US1459013A - Coil-winding machine - Google Patents

Description

E. F. CREAGER ET AL June 19, 1923.

COIL WINDING MACHINE "12 sheets-sheet 1' Filed Nov Mffiesss E, F. CREAGERET AL June 19, 1923.

COIL WINDINGMACHINE Filed Nov. 25 1918 l2 sheets-sheet 2 June 19, 1923. Y

. r E. F. CREAGER ET AL COIL WINDING MACHINE Filed Nov. 25 1918 12 sheets-sheet 5 ww om June 19; 1923.

E. F. CREAGER ET AL COIL WINDING MACHINE Filed Nov. 25. 1918 12 sheets-sheet 5 June 19, 1923.

- 1,459,013 E. F. CREAGER ET AL COIL WINDING MACHINE Filed Nov. 25 1918 '12 sheetsheet 6 aw n u n HLV. F [In nuwl nhwl E. F. CREAGER ET' AL June 9, 1923.

COIL WINDING MACHINE Filed Nov. 25

1918 l2 sjggets-shegj; '2

.H m :m uhnfl -1 -rvi Il nnN u June 19, 1923.

E. F. CREAG'ER ET AL.

- COIL WINDING MACHINE .Filed Nov. 25 1918 .12 sheets-sheet 8 June 19, 1923.

E. F. CREAGER ET AL COIL WINDING MACHINE Filed Nov. 25 1918 12 sheets-sheet 9 wmnuuhhl u Hahn H MAK u W June 19, 1923.

, 1,459,013 E. F. CREAGER ET AL COIL WINDING MACHINE Filed Nov. 25 1918 12 sheets-sheet 10 E. F. CREAGER ET AL COIL WINDING MACHINE June 19', 1923. 1,459,013

Filed Nov. 25 1918 12 sheets-shee t 11 38/ ZE -ji Jung 19, 1923. 1,459,013

E. F. CREAGER ET AL COIL WINDING MACHINE Filed Nov. 25 1918 12 sheets-sheet 12 Patented June 19, 1923.

EDWIN F. CREAGER AND SAMUEL ROGERS, O ANDERSON, INDIANA, ASSIGNORS TO THE REMY ELECTRIC COMPANY, A CORPORATION OF INDIANA.

COIL-WINDING MACHINE.

Application filed November 25, 1918. Serial No. 263,989.

Ti; aZZ w l'wm it ma y concern:

Be it known that we, EDWIN F. Cnmenn and SAMUEL Rocnns, citizens of the United States of America, residing at Anderson, county of Madison, State of Indiana, have invented certain new and useful Improvements in Coil-Winding'Machines, of which the following is a full, clear, and exact description. I

This invention relates to machines for winding coils of wire, and particularly for forming inductive windings. of electrical apparatus, consisting of' a plurality of layers of wire insulated from one another. The principal objects are to provide means for manufacturing a coil having successive layers of wire-windings separated by insulating tubes, each tube comprising a plurality of layers formed from a relatively wide sheet of insulating material, without cutting the sheet into the different lengths required for the tubes prior to the forming of the latter, to insure attention on the part so as to avoid the vuse-of imperfect insulating material, and to provide controlling olevices which insure a uniform product with a large capacity production.

Other and further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings, wherein a preferred embodiment of the present invention is clearly shown.

In the drawings:

Figs. 1 and 2 taken together form a plan view of the coil winding machine embodying the present invention.

Fig. 3 is a sectional view taken on the line 33 of Fig. 1.

Fig. 4 is a longitudinal sectional view of the head stock shaft taken on the line 4-4 of Fig. 1.

Fig. 5 is a sectional view taken on the line 5-5 of Fig. 1.

Fig. 6 is a sectional view taken on the line 6-6 of Figs. 1 and 2.

Fig. 7 is a sectional view taken on the line 77 of 1 and 2.

Fig. 8 is'a sectionalviewtaken on the line 8-8 of Fig. 7.

Fig. 9 is a plan view of the hand wheel shaft assembly. -Fig. 10 is an end view of the shaft assembly, shown in Fig. 9 looking in the direction of the arrow 10.

Fig. v11 is a sectional view taken on the line 1111 of Fig. 9. Fig. 12 is a plan view of the coil separating mechanism.

