US2297950A - Filament mounting machine - Google Patents

Description

Oct. 6, 1942-. FLAWS, JR 2,297,950

FILAMENT MOUNTING MACHINE l1 Sheets-Sheet 1 Filed July 24, 1940 lnvencor'a Jo n Flaws, J17,

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Dot. 6, 1942. J ws, JR 2,297,950

FILAMENT MOUNTING MACHINE Filed July 24, 1940 ll Sheets-Sheet 3 Fig. 6. 6

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Oct. 6, 1942. .J. FLAWS, JR

FILAMENT MOUNTING MACHINE l1 Sheets-Sheet 4 Filed July 24, 1940 John FLaW's,Jr-.,

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Oct. 6, 1942. 1 ws, JR 2,297,950

' FILAMENT MOUNTING MACHINE Filed July 24, 1940 11 Sheets-Sheet 5 Inventor: John Flaws, J11,

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J FLAWS. J R FILAMENT MOUNTING MACHINE Oct. 6, 1942.

11 Sheets-Sheet 6 Filed July 24, 1940 Inventor: John Ftaws, J11,

His Attorney.

- Oct. 6, 1942.

J. FLAWS, JR

FILAMENT MOUNTING MACHINE 11 Sheets-Shee t 8 Filed July 24, 1940 n F n .ww r nMm/ T 8?.. 1 wh .S .lknW/W UJ b.

0st. 6, 1942.. J. FLAws, JR

FILAMENT MOUNTING MACHINE 11 Sheets-Sheet 9 Filed July 24, 1940 .7 $5 3 m... -GS n v M w 3 w. m n n@ M .5

. M u H E? 49 m 0 m w M fl V a 9 z .9 m I I d u a m w Oct. 6, 1942. J. FLAWS, JR

FILAMENT MOUNTING MACHINE Filed July 24, 1940 11 ShetS-ShGBt l 0 M. An NJ 6 7 a a a a His AHOY-r58 Patented Oct. 6, 1942 UNITED STATES PATENT OFFICE John Flaws, In, East Cleveland, Ohio, assignor to- General Electric Company, a corporation of New York Application July 24,

27 Claims.

My invention relates to the manufacture of filament mounts for electric incandescent lamps and similar devices, and more particularly to automatic apparatus for reshaping and repositioning the lead wires of such devices and mounting filaments thereon. Still more particularly, my invention relates to apparatus for automatically mounting a filament accurately in predetermined relation to a reflector constituting part of the lamp or similar device, the apparatus also preferably including means for testing the reflector to determine its light redirecting properties and the optimum location for said filament.

Heretofore, some diificulty had been experienced in maintaining accuracy in the manufacture of electric lamps in general, and lamps having an integral reflector in particular. Accuracy in manufacture is, of course, very desirable since the proper control of the light emitted by such lamps depends on the accurate location of the light source. The inaccuracies encountered heretofore were due both to the mount making operation and to various inaccuracies in the vitreous portions of the lamps which are the basic means of supporting the filament. To nullify these inaccuracies special base constructions or adjustable mountings had to be used to compensate for the variations in the lamp.

One object of my invention is to provide mountmaking apparatus which operates with positiveness and accuracy to eliminate possible errors which might be caused ,by looseness in the mounting apparatus due to the working freedom or wearing of portions of said apparatus, and by distortion of portions of said apparatus or the lamp parts due to operating strains. To eliminate these errors and accomplish this object, the mount-making apparatus comprising my invention is operated hydraulically and is divided into self-contained devices separated from the main body of the apparatus. Such apparatus is also constructed and arranged so that no pressure is exerted on the lead wires or other lamp parts vgiich could cause displacement thereof.

Anot er object of my invention is to provide apparatus for accurately locating the lamp parts introduced into the mounting apparatus with respect to various devices thereon so that the mount is constructed thereon at the location desired. Some variations are allowable in the lamp parts on which the mount is developed providing said parts are located in the mounting apparatus with respect to the same reference portions of said parts which are used to establish the position of the lamp and light source in 1940, Serial No. 347,242

illuminating apparatus in which the lamp is subsequently to be used. The parts of the lamp from which the reference points are taken may be the vitreous body supporting the leads and may be the cup or reflector section of the bulb of the particular lamp disclosed in the United States Patent No. 2,148,314 to D. K. Wright. The

desired means of causing these parts to be positioned correctly with respect to the various mount-making devices is to have all of such or position.

A carrier is preferably provided to advance the lamp parts into operative relation to the difierent mount-making devices which are located at a plurality of stations, and the rigidity of the carrier is depended upon to maintain the position of the lamp parts once they are properly positioned thereon. When the vitreous body supporting the leads to which the filament is to be attached is in the form of the reflector section or cup of the bulb, as disclosed in the Wright patent hereinbefore referred to, the method and apparatus disclosed by E. J. Westerlund in his application Serial No. 291,722, filed August 24, 1939, is preferably used to ascertain the focus of the reflector, and said reflector section or cup is positioned on the carrier with reference thereto.

Another object of my invention is to provide mount-making apparatus for bending and positioning the leads supported by the vitreous body to a definite location regardless of any variations in the original position thereof. Such apparatus assists in eliminating errors in mounting the filament and also eliminates any damage to the vitreous body holding the leads.

Another object of my invention is to provide apparatus for reshaping the ends of the leads and attaching the ends of the filament thereto to provide a strong mechanical and electrical connection therebetween. Another object of my invention is to provide apparatus for definitely controlling the position of the filament in the mounting apparatus at all times and for bringing said filament into the correct mounting relation to the leads and the vitreous body.

Further objects, features and advantages of my invention will appear from the following detailed description of a species thereof which is particularly adapted to form the filament mount for the reflector type lamp disclosed in the Wright Patent No. 2,148,314 hereinbefore referred to. In that instance, the leads are arranged in a definite manner at the center of a preformed vitreous cup having a reflecting coating on the inner surface thereof, and the embodiment of my invention herein specifically illustrated automatically reshapes the ends of the leads and mounts two filaments thereon at specific locations with respect to the reflector formed by the said coating.

