US2767675A - Manufacture of parabolic reflector lamps - Google Patents

Description

Oct. 23, 1956 M. E. M GOWAN MANUFACTURE OF PARABOLIC REFLECTOR LAMPS l3 Sheets-Sheet 1 Filed July 16, 1953 I Q Na mm mu n INVENTOR MEMcWWfi V.

ATTORNEY Oct. 23, 1956 M; E. M GOWAN 2,767,675

MANUFACTURE OF PARABOLIC REFLECTOR LAMPS Filed July 16, 1953 13 Sheets-Sheet 2 5.5751; INVENT j MEMc-'l/W/WV.

- A.TTORNEY Oct. 23, 1956 M. E. M GOWAN 2,767,675

MANUFACTURE OF PARABOLIC REFLECTOR LAMPS Filed July 16, 1953 13 Sheets-Sheet 3 ATTORN EY Oct. 23, 1956 M. E. MCGOWAN 2,767,675

MANUFACTURE OF PARABOLIC REFLECTOR LAMPS M. E. M GOWAN MANUFACTURE OF PARABOLIC REFLECTOR LAMPS Filed July 16, 1953 Oct. 23, 1956 13 Sheets-Sheet 5 V 4 5 4 M .r 1M1 Z. HHII w m 00 LFIRAN J r f f Z .u 9 E 5 a m. g

. INVENTOR M- E. ML-aMWfl/w BY 9 .ATT'OR-N Oct. 23, 1956 M. E. M GOWAN MANUFACTURE OF PARABOLIC REFLECTOR LAMPS Filed July 16, 1953 13 Sheets-Sheet 6 4 4 Wu J Z J H a M F H P I AfTORNEY Oct. 23, 1956 M. E. M GOWAN MANUFACTURE OF PARABOLIC REFLECTOR LAMPS Filed July 16, 1953 13 Sheets-Sheet '7 ma num lNVENTOR M. E Ma GOW/I/V. %f& 7

ATTOR Oct. 23, 1956 M. E. 'MCGOWAN 2,767,675

MANUFACTURE OF PARABOLIC REFLECTOR LAMPS Filed July 16, 1953 13 Sheets-Sheet 8 A: A u F ATTOR Oct. 23, 1956 M. E. M GOWAN 2,767,675

MANUFACTURE OF PARABOLIC REFLECTOR LAMPS 7 Filed July 16, 1953 1 l3 Sheet-Sheet 9 Oct. 23, 1956 M.- E. M GOWAN 2,767,675

MANUFACTURE QF PARABOLIC REFLECTOR LAMPS Filed July 16, 1953' 13 Sheets-Sheet 10 311 I .307 309 M V .91 Z 314 5% lNVENTdR ATTORNE Oct. 23, 1956 M. E. M GOWAN MANUFACTURE OF PARABOLIC REFLECTOR LAMPS Filed July 16, 195.3

13 Sheets-Sheetv l1 h M v ATTORN M. E. M GOWAN 2,767,675

' MANUFACTURE OF PARABOLIC REFLECTOR LAMPS l3 Sheets-Sheet 12 Oct. 23, 1956 Filed July 16', 1953 BY; ATTORNg Oct. 23, 1956 M. EfM GOWAN MANUFACTURE OF PARABOLIC REFLECTOR LAMPS l3 Sheets-Sheet l3 Filed July 16, 1953 United States Patent MANUFACTURE OF PARABOLIC REFLECTOR LAMPS Michael E. McGowan, Bloomfield, N. 5., assignor to Westinghouse Electric Corporation, East Pittsburgh, Pa., a corporation of Pennsylvania Application July 16, 1953, Serial No. 368,272

2 Claims. (Cl. 113-52 This invention relates to a machine for spinning bases to, cutting, fluxing, soldering, flashing, testing, marking and discharging, incandescent electric lamps and, more particularly, those of the parabolic reflector type.

The principal object of my invention, generally considered, is to provide for automatically processing parabolic reflector lamps, to which bases have been loosely applied and the side leads soldered by hand so that, when discharged from the machine, the bases have been firmly secured to the bulb necks, the base shells have been spun into firm connection wit-h the bulb necks, the center leads have been trimmed, fluxed and soldered, the lamps have been seasoned, and any short-circuited lamps properly marked for discard.

Another object of my invention is to provide a machine for automatically spinning, fluxing, soldering, flashing, testing, marking any dead lamps for discard, and discharging parabolic reflector lamps, or other electrical devices having mechanically-applied bases, comprising a conveyor for transporting such lamps from station to station after being side-soldered and loaded thereon by hand, mechanism at the station after those for loading causing said bases to be firmly attached mechanically to the necks of the lamps to which applied, mechanism at the next station for trimming the center leads of such lamps, mechanism at the next station for heating the center contacts of such lamps, mechanism at the following station for applying flux to the trimmed leads and center contacts,

mechanism adjacent the next station for soldering said leads to their center contacts, the following station allowing said lamps to cool, mechanism at the succeeding eight stations for energizing the filaments of such lamps for seasoning purposes, the station following allowing such lamps to cool, and filament energizing means at the-station thereafter for testing and means for marking if short circuited, the following station being a predischarge station, and the station thereafter providing for removal of 3.

said lamps to a discharge chute.