Fig. 13 is an end view of the coil winding machine, certain parts being shown in Fig. 14 is a front elevation of the tail stock and parts associated therewith.

Fig. 15 is a sectional view taken on the line 15-15 of Fig. 14.

Fig. 16 is an enlarged scale sectional view taken on the line 16-16 of Fig. 2, certain parts being omitted for the sake of cle'arness. 'Fig. 17 is a longitudinal sectional view of the coil winding spindle. of the operator to the forming of the tubes Fig. 18 is an end view of the spindle looking-in the direction of the arrow 18 in Fig. 17..

Fig. 19 vis a sectional view taken on the line 1919 of Fig. 17.

Fig. 20 is a sectional view taken on the line 20-20 of Fig. 17.

Fig. 21 is a side elevation of devices for.

carrying the paper and spools of wire which are to be wound on the spindle.

Fig. 22 is a front elevation of the parts shown in Fig. 21.

Fig. 23 is a wiring diagram, certain of the controlling devices being shown in connection therewith. v

Descfiptz'on 0;" power devices and chat'ch.

Referring to the drawings:

50 designates a base upon which the parts ports a rotatable and longitudinally slidable clutch disc 56 carrying a contact rings 57 .of leather or other suitable friction material, which contactswith the disc 54 when the clutch is engaged. The slidable clutch member 56 is formed with a pulley groove 56 and a second groove. 58.

gamma of catch.

- A fork lever 60 journalled upon a pin 61 which is fixed upon the frame 51, carries shipper yokesegments 59 which ride in the groove 58 formed in the member 56. A spring 62 is connected to the frame 51 at 63 and to the lever 60, and said spring 62 tends to move the lever 60 in such a direction as to cause the separation ofmembers 54 and 56'.

Movement is imparted to the lever 60 by means of a hand lever 65 which is pivoted at 66. Said pivot 66 may be some point on the bench 40, which supports the base 50, but for the sake of clearness' is not shown located in this manner in Fig. 4.---

link 67 is connected with the lever 65, and a screw threaded portion passes through bar 68. The relation of the link 67 to the bar 68 may be regulatedby means of nuts 69, 70 and 71. The bar 68 is connected by means of springs 72 and 73 with the lever 60.

Another means of moving the lever 60 comprises the solenoid armature 75, which cooperates with the solenoid, magnet 7 6. sup

ported by a frame 77, said frame being mounted upon the bench 40.

. A still further means of moving the lever 60 consists of an L-shaped bar 80, see Figs. 1, 3 and 4. The bar is pivotally mounted upon a pin 81 which is carried by a block 82 mounted upon the frame 51. connected at one end to the bar 80 and passes through a hole 84 in the lever 60. Nut 86 threaded onto the end of link 83 and the portion of the bar 80 contacting with the nut are formed with complemental spherical surfaces 85. A lock nut 87 cooperates with the nut 86 to maintain the nut 86 in fixed relation with the link 83. a

The free end of the bar 80 is provided with a slotted hole 88 which cooperates with a pin 89 carried by a lever 90. Lever 90 is fixed upon a shaft 91, said shaft 91 being journalled upon a block 92 carried by the frame 51. Upon the upper end of the shaft 91 is fixed a lever 93. Lever 93 carries pins 94 and 95 which cooperate, respectively, with w the grooved ends of stop screws 96 and 97 which are mounted upon the frame 51 in such a manner as to be slidablein a direc- 0 tion parallel with the head stock shaft 53.

The stop screw 96-carries stopnuts. 98 and the screw 97 carries stop nuts 99. It is apparent therefore that any object moving in a direction parallel with the stop screws 96 A link 83 is ,with

ment would be imparted to the lever 80 and the lever 60 Wire feeding mechanism; I

A sleeve 100 is slidably mounted, upon the I shaft 53 and is held in fixed rotative relation therewith by means of the key 101. Sleeve 100- carries gears 102 and 103. A plunger 104'is carried by the sleeve 100 and is yieldingly pressed against the shaft 53 by means of a spring 105. The shaft 53 is provided with longitudinally spaced notches 106 and 107 withwhich the plunger 104 cooperates to yieldingly lock sleeve 100 in one of two positions; relative to the shaft 53. A washer 108 is secured upon the end of the shaft 53 by means of the screw 109 and serves to limit the movement of the sleeve 100 in one direction. Hand wheel 110 provided with a handle 111 is secured upon the sleeve 100 by means of a pin 112. By means of the hand wheel the shaft 53 may be manually rotated if desired, and sleeve 100 be moved longitudinally of the shaft 53- to either of the positions determined by' the notches 106 the arrows 126, 127 and 128. It is apparent that the speed ratio between the feed screw shafts and and the shaft 53 can be varied by shifting the sleeve 100 axially of' theshaft 53 in order to bring gear 102 into mesh with gear 121 or gear 103 into mesh gear 122. Hereafter the feed screw shafts will be referred to as screws.