In the drawings, Fig. 1 is a plan view of a machine embodying mount-making apparatus comprising my invention which, as shown, is arranged about the work stations A to H and J to K, inclusive; Fig. 2 is a perspective view on a large scale of the filament mount manufactured by the machine disclosed; Fig. 3 is a perspective view of the under side of the preformed vitreous cup on which the filament mount is developed; Fig. 4 is a vertical section through station B and the half of said machine along line 4-4 in Fig. 1 showing the focusfinding device and cup positioning apparatus thereat; Fig. 5 is a perspective view of one of the heads of the machine from which portions thereof have been broken; Fig. 6 is a front elevation of the lead-positioning means and the focus-finding device at station B; Fig. 7 is a perspective view of one portion of the leadpositioning means on a larger scale and in operative relation to the leads;'Fig. 8 is a perspective view of photo-cells employed in the focus-finding device and a portion of the supporting means therefor on a larger scale; Fig. 9 is a piping and wiring diagram of the hydraulic and electrical operating means respectively for the entire machine, the cams on shaft 81 being shown widely spaced for clearance although they are actually close together as shown in Fig. 4; Fig. 10 is a perspective view of one of the locking devices at stations Cand D; Fig. 11 is a perspective view of the lead-prelocating and bending device located at station C; Figs. 12 and 13 are side and bottom views respectively of the lower portion of said device on a larger scale; Fig. 14 is a perspective view of the bending device located at station D; Figs. 15 and 16 are side and bottom views respectively of the lower portion of said device with portions broken away to show underlying parts; Figs. 17 and 18 are perspective and side views of the lower portion of the lead-trimming device located at station E; Fig. 18' is a rear perspective view of a slide portion of the trimming device; Fig. 19 is a side elevation of a device located at station F for grooving the ends of the leads 31 and 38 to form pockets therein for receiving the ends of a filament; Fig. 20 is similar side elevation of the lower end of said device with portions broken therefrom to show squeezing jaws and associated means; Fig. 21 is a plan view looking upward and on a larger scale of the lower end of said device; Fig. 21 is a perspective view of lead wire positioning means; Fig. 22 is a perspective view of a control arm of a swaging or hammering means and a feeler arm for the cup at station G; Fig. 23 is a plan view looking upward of a portion of the grooving device at station G; Fig. 24 is a perspective view of a filament feeding turret, a filament transferring device and a groove clamping device located adjacent station H; Fig. 25 is a perspective view. on an enlarged scale, of a portion of the feeding turret including one of the filament holders and a a filament spaced therefrom; Fig. 26 is a side elevation of supporting and indexing means for the filament feeding turret; Fig. 27 is a perspective view of the transfer device with numerous sections broken therefrom to show all portions of the device more clearly; Figs. 28 and 29 are enlarged perspective and side views of laws of the transfer device; Fig. 30 is a section through the transfer jaws along the line 58-40 of Fig. 28 and Fig. 29 in the direction indicated; Figs. 31 and 32 are side elevations at 90 to each other of the lower end of the clamping device at station H; and Fig. 33 is a plan view looking upward of said device on a larger scale; Fig. 34 is a similar plan view on a still larger scale of clamping dies of the corresponding clamping device at station J; and Fig. 34' is a perspective view of control mechanism for the clamping device.

The first act necessary to the operation of the mount making machine shown in the drawings is the insertion of a vitreous cup or body 35 supporting a plurality of leads 35, 31, 38 and 59 (Figs. 1 and 2) into the head 4|! of said machine located at station A. The vitreous cup 35 shown is in the form of the reflector section of an incandescent lamp of the type disclosed in the Wright Patent No. 2,148,314 previously referred to, in that it is provided with a reflective coating 4|, preferably a deposit of aluminum, on the inner surface and supports the leads 86 to 89, inclusive, on posts 42 extending through openings therein and. attached to metal thimbles 43 sealed thereto. The metal thimbles '43 are arranged about the vitreous exhaust tube 44 which is sealed to the center of the vitreous cup 35 as shown in Fig. 3 and bear a general relationship to three sets of two low lugs or protuberances 45 and definite angular relationship to a single larger lug or protuberance 45 between the low lugs 45 of each set. The lugs 45 and 48 are located on the under-side of the rim 41 of said vitreous cup 35 and are integral therewith.

The motion of inserting the cup into the head 49 of the machine consists in moving said cup 35 down under the positioning means 45 and over onto the stationary holder 49 shown in Figs. 4 and 5. At; this time, the movable holder 55 is much lower than shown in the drawings and the cup 55 is lowered until the rim 4! thereof rests directly on the stationary holder 49. The cup 85 must also be orientated at this time until the lead 35 is at the operatorsleft, lead 81 is at the opposite side of said cup 35 from said operator and the leads 38 and 99, which extend from a common post 42, are at said operator's right. When correctly orientated, one of the larger lugs 46 falls into the opening formed by the lips 5| on the plate 52 on the outer surface of the stationary holder 49 and prevents any further rotative motion thereof. Should the cup 35 be off center when inserted the more angular sides thereof ,will engage the edge of the stationary holder 49 and said cup 85 will be shifted to the correct position. The stationary holder 49 is mounted on two correspondingly positioned studs 55 at opposite sides thereof which extend upward from the circular plate 54 which in turn provides vertical slide ways for the spindle 55 supporting the movable holder 50. The circular plate 54, in turn, is mounted on the turret 58 which provides an extremely rigid support for the parts of the head 40 in that it is mounted on the large hollow center post 5'! of the frame (not shown) of the machine by means of the ball bearings 58 and 59. The frame is a large solid unit under the turret 55 and provides the support for the entire machine, and the holder 55 and spindle 55, in particular, through indirect support of the track 68 which is engaged by the roller 6i on the lower end of said spindle 55.

Lateral stability of the head 48 and, accordingly, of the turret 56, depends upon the indexing means engaging the turret 56 and advancing the heads 48 into operative relation to the various work devices at the different stations about said turret 56. Each head 48 is represented by a single tapered roller 62, like those shown in Fig. 4, which is mounted on a pin 63 extending from the ring 64 attached to. said turret 56 and, between indexing movements, is held at a very deflnite position by a portion of the cam 65 located between two of such rollers 62 (Fig. 9). During rest periods of the head 48, a uniformly shaped portion 66 of the cam 65, which is mounted on the main drive shaft 61, passes between the rollare 62 as said cam 65 rotates but, during indexing periods, the curved channel 68 in said cam 65 is moved over one of the rollers 62 and advances it into the prior location of the other roller. All movement of the rollers 62 and, therefore, of the heads 68, is directly under the control of the cam 65. and no misplacement cf the head 48 can exist at any time.

The stationary holder 49 supports the cup 35 tioned slide 8| which is located about V-shaped I and accordingly a spring finger 81 is mounted on at a temporary position from which it is transferred during the movement of the head 48 from station A to B by an upward movement of the movable holder 58. In moving from station A to B, the roller 6| on the end of the spindle 55 is carried up an inclined portion (not shown) of the track 68 which lifts said spindle 55 so that the rollers 69 on the holder 58 engage the cup 35 and carry it upward.