Other objects and advantages of the invention, relating to the particular arrangement and construction of various parts, will become apparent as the description proceeds.

In the scale drawing:

Figure 1 is a fragmentary side elevational view of a machine embodying my invention.

Figure 2 is a fragmentary horizontal sectional View, on the line IIII of Fig. 1, showing details of the drive mechanism for said machine. I

Figure 3 is a sectional view on the line III-III of Fig. 1', showing details of the discharge chute for the machine.

Figure 4 is a fragmentary plan view of one of the bulb holders of the machine.

Figure 5 is a fragmentary transverse sectional view on the line VV of Fig. 4, in the direction of the arrows.

Figure 6 is a fragmentary transverse sectional view of the spinning device of the machine, on the line VIVI of 2,767,675 Patented Oct. 23, 1956 "ice Figure 7 is a fragmentary longitudinal sectional view on the line VII-VII of Fig. 6, in the direction of the arrows.

Figure 8 is a vertical sectional view of a portion of the spinning device of the machine, on the line VIII-VIII of Figure 7, in the direction of the arrows.

Figure 9 is a side elevational view of the top wire cutter of the machine, with parts in transverse section on the line IXIX of Figure 1, in the direction of the arrows.

Figure 10 is a fragmentary view of a portion of the cutter mechanism as shown in Figure 9, but in the closed or wire-cutting position.

Figure 11 is a fragmentary elevational view, with parts in longitudinal section on the line XI-XI of Figure 9, in the direction of the arrows.

Figure 12 is an enlarged longitudinal sectional view on the line XIIXII of Figure 10, in the direction of the arrows.

Figure 13 is a fragmentary horizontal sectional view on the line XIII-XIII of Figure 10, in the direction of the arrows.

Figure 14 is an elevational view, with parts intransverse section on the line XIV-XIV of Figure 1, in the direction of the arrows.

Figure 15 is an enlarged fragmentary view corresponding to Figure 14, but showing the flux-applying tool in retracted position. I

Figure 16 is a fragmentary longitudinal sectional view on the line XVI--XVI of Figure 15, in the direction of the arrows.

Figure 17 is a fragmentary side elevational view with parts in transverse section on the line XVII-XVII of Fig. l, of the top soldering device.

Figure 18 is a top plan view of the top soldering'device.

Figure 19 is an enlarged fragmentary view of a portion of the top soldering device shown in Fig. 17, but with the soldering tip in retracted position, andwith parts in section on the line XIX-XIX of Fig. 18.

Figure 20 is a fragmentary sectional view on the line XX-XX of Fig. 19 in the directions of the arrows.

Figure 21 is a side elevational view of the flashing mechanism, with parts in transverse section on the line XXI-XXI of Figure 1, in the direction of the arrows.

Figure 22 is a longitudinal sectional view, on the line XXII-XXII of Figure 21, in the directionof the arrows.

Figure 23 is a fragmentary enlarged elevational view, with parts in transverse section, of the jaws for making contact with the shell of a lamp base for flashing purposes and associated parts.

Figure 24 is a fragmentary transverse sectional view, corresponding to Figure 21, but showing the positions of the 'parts'when the base-shell gripping jaws are closed.

Figure 25 is a transverse sectional view of the testing and marking mechanism on the line XXV-XXV of Figure 1, in the direction of the arrows,

Figure 26 is a front elevational view on the line XXVIXXVI of Figure 25, in the direction of the ar rows.

Figure 27 is a wiring diagram of the apparatus of Figures 25 and 26.

The present embodiment of our lamp processing machine is paricularly adapted for lamps of the so-called PAR 38 type, that is, those in which each has a parabolic reflector bulb interiorly silvered and closed by a Frame, conveyor and drive mechanism Referring to the drawing in detail, like parts being designated by like reference characters, there is shown in Fig, ,1 an embodiment of the complete machine. The ze'lct'nen s of this machine are desirably supported on a frame 31 which provides upper rails 32 and lower rails .33 disposed between mechanism-supporting channels, supported .on transverse braces extending between said channels, provided with supporting legs, and on which r llers 34 of conveyor chains 35 travel. These chains comprise :series of links .36, connected together by means of pivot pins 37, and traveling over sprocket wheels 38, .at the left hand end, and 39at the right hand end, as

viewed in Fig. 1. The sprocket wheels are carried on spools 41, as viewed in Fig. 2, as by means of bolts 42.