A feed nut having screw threaded surfaces 131 and 132 which are adapted to engage with feed screws 125 and 120, respectively, is mounted upon the feed nut rod 133.

Lever 135 is pivoted at one end upon a pin 136 carried by nut shifting cam shaft bracket 137. Bracket 137 supports for rotation nut shifting cam shaft 138 carrying at one end a gear 139 and atthe other end the nut shifting cam 140. Cam 140 is provided with a cam race 141 which cooperates with the 65 and 97 which should strike the stop nuts roller 142 rotatably journalled upon the pin 143 carried by the lever 145. The link 134 I is provided with sleeves 144 and 145, and with springs 146 and 147 which are located respectively between sleeves 144, and 145, and nuts 148 and 149 which have screw threaded engagement with the link 134. When the lever 135 is in the position shown in Fig. 3, the nut 148 may be adjusted along the link 134 in order to put the proper amount of compression in the spring 146 whereby the sleeve 144 will be yieldingly held in engagement with the lever 135, and the nut 130, in yielding engagement with the screw 125. Likewise after moving the cam 180 from this position shown in Fig. 3, the

nut 149 may be adjusted whereby to place compression in the spring 147 in orc'lerthat the sleeve 145 may be yieldingly pressed against the lever 135. In this manner the nut 130 will be held'yieldingly against feed screw 120. Look nuts 150 and 151 are employed for holding the nuts 148 and 149, re-

spectively, inadjusted positions on the link 134.

. The feed nut rod 133 has a reduced outer end portion 153 upon which are mounted a collar 154 and hub 155 to which is fixed a bar 156. Therod 133 may be rotated with "thereon. The wheels 163 are located with respect to one another and to the rod 160 by means of sleeves 164 and 165 which are prevented from movement relative to the rod 160 by means of set screws 166.

Arbor tail stock. Referring to Figs. 2,13 and 14, 170 designates the tail stock frame which is mounted upon the base 50 and supports the bracket 162 which has just been described. Frame 170 supports a nut 171 in which is mounted a screw 172 which may be turned by means of a hand wheel 173. The nut 171 carries the tail stock pin 174. While the nut 171 is in-position in the frame 170, hole 175 .is bored at right angles to the axis of the nut 171, and in this hole 17 5' are located clamping members 176 and 177, the former having screw threaded engagement and the latter having sliding engagement with the screw 178 provided with a hand wheel 179. The

presence of the clamping members 176 and 177 within the hole 175 prevents longitudinal and rotative movement of the nut 171 with respect to the frame 170. By turning position and to prevent accidental movement of the hand wheel 173.

By referring to Fig. 4, it will be seen" that the head stock shaft 53 is provided with a tapered end portion 53, and it will beunderstood that the shaft 53 and the pin 174 are located in exact alinement with one another.

