As the releasing arm moves in a forward direction from the holding aws 211 and 212, the spirally wound tip 225, which is formed Von lthe insulated wire, is still connected to the supply of tine wire 155, whichis led thereto through the winding arm, and the forward movement of the insulated wire away -from the winding arm serves to draw out from this arm a new supply of line wire, 'thus taking up the slack which was created in the tine wire during the winding operation by the downward movement of the arm 171, controlled by the cam 177. TWhen a suitable length of wire has been drawn out from the end of the winding arm, this wire is cut 0E by means of a knife 265, which'is pivoted at26t` on the front face of the releasing arm 230. l The upper end of this knife blade is adapted to enter and coact with a groove or recess 267 formed in the side face of the lower fixed releasing aw 233. The wire which is drawn out from the nd of the winding arm extends across this groove, and at a suitable point in the operation of the mechanism the knife 265 is moved inwardly across the groove, therebyv cutting'the wire. This cutting movement otthe imite is effected by means of an oper-V ating arm 268, which is pivotally connected to the lower endv ot the lrnite, as shown at Q70.y This arm is provided with an otlset portion 271, adapted to travel in a cam slot Q72, tormedyin the curved plate 273, which is secured to the carrier 185 by means ot screws QTLlf. The other end o1 the actuating arm 268 extends beneath the curved plate, and is provided with a cylindrical eXtremity 275, adapted to torni a sliding engagementvwith the upper end ot the crank arm The actuating'arm is thus moved by the releasingr arm 230 andthe crank arm', and is guided by the cam slot 272. At a suitable point in its travel this cam slot guides the actuating rod toward the right, as viewed in Fig, 1-1, thereby causing the wire-cutting b adeQG toengage the notch 267 and sever the wire.

After the line wire 155 has been severed from the supply wirewhich leads from the winding arm, and while the insulated wire tcontinues to be held by the releasing` arm Q30, there is brought into action a wirepulling,l device, which is adapted to seize the tree end 277 of the tine wire which hasbeen woundaround the end ot the insulated wire. This tree end was initially looped around the tooth 215 et the holding jaw 211, as illustrated in 17, and, a'lter the spiral winding; 225 has been formed, this loop still remains around the tooth, as illustrated in Fig; 18; It is then necessary to seize the tree end ot this wire, which lies within the spiral windinfr and parallel to the insulated wire, in order to remove the loop. This operation is effected by meansot a wire-drawing arm 280, carried by a sleeve 281, which is'slidably and rotatably mounted upon the shaft Q31. A; coil spring 282 is mounted on the sleeve, between the arm 280 and one otthe bearingv brackets 232 in which the shaft is journalled,v and serves normally to torce the sleeve and wire-pulling arm .Q80 towardthe lett, as viewed in Fig. 11.

The upper curved Aextremity of the wirepullingarm is' provided with a longitudinal notch or recess 283, which is adapted to be engaged by aholding` arm or jaw 284, pivoted at 285 on the side ot the arm 280. The spring Q86 is mounted on the pivot pin 285, and engages a transverse lug,` 287 on the projectingentl of the holding` arm 284, so that the upper jaw o' this holding1 arm is nornnilly held in its open position. The jaws of the wire-pulling arm are controlled by a guiding` cam 290, which isv secured by a screw 291 to onevot the depending flanges 186 ot the carrier 185. Thisguiding` cam is curved forwardly and downwardly, as shown inFig. 14, and it is also curved longitudinally toward the right, as viewed in Fig. 1L

The pulling arm 2S() is provided with a projection 292, which is adapted to coact with the cam 290 and cause a movement ot said arm longitudinally oi the shaft 231, as the arm is moved in a forward direction. The 'pulling` arm is moved in a 'forward and downward direction by the shattfl by means ot a rod .QQ-el, which projects laterally trom the releasing arm 230. The lug 287, which is formed on the end of the pivoted jaw or arm 28-l, is adapted to coact with the upper surface ot the cam 290, and rwhen thisengagemeut lirst begins the projection 287 is adapted to ride in a depressed portionQQoi the cam. lWhen the cutting blade 265 is actuated by the rod 258 to sever the wire, as illustrated in Fig. i9, the projectinglug 287 ot' the jaw 284 rides up on the curved surface 296 ot the cam 290, and causes the jaw to grip the wire against the walls of the slot 283, which operation is illustrated particularly in Fig. 1,9. As the forward movement ot the arm 280 is continued, the insulated wire is still gripped firmly by the jaw 233 and 294iof the releasing` arm, Isince the projecting pin 23S ot the jaw continues to ride upon the upper curved surface :261 ot the cam 240, but the arm Q has a simultaneous longitudinal.moveinent, due to the action of thecain 290, and thus causes the loose end Q77 ot the line wire., at

155, to be drawn longitudinally of the insulated wire, therebyY eliminating' or drawing out the small loop Q98, which previously och cupied a position around the tooth 216 durinf;` the process ot winding.