Eachspool is mounted on a shaft, the shaft 43 of the spool 41 being keyed thereto and journaled in portions of the frame 31. It is, however, extended rearwardly beyond said frame and carries the driven element 44 of intermittent-drive mechanism, such as that of the Geneva type. The drive element 45 of said Geneva mechanism is keyed to a shaft 46, also journalled on the frame 31. Said shaft 46 carries a sprocket wheel 47, keyed thereto as shown in Fig. 2, and driven from a ,-rnotor or other prime mover 48, also carried by the frame .31, through a reduction gear box 49, to which it is beltconnected, and a sprocket chain 51 passing over the drive sprocket wheel 52 Ion a shaft 53, "extending from the, box 49,.and said driven sprocket wheel 47. Belt tightening means, suchlas an adjustable idler wheel 54, is provided for'the chain 51.

In order to operate the various processing devices disposed along the conveyor chains 35, there is provided a painehafitSS, journaled in transverse frame elements and carryinguat itslright handend, as viewed in Fig. l, a bevel gear 56 meshing with a bevel gear 57 keyed on the shaft 46. By virtue of this arrangement, the cam shaft turns clockwise, as viewed from the right in Fig. 1,. at a uniform speed, because directly driven by the uniform-speed .motor 48, \While the conveyor chain is moved step by step fromstat'ion to station where loading, spinning, wire cutting, preheating, fluxing, soldering, cooling, flashing, testing and marking, and discharging operations take place.

Lamp-holding heads Paired links of the conveyor chains 35 carry a series of pairs of inward extensions 57, uniformly spaced longitudinally of the machine a distance corresponding with that between the processing stations 1 to 21," incl. Each .pair of said projections has connected thereto a lamp holder or head 58, as by means of screws 59.

These heads 58 comprise platform portions 61, on which test zthe-lenses of the lamps '60 to be processed, and peripheral flange portions 62 surrounding said lens portions, as shown in Figs. 4, 5, 18, and 19. Each flange portion is;providecl with a pair of outstanding lugs 63 and 64 re- .ceiving the opposite endsof a latch holding shaft65, se-

and 73," while permitting it to return to locking position,

4 1 shown in full lines in said figure as it passes from station No. 3. This return movement is accomplished by the biasing coil spring 73 acting between the lamp holding head 58 and the hub of the bell crank member 68.

The upstanding arm 74 of each bell crank member 68 encloses a lamp holding pin 75, biased diagonally downward, as viewed in Figure 5, by a coil spring 76 and acting between a shoulder 77 thereon and an adjusting cap 78 threaded into said arm 74. These pins 75 are spaced longitudinally of the conveyor, as shown most clearly in Figure 4, the proper distance for straddling a positioning boss 79 on the peripheral portion of the lamp lens, so as to hold eachlamp properly oriented and latched in the machine.

Mechanism for spinning indents in mechanically-held bases The mechanism for spinning indents from each base flange 81 of a lamp 60, into corresponding pockets in the cylindrical neck portion of the bulb of such lamp, is positioned at station No. 4 and shown in Figulres 6, 7 and 8. This mechanism comprises a pair of spinning tools 82, which are movable toward and away from one another by means of levers 83 and 84, the upper ends of which .are pivoted to blocks 35 and 86, received between .flanges of yokes 9% in which are fastened the spinning tool holders 87, one of which is shown in Figure 8, as by means of nuts 110. The tools 82 are held from turning in the holders by means of pins in end slots thereof or the like, and the ends of the holders closed, after reception of the tools, as by means of threaded plugs 170, which also serve for adjusting the position of each pinin its holder.

Rotating movement of the tools82 is effected by means of spur gears on the holders 87, which holders are turnably mounted by means of roller bearings 96 in arms 97 of a vertically-reciprocable carrying yoke 98. These spur gears 95, keyed to the holders 37, and also tightened in place by the adjusting nuts 120, are in turn driven by spur gears 99 and 100 keyed on opposite ends of a shaft 101, which is driven by a separate motor 102, through a spur gear 103 on the motor shaft meshing with a spur gear 104 on the top of a drive shaft 105. The lower end of the drive shaft 105 carries a bevel gear 106, meshing with a bevel gear 107 mounted on the shaft 101. The connection between the spur gears 99 and 100, and the respective spur gears 95, is through idler gears 108 and 109 carried by studs 111 and 112 projecting from the respective arms 97 of the carrying yoke 98. The gears 108 and 109 are considerably wider or thicker than the gears 95, so as to allow for horizontal reciprocating movement of the latter with the corresponding tools 82.