, 00a winding Mm. Referring now to Fig. 17, 180 designates as a whole the coil winding arbor, which includes arbor shaft 181 having conical recesses 182 and 183, by means of which the shaft 181 may. be journalled upon the head stock shaft 53 and the tail stock pin 174. Shaft 181. is generally rectangular in cross section as shown in Figs. 19 and 20, butis providedwith plain cylindrical portions 184 and 185 and a screw threaded cylindrical portion 186. A nut 187 cooperates with the screw thread 186 and supports half- ring members 188 and 189 which are adapted to project into a groove 190 formed upon the half-shell portion 191. The half-shell portion 191 has a cylindrical outer surface but is provided with a rectangular groove 192 into which projects a portion of the bar 181; The bar 181 is provided with notches 193 and portions 194 which are inclined with respect to the axis of the shaft 181. Rollers 195 journalled upon pins 196 carried by the shell 191 project into the notches 193 and ride upon the inclined surfaces 194. A half-shell portion 197 having an outer cylindrical surface is provided with a rectangular groove 198 into which projects a portion'of the shaft 181. Shell portion 197 is fastened to the shaft 181 by means of screws 199. When the shell portions 191 and 197 are in the position as shown in Fig. 1, their outer cylindrical surfaces form a substantially continuous cylindrical surface upon which the paper and wire are wound. The shell portions 191 and 197 are provided with port- ions 200 and 201 which when in the position as shown in Fig. 7, form a substantial continual cylindrical surface over which projects a cup-shaped member 202 which is secured to the shaft 181 by the means of a pin 203. In this manner the movement of one end of the shell portion 191 away from the shaft 181 is limited. The movement of the other end of the shell portion '191 away from the shaft 181 is limited by the engagement of the half-ring member 188 or- 189 with the groove 190. It is apparent that when the nut 187 is turned in such a manner as to be, moved toward the left hand end ofthe bar 181 as viewed in Fig. '17, the nut will move the upper shell section 191 relative to the shaft 181 and lower shell section 197 releasing the pressure on the rollers 195 and permltting the shell portion to approach each other. When'this occurs it is vapparent that the cross-sectional area of the spindle 180 wjll be reduced, thus facilitating the reoval of the coils which are wound upon the spindle.

Arbor driving plate.

In order that the arbor 180 may be turned with the head stock shaft 53, the shaft .181"

is provided with a disc 205 having a hole, 206 which receives a plunger 207 supported by a face plate 208 fined upon'the shaft 53. The plunger 207 is mounted within a bushing 209 carried by the face plate 208, and the plunger 207 is yieldingly pressed in a direction to the right as viewed in Fig.4, by means of a spring 210\pressing against a shoulder formed on the plunger 207 and against a plate 211 fastened to .the face plate 208 and through which the plunger 207 passes. It will be apparent therefore that when power is'applied to the pulley 57, and when the clutch members 54 and 56 are in engagement, the arbor 180 will be rotated. The shaft 53 is also provided with a pinion 212 by means of which the shaft 53 may be turned when said pinion is engaged by gearing to be described, in the following paragraph.

Paper feeding and cutting mechanism.

Referring particularly to Figs. 6, 7 and 9, 220 and 221 design-ate shaft brackets which are mounted upon the base 50 and secured thereto bymeans of screws 222 and 223. Brackets 220 and 221 support for rotation theshaft 224. Referringto Fig. 9 in which the hand wheelshaft assemblyis shown, shaft 224 carries a nut shifting cam, driving gear 225, a paper feed roll driving gear 226, arbor. driving gear 227, shear cams 228 and 229, counter-driving gear 230 and the hand wheel 231. The base 50 supports a bracket 232 which carries a bearing 233 in which the right hand end of the shaft 224 is j ournalled.

. The gears 226 and 227 are mutilated, as

shown in Figs. 10 and 11. When the shaft 224 is in the home position, gears 226 and 227 and the cams 228 and 229 will be in the position shown in Figs. 5, 10 and 11. The cams 228 and 229 are provided with shallow notches 235 which in the home position'of the shaft 224 occupy positions vertically above the axis of the shaft 224.

As shown in Fig. '3 the gear 225 meshes be moved out of engagement with the feed screw 125 and into engagement with the feed screw 120. J I

Referring more particularly to Fig. 7, 250 designates a stationary shear blade. mounted upon brackets 220 and 221 and supportin a shelf 251 which serves. to support t e paper as it leaves the rolls 238 and 239, and to direct the paper across the upper surface of the shear blade 250. The movable shear, blade 252 which, cooperates with the shear blade 250 is mounted upon shear blade blocks 253 and 254, which are mounted for vertical movement upon screws 255 and 256, respectively, carried by brackets 220 and 221 respectively. Blocks 253 and 254 are provided with cam followers 257 and 258 -which cooperate with shear cams 228 and 229, respectively. A shear block tie bar 259 is secured at either end upon the shear blocks 253 and 254 and is provided with holes through which the bolts 255 and 256 may extend. Adjusting screws 260 pass through the shear blade 252 and into the tie bar 259, and springs 262 are interposed between the blade 252 and the tie bar 259. Springs 261 are interposed between' the heads of screws 260 and the sharpened edge of the blade 252 may be maintained in correct relation with the sharpened edge of the blade 250, Screws 263 and 264, having threaded engagement with brackets 220 and 221, respectively, are employed for the purpose of adjusting the blade 250 relative to the blade 252. Springs the tie bar 259 may be adjusted, and the 1 265 and 266 cooperate with the heads of bolts'255 and 256 respectively and with the upper surface of tie bar 259, in order to maintain the cam followers 257 and 258 in operative relation with the shear cams 228 and 229 respectively.