The rollers 69 are-mounted in three equidistantly spaced fingers on a floating portion 18 of said holder 58 resting on an equal number of springs 1I carried by the main portion 12 thereof which moves upward to a fixed height regardless of conditions. Screws 1| extending through the springs H and openings in the main portion 12 of said holder 58 from the floating portion 18 keep said movable portion in place when the cup 35 is not contacted.

The upward motion of the cup 35 first carries the edge thereof into contact with the leveling ring 13 which moves upward therewith and finally brings the reflector II on the inner surface of said cup 35 'against the three equidistantly spaced rollers 14 of the centering and positioning means. As the top surface of the edge of the cup 35 is formed by pressure from the same die which forms the inner surface of said cup 35, the

leveling ring 13 accurately defines the position taken by the reflecting surface II. The leveling ring 13 is kept in place by a vertically positioned slide 15 (Figs. 4 and 5) which is located about vert cal guide ways at opposite sides of the upwardly extending portion 16 of the bracket 11 which carry the ball bearings 18. The weight of the leveling ring 13 and slide 15 offers sufficient resistance to the upward movement of the cup 35 to cause it to tip until the rim 41 thereof engages all portions of the leveling ring 13 and, together with the slight friction produced in moving, is not so powerful as to hinder its upward movement appreciably. The rollers 14 arefastened to arms 19 extending from the bracket 88 encircling the leveling ring 13 and are held at exact positions in a plane parallel to said .ring 13 and at the same distance from the vertical axis through the apparatus at this station, although said bracket 88 is movable vertically. As shown,

said bracket 88 is mounted on a vertically posithe leveling ring 13 as shown in Figs. 4 and 5 which presses against the side of either the depression or a protuberance in one portion of the rim 41 at a definite angular relation to the leads 36, 31, 38 and 39. To position the cup 35 properly against the end of the spring finger 81 requires that said cup be turned manually.

All portions of the head 48 are now functioning and all further operations occurring at station B are those performed by apparatus permanently mounted at that station. Such apparatus consists of the lead positioning means 89 shown in Figs. 4, 6 and '7 and the focus finding and cup repositioning apparatus 98 and 9| respectively of Fig. 4. The lead positioning means 89 serves to roughly position each of the leads 36, 31, 38 and 39 so that they are within the range of operations of other apparatus of the machine and is operated in combination with the focus finding apparatus 98. Both the lead positioning means 99 and the focus finding apparatus 98 are located above the plane of the indexing movement of the head 48 and are lowered into operative relation to the cup 35 therein by a downward motion of the slide 92 on which they are mounted. The slide 92 as shown in Figs. 4 and 6 is located in ways in a bracket 93 mounted at a fixed position on the'table 94 which, in turn, is mounted on the rigid center post 51 of the frame of the machine and during its move ment carries the block 95 which is attached thereto by bar 96 down onto the ends of the leads 36, 31, 38 and 39. Conical openings 91 are provided in the bottom of the block 95 in the areas within which the leads 36, 31, 38 and 39 fall and the full motion of said block 95 causes the ends of said leads to be gathered up and directed through the smaller portions of said openings 91 which position them. The ends of the leads 36, 31, 38 and 39 also enter the wadding 98 which is within the chamber 99 in the top of the block 95 and which distributes a lubricant over the surface thereof and pass into openings I88 in the cover plate I8'I over said chamber 99. During the normal operation of the machine the lubricant is used up at a uniform rate and is automatically replenished from the supply held by the cup I82 which releases said lubricant at a given rate to the pipe I83 conducting it to said chamber 99. The cup I82 is. mounted on the slide 92 and therefore remains at a fixed lower end of said apparatus. In instances when the head 48 is permitted to enter a second cycle of operations with the cup 35 operated on during the previous cycle, the filament mount thereof will be struck by the plate I84 and be pressed down out of position so that it may not strike other parts of the machine.

The focus finding apparatus 30 is provided to ascertain the proper position in the cup 35 for 1 the light sources and operates in combination with suitable repositioning apparatus 9| which adjusts the cup 35 vertically in the head 40 so that it assumes the correct relation to thedevices at the other stations when indexed thereto. In this particular instance, the focus flnding apparatus 90 is of the general type disclosed in Westerlund application Serial No. 291,722, filed August 24, 1939, and comprises the two photocells I05 and I06 (Figs. 6 and 8) which are mounted on the lower end of the spindle I 01 carried by the extending arm I of slide 32. The photo-cells I and I06 are made by cutting, at I03, the photo sensitive layers on a single metal strip I I0 which serves both to connect them in series electrically and to hold them in place. Other electrical connections are made to said photo-cells I05 and I06 through the shoes I below the screws II2 carried by the two straps ||3 encircling the metal strip 0 and the spindle I01 and the wires H4 and H5 which are soldered to the back of said straps H3 and which extend upward through a central passage in said spindle I01. The straps 3 are separated from the spindle I01 by the bushings IIO of insulating material and are connected to the galvanometer 6 (Fig. 1) on a table III adjacent an operator. The spindle I01 is clamped to the arm I00 of the slide 92 by the nuts II9-II3 and is orientated so that the photo-cells I05 and I06 face away from the center of the machine and the separation I09 therebetween is within the cup 35 and at a definite relation to the working plane of all mounting apparatus of the machine when said slide 92 is all the way down and the shoulder I rests on bracket 33.

The downward movement of the slide 92, which brings about the above described movements of the lead positioning means 09 and focus finding apparatus 90, is produced by self contained means within the apparatus at this station which is operated hydraulically from a source of oil at constant pressure. Such actuating means separates all strains of operation from the structure of the machine and allows maximum freedom of control. As shown, a movable cylinder |2I is attached to the slide 92 by the pin I22 and the stationary piston I23 working within said cylinder |2| is attached to a rod I24 extending up through the end I25 thereof to the cross bar I26 which joins two posts I21 extending upward from the bracket 93. The oil which forces the cylinder I2I and slide 92 down enters said cylinder I2| through the longitudinal passage I20 in the rod I24 which is fed by piping I29 leading to the control valve I30 as shown in Fig. 9. Oil must also escape from above the piston I23 and does so through the passage I3| in said piston I23 and rod I24 and returns to the control valve I30 through the piping I32. The timing of the operation of the hydraulic means depends on the operation of the control valve I 30 which is mounted on the frame in such a position as to allow the cam I33 on the main cam shaft 61 to engage the roller I34 and move the valving pin I35 thereof. The high pressure oil connection is made to the valve I30 at I30 and the draining oil is taken therefrom at I31 and allowed to flow into a storage tank not shown in combination with the machine from which it is automatically returned to the high pressure aaemso lines.-- n a very important that all oil be. kept from the lamp parts and means are provided in trough I30 for, catching any of such oil leaking f out of the head of said cylinder. |2I about the rod I24. This point is the only possible source of leakage and is drained through the pipe I30 which is attached to the cylinder end I25 and e which telescopes the larger drain pipe I40 leading to the storage tank.