The carrying yoke 98 is reciprocated to and from operative engagement with each lamp 60, as it is indexed therebeneath, by means of a lever 113 connected to an upstanding sleeve portion 141 thereof and pivoted to a standard 114. The latter is mounted on a bracket or guide pan 115, in the generally cylindrical body portion of which the sleeve portion 141 is reciprocable. The pan 115 is, in turn held by the posts 116 and 117 which carry the motor 102. The lever 113 is oscillated by means of a box cam 118 on the shaft 55, receiving in its groove 119 a roller 121 on a lever 122, pivoted to the frame 31 of the machine. The other end of said lever 122 is pivoted to the lower end of a connecting rod 123,the upper end of which slides through a coil spring 124, acting between a Washer 125 on a threaded end portion 126, and a washer 1.27 bearing against the apertured end portion of the lever 113. Said threaded portion passes through said end portion and is held thereto by means of a washer 123 and nuts 129.

In this way, the carrying yoke 98 is lowered at the-pron er time until the adjusting blocks 131 and 132, held between depending portions of said yoke 98, to which they are secured by bolts 130, and retainer plates 135 secured to the arms 97 by screws 136, seat on the shoulder 133 between the screw-threaded portion 134 of the base of an indexed lamp 60, and the flange portion 81 thereof. This seating thereby properly positions the tools 82 for effecting the desired spinning-in operations. After such has been accomplished, the yoke 98 is raised to clear the lamp 60 operated on and make way for for the next lamp, while guided by flexible plates 137 and 138 upstanding therefrom and slidable in corresponding slots 139 and 140 in the guide pan 115. It will be seen that, by virtue of the spring 124, the downward movement of the yoke 98 is resilient, thereby effecting the desired seating action without any excessive pressure which might damage or break .the lamp being operated on. The weight of the yoke 98 and associated parts is counterbalanced by weights (not shown) attached to a rod 142 passing through guide brackets 143 and 144 secured to the frame 31, and with its upper end pivoted to the lever 113.

Top wire cutter The mechanism for trimming the center lead of the base of a lamp 60 when indexed at station No. is most clearly shown in Figures 9 to 13, inclusive. Said wire clipping mechanism comprises cutting jaws or clippers 145 and 146 adjustably mounted in holding levers 166 and 167, pivotally mounted about a pin 147 on the end of a clipper-positioning lever 148. The latter is, in turn, pivoted at 150 to a bracket 149 upstanding from the frame 31 of the machine. The lever 148 is prevented from approaching too closely to the center contact of the base of a lamp 60 being processed, by adjusting screw 151, the lower end of which, at the limit of its downward movement, engages an abutment 152 outstanding from said bracket.

Movement of the lever 148 is effected by a connecting rod 153 passing through an aperture 154 in the left hand end portion of said lever, as viewed in Figure 9. Said rod 153 is provided with a stop collar 155 adjustably secured thereto. The upper end of the connecting rod 153 carries a head 156 pivoted to an operating lever 157 which is, in turn, pivoted to the top portion of the bracket 149, as indicated at 158. The lever 157 is connected to levers 159 and 161, in turn pivoted to an arm 162 projecting from the bracket 149, as indicated at 163, as by means of links 164 and 165, respectively pivoted to the lever 157 and the levers 159 and 161.

The lower ends of the levers 159 and 161 are provided with rollers 168 and 169 disposed between the upper end portions of the cutting jaw levers 166 and 167 which, when the lever 157 is moved clockwise, are separated and pry apart said uper end portions. This action causes the cutting members 145 and 146, normally separated by the action of coil spring 160, to come together about an upstanding lead 171 and sever it from the base, as indicated in Figure 10.

This cutting operation is effected by means of a cam 172 on the shaft 55, which engages a roller 173 on the adjacent arm 174 of a bell crank lever pivoted to a bracket depending from the frame 31, as indicated at 175. The other arm 176 of said bell crank lever is pivoted to the lower end of the connecting rod 153, as indicated at 177. Said connecting rod 153 has a resilient insert in the form of a coil spring 178, received in a socket member 179, threadably connected to the upper section thereof, and engaged by a plunger 181 secured to the lower section thereof. Undesired withdrawal of the plunger 181 from the socket 179 is prevented by a cap 182 in which the lower section of the connecting rod 153 is reciprocable. Said cap 182 is threadably connected to the lower end portion of the socket member 179.

Thus, as the cam 172 turns, as indicated by the arrow 183 in Figure 9, connecting rod 153 rises, moving the lever 157 clockwise and separating the upper end portions of the levers 166 and 167. The clippers and 146 thus then come together about the lead wire-and cut it ofit, as viewed in Fig. 10. After this, theclippers 145 and 146 separate, as viewed in Fig. 9, and the lamp goes on to the next position. During this operation, the lever 148 keeps the clippers 145 and 146 from approaching any closer to the lamp base than as viewed in Figures 9 and 10, and on a return movement, in which the connecting rod 153 descends, the clippers are raised slightly from the base of the lamp, by engagement of the stop collar with the left hand end portion of the lever 148.