To prevent the edge of paper moving upwardly with the upward movement of the shear blade 252, a paper retaining bar 267 I is mounted upon the blade 250 but separated therefrom by spacers 268 and 269. Spacer 269 has an upstanding leg 269 against which the shear252 bears, in order that interference with the edge of the blade 250 will be prevented. 1

, 0027 separating provisions.

* When a plurality of layers of insulating paper have been wound upon the spindle,

a tube of paper is formed which must be divided in order that the coils may be separated from each other on being removed from the spindle. The mechanism for dividing the insulation will now be described.

'Referring more particularly to Figs. 5, 9

and 12 arins 270 and 271 are loosely journalled upon the shaft 224 and the free ends thereof are provided with notches272 as shown-in Fig. '5. These notched ends of the arms 270 and 271 hook over a rod 273 which is loosely journalled upon arms 274 and 275. These arms 274 and 275 are in turn loosely journalled upon a rod 276. The ends of rod 276 normally rest upon inclined surfaces 277 and 278 formed upon bars 279 and 280 respectively. Clamped upon the rod 273 are a plurality of knife blade holders 281, each of which carries a knife blade 282 which is clamped to the holder 281 by means of a clamping bar 283 and a screw 284. Sleeves 285, 286 and 287 serve to space the knife blade holders 281 at the cor- I thereby causin rect distances from one another and from the arms 274 and 275. The location of the knife blade holders 281 is such that the cutting ed es of the knife blades are located in 'a inement with the grooves 180 of the spindle 180. Nuts 288 and 289 cooperate with the threaded end portions of the rod 273 and serve to maintain the 'parts supported upon the rod 273 in correct position. The lower surfaces of the freeend of the knife blade holders 281 rest upon the upper ends 'of adjusting screws 290 which have screw threaded engagement with ad-' justing screw bar 291 which is secured at each end thereof upon the arms 270 and 271. A lever'292 is mounted upon the rod 276. B reference to Fig; 5 it will be seen that w en the outer free end of the lever 292 is raised, the upper surface ofv said lever 292 will engage one of .the sleeves 286 car-.

ried by the rod 273. This movement of the lever 292 will cause the rod'273 to move upwardly and the bars 27 0 and 271 to swing upwardly about the shaft 224 as an axis,

the knife blades 282. While the movements referred to are taking place the outer ends of the rod 276 are ridin' upwardly on the inclined surfaces 277 an 2780f the blocks 279 and 280. Thus it will be seen that the arms 270 and 274, and the arms 271 and 275 cooperate together as the links of toggle oints. Dhereforeit is apparent that very little force. need be exerted :upwardly upon the outer free end of the lever 292 in order to obtain suflicient pressure at the knife blades to force the latter through several thicknesses of pa er wound upon the spindle. The upward movement of lever 292 is limited by the rod 276 striking against screws 294 passing through bars 27 9 and 2 80. The form of mechanism for separating the gan upward movement of,

coils just described provides for the ready removal of apart of said mechanism. from the coil winding machine. When it is desired to renew the knife blades 282 it is only necessary to remove the arbor 180 from the machine and then to swing the arms 27 0 and 271 upwardly so that the free ends are out of engagement with the rod 273. When this Y is done the rods 273 and 27 6 and the parts attached thereto may be removed from the machine, in orderthat the knives may be replaced. By removing the arbor, the knife blade'holders 281 can be swung toward the front of the machine to .a more accessible position, without removing any of .the separating knife mechanism from the machine.

.(Munter and signal.