The function of the photo-cells I05 and I00 is the generate electrical currents proportionate to the amounts of light received from the reflector 4| of the cup 30 so that said currents indicate whether said cup 35 should be raised or lowered to cause the reflector 4| to be properly positioned with respect to the working plane of the mounting apparatus. Ordinarily both photo-cells I05 and I06 receive equal amounts of light when the cup 35 and reflector 4| are correctly positioned. The light is that emitted by a source I mounted directly over the cup 35 at a higher position than shown and redirected by the half of the reflector 4| on the outer side of the machine which faces said photo-cells I05 and I06. The light source I in this instance is mounted on a very rigid structure carried by the posts I 42 extending from the table 34 of the machine and directs the light downward in parallel rays which are redirected by all portions of the reflector 4| in a like manner. It is not necessary that the photocells I05 and I06 scan the entire reflector 4| as the method of manufacture of the cup 35 and said reflector 4| causes all variations affecting the length of focus thereof to occur in equal amounts in all side sections thereof. Should one of the photo-cells I05 and I06 be receiving more light than the other, the greater current generated thereby deflects the pointer of the galvanometer 6 (Fig. 1) to one side indicating that the cup 35 must be adjusted vertically. The direction of the deflection of the pointer indicates the direction the adjustment must take and the operator turns the crank I43 of the positioning apparatus until the pointer is brought to the center location. The crank I43 is mounted below the table III on the end of a flexible shaft I44 connecting it to the worm gear I45 and, when turned, rotates the gear I46, the shaft I41 and the screw 63 which is connected thereto through the inter-meshing gears I40 and I49 at this time. The shaft I41 is keyed to the gear I 46 and is slideable in said gear I46 and the bracket I50 in order that it can be raised to separate gear I40 from gear I49 during the indexing period. During the operating period, the shaft I41 is positioned by the collar |5I thereon which rests on the cover I52 over the gear chamber in the bracket I50, and at other times the slide 92 of the focus finding apparatus is in the up position and the arm I53 thereof is in engagement with the nuts I64 and the shaft I41 is held in the raised position shown. Following the positioning operation, the valve I30 is adjusted and the cylinder |2| and slide 92 are raised to the up position.

The indexing movement of the turret 56 carrying the head 40 from station B takes it to station C where the floating portion 10 of the holder 50 now supporting the cup 35 is immediately locked in place. The purpose of this locking operation is to block all action of the springs II which separate the floating and stationary portions I0 and I2 respectively of the holder 50 so that the cup 35 cannot be moved from engagement with operations of other apparatus at this station. The locking device I55 as shown in Figs. 1 and 10 consists of two spaced wedges I56-I-56 which are mounted on the bracket I51 on the outer end of a rod I58 extendingfrom the cylinder I59 and is operated by movement of a piston within said cylinder I59 which is attached toothe rod I58 and which moves said wedges I56I66 into position between the rollers I60 and I6I (Fig. 5) at opposite sides of the floating and stationary portions and 12 respectively of the holder 50. The motion of the wedges I'56I56 is caused by the entrance of compressed air into the head of the cylinder I59 from the pipe I62 and stops when said wedges I56-I56 are tightly squeezed in-betweenthe rollers I60 and I6I. The cylinder I59 is mounted on the bracket I63 extending from the frame of the machine below the turret 56 and discharges air from behind the piston through the pipe I64. Both pipes I62 and I64 as shown in Fig. 9 are also connected to a four way valve I65 which is connected to the source of compressed air (not shown) through the pipe I66 and which discharges air through the port I61. At this time, the valving pin I68 is adjusted by the cam I69 on the shaft 61 so that pipe I62 receives compressed air from pipe I66 and the air being discharged through pipe I64 is opened to the atmosphere through port I61. A rod I10 extending from the bracket I63 parallel to rod I58 passes through an opening in bracket I51 and keeps said bracket I51 and the wedges I56I-56 from turning out of position when said wedges are not engaged with the rollers I60 and I6I. To prevent the wedges I56-I 56 from being forced in-between the rollers I60 and I6I too tightly and causing difficulty in withdrawing them, a spring I1I is mounted on the rod I10 behind the collar I12 thereon which engages and resists the bracket I 51 at the latter part of its movement. The wedges I56--I56 are pivoted on pins I13 carried by the bracket I51 and are under the influence of springs I14 about the upper end of said pins I13 which turn them so that the stop screws "'5 on each are pressed against the bracket I51. If the wedges I56--I56 should resist withdrawal from between the rollers I60 and I6I at the end of the cycle of operations of the apparatus at this station, the indexing motion of the head 40 which follows will only turn them about the pins I13 and no broken parts will result.

Following the locking of the holder 50 at station C, the leads 36, 38 and 39 are relocated and lead 31 is reformed by the bending device shown in Figs. 1, 11, 12 and 13. The relocating f the leads 36, 38 and 39 is performed by the die I16 which is attached to the slide I11 having rib or flange portions I11 which slide in the ways of the bracket I18 on the table '94 opposite this station (C) and is brought about by the downward movement thereof from a position above the path of travel of the head parts. At the time of operation, oil at pressure is introduced into the cylinder I19 below the piston therein and said cylinder I19 which is connected to the slide I11 through the plates I80, the springs I8I at opposite sides thereof and the plate I82, moves down with said slide I11. The cylinder I19 is also connected to the sub-slide I83 within the ways of the slide I11 by the pin I84 and the expansion force of the.

springs I8I keeps the cam I85 on the sub-slide I83 against the cover plate I86 over the ways therein so that no relative movement occurs between the slide I11 and sub-slide I83 at this time. The springs I8I are kept in proper alignment by posts I81 attached to the plates I and extending through openings in the plate I82. The downward movement of the slide "1 lowers the die I16 onto the upper ends of the leads 36, 38 and 39 which are directed into the passages I88, I89 and I90 respectively therein by the conical lower portions thereof. In this particular instance, lead 36 is bent so as to take a vertical position of an inch outward from the machine from its former position and the leads 38 and 39 are bent so as to be nearer each other and take vertical positions inward toward the center of the machine from their supporting post 42. The downward movement of the slide I11 ends when the lower end of the screw I9I butts against the top surface I18 of bracket I18, although the cylinder I19 continues to move and moves the subslide I83 within its ways therein. The manner in which said screw I9I engages the bracket I18 may be better understood by reference to a similar arrangement shown in Fig. 24 where the screw 528 on slide 502 engages the topof bracket 503 to end downward movement of said slide 502.