Preheating and fluxing At station No. 6 there are burners which slightly preheat the top portion of the base preparatory to fluxing. At station No. 7," the operation of fluxing takes place by means of apparatus illustrated in Figures l4, l5 and 16. This fluxing apparatus comprises a container or pan 183 of liquid flux secured to a bracket 184 upstanding from the frame 31 of the machine. In this receptacle, the main body of the liquid flux is held. There is a spoon 185 secured to one arm of a bell crank lever 186, pivoted to the bracket 184, as indicated at 187, and having an extension 188 beyond the pivot 187 to which is attached a coil spring 189, to bias the spoon so that it normally stays in the pan of flux, as viewed in Figure 14.

The flux applicator or finger 191 is desirably made of fiber or brass with a bottom tip formed slightly concave at its contact-engaging surface. It is biased downwardly by means of a coil spring 192 acting between a collar 193 thereon and a block 194 through which the applicator passes. The elevation of the applicator may be adusted by means of nuts 195 on a threaded extension 196 thereof. The lever 197 is provided with a horizontal rod or arm which extends laterally therefrom and carries the applicator 191. The lever is pivoted to a crosshead 216 slidably mounted on the bracket 184, as indicated at 198. It is also biased to upper position by means of a coil spring 199, acting between an upstanding abutment 201 of the cross-head, in which the rod 202 carrying said spring reciprocates, and a shoulder or collar 203 on said rod. The right hand end of the rod 202, as viewed in Figure 15, is pivoted to the lever 197, as indicated at 204.

The left hand portion of the rod 202 reciprocates in an abutment portion 205 of the cross-head 216, and its left hand end portion is pivoted to the upper end of a bell crank lever 206, as indicated at 207. .Said lever 206 is pivoted to the bracket 184, as indicated at 208. The other arm of the lever 206 is pivoted to an adjustable connecting rod 209, the lower end of which is, in turn, pivoted to a bell crank lever 211, as indicated at 212. The other end of said bell crank lever 211 carries a roller 213 engaging a cam 214 on the shaft 55.

In operation, after indexing, the center contact of a lamp 60 is engaged by the flux applicator 191, which has first moved to the left by cam action to pick up some flux from the spoon 185, which is raised into engagement therewith by a roller 215 pivotally mounted on the cross head 216, which moves the bell crank lever 186 counterclockwise to the position of Figure 15. After this has been accomplished, the cam 214 causes the lever 206 to move clockwise, first allowing the spoon to drop back to the flux pan, and then moving the cross head 216 to the right until it reaches the position of Fig. 14, whereupon the lever 197 moves clockwise to cause descent of the flux applicator 191 on top of the center contact of the lamp 60 indexed therebeneath.

S ldering At station No. 8 there is mechanism, including burners, and illustrated most clearly in Figs. 17 to 20, incl., which solders the trimmed lead to the center contact 70 'of a lamp 60, while indexed thereat. There is also; included mechanism which. inhibits the soldering op-. eration. in case. a. lamp. is missing at the particular station. This inhibiting mechanism comprises. a bell-crank lener 2l7i,lpi,voted to a bracket 218 secured to the frame 3L of the machine, as indicated at 219. This. bell-crank le er has. an arm. 221, to which a wear plate 222 is secured, as by screws 223, the left hand end, as viewed. in Fig, 1,, being beveled as indicated at 224, so that an approaching. lamp slides thereover and turnsthe lever counter-clockwise, as viewedin Figure 18.

Such motion is opposed by a coil spring extending from a bracket 226. secured to the frame 31 of the machine, through a link 227. To said link 227 is pivoted thegright hand ends. of dogs 228 and 229, as viewed in Fig. 18'. The dogs 228. and 229- are respectively pivoted tothe frame at 231 and 232. Connecting the left hand end of the lever 217 tov the link 227, is a link 233, the opposite ends of which are respectively connected to the link 227 and a dog 229. by pivot pin 234, and to said lever by pivot pin 235. When there is no lamp in position, the spring 225 moves the dogs 228 and 229 into interfering relationship with collars 236 and 237 on connecting .rods 238. and 239, which serve, respectively, to operate the mechanism for placing the solder in soldering position. and feeding it to the placing means.

The mechanisr'n for placing the soldering head 241 for having the solder fed therethrough and melted in position on the center contact of an indexed lamp 60, by means of a burner 243, comprises a cam 244 on the shaft 55, which is engaged by a roller 245 on a bell crank lever 246,.pivoted to a bracket 247 depending from. the frame 31 of the machine, as indicated at 248. The other end of=the bell cranklever 246 is pivoted to the connecting rod 238, as indicated at 249. The other end of said connecting rod carries a head 251, adjustably secured thereto, and pivoted. to an angular lever 253, as indicated 254.

The lever 253 is pivoted to a bracket 255, upstanding from the frame 31 of the machine, as indicated at 256.