During the movement ot'lthe arms 230 and 280, and after these arms have moved to a suliicient extent to eectthe cutting of the wire and the provision ot suiiicient clearance between the jaw 234e and the end of the winding arm, the tree endy ot` the wire 155, between the aperture 156 and the'end ot the winding arm and the point where the` wire has been cut by the knife 265, is bent around towards the right, as viewed in Fig. 11, until it occupies a position substmitially peinllel to the windingl arm 1er-'7. This operation is eiiectcd by means ot a bending arm 300, which is pivotally mounted at 301 upon the upper end ot the post 210. This arm carries a depending hook 302, which extends downwardly and is adapted to sweep around the ends ot the aws 211 and 212,' and around the end ot the projection 151 oi the winding` arm until the tree end of the wire 155 occupies n pes1 ion pf llc-l to the arm lll?. The. arm 300 then returns tothe normalposition illustrated in Fig. V7 is actuated nu, c

by a connecting rod 3043, which is pivotally y connected to a projection 30e thereon. -rhis connectiin,r rod 303 extends rearwardly, and is pivotally connected to the upper end of the operating` lever 305. rllhis lever is pivotally mounted on the bracket 256, by which 'ill Cil

to coact with a camY 307 mounted on theV shaft Si". fThis cam normally causes thc bending` arm 300 to occupy its normal position. WillenV the projection 30T engages the roller SOG, the bending arm is moved around its pivot to engage the projecting end of the wire 155. The. 4roller maintained in contact with the cam SGT by means of a spring 30S, which is connected to the lever and to a screw 309 projecting upwardly from the base.

hile the bending armis performing its function, the arms 230 and 27870 continue their downward movement until the projecting pin 238, carried by the jaw 2.134, passes ont of engagement with the cnr'fed surface 261 of the cani .240 and enters the depressed portion 311 of the cam.r This movement of the pin permits the 2311 to open, due to the action of the spring 237, and at the same time the holding aw 284 of the pulling arm is opened by the spring 286, due to the engagement of the lug 287 with the lower' recessed portion 312 ofthe cam 290. The insulated wire 65, provided wth its spirallyV wound tip, and the projecting end of the Wire which has been drawn out by the pulling arm are thus automatically released by the jaws which have been holding'thenn-and they are free to drop therefrom. Tl e remov-al of the wire from the jaws is ensured by means of a toggle me aber 231-1, which is pivoted at 315 on an arm 316 entending upwardly from the baseBO. This toggle member has a curved face Y517, which normally occupies a position in the path of hook member overlying the insulated wire,

the inward movement of the toggle'niember being limited by a lug 319, which projects over the outer face of the wire G5 has been released by the jaws 211 and 212 and the jaws 233 and 2311, the arm 230 begins its return movement, and the wire 65 is then positively forced out of en`- gagement with the jaws by the toggle 314, in case the wire has not -already dropped by gravity. Y j

.As the arm 230 continues its return movement the cutting blade 265 is again opened by the engagement of the actuating rod 26S with the cam slot 272. so that the Vproj` ect-ingr end of the cutting blade is adapted to pass beyond the inturncd end 14S of the winding arm 14T as the releasing arm 230 passes between the end of the Vwinding arm and the holding jaws 211 and 212. During the time that the releasing arm'is performing its forthe arm 316. VheirVV ward and return movements, the Winding arm 1117 remains stationary, due to the fact that the roller 122 is then engaging a portion of the cam 120, which permits the lever 125 and the rack bar 133 to remain substantially stationary while the shaft 87 continues to rotate and actuate the holding, cutting and bending arms. d

As soon as the releasing arm 230 has re-l turned to a position rearwardly of the winding arm, the rack bar 133 begins its upper movement, thus causing the winding arm to continue its rotation and causing the shaft 135 to renew its actuation of the canr199, thereby returning the carrier 185 to the right, as viewed in Fig. 11, due to the operation of the lever 190. The return motion of the carrier is continued by the'cam until the wire-holding member 149, at the end of the winding arm, occupies a position substantially in contact with the side faces of the holding jaws 211 and 212. During this movement of the carrier 185 the arms 230 and 280 remain substantially stationary, eX- cept for their bodily movement with the carrier. Y

l/Vhen the wire-holding member 1&9 has engaged the side faces of the holding jaws 211 and 212, it will be found that the stop arm 204' is engaging the upper stop screw 20T, and that the rack bar 133 has reached the upper limit of its travel. The ar1n97, which drives the shaft 87, through the engagement of the pawl 92 with the ratchet wheelQO, will also have completed one revolution, so that the recess 92a in the pawl will again engage the pin 1GO carried by the arm 101, thereby releasing the pawl from the ratchet wheeland arresting the operation of the mechanism, except for the continued operation of the stripping apparatus, which is operated dir ctly by the shaft 37.