During the separate movement of the subslide I83, the springs I8I' are further compressed and cam I85 is lowered so that the tapered anvil I92 moves into position beside the lead 31 and the tool or wiper I93 swings down thereagainst to the positions shown in Figs. 12 and 13. The anvil I92 is mounted on the yoke I94 which is pivotally mounted on the pin I95 carried by slide I11 and swings down into position when the finger I96 which is attached to the cam I85 is lowered thereby. Since some variations occur in the position of the lead 31 in the different cups 35 introduced into the head 40, the anvil I92 which gradually increases in width moves in from the side until it is actually in contact with said lead 31 no matter what its position may be. The wiper I93 is pivotallymounted on the pin I91 extending from the slide I11 and is caused to swing over against the lead 31 by a corresponding movement of the block I98 which is also mounted on said pin I91 and which engages said wiper I93 through the spring I99. The spring I99 is located in a well in the block I98 and normally keeps the wiper I93 turned so that a heel 200 (Fig. 13) thereof rests against a portion of the block I98. The downward movement of the cam I85 also actuates the block I98 and therefore the wiper I93 as said movement carries the roller 20I on the upper end of the lever 202 into the sideward deflected portion of the cam slot 203 in said cam I85 and turns said lever 202 about the pin 204 extending from the slide I11. The lower end of the lever 202 in turn engages the pin 205 extending from the block I98 and turns it so that the lead 31 is bent over the anvil I92 as shown. During the bending operation, the end of the lead 31 falls against the side of the die I16 and into the groove therein and is bent both sideward toward lead 36 and upward to a vertical position. At the limit of motion, the spring I99 between the wiper I93 and the block I98 is further compressed in taking up the excessive motion of the latter.

The cylinder I19 corresponds to similar operating means at the other stations and is moved by the inflow of oil behind a piston (not shown) therein which is attached to the rod 201 mounted on the cross bar 208 extending between the upper ends of the posts 209. As in the other instances, the posts 209 are carried by the bracket I18 mounted on the table 94 and separate-all openating strains from the machine proper and the oil is conducted to and from the chambers above and below the piston by passages in the rod 231. At the start of the operating period, oil at pressure is introduced into the lower chamber through the pipes 213 and 129 which, as shown in Fig. 9, connect the rod 231 to the valve 133 and oil is discharged from the upper chamber through pipes 211 and 132 which connect said rod 231 to said control valve 133. Any leakage of oil is caught in the trough 212 in the head 213 of the cylinder 119 and is drained back to the source of supply (not shown) through pipe 213. No other operations are performed by the apparatus at this (C) station and said apparatus is returned to its earlier position by the adjustment of the control valve 133 by the cam 133. The oil under pressure then passes through pipe 211 and into the upper chamber in the cylinder 119 whereas the oil in the lower chamber is drained through pipe 213. The sub-slide 133, first, moves up to its prior relation to the slide 111 whereupon boththe sub-slide I33 and slide 111 are moved upward as a unit. These operations cause the relocating and reshaping apparatus to disengage itself from the leads 33, 31, 33 and 39 without disturbing them in any way. The locking device 155 is also separated from the holder 53 of the head 43 at this time by an adjustment to the valve 155 (Fig. 9) which directs compressed air into the space behind the piston in the cylinder 159 through pipe 134 and allows the air on the opposite side of said piston to escape through pipe 152 and port 151.

An index of the turret 55 now occurs and the head 43 is carried to station D, the next in line,

and into operative relation to a second .lockingdevice 215 and the final lead bending device 215. The locking device 215 is an exact duplicate of the device 155 located at station C and shown in detail in Fig. 10 and being connected to the valve 155 by the pipes 211-192 and 213-154 is operated in exactly the same manner. The lead bending device 213 on the other hand reforms the leads 33, 33 and 39 and, as shown in detail in Figs. 14, 15 and 16, correspond to the other devices only in that it is operated hydraulically through movement of the cylinder 219 and is supported entirely by a single bracket 223 mounted on the table 94 of the machine. The parts of the bending device 215 are first positioned in operative relation to the leads 35, 31, 33 and 39 by a downward movement of the cylinder 219 and the slide 221 which moves in ways in the bracket 223 and which receives its motion from the cylinder 213 through the plates 222 and the springs 223 on opposite sides thereof and the plate 224 attached to said slide 221. During the downward movement, the slide 221 carries the die 225 attached to the lower end thereof over the upright end of the lead 31 which passes up the V notch and opening 225 therein and a stop screw (not shown) on the plate 224 is carried against the bracket 223 which terminates the motion of said slide 22 I. The cylinder 219, however, continues to move and further compresses the springs 223 and shifts the subslide 221 to which it is connected by the pin 223 (Fig. 14) in the ways of the slide 221 in which it is located. Until this time the expansion force of the springs 223 has kept sub-slide 221 pulled upward so that the cam 229 thereon butts against the cover plate 233 over said sub-slide 221 but now said motion moves said cam 223 so that the anvil 231 drops into position between the leads 35 and 33-39 and so that the wipers 232 and 233 bend said leads 33, 33 and 33. The anvil 231 is attached to the yoke 234 which is pivotally mounted on the pin 233 extending through the lower part of the slide 221 and swings into place by its own weight when permitted by the link 233 connecting said yoke 234 to the bracket 231 on the cam 223. The position of the leads 33 and 33-33 vary somewhat in different cups 35 and the tapered end of the anvil 231 as shown in dotted lines in Fig. 16 must move until all space therebetween is filled by said anvil 231 and may cause the yoke 234 to shift longitudinally on the pin 235 until both sides of said anvil 231 are against said leads 33 and 33-33. Further movement of the cam 229 drops the wedges 233-239 (Figs.