The other arm of the lever carries the soldering head 241, adjustably secured theretov as by means of a set screw 257, as well as solder-feed mechanism, which will subsequently be described in detail. Said lever 253 is provided with a positioning shoulder or ledge 258, which stops it at the proper position, that is, when it engages the shoulder 133. of an. indexed lamp 60, as viewed in Figure 17.

The solder 242,in the form of wire, is supported on the frame 31 of the machine, as by. means of a bracket 259, holding a spool 261 thereof. The spool 261 is journalled in said bracket, which for that purpose has bearings 262. Inorder to prevent the spool 261 from turning too freely, a friction arm 263 pivoted to the bracket 259 as indicated at 265, engages a side thereof under the action of biasing coil spring 264, acting between an arm 266on the hub of said friction arm and an adjustable arm 270 extending from said bracket 259. The solder is drawn from the spool 261 over a pulley 267, pivoted to a standard 268, mounted on the frame 31 of the machine, as indicated at 269, from which it passes over pulley 271 pivoted tothe lever 253, as indicated at 272.

After passing from the pulley 271, the solder wire is drawn through a guide 273, secured to a bracket 274 extending from the lever 253, by a knurled or toothed wheel 275 which bites into said wire 242, while pressing it against an idler but correspondingly knurled or toothed wheel 276, depending from and pivoted with respect to the bracket 274, and biased toward the wheel 275 by a coil spring 290.

The solder driving wheel 275 carries a ratchet 277, driven by a pawl 278 carried by a lever 279, to which it is pivoted as indicated at 281, and biased into ratchetengaging position by a spring 282. A pawl 283, pivoted to the lever 253 as indicated at 284 and biased to ratchetengaging position by spring 285, serves to. prevent re verse movement of the ratchet and. its wheel 275.

Adjustable feeding of'the solder wire 242, is provided by oscillation of the lever 279, which is. adjustably, connected: to bellcrank lever 280 by link 286, one end. of which is pivoted to the lever 279, and the other end of which has a pivot pin. 287 adjustably positioned in a slot 288 in said bell crank lever 280. The lever 280 is oscillated by a earn 289 engaging a roller 291 on a bell crank lever 292, pivoted to the bracket 247, as indicated at 248. The other end of the lever 292 is pivoted to the connecting rod 239 as indicated at 294. The upper end of the rod 239 adjustably carries a head 295, pivoted to the other arm of the lever 280, as indicated at 296. Thus, as the soldering. head 241 is moved from the position of Figure 19 to that of Figure 17, some solder wire 242 is simultaneously fed through said head, as from the position indicated in full lines to that indicated in dotted lines in Figure 19, to thereby engage and apply solder to the center contact 70 of the indexed lamp, while heated by the burner 243.

Cooling and flashing At station No. 9, the lamp is allowed to cool, and at station No. 10 the filament thereof is flashed for seasoning purposes. The mechanism for effecting this seasoning is illustrated in Figures 21 to 24, inclusive. The circuit-effecting mechanism is. lowered into engagement with the indexed lamp by. operation of cam 361 on shaft 55, releasing air to manifold 297, carried by an angle iron 29,8, supported from the frame 31 of the machine.

The mechanism for effecting the admission to, and cut-off of air from, the manifold 297 comprises an air valve 348 in the air supply pipe 349 to said manifold. The valve 348 is carried by a, bracket 351 secured to the frame 31 of the machine, as by means of bolts 352. It comprises a body member 353, which is secured to the bracket 351 as by means of bolts 354 and 355, and a plunger member 356. The plunger member 356, on being moved to the left as viewed inFig. 21, allows air to. pass from the supply pipe 349 to the manifold 297. When the member 356 is moved to the right, under the influence of its return spring (not shown), the air is cut otf from the manifold 297.

A lever 357, pivoted to the body portion 353 as indicated at 358, carries a roller 359 on its free end riding on the cam 361. Thus, as the cam shaft 55 turns, the valve 348 is opened at the proper times to admit air to the manifold 297, from whence it passes to the means for operating all of the apparatus at stations 10" to 17, inclusive and 19.

Compressed air thus passes from the supply pipe through manifold 297 and the branch pipes 299, when the valve 348 is opened, to chambers 301 above flexible diaphragms 302, each held between flanges 303 of said chamber and flanges 304 of a spring-holding chamber 305 therebeneath. The flanges 303and 304 are held together as by means of screws 306, thereby compressing the periphery of the diaphragm 302 therebetween.

Passing through the center, of each diaphragm 302 is a rod 307 which, as the diaphragm moves, reciprocates in a guide member 308. Said guide member is threadably connected to the chamber 305 and serves to hold it on the angle iron 298, as by passing through an aperture 309 therein and pulling chamber 305 down onto a gasket 311 on the top of said angle iron. The upper end of the rod 307 is secured to diaphragm 302 and carries a return spring 312, acting between the diaphragm and the upper end of the guide member 308. The lower end of the rod 387 has adjustably connected thereto a cross.- head 313 held in place by nuts 314 and 315.

Depending from said cross'head 313 are links 316 and 317, the upper ends of which are pivoted thereto. as in,-

dicated at 318 and 319, and the lower ends of which are pivoted to the outstanding arms of hell crank levers 321 and 322, respectively, as indicated at 323 and 324. The bell crank levers 321 and 322 are, in turn, pivotally mounted on an extension 320 from the guide member 308 depending from the angle iron 298. The lower arms of bell crank levers 321 and 322 are angularly extended, as indicated at 325 and 330, for gripping the threaded portion of the base of a lamp 60 indexed therebeneath and effecting electrical contact therewith.

Electrical connection with the center contact 70 of such a baseis effected by a lever 326 pivoted to the extension 320 as indicated at 327. Its long end is provided with an electrical contact portion 328, separated from the rest of the lever by insulation 329 between the contact plate 328 and the lever 326, and by a sleeve of insulating material 331 between the contact bolt 332 and said lever 326. It will be understood that said bolt.332 serves for transmission of electrical energy to said contact member 328, as by means of a lead 333. The returning current is provided for by lead 334 to the bell crank lever 321.

It will, therefore, be seen that as a lamp is indexed at station No. 10, its center contact slides under the contact 328, held thereagainst by coil spring 335 acting between a stud 336 projecting from the extension 320, and a stud 337 projecting from the end of the lever 326. The spring 335 pulls the right hand end portion of the lever 326 into the proper position for being engaged by the center contact of the lamp 60, said position being properly adjusted by means of set screw 338. While this contact is made, compressed air is admitted above the diaphragms 302, causing downward movement of the rods 307 and a corresponding clamping action of the levers 321 and 322 about the screw-threaded portions or shells of the lamp bases, thereby causing a flow of electrical energy through the lamp filaments for seasoning purposes. A similar seasoning is applied to the lamps by means of similar mechanism at each of stations Nos. 11 to 17, incl.

Cooling, testing and marking dead lamps At station No. 18, each lamp as it indexes is allowed to cool. At station No. 19, there is testing mechanism, similar to that at stations Nos. 10 to 17, incl., but coupled with means for applying a mark on the lamp if it is shown to have a short circuit or be otherwise inoperative, as most clearly shown in Figs. 25, 26 and 27.

The circuit for indicating whether or not a lamp is defective and initiating the marking mechanism, is shown in Figure 27. There are provided a pair of relays 362 and 363, connected across a source of supply 364, desirably 220 volts potential, through a step-down transformer 360, to furnish 110 volts. These relays are in series with one another and adjustable resistors 365 and 366 of such ohmic value that insufiicient current normally passes to operate them. At station No. 19, the lamp being tested is not only connected to this source of supply 364 through an electrical contact portion 328 to its center contact, and through the angular extension 325 to its threaded shell portion 134, but the base flange 81 is connected by flexible contactor 370 and lead 380 to the midpoint 367 between the relays 362 and 363.

Thus, if there is a short circuit between either the lamp center contact 70 or the threaded shell portion 134 and the base flange 81, one of the other of the relays 362 and 363 operates, whereas if there is an open circuit between the center contact 70 and the shell portion 134, due to a broken filament, for example, the effective voltage is increased by a corresponding decrease in the current taken from the transformer 360, and both of said relays operate. Such operation results in pulling down one of the switches 368 to energize signal lamp 371, if there is a short with respect to the center contact, and the signal lamp 372 if there is a short with respect to the threaded base shell 134, by means of one of the switches 368, or the energization of both lamps if there is a broken filament. At the same time, this action'en'ergizes the relay 373, directly from the 220 volt source of supply 364, through one or both of the switches 369, to thereby pull down on the bell-crank lever 374 to release the marker-actuating lever 375, pivoted to the frame of the machine, as indicated The release of the lever 375 allows the roller 377 carried thereby to be drawn by spring 378 into operative engagement with actuating cam 379. Cam 379 is carried by shaft 46, which turns at the same speed as the cam shaft 55 because of its being directly geared thereto by equal bevel gears, as viewed in Figure 2. Thus, at each revolution of said shaft, which of course corresponds with an indexing movement of the conveyor, the lever 375 moves clockwise, as viewed in Figure 26, only if it has been released by the presence of a lamp carrying a short circuit between either filament-connected part of the base and the base flange 81. This movement of the lever 375 carries with it a link 381, the lower end of which is pivoted thereto as indicated at 382, and the upper end of which is pivoted to a bell crank lever 383, as indicated at 384.

' The bell crank lever 383 is pivoted, as indicated at 385, to a bracket 386 carried by the frame of the machine. The other arm of the bell crank lever 383 carries a short lever 387 pivoted thereto, as indicated at 388. One end of the lever 387 carries a roller 389 riding on a stationary cam 391, and held in contact therewith by means of a coil spring 392 carried on an operating rod 393 guided between arms 394 and 395 outstanding from the lever 383. The other end of the lever 387 carries a rubber or other resilient tip 396, adapted to carry ink, or other suitable marking material, from a stamp pad 397, supported by bracket 386, to the base flange 81 of a defective lamp, to mark it for discarding purposes.