Referring to Fig. 13, 300 designates a counter shaft bracket secured upon the base 50 and providing a bearing for a counter shaft 301 upon which is formed a gear 302 which meshes with thecounter drivinggear 230 carried by the shaft 224. (See Fig. 9.) The. shaft 301' carries a post 303 upon which is mounted a. split sleeve 304 1 a hole 317 which is located concentrically with the sleeve 304 but out of contact therewith. Referring to Figs. 2 and 13, the dial '310 carries a stud 318 located in the path of the hand 305. Referring to Fig. 13 the dial 310 is shown diagrammatically connected by wire 320 with a hell or other signaling device 321, connected with a source of current 322 which is grounded by means of wire 323 upon the bracket 300. It is'apparent therefore that whenever the hand 305 strikes against the stud 31 8 an electric circuit will be formed causing bell 321 to ring. The use I of this signal will .be described in connection with the description of the operation of the machine.

"The base 50 may be provided with an oil receptacle 330 from which a small quantity of oil may be removed by means of brush 331 and applied to the tail stock pin 174, in order to reduce friction between the spindle 180 and the pin 174.

Paper roll holder and term'mt device.

' A device for holding the roll of insulating paper maintaining the required amount of tensioning thereon will now be described- Mounted upon the bench 40 and to the rear of the frame/50, see Figs. 5, 21 and 22, are

the nuts 358, 358 it will be seen that a roll of paper may he slipped on the shaft 354 with one end of the roll touching one of the nuts 357, 357. By applying the nuts 358, 358 the roll of paper 359 (see also Fig. 5) may be clamped in position upon the shaft 354.

One end of the shaft 354 is provided with a groove 360 which receives a shoulder 361 provided on a screw 362 which has screw threaded engagement with a bracket 363 supported by the frame 351. The screw 362 is provided with a hand wheel 364 by means of which the nut may be turned to efiect longitudinal movement of the shaft 354. The adjustment described permits of aligning the paper roll with the arbor 180. A set screw 365 having screw threaded engage.-

ment with the bracket 363 serves to maintain, the adjusting screw 362 in fixed position,

Secured upon the'other end of the shaft 354 is a grooved band wheel 366 around which,

passes a leather band 367. Said band 367 passes around a stud 368 fixed upon the bracket 350. The ends of the band 367 are united b meansof a sprin 369. Referring to igs. 5, and 21 it wi 1 be seen that the paper which is represented by the dot and dash line 370 iswound oil the roll of paper 359 in such a direction that the roll rotates in a clockwise direction, It will be seen that the spring 369 islocated back of a vertical plane passingthrough the axis of shaft 354 and stud 368. This arrangement is necessary in order that the clockwise rotation of the paper roll 359 may be yieldingly restrained whereby to place a substantially uniform tension on the paper 370as it is unwound from the paper roll, resulting in keeping the paper stretched and w free from wrinkles.

"Wire umm'mdiing mechanism. The device for-unwinding the wire from the reels upon which the wire is wound when received from the manufacturer will now be described. Referring to Figs. 5, 21 and 22 the brackets 350 and 351 support a platform 380, upon which a, plurality of reels 381 of wire may be mounted.

A tubular post 382 is fixed in a vertical position upon the platform 380, and supports for rotation a spindle 383. Said spindle 383 is provided with a shoulder 384 which rests upon a felt washer 385 which in turn is supported upon the upper surface .mounted for rotation a cu of the post 382. The lower end of the spin:

dle 383 is provided with screw threads which are engaged by nuts'386 and 387. A felt washer 388 and a metallicwasher 389 are mounted upon the spindle383 and are held in position by means of the spring 390.

It is apparent that .by adjusting the nut 386 i the tension on the spring 390 may be varied whereby to vary the friction between the spindle 383 and the post 382. It is de-.

sirable that a certain amount of friction shall exist between the spindle 383 and the' winding speeds, than where there is a metal.

'to metalfriction contact between the spindle and the post. i The upper end of the spindle 383 is provided witha pin 392 extending transversely -of the spindle and beyond the cylindrical surface thereof A thimble 393 fits over the upper end of the spindle 383 and is pro-.

vided with notches 394 which receive the projecting ends'of the pin392. In this manner the thimble 393 is made to turn with the spindle 383.