14 and 15) which are similar in construction and are located on opposite sides of the slide 221 and which project over the cam 229 at 243, in-between said slide 221 and the yoke 234 so that the anvil 231 cannot shift sideward hereafter. Still further movement of the cam 223 carries the rollers 241-241 into the angular portion of the cam slots 242-242 and causes the levers 243-243 on which said rollers 241-241 are mounted to swing the blocks 244-245 and tools or wipers 232 and 233 respectively against the leads 33 and 38-39 respectively. The levers 243-243 are mounted on pins 245-243' extending from the slide 221 and engage the pins 241-241 respectively extending from the blocks 244 and 245 respectively which turn about the pins 243 and 248 extending from the slide 221. The wiper 232 is separated from block 244 by the spring 249 which is largely contained within a well therein and, in turning, causes the lead 33 to be bent to a horizontal position over the anvil 231 and an end-most portion thereof to fall into a groove in the die 225 and be bent to a vertical position. The wiper 233 is separated from block 245 by the spring 250 which is largely contained in a well therein and, in turning, causes both leads 38 and 39 to be bent to a horizontal position over the anvil 231 and an 'end portion of each to be carried into separate grooves in the die 225 and to be bent at two differently situated points to a vertical position. Slight notches at the edges of the blocks 244 and 245 and the wipers 232 and 233 assist these parts to bend the leads in the proper manner. A bar 251 joins the pins 243 and 243' and stiffens the mounting for the wipers 232 and 233 which are kept from swinging away from the blocks 244 and 245 under the influence of the springs 243 and 253 respectively during rest periods of the device by heel portions thereof (not shown) engaging said blocks 244 and 245. No further downward movement of the slide 221 and cam 229 occurs and cylinder 219 is caused to return upward to its former position to separate the bending device 215 from the leads 39, 31, 33 and 39 and complete the cycle of operation thereof. The return movement of the parts of the device occurs in exactly the reverse order to the prior movements thereof and swings the blocks 2,44 and 245 outward until they rest against the fingers 252 and 252' on the side of the slide 221.

During the first part of the cycle of operation a since the former is attachedto the cross bar 256 extending between the posts 251 carried by the bracket 226. The return motion of the cylinder 2I9 is brought about by a reversal of the oil connections thereto caused by the readjustment of the valve I36. As in prior instances, the leakageabout the rod 254 is caught in a trough 256 in the upper head 259 of the cylinder 2I9 and is returned to the storage tank through pipe 266. The plate 26I on the head 259 engages one of the side rods 251 which functions as a guide to hold the upper end of the cylinder 2I9 in alignment, with the other apparatus of the bending device 2I6. Before the head 46 and cup 35 are indexed to the next station, the locking device 2I5 is separated from the holder 56 by the readjustment of the valve I65.

Station E is the next station taken by the head 46 in its "next regular index and is occupied by the trimming device 262 (Figs. 1, 1'1 and 18) which cuts all of the leads 36, 31, 38 and 39 to length. In this instance, the die 263 is carried down over the upper ends of the leads 36, 31, 38 and 39 which pass up into apertures therein and the cutting die 264 is moved sideward in a manner cutting the ends thereof protruding through said die 263. The die 263 is attached to the lower end of the slide 265 and through the cover plate 266, spring 261 and the sub-slide 268 to the cylinder 269 which corresponds to the cylinder of the operating apparatus of the other devices already described. As in such devices, the cylinder 269 is moved with respect to a piston indirectly supported on the posts 216 extending up ward from the bracket 2H and is under the control of the valve I36 as shown in Fig. 9 which directs the flow of oil at pressure thereto. The oil flows to the cylinder 269 through pipes 212 and I29 and is drained therefrom through pipes 213 and I32 at this time. The slide 265 is located in ways of the bracket 21I which is mounted at a fixed position on the table 9.4 of the machine and is moved downward by a similar motion of the cylinder 269 because the tension in the spring 261, which extends between a post in the sub-slide 268 and the cover plate 266 over the ways therefor in said slide 265, keeps the shoulder 214 of said sub-slide 268 against a portion of said slide 265. The die 263 is properly positioned over the ends of the leads 36, 31, 38 and 39 when a stop screw 215 in the back of the slide 265 butts against the bracket 2" and terminates the movement of said slide 265. Further movement of the cylinder 269 carries the sub-slide 268 down alone and the angular cam surface 216 thereof against the roller 211 on the lever 216 which is caused to move the cutting die 264 along the surface of the die 263 and The return upward movement of the slide 265 and sub-slide 266 now occurs and cutting die 264, die 263 and gate 262 are returned to their former position in order. The cutting die 264 is normally pulled back by the return motion of the lever 218 produced by the uncoiling force of the spring 261 when the sub-slide 268 is moved but may not move until the upward motion of the slide 265 carries the roller 211 on said lever 218 against the cam 266 carried by the bracket 21I. The spring 281 is coiled around the pin 219 and engages the bracket 266 and a post extending from the lever 216. The return movement of die 263 is necessarily that of the slide 265 which also carries the gate 262 upward until the pipe 265 reaches the vend of the opening 266 therein and causes said gate 262 to shift. At such times, the open end of the ways for die 264 containing the trimmings passes into alignment with the pipe 285 and, shortly thereafter, during the indexing interval of the head 46, a stream of air is blown from the slot 289 of the second pipe 296 and said trimmings are. sucked into said pipe 285. The air producing the suction is released by the valve 29I (Fig. 1) which is mounted at a fixed position adjacent the rim of the turret 56 and is operated by the momentary engagement of the circular plate 54 of a head 46 with the control lever 292 of the valve 29I during the indexing period. The pipe 296 is connected directly to .the valve 29I and has one end, which is plugged except for slot 288, soldered in the terminus of pipe 265. The suction produced draws air in through the opening 293 above the cutting die 264, the V slot 294 therein which is now partially withdrawn from the ways in the portion 26I of slide 265 and the apertures in the die 263 and carries the trimmings into the air stream which blows them down the pipe 285 to the cage 295 (Fig. 1). The cage 295 in turn is made of wire screen and retains the trimmings but allows the air to escape.

The next station taken by the head 46 is station F and is occupied by the device 296 shown a which is the result of a movement of the slide 296', to which. said. die 291-is attached, in ways against the leads 36, 31, 38 and 39 protruding thereabove. The lever 216 is supported on a pin 219 carried by the bracket 236 which is attached to the portion 28I of the slide 265 forming the ways for the cutting die 264 and movesvsaid cutting die 264 only sufiiciently to trim the leads. During the latter part of the downward movement of the slide 265, the gate 262 which is located in ways below the plates 283 on one side thereof is shifted so that it closes the open end of the ways containing the cutting die 264 and keeps the trimmings from the leads 36, 31, 38 and 39 therein. This motion of the gate 282 results when the screw 284 engages the terminus of the pipe 285 which is located in the opening 266 in the gate 282 and which is flush with the adjacent face of the slide 265.

ofthe bracket 299 on thetable 94" of the machine a'dJacent this station. The slide 298 is connected:- I

to the cylinder 366 of the usual hydraulic operating means provided for each of the various devices of the machine through the rods 36I and springs 362 at opposite sides thereof, the pin 363. the pneumatic hammering mechanism 364 and pin 365 and like said means is moved by the flow of oil thereto from the control valve I36 (Fig. 9). The oil is received in the chamber formed by the cylinder 366 and a piston 366 therein which is attached to the rod 361 and which is held stationary as in prior instances by means including the posts 368 extending from the bracket 299. The die 291 takes the correct relation to the leads 31 and 38 when a stop screw (not shown) on the back of slide 296 is brought into engagement with the bracket 299 at which time the end of the lead 39 is contained within the opening 369 in said die 291 and the ends of the leads 31 and 36 are located in the grooves die 231 and butt against the pins 3 and 313 (Fig. 20) respectively. I

The pins 3|: and 3l3 position the leads 31 and 33 within the grooves H and 3 of the die 231 and correct any longitudinal displacement thereof and are mounted on an inwardly projecting portion 3 of the slide 3l3 (Fig. 19) which is located in the ways formed on bracket M3 by the gibs 3". The bracket 3" is attached to the outer end of the post 3" extending from the slide 293 and can be turned about said post '3" to bring the pins 3l2 and 3l3 into alignment with the grooves M0 and 3 respectively in said die 291 by turning the screw 3|9 on the arm 323 extending from said slide 233 and the screws 32l-32l abutting against said die 291. As the slide 293 and die 291 are moved into position, the screw 322 on the upper end of the slide 3" ento rest on the top of one of the rods 3M and the guide 343 comes to rest on the other of said rods 3M and is not ordinarily subject to adjustment.

gages the arm 323 on the shaft 324 and turns said shaft 324 until the arm 323 thereon strikes the stop screw 323. No further downward movement of the slide 3 and the pins 3 and 3, which are located at a definite position, can occur as the shaft 324 and the stop screw 323 are held in a fixed position by the bracket 321 which is attached to bracket'299.

The punches 323 and 329, which cooperate with the die 291 in forming the ends of the leads 31 and 33, are held by the jaws 330 and 33! respectively which are pivoted on the post 3 and are therefore brought into operative relation to said leads 31 and 33 by the downward motion of the slide 293. Further downward movement of the cylinder 300 and the pneumatic hammering mechanism 304 however occurs and causes a corresponding movement of the sub-slide 332 which is located in ways below the plate 333 in the slide 293 and which is connected to the pneumatic hammering mechanism 304 by the pin 303. The separate motion of the sub-slide 332, which is against the contracting force of the springs 332, first, lifts the positioning pins 3l2 and H3 from the grooves 3M and 3 in the die 291 and, then, causes the punches 323 and 329 to enter said grooves M0 and 3H and reshape the leads 31 and 33. At'the start of the movement of the sub-slide 332, the cam 334 which is mounted on the pins 333 and 333 extending therefrom is moved so that one edge engages the roller 331 on one arm of the lever 323 and turns said lever 323, the shaft 324 and arm 323. The am 323, in turn, moves the slide 3 upward in the ways of the now stationary bracket 3 against the If an adjustment is required as to the depth of the penetration of the punches 323 and 329 into the leads 31 and 33, the length of said punches 323 and 329 is changed by slipping shims in or out of the spac between them and the heels 343 of the Jaws 330 and 33L The punches 323 and 329 are kept from shifting sideward by the blocks :41 which are clamped thereagainst by the screws when the wedge shaped ends 349 of the punches 323 and 323'have contacted the ends of the leads 31 and 33, the pneumatic hammering mechanism 304 is brought into operation and the additional swaging or hammering action thereof is caused to force said ends 343 into the leads 31 and 33 which are displaced into the grooves 3" and 3 of the die 291. The pneumatic hammering mechanism 304 is a unit manufactured on a commercial scale by the Chicago Penumatic Tool Company of Chicago, Illinois, and is operated from an external source of compressed air. The compressed air enters the unit 304 througha flexible hose 330 connected, as shown in Fig. 9, to the valve 33i which is operated electrically by the flow of current through the solenoid 332 thereof and which is under control of the mercury switch 333 (Figs. 1, 9 and 19) mounted on one of the posts 303 adjacent the cylinder 300. When the final movement of the cylinder 300 occurs,

' the rod 334, which is mounted on the guide 343 contracting force of the spring 333 and so provides for the movement of the pins 3l2 and M3 attached thereto. The punches 323 and 329 are actuated through the jaws 333 and 33i by the wedging action of the lower end 339 of the subsllde 332 which now passes between the rollers 340-340 on the upper ends thereof. The rollers 340-343 are mounted on one end of the pins 34l-34i held by the Jaws 330 and 33] and correspond to a second pair of rollers 342-342 (Fig. 19) on the opposite ends of said pins 34l-34i. These rollers 342-342 are located in the slots 343-343 of the cam 334 which are shaped so as not to interfere with the movements of said rollers 342-342 during the downward movement of the cam 334 and the sub-slide 332. A metal strap 344 mounted on the outer ends of the pins 3 slides along the face of the cam 334 during the movements thereof and assists in keeping said cam 334 and the upper ends of the jaws 330 and 33l in proper relation to each other at all times. The movement of the cylinder carried by said cylinder 300 is moved from the arm 333 and the mercury switch 333 which is attached to the arm 333 on the opposite end of the pin 331 from the first arm 333 tips, closing the circuit to solenoid 332. The pin 331 is mounted in a block 333 clamped to one of the posts 303 which is located in a slot in the guide 343 and is turned by the eccentric position of the weight of the arms 333 and 333 when the rod 334 is withdrawn. The arm 333 does not interfere with the motion of downward or upward movements thereof and tips the mercury switch 333 to the open position when in engagement therewith. As shown in Fig. 9, both the solenoid 332 and the mercury switch 333 are preferably connected in series with a second mercury switch 339 which takes a closed position only when a cup 33 is located at this (F) station. The mercury switch 339 as shown in Figs. 1 and 19 is mounted on block 330 which is carried by the rotatable shaft 33i in the end of down away the arm 332 extending from the bracket 293 and is tilted so as to complete the circuit therethrough by movement of the ann 333 when the cup 33 is indexed against the shoe 334 on the lower end thereof. The parts of the device cooperating with the mercury switch 339 correspond to similar apparatus at a succeeding station which are shown more clearly in Fig. 22. When the cup 33 is not correctly positioned at station F, that is, when the cup 33 is not carried by the head 40, the weight of the arm 333 and the shoe 334 turns the shaft 33! until the stop screw 333 rests on the flange 333 of arm 332 and the mercury switch 339 is tilted so as to break the circuit therethrough and prevents operation of the pneumatic hammering mechanism. In many instances, the added force of the pneumatic hammering mechanism 304 is not required to cause the displacement of the leads and need not be included in the device 233. If the leads are made the rod 334 either during the,

of nickel, for instance, the hammering mechanism 304 an the control means therefore would not be required and the cylinder 388 could be connected directly to the sub-slide 332.