It will, therefore, be seen that upon a lamp 60, which is short or open circuited as before indicated, reaching station No. 19, the bell crank lever 383 is rotated clockwise, as viewed in Figure 25, carrying the roller 389 to follow the curvature of said cam 391 and thereby effect a reversal in position, or movement of the lever 387 from that shown in full lines to that shown in dotted lines in Figure 25, to transfer a mark from the pad 397 to the flange 81. However, if the lamp at station No. 19 is not so defective, although it is seasoned or flashed, as at stations Nos. 10 to 17 inclusive, (reference characters are applied to this flashing mechanism similar to those applied to the flashing mechanism of Figs. 21 to 24, incl.) it is not marked for discard, because of failure of one of the relays 362 and 363 to be operatively energized.

Discharging At station No. 20, each lamp is allowed to cool, and at station No. 21 it is tilted, as shown most clearly in Figs. 1 and 3. The fixed cam 72 (Fig. 5) at the same time releases the bell crank lever 68, which acts as a latch, and allows successive removal of the lamps from the conveyor by the operation of forks 339 which pass under the lens of each lamp 60, and guide it to the discharge chute 341. The discharge chute 341 is supported on a bracket 342 outstanding from the frame 31 of the machine. In addition to the lower supporting members 343, to which the forks 339 carry said lamps, the chute comprises curved transverse members 344, the upper ends of which are connected by top guide rails 345. The extreme ends of said rails 345 are extended and curved, as indicated at 346, to receive and guide the neck of each lamp therebetween. Lower side rails 347 extend longitudinally between said transverse members 344.

From the foregoing disclosure, it will be seen that I have provided a machine to which lamps of the character specified are fed, after the side leads have been 11 sqlds ssl t the he at as s her f n lops lv a pli d Th se laws ma e I? i iqn d at 9. 2s 2 stat. and n h resitsri he b se a e ecurel atta h d au m i a ly t he b lb necks) b sp nnin ndent? int pret rm d rewir n p ke s Ja min- Ths sentsr seds o s id am s re h rsatt a tsma sa ly trimmed and soldered to t e seats! s qntaqts th 2 9, ,sn. 1 th l ama t s s ftsr eas n d t st d nd dead mps marked for subsequent discard. All of said lamps are hen s t in tisa l fe to a di cha e s ine B vi ue 9 t i ash ne t is ss l to Per o m pe at ns rev o lyn sess l as smpl shsd by even ope at s t he m ls ms t 9f 9P1Y1W9QPQP9 Que tor l ad thi ma hine a d to repa rin tbs lawns as e a e d s har ed th rs rsm- Al hsi sh w f r sd. em odimen h s b e d s lessd it w b u de tand tha msd fiqa qns m be mad Withi he spirit a d e ms Q5319 n nt qnl im;

1- A m shin f aut ma ica l Pr e s n q s w awn qsmpr sin a co ve fe said la mean f drivin sa d m chine including a G a ss anisrn sausing said conveyor to index, said conveyor comprising ,a pair of chains passing over spaced wheels at each endof the line of travel for said lamps, rails supporting the upper and lower portions of said chains, lamp holders supported bet en Pa in s c Said ch sa d am nlds s eac pr s n a P a f with a P e l fl nge fiQ l c p ins h lens P r o of a e v d mp a atch w n able from release positionto extend inwardly from said 12 flan e tQ overl an ece ve b tw n elemen s thereof a pqs ti x in ss 0n the pe iphe y of e lens Portion,

and s st ti n -.a.m fe aus a d t h t u n-i ically swing to lamp-unlocking position as the, conveyor moves.

2 A machine for automatically processing reflector lamps comprising a conveyor for said lamps, drive mechanism for 'causing said conveyor to index, a cam shaft extending longitudinally of said conveyor, means for causing said cam shaft to be driven from said drive mechanism, mechanism adjacent said conveyor comprising a spinning tool, means for rotating said tool, means for lowering said tool into operative position with respect to a lamp carried by said conveyor and after a spinning operation raising said tool to inoperative position, and a cam on said shaft for causing said tool to push metal from a base into indentations in the neck of an associated lamp bulb.

References Cited in the file of this patent UNITED STATES PATENTS 1,708,756 Pagan et al Apr. 9, 1929 2,019,622 Meyer Nov. 5, 1935 2,069,386 Palucki Feb. 2, 1937 2,120,877 Uber June 14, 1938 2,162,209 Trutner Mu. June 13, 1939 2,564,839 Giacchetti Aug. 21, 1951 2,580,670 Gilbert Jan. 1. 1952

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