Thethinible 393 duced upper end portion 397 upon which is 398. The cup 398 carries a pin 399 to wh1ch one end of a coil spring 400 is connected. The other end" of the spring 400 is connected with the reduced portion 397 of the thimble 393. A cover 401 cooperates with the cup 398 to form an inclosure for the spring. A screw 402 having threaded engagement with the reduced portion 397 of the thimble 393 maintains the cover 401 and cup 398 in position upon the thimble 393. A finger 405 is secured atone end upon the cup 398 and at its'lower end carriesga fork 406 in which is rotatably mounted? a I wheel 407, said wheel being located substantially midway between the ends of the 'reel 381. The device for unwinding the wire from the reels which has just been described is not our joint invention but is described and claimed in the co-pending application of Samuel Rogers, Patent No. 1,348,321, patented August 3, 1920.

A dog 408 is secured upon the platform 380 adjacent the post 382 and pierces the lower wooden end of the reel 381, inorder to prevent said reel from turning upon the post 382.

is provided with a reito Referring to Fig. 21 a plurality of posts A 410 are shown mounted upon the platform 380, each of these posts beinglocated in a the device which is to follow, this arrangement is necessary in order that the turning couple acting upon the spindle 383 may be constant.

Control when wire breaks.

A leaf spring 415 is mounted at one end upon the bracket 411 and the outer free end thereof engages pin 416 carried by the tension wheel frame 412. This spring 415 tends to move the tension wheel 413 in an upward direction. The spring 415 has an electrical connection with the bracket 411. 'A spring contact 417 is mounted upon the bracket 411 but insulated therefrom.

'Referrin to Fig. 5 the line 420 designates the wire eading off from the spool 381 around the guide wheel 407 and upwardly around the tension wheel'413 then downwardly around the wire guide roll 163 and then around the arbor 180. On account of the. friction maintained between the spindle 383 and the post 382, as previously described, suflicient tension will be maintained on the wire 420 to maintain the springs 415 and 417 out of engagement as shown in Figs.

5- and 21, and MA, in Fig. 23. If, however. the wire 420 should break the spring 415 will be released and cause the tension roll frame 412 to move upwardly to the position shown at B in Fig. 23. When this occursthe following circuit will be established battery 425, wire 426,'magnet 427, Wire 428 the dotted line position as shown in Fig. 23,

current will flow through the lever '65 through switch contact 429 to ground and thence back through the post 410 which is grounded, and across contacts 415'and 417 and thence by wire 430 on to battery When this circuit has been established an armature 431 will be attracted by the magnet 427 and cause a closing of contacts 432 and 433. When contacts 432'and 433 are closed current from a 110 volt light circuit or other source of electric current willflow through the solenoid 76 and thereby cause the attraction of'solenoid armature 75. This together and the wire threaded around the tension roll 413, thus restoring conditions to normal and permitting the contacts 415 and 417 to be maintained outof engagement by the tension on the wire.

The electric circuits described permit not only the use of an available high voltage current for operating the solenoidmagnet,

but the complete insulation of such a current from the machine, whereby the operator will be protected from shock.

A motor 500 shown diagrammatically in Fig. 3 is connected by means of a belt 507 with the pulley 56 for'the purposeofdriving the shaft 53 when the clutch members are engaged.

ode of operation.

The operation of the machine will now be described.

Let it be assumed first that the reels of wire are in position uponothe platform 380 eration can readily be performed since the release can be swung upwardly away from tli e'roll 238. The drawing of the end of the paper is continued until the edge of the paper passes overthe shelf 251 and up to the cuttin edge of the blade 250. Then the upper roll 239 is allowed to descend upon the paper and to hold it in the posit1on described.- The tail stock feed screw 173 is turned so as to recede the tail stock pin 174 from the head stock spindle 53. The arbor".

180 is placed in position with its conical seat 182 resting on the tapered end 53 of the head stock spindle 53. The arbor 180 is rotated manually until the spring pressed plunger 207 snaps into the hole 206 1n the disc 205. A driving connection between the spindle 53 and the arbor 180 is thus effected. The tail stock screw 172 is then rotated until the tail stock pin .17 4 enters the conical seat 183 in the end of the arbor 180.

A portion of wire is unwound from each reel and trained around the wheels 407, 413

.and 163 and is fastened to a hook 181 -secured upon the arbor shaft 181 (see Fig. 20).