The parts are'then in readiness for another operation of stripping' and winding` Jdie end portion of the insulated wire. After the wire has been stripped in the manner described, it is placed between theV holding jaws 211 and 212, and the operation, as previously described, continued until the winding operation is completed. At somepoint during the. winding operation, and before the insulated wire has beencarried in its forward movement by the arm 230, the pullingarm 280 is returned to its ripper position by means of a rod 320 which extends longitudinally from a curved lever 321, pivoted at on the upper projection 323 of the carrier 185. This lever is actuated by a. connecting rod which is pivotally connected to the central part thereof, as shown et 325, and attached at the other end to the upper end of the lever arm 326, This lever portion of the lever isy provided with a roller 329 adapted to coact with a cam 330, liXed on the shaft 87. This lever 321 normally assumes, by gravity, the position illustrated in Fig. 14, but during the winding operation the projecting portion of the cam engages the roller 329 and causes the rod 320 to push the arm 280 upwardly and force the projecting lug 287 of the. jaw L284 over the shoulder at the lower edd of the curvedportion of the cam 290. The return movement oE the lever 280 is limited by the engagement of the projecting arm 280,a thereof with the upper surface of the carrier 185, and when this position is reached the lug will engage the depressed portion 295 of the cam 290, and thus allow the jaw 284 to assume an open position, in readiness to engage the free end 277 o'f the line wire 155, when this end portion is carried in a forward direction by the jaws 233 and 234. The mechanism in the region of the cam slot 272 is protected by a guard plate 332 and a similar guard 333 is mounted over the stripping apparatus.

The operation of the apparatus, which is doubtless clear from the foregoing description, may be briefly summarized as follows: The shaft 27 rotates continuously and the spring blades carried by the arms 42 are held apart by the action of centrifugal force, the openingmovement of the arms being limited by the springs 44 and by the vengagement of the ends of t-he arms with the `collar 54. The operator inserts the end of the insulated wire between theV holding arins 68 and above the supporting member 80, these arms being normally spread apart by the action of the spring 76. After the end of the wire has been brought into engagement with the recess SL of the stop member S3. the operator causes the chain G6 to be pulled downwardly, thereby lowering the lei-ier GO, closing theholding arms 68, and causing the collar 54 to slide in a forward direction and close the stripping blades 5() upon the wire 65. The insulation is thus cut :from the wire, and is removed therefrom when the wire is pulled outfrom between the jaws. lVhen the operator releases the chain 66, the parts of the stripping apparatus are automatically returned to their normal positions, as illustrated in F 2, by the action of the spring `61. The operator then separates the holding jaws 211 and 212, by pulling in aforward direction on the handle 224. The wire 65 is then passed inte engagement with the notches 214 of these jaws, with the stripped end portion thereof projecting over the projecting part 151 of the wire-holding member 149 and in rt 'er with the notches 150 at the end of the winding arm 147. Before placing the insulated wire in this position, the tine wire 155 is looped around the tooth 216, as illustra-ted in Fig. 17. The parts are then in readiness for the winding operation, which is begun by manually kmani'pulating the hand lever 107, in order to actuate the arn'i 101 and permit the pawl 92 to ride over the pin 100, so that it will be permitted to pass into engagement with the teeth of the ratchet wheel 90. The shaft S7 is then rotated by the ratchet wheel, and the levers 124 and operate the rack bar 133 to effeet the actuation of the winding spindle 144 through the train of connected gears.- As the winding arm 147 is rot-ated the transverse end portion 148 thereof and the wireholding member 149 are carried around the projecting end portion of the wire 65, and at the same time the carrier 185 is moved toward the lett, as viewed in Fig. 11. due to the action of the cam 199, so that the line wire 155 is caused to form a closely arranged heliX on the end of the insulated wire.

During this operation the arm 175 is moved downwardly under the control of the cam 177, in order to provide sla-ch in the wire 155, 'which may be drawn up in readiness for the next succeeding operation of winding. `When the spiral winding of the end of' the insulated wire has been completed, the rack bar 133 will have reached the lower limit of its travel, and it is then permitted to assume a substantially stationary position, due to the curvature of the slot 121 in the cam 120. The wire-holding member 149 is then 'separated from the holding jaws 211 and 212, and the cam 258 then operates the lever 255 to turn the crank arm 249 and carry the releasing arm 230 in a forward direction. As this arm passes between the wire-'holding jaws, the insulated wire is released by the holding jaws and is gripped by the jaws 233 and 234. The insulated wire is then carriedin a forward direction away from the winding arm 147, and this operation serves to pull out the slack which has previously been provided in the wire 155 by the action of the arm 171.

After this wire has been drawn out, it is severed by the actionof the cutting blade 265, which is actuated by the rod '268, and at the same time the free end 277 of the wire, which has been wound around the insulated wire, is gripped by the movable jaw 284 at the upper end of the pulling arm 280. rIhe releasing arm 230 and the pulling arm are then moved in a downward direction and simultaneously spread apart, so that the free end of the wire is pulled out to eliminate the loop which previously passed around the tooth 216. When the arms 230 and 280 reach the lower limits of their travel their jaws are separated by the action of the cams 24() and 290, respectively, and the insulated wire is then permitted to be withdrawn, either by gravity or by the aetion of the toggle 314. yThe arm 230 then

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