When the working parts have completed their cycle of operation and must be returned to their original positions, the control valve 138 is ad- Justed and the cylinder 388 moves upward. This movement of the cylinder 388 returns the parts of the device 296 in reverse order, the first movements being the separation of the punches 328 and 329 from the leads 31 and 38 whereupon the pins 312 and 313 are lowered onto the ends thereof. Both movements are the result of the upward motion of the cam 334 which carriesthe rollers 342 into a different portion of the slots 343 therein causing the jaws 338 and 331 to open and which carries the rim of said cam 334 away from the roller 331 so that arm 323 drops and the slide 315 and pins 312 and 313 are permitted to move down. The contracting force of the spring 338 which extends between posts in the bracket 316 and slide 315 produces the moving force for the latter. The leads 31 and 38 are not separated from the grooves 318 and 311 of the die 291 until it is carried upward by the motion of slide 298, at which time, the added pressure of the pins 312 and 313 on the ends thereof keeps said leads 31 and 38 from moving with said die 291. This method of operation prevents the leads 31 and 38 from being pulled out of shape should they tend to adhere to said die 291 since the pins 312 and 313 remain stationary and prevent any movement thereof until separation has occured. During the first upward movement of the die 291 and the side 298, the slide 315 moves in the bracket 316 but finally comes to rest on'the top of said bracket 316 and is carried up away from the cup 35 with said die 291 and said slide 298.

The indexing motion of the turret 56 now occurs and the cup 35 and the head 48 are carried into station G, the next in order, which is occupied by a duplicate device 361 to that (296) at station F except that leads 36 and 39 are treated thereby. As in the prior instance the parts of the device 361 are carried into operative relation to the cup 35 by a movement of a slide, in this case the slide 298 as shown in Fig. 23, which supports the die 368 and the jaws 338' and 331' carrying the punches 369 and 318 respectively. The direction of movement of the slide 298' is downward and carries the die 368 down over the end of the lead 31 which passes into the opening therein and the ends of the leads 36 and 39 which pass into the grooves 311 and 312 respectively. As before, the leads to be reshaped are positioned by pins temporarily located within the upper part of the grooves 311 and 312 and attached to an extending portion 314 of the slide 315' which in turn is located in ways on the bracket 316' formed by the gibs 311'. Subse-' quent operations of the device 361 moves the slide 315 upward withdrawing the positioning pins from the grooves 311 and 312 and closes the jaws 338 and 331' causing the punches 369 and 318 to engage the leads 36 and 39. Following these operations, the device 361 returns to its original position in the same manner and se-. quence of operations as the earlier device.

The device 361 at station G is also preferably provided with pneumatic hammering mechanism and control apparatus therefor but only the means of feeling for the cup 35 is shown separated from Fig. 1. This means appears in Fig. 22 and comprises the shoe 364 on the pivoted arm 363 which feel for the cup 35 and the mercury switch 359 which is tipped thereby and makes and breaks the control circuit. A single shaft 361' carried by the arm 362 extending from a bracket (not shown) on the table 94 supports both the arm 363' and the mercury switch 359. The actuating cylinder 388, the pneumatic hammering mechanism 384', the control mercury switches 353 and 359' and the air control valve 351' of this device 361 appears in Fig.9.

The next succeeding indexing movement carries the cup 35 and the head 48 into station H and into position before filament mounting apparatus which advances a coiled filament into proper relation to the reflecting surface 41 of the cup 35 and the leads 36 and 39 and then clamps said filament to the latter. Such apparatus corresponds to duplicate apparatus at station J, the next in line, which causes a second filament to be mounted on the leads 31 and 38 and like said apparatus is supplied with filaments by the operator seated adjacent the recess or concavity in the table 111 midway therebetween. The filaments first appear on the table 111 in a disarranged pile and are shifted about until free of each other ty tweezers in the hand of the operator who then places single filaments on the holders 314 of the turrets 315 and 316. In their regular order of movement, the turrets 315 and 316 are indexed in a counterclockwise direction and present all the holders 314 in turn to the operator who usually places filaments in a group of first one and then the other thereof. The cup repositioning apparatus at station B is also adjusted by the operator who turns the crank 143 thereof according to readings given by thegalvanometer 116, Each of the holders 314; as shown in detail in Figs. 24 and 25, has a raised center portion 311 with a groove 3'18 thereacross for positioning the coiled center portion 319 of the filament 388 and the offset slots 381 and 382 at opposite ends -of said grooves for receiving and positioning the ends of the legs 383 of said filament 388. The shoulders 384 at the inner end of the slots 381 and 382 engage the adjacent sides of the legs 383 of said filament 388 which in this particular instance are offset from the coiled portion 319 thereof at 385 and establish the position thereof. Since both turrets 315 and 316 are alike and all other apparatus at stations H and J are almost exact duplicates, all the following description is limited to the apparatus at station H but could as well be applied to that at station J.

The function of the turret 315 is to advance separate filaments to station X, the pick-up station for a separate transfer device 386 (Figs. 1 and 24), as they are needed and is brought about by indexing movements of said turret 315 in a clockwise direction which move each of the holders 314 in turn to said station. The transfer device 386 carries the filaments separately from station X to mounting relation to the leads 36 and 39 of the cup 35 at station H where the grooves therein are closed about the legs 383 of said filaments by the clamping device 381 permanently mounted thereat.

The turret 315 is fastened to a vertical shaft 388 (Figs. 24 and 26) carried by bearings within the bracket 389 and advances a holder 314 supporting a filament 388 to the pick-up station X at the moment the head 48, which carries the cup 35 in which the filament is to be mounted,

is indexed from station G. At this particular moment, the preceding head 48 on the turret

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