The next operation is to rotate the hand wheel 231 360 in a clock-wise direction as shown by the arrow 510 in Fig. 13 and the arrow 511 in Fig. 2. While this manual operation of the hand wheel 231 is taking place the following events will take place automatically. Referring to Figs. 1 and 5 it will be seen that the teeth on the gear 226 will enga c with the paper feed pinion.

236 causing t e same to rotate in a clockwise directlon as viewed in Fig. 5. The

vdot and dash line 370 in Fig. 5.

paper will fed forward over theedge of the knife 250" until the edge of the paper strikes the wires 420 which are backwardly and upwardly inclinedgfrom the arbor 180. The position of the end of the paper at this instant is represented diagrammatically by a dot and dash line 370. Before the edge of the paper reaches the wires 420 the gear 227 will have moved sufliciently so that a portion of its tooth periphery will engage the gear 212 causing the-arbor 180 to ro-v positions of the arbor and paper guiding.

means as the diameter of the coil is increased. After a certain. movement of gear 212, the gear tooth portion of the periphery of gear 226 will be free of the paper feed pinion 236, and the feed rolls will be free to turn independently of any gearing while the arbor 180 continues to rotate further upon further rotation of the hand wheel'shaft 224 to wrap up the required number of layers of paper upon itself. At this time a mutilated portion of the gear 227 will come adjacent to the gear212 and the motion of the arbor 180 will cease. Then, as the shaft 224 continues to rotate the movable shear blade 252 will descend into cooperation with the stationary blade 250 and shear off the paper. Then while the blade 252 is ascending to normal position, another tooth portion of the gear 227 will engage with the gear 212 and Will rotate the arbor 180 in a clock-Wise direction in order to wrap up the length of paper included betweenthe arbor 1-80 and the shear blades 250 and 252. When the shaft 224 has been rotated the entire 360 the notches 235 in the cams 228 and 229 will have arrived at aposition vertically above the center of the shaft 224, whereupon withstandin ameter of t e coil being wound upon the the cam followers 257 and 258 will drop into said notches under the influence of the springs 265 and 266 and yieldingly lock the shaft 224 in home position. At thistime another multilated portion of the gear 227 will have come adjacent to the gear 212, thereby permitting the arbor to turn free of any gearing connected with thehand wheel shaft 224.

In this manner the required number of turns of paper have been wrapped about the arbor 180. Since the rotation of the arbor determines the amount of paper wrapped thereon, it is apparaent that, notthe constantly increasing diarbor, the number of turns and hence the thickness of the insulation between the several layers of wire will remain the same.

While the movements described in the foregoing paragraph have been. taking place, the gear 225 (See Fig. 3) .will have turned the gear 139 in a clock-wise direction, whereby to rotate the cam 140, 180. Let it be assumed to start with that the nut 130 occupies the position 1 30 shownin Fig. 1.

The arbor has now been prepared for wrapping on a layer of wire, and at thistime a few turns of wire have been wrapped around the insulating paper as the paper was being wrapped upon the arbor 180. The

next operation is to move the hand lever 65 previously mentioned the pulley 56 is being continuously rotated by the motor 500 through the medium of the belt 507. -The arbor 180 will then be rotated in a clockwise direction as viewed in Fig. 5. Clockwise motions as viewed in Fig. 3, will be lmpa-rted to the screw 125 by means of the gearing 102, 121, 123 and 124. The turning of screw 125 will cause the nut 130 to move from its position 130 to the full line position as shown in Fig. 1 and still further to the dotted line position 130 2 When this occurs a lug 4'40 carried by the nut 130 will engage the stop nuts 99 and cause the screw 97 to move in a direction from left to right as viewed in Fig. 1. The screw 97 will at the same time impart motion to the lever 93 causing it to rotate in a counter-clock Jwise direction as viewed in Fig. 1. From the lever 93' motion will be imparted through the shaft 91, the arm 90, the lever 80, and the link 83 to the lever 60 causing" said lever 60 to rotate in a clock-wise direction as viewed in Fig. 4. When this occurs the clutch members 56 and 54 will 'be disengaged and the arbor 180 will cease wheels 163 through the rod 133, cross bar 156 and guide wheel shaft 160. The arbor is now ready for the application of the insulating paper.

Since the arbor 180 has been stopped automatically in the manner described the handlever 65 may be released since its presence in. the position as shown in Fig. 4 will not cause the arbor to rotate any further un-

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