US1655140A

US1655140A - Stem-making machine

Info

Publication number: US1655140A
Application number: US399801A
Authority: US
Inventors: John T Fagan
Original assignee: General Electric Co
Current assignee: General Electric Co
Priority date: 1920-07-29
Filing date: 1920-07-29
Publication date: 1928-01-03
Anticipated expiration: 1945-01-03
Also published as: NL10191C; FR540818A

Description

Jan. 3, 1928.

J. T. PAGAN STEM MAKING MACHINE Filed July 29. 1920 ZNYENTDR His ATTORNEY.

Jan. 3, 1928. 1,655,140

J. T. FAGAN STEM MAKING MACHINE JNyENTc/'R s zbfmr 7'.' 22a-sm,

by ffm/4M Passed Jan. a, 192s.

U N IT E D S T A T JOHN r. raam,

0l' CLEVELAND, OHIO, ASSIGNOR TO GENERAL ELECTRIC COMPANY,

A. CORPORATION OF NEW YORK.

STEM-MAKING MACHINE.

Application mea my 2a, isao. semi No. asaaoi.

invention relates to machines for making stems for incandescent lamps and similar articles, and more particularly to machines for making stems for tipless lamps and similar articles such as disclosed in Patent No. 1,423,956, issued July 25, 1922, to Mitchell and White, althou h my invention is also applicable to the ma ing of other types of stems. One object of my invention is to produce a compact machine which will have a comparatively high output andy in which the arts will be so disposed as to minimize t e wear and warping of parts. Machines of this character in which the article manufactured is subjected to heat are particularly subject to warping of parts, and one of the important features of my invention is that the actuating mechanisms for the holders of the stem parts and the heating means are so related that these mechanisms are not subject to high heating. Other features and advantages of my invention wil appear from the description of a specific embo iment thereof which follows.

In the operation of this specific machine embodying my invention, the assembling o the stem arts in the machine and the removal of t e completed stem is accomplished manuall The stem parts are placed in the hea preferably in the following order, the stem tube, the leading-in wires, the exhaust tube if a tipless stem is being made, and the filament support rod which is ordinarily of cane glass. The steps of the operation of making a tipless stem comprise assembling the stem parts, heatin the parts to fuse that ortion which forms 'tr e seal about the leading-in wires, clamping together the fused ortion to form the seal, and blowing air into the exhaust tube to form an a erture through the walls of stem tube which have lost their separate identity by the fusing. If an ordinary stem is to be made, the exhaust tube is omitted from the assembly and the blowing step from the stemmaking operation. There are a number of heads mounted on a carrier and the drive is intermittent so that each head pauses in succession in operative relation to each of a series of means each performing a function in the manufacture o the stem- I have provided means for causin a relative movement between the flame irectingfusing means and the head to allow passage of the latter as the carrier is moved. In the specific eml 10 (Fi .2) carries the exhaust tu e and p bodiment the burners are swung out of the path of the head as the rotary carrier in dexes.

In the accompanying drawings, Fig. 1 is a top lan View of a machine embodying my invention; Fig. 2 is a sectional elevation on the line 2-2 of Fig. 1; Fig. 3 is a fragmentary enlarged elevation of one of the h eads; Fig. 4 is a top plan view on the section line 4-4 of Fi 3; Fig. 5 is a top lan view on the section line 5-5 of Fig. 3; Fig. 6 illustrates the operation performed in position A; Fig. 7 in position B; Fig. 8 in osition C; Fig. 9 the clamping o eration in position D; Fig. 10 the partial Iblowing operation in osition E; Fig. 11 the completion of the b owing operation in position F; and Fi 12 is a diagram of the air pressure indicating means and Fig. 13 is a section on the line 13/13 of Fig. 5.

Referring to the drawings, the standard the table 11 which supe apron 12. The indexing mechadriven as follows. Through the 13 oii the table 11 passes the vertical ports t nism is bearing f shaft 14 which also has suitable bearings in the standard 10. The shaft 14 is'driven byla motor (not shown) through a belt 15 w ich drives a pulley 16 on the shaft 17 carried,by the tab e 11 and which has a worm 18 fastened to the other end. The worin 18 meshes with and drives the worm wheel 19 which is carried b the shaft 14 but is free to rotate separate y therefrom and which has an intermittent-gear 20 attached thereto. To cause the machine to index the gear 20 periodically meshes with and drives the gear 21 on the vertical shaft 22 which is carried in suitable bearings by the table 11. On the upper end of the shaft 22 is a Geneva inion comprising a disc 23 having an arm 24.- on each side, and these arms carry a roller 25 on a pin 26 between their ends. When the gear 21 is driven by the gear 20, the disc 23 and roller 25 mesh with the Geneva gear 26' which is fastened to the vertical shaft 27 which passes through the bearing 28 on the apron 12. This drive gives an intermittent motion to the shaft 27 causing each of the heads, described later, to pause for a timeat each position and then to be moved on to the next position.

On the shaft 27 are mounted three superplsed spiders constituting the carrier 27.

e uppermost spider 28 supports the exhaust tube holdin and operating means, the intermediate spi er 29 supports the flare tube holding and operating means; and the lowermost spider 30 supports the holder and operating mechanism for the filament support rod and positioning means for the leading-in wires. There is another spider 31 which rests on the bearing 28 and is positioned on the shaft 27 by the collar 32. This spider serves to support the means for holding the leading-in wires and also the means for operation and controlling the various stem parts holding means. In the specific machine shown each of these spiders has eight arms and they cach support parts which collectively make eight similar heads 33.

Mechanism is provided on each head to support a stem tube, exhaust tube, filament. support rod and a pair of leading-in wires. This mechanism is distributed on thc head 33 as follows. For each head 33, the spider 31 carries a vertical control shaft 34 (see Figs. 3, 4 and 5) which is suitably supported in each of the members of the carrier and which carries the actuating means for the mechanisms ou these members. On the lower end of the shaft 34 is fastened a crank 35 (Fig. 3) and above the crank on the shaft 34 is a rotatable sleeve 36 having fastened on the lower end a lever 37 which has a handle 38 at one end and a projection 39 at the other end. The lever 37 gives the operator a means of controlling the shaft 34 as the rojection 39 strikes one armY of the cranll; 35 so as to turn the shaft 34 when the lever 37 is turned to the left by means of the handle 38. The rotation of the lever 37 to the left actuates all the mechanisms and they are closed in succession as the lever returns to the right until it reaches its normal position. A further movement to the right causes an opening of one of the holders, namely, that for the filament support rod. On the upper end of the sleeve 36 is fastened a collar 40 having an arm 41 which carries a pin 42. Through a link 43 (see also Fig. 5) the pin 42 is connected to the pin 44 on one arm of the crank 45 which is pivoted on the spider 30 at 46. A collar 47 (Fig. 3) having a projection 48, which may be engaged by the crank 45 to cause rotation thereof, is fastened to a sleeve 49 (see also Fig. 5) which asses through the spider 30 around the shaft 34 and which has a crank 50 (Fi 5) attached to its upper end. 'When t e lever 37 is turned to the right it causes the crank 45 to engage the projection 48 consequently rotating the collar 47, sleeve 49, a crank 50 to open the filament supporting rod holding jaws as hereinafter described. One arm of the crank 50 is connected through a link 51 with the finger 52 which is ivoted on a rod 53 passing through the

memgers

28, 29 and 30 as more fully explained hereinafter, and the other arm of the crank 50 is connected through the link 54 to a linger 55 pivoted on a rod 56 supported in a manner similar to the rod 53 as more fully explained hereinafter. Rotation of the crank 5() in the direction of the arrow (Fig. 5) causes a separation of the fingers 52 and 55. This rotation may be caused by the rotation of the lever 37 to the right caus` ing the crank 45 to engage the projection 48 as previously mentioned or b the following mechanism. A cam 57 is astened to the shaft, 34 between the fingers 52 and 55 so that when the shaft is rotated to the left, as by turning the lever 37 to the left as previously described, the cam 57 engages a pin 58 fastened in the crank 50 and upon further rotation forces the fingers 52 and 55 to separate as for the insertion or removal of the rod 59 as more fully described later. The spring 60 fastened to the lower member 30 and one arm of the crank 50 tends to keep the lingers in a closed osition.

The fingers 52 and 55 sli e in guideways formed by the lower member 30, a spacing washer and a top piece 63. Pivoted at 63 and 64 respectively on the fingers 55 and 52 respectively are the leading-in

wire holding fingers

64 and 65 which rest on the lingers 55 and 52 respectively but pass over the top piece 63 of the guideways. The

lingers

64 and 65 when closed hold the leadingdn wires 66 in position to prevent shifting during the clamping operation which is more fully described later, and are notched at 67 to permit the passage therethrough of the rod 59. Pins 69 and 70 are respectively so placed on each finger 55 and 52, that when the fingers are opened as previously described thev respectively bear against and cause the

fingers

64 and 65 to open. A spring 70 attached to

fingers

64 and 65 tends to keep them in a closed position. If the lever 37 is turned to the right the crank 45 through the link 43 will be forced into engagement with the projection 48 of the collar 47 which is fastened to the sleeve 49 on the upper end of which is the crank 50 and further turning of the lever 37 to the right will cause the crank a0 to be rotated to the left and so to open the fingers 55 and 52 and also the

fingers

64 and 65.

A collar 71 (Fig. 3) fastened to the lower part of the sleeve 49 carries an upright 72 with an arc-shaped arm 73 which has an incline 74 which, when the lever 37 is turned from its center position to the left as previously described, engages and forces upward a rod 75 resting in and sliding in the vertical support 76 carried by the spider 30. The rod 75 in its upward movement engages a fin er 77 pivoted at 78 on the spider 30 causmg the finger 77 to move upwardly about the pivot 78 to auffe the stem tube 78 when the head 33 isoaded as well as to force u Wardly the com leted stem at the seal w en it has been ormed just above the pair of fingers 64' and 65 which are simultaneously opened by movement of the lever 37 to the left as previously described.

On the middle member 29 are carried the stem tube holding fingers 79 and 80 (Figs. 3 and 4) which are respectively pivoted on the

rods

56 and 53 previously mentioned. The fingers 79 and 80 are connected through the links 81 and 82 respectively to either arm of the crank 83 which is rotatably positioned on the vertical shaft 34 so that when lever 37 is turned to the left the cam 84 fastened to the shaft 34 engages a pin 85 on the crank 83 causin the crank to force apart the lingers 79 an 80 for the insertion or removal of the stem tube 7 8. A sprin 86 fastened to one arm of the crank 83 an to the spider 29 tends to keep the lingers 79 and 80 in a closed position. The fingers slide in guideways formed by the middle member 29, a spacing washer, and the top piece 89. Movement of the lever 37 to the right does not affect the fingers 79 and 80.

The spider 28 (Figs. 3 and 1) carries the exhaust

tube holding fingers

90 and 91 which are respectively pivoted on the

rods

56 and 53 previously mentioned and are connected through links 92 and 93 respectively to either arm of the crank 94 rotatably carried on the shaftv 34. A spring 95 fastened to one arm of the crank 94 and to the spider 28 tends to keep the lingers closed. When the lever 37 is turned to the left a cam 96 fastened to the shaft 34 enga es a pin 97 on the crank 94 causing the

ngers

90 and 91 to be separated forthe insertion or removal of the exhaust tube 98. The fingers slide in guideways formed by the spider 28, a spacing washer and the top piece 101. The movementof the lever 37 to the right does not all'ect the

fin ers

90 and 91. The spider 28 may be raise on the shaft 27 and separated from the middle member 29 in order to adapt the machine to making stems with a longer stem tube 78 than that shown in the drawing, Fig. 3. In fact, the` s iders 28, 29, 30 and 31 may be given di erent relative ositions on the shaft 27 if desired or ound more convenient.

When the lever 37 lis in a radial position with reference to the spider 31 as shown in Fig. 1 and the head 33 is not loaded with stem parts, the pairs of lingers 52 and 55, 79 and 80, and 90 and 91 are not complete- 1y closed together as the respective cranks 50, 83 and 94 are prevented from further rotative action on the part of the

respective springs

60, 86 and 95 by suitable stops. Thus it is possible to remove any finger or pair of fingers without disturbing the rest of the head. Inasrnuch as the rod 53 (Fig. 3) carries the

fingers

52, 80 and 91 and blo 103 and consequently to bring the protector anges 102 together at their upper end. his facilitates the insertion therein of the leading-in Wires 66 at the loading i position. The cane glass gauge 105 extends through the block 103 and the bottom member 31 and comes into en agement with an arc shaped cam 107 (see a so Figs. 1 and 5 which is carried on the lever 37 and Whic normally holds up the H-shaped member 104 against theact-ion of the spring 106. An incline 108 on the right end of the cam 107 facilitates the engagement of the cam 107 with the lower end of the cane glass gauge 105 the upper end of which has a rim 109 artially encircling the top to facilitate the oading of the cane glass.

Position AV (Fig. 1) is a loading position and to load the head 33 the operator turns the lever 37 the full distance to the left. This permits the cane glass gauge 105 (Fig. 3) to fall and the leading-in Wire protector gauges 102 to be brought together at their upper end and also opens the pairs of

fingers

52 and 55, 64 and 65, 79 and 80, and 90 and 91 as previously described. The stem tube 78' is inserted and the lever 37 moved slightly to the right to close the fingers 79 and 8,0 which hold the stem tube. The leading-in Wires 66 are inserted through the stem tube in the protector gauges 102 and are positioned in the supports 110 and 111 carried on the finger 79. The exhaust tube 98 is then positioned in the stem tube and the lever 37 turned to the right to close the

fingers

90 and 91 upon the exhaust tube and also to separate the leading-in wire protector gauges 102. The pairs of

fingers

52 and 55 and 64 and 65 have been closed by the rotation of the lever 37 to the right but after the normal position has been reached further rotation to the right opens them again and leaves the others unmoved. The cane glass 59 is now inserted so as to rest upon the gauge 105 and the fingers 52 and 55 closed upon it by returning the lever 37 to the left until it lies in a line extending radially from the center of the spider 31. The head is now loaded for the formation of a stem (see Figs. 3 and 6).

Position B (Fig. 1') is a heating position and here the parts located just above the lingers 64' and 65 (Fig. 7) are heated by lll) the burners 112 (Fig. 1) carried on either side of the support 113 which is pivoted at 114 to the apron 12. The gas and air mixture is supplied to the burners through a rubber hose 114 attached to a nip le 115 on the burner support 113 and to tie

supply lines

116 and 117. The support 113 has a finger resting on a finger 116 which is attached to the burner support 117 (at position C) whose other finger 118 rests on a rod 119 (Fig. 2) carried in the apron 12. Resting on the finger 118 (Fig. 1) is a Enger 126 attached fo the clamp and burner supportV 121 at position D. The support 121 has a second finger 122 upon which rests a linger' 123 attached to the burner support 124 (at position E) upon Whose other finger 125 rests the finger 126 of the burner support 127 in position F. At the time of indexing a roller 128 (Fig. 2) pivoted in the lower end of the rod 11,9 rides up the inclined surface 129 in the upper arm 24 of the Geneva pinion, previously mentioned, so that the rod 119 is raised, thus rairging the whole series of fingers and causing their respective supports to be tilted back about their respective pivots so as to withdraw their respective burners from the path of the heads 33 during the indexing movement. Similar springs 13() (Fig. 2) attached to the apron 12 and the similar supports 131 on

fingers

115, 120, 123 and 126 (Fig. 1) of the respective burner supports return the burner supports into operative position. The relative disposition of the burners and the means and mechanism for supporting the stem parts is such that the flame is not directed on these means or mechanism. This is an important feature of my invention.

In position C the burners 132 (Figs. 1, 2 and 8) on the burner support 117 intensively heat the stem parts above the

fingers

64 and 65. The burners 132 are supplied with a gas and air mixture similarly to the burners 112 previously mentioned.

In position D the burners 133 (Figs. 1, 2, 3 and 9) on the support 121"intensively heat the stem parts above the lingers 64 and 65. The burners 133 are supplied with a gas and air mixture similarly to the burners 112 previously mentioned. The seal is then formed in the stem by the

clamps

134 and 135 which are carried by the support 121 and which are connected through links 136 (Fig..2) and 137 (Fig. 3) to a rod 138 (Figs. 2 and 3) also carried by the su port 121. Below the lower end of the ro 138 and in line therewith is a rod 139 (Fig. 2) carried by the apron 12. On the lower part of the rod 139 is an adjustable stop 140 and below the stop is a spring 141 encircling the rod 139 and resting on the cylinder 142 connected through links 143 to one arm of a crank 144 carried by the apron 12. A stop 144 on the lower end of the rod 139 prevents the accidental removal of the cylinder 142. A roller 145 pivoted in the other arm of the crank 144 rides on the end of a horizontal rod 146 carried by the table 11 and in the other end of the rod 146 is pvoted a roller 147 which rides on a cam 148 fastened to the shaft 14 previously described. Just before the carrier 27 indexes, the cam 148 forces the rod 146 outwardly and the rod 146 causes the crank 144 through the links 143 to pull upwardly on the cylinder 142 tending to compress the spring 141 against the stop 140 which causes the rod 139 to be raised forcing the rod 138 upwardly and thus causing the

clamps

134 and 135 through the

links

136 and 137 to close upon the glass to form the seal. The cam 148 then permits the rod 146 to return thus releasing the clamps.

In position E (Figs. 1 and 10) the burners 149 carried by the support 124 heat the stem just above the seal or clamped portion, the burners being supplied with a gas and air mixture similarly to the burners 112 previously mentioned. A nozzle 150 (Fig. 1) which is attached to the pipe 151 carried by the apron 12 and connected to a source of air pressure, is aligned with and just above the upper end of the exhaust tube 98 and directs air preferably of low pressure into the end of the exhaust tube. As the glass above the seal is fused by the burners 149, the air pressure from the nozzle 150 causes a bulb-shaped part to form gradually just above the seal and then to blow out forming an aperture 152 (see F ig 11) which connects the passage through the exhaust tube with the outside of the stem tube. This complete operation is fully described and explained in the application of Mitchell and White, Serial No. 283,801, filed March 20, 1919, now Patent No. 1,423,956, July 25, 1922, and also in the Patent 1,423,957 to Mitchell et al. In order to secure an indication of the amount of air pressure, one end of a U-tuhe 153 (Fig. 12) containing a fluid such as water or mercury is connected to the pipe 151, the other end of the U-tube being open to the atmosphere. The difference in the height of the columns of fluid in the U-tube 153 as measured on a graduated card 154 attached thereto is an indication of the pressure of air directed from the nozzle 150. In order to cool the stem tube 78 and exhaust tube 98, I preferably provide a nozzle 154 connected to the pipe 151 to direct a. stream of low pressure air into the stem tube 78.

In position F (Figs. 1 and 11) I have provided burners 155 on the support 127 to heat the stem just above the seal anda nozzle 156 similar to the nozzle 150 and similarly placed and connected to the source of`air pressure with similar means for securing an indication of the pressure of air directed ture is into the exhaust .tube from the nozzle 156. While usually the aperture forming operation may be completed in position E, it may be desirable or preferable to perform the operation in two steps using a lower air ressure in each step. In such case the urners 155 are lighted and air pressure turned on through lthe nozzle 156 and the operation as exp ained for position E will be completed in position F while the preliminary heating and forming of the bulbshaped portion above the seal will be carried out in position E. If the two-ste aperture forming operation is used, I pre er to provide a nozzle 157 (see Fig. 11) similar to the' nozzle 154 for the purpose of cooling the stem tube 78 and exhaust tube 98.

In positions G and H (Fig. 1) the now completed stem is allowed to cool although position H may be used as an unloading sition, if desired. Usually the unloading is preferably done at the loading position, that is, position A, as it requires such a short period of time to be accomplished. The unloading is performed by turnin the lever 37 (Figa 1 and 3) to the left w ich opens all the pairs of ngers and causes the iinger 77 to force upwardly on the end of the seal of the completed stem to facilitate the unloading.

In operation the stem parts are assembled in position A as shown in Fig. 6; are heated reliminarily in position B as shown in ig. 7; and are intensively heated in position C as shown in Fig. 8. In osition D, as shown in Fig. 9, the vfused seal 1s clamped; in position E, as shown in Fig. 10, an aperblown Vthrough the nozzle 150; and in position F, as shown in Fig. 11, the stem is allowed to cool although the a erture forming operation may be artial y performed at this step. Positions and H are cooling positions although position H ma be used as an unloading position if desired.4 If position H is not used as an unloading position, the unloading is performed at position A. v

While I have described my invention as embodied in a machine for making stems for tipless lamps, it should be understood that the same machine may readily be adapted to the production of stems for the usual tipped lamp. Furthermore while I have described a s ecfic machine, I do not wish to be limite in scope thereto as various modifications will readil suggest themselves to those skilled in t e art.

What I claim as new and desire to secure by Letters Patent of the United States, is:

1. In a stem making machine, the combination with a movable carrier and means for moving said carrier, of a head on said carrier comprising means for supporting a stem tube, means for supporting an exhaust tube in said stem tube, means for supporting lead-v in -in wires between said exhaust tube and said stem tube, means for supporting a lament support rod aligned with the ends of said stem tube and said exhaust tube, means for causing the successive engagement of said supporting means with the aforesaid stem parts, and means for uniting said stem parts together. v

2. In a stem making machine, the combination] with a movable carrier and means for moving said carrier, of a head on said carrier comprising means for supporting a stem tube, means for supporting an exhaust tube in said stem tube, means for supportin leadin -in wires between said exhaust tage and said stem tube, means for su porting a {ilament support rod ali ed with the ends of said stem tube and said exhaust tube, means for unitin said stem parts and means for causing t e simultaneous release of said supporting means for the removal of the completed stem.

3. In a stem makin machine, the combination with a movabe carrier, means for moving said carrier and a head on said carrier for supporting stem parts comprising means for supportin a stem' tube, means for causing said stem tu e supporting means to engage said stem tube, means for supporting an exhaust tube in said stem tube, means for causing said exhaust tube supportin means to engage said exhaust tube, means or sup- .porting leadin -in wiresy between said exhaust tube an said stem tube, means for supporting a filament support rod aligned with the ends of the said stem tube and said exhaust tube, means for causing said rod supporting means to engage said rod, and means for causing the successive engagement of said engaging means of said respective supporting means with the aforesaid stem parts.

4. In a stem m machine, the combination with a movab e carrier, `means for moving said carrier and a head on said carrier for supporting stem parts comprising means for su porting a stem tube, means for causing said stem tube supporting means to engage said stem tube, means for supporting an exhaust tube in said stem tube, means for causing said exhaust tube supporting means to engage said exhaust tube, means for supporting` leadin -in wires between said exhaust tube and sait? stem tube, means for supporting a filament support rod aligned with the endsof the said stemtube and said exhaust tube, means for causing said rod supporting means to engage said cane glass and means for causing the simultaneous release of said engaging means of said sup, porting means for the removal of the aforesaid stem parts.

5. In a stem making machine, the combination with a movable carrier, in eans for moving said carrier and a head on said carrier Y porting means to en for supporting stem parts comprising means for supporting a stem tube, means for causing said stem tube supportin means to engage said stem tube, means Ier supporting an exhaust tube in said stem tube, means for causing said exhaust tube supportinr means to engage said exhaust tube, means Ier supporting leading-in wires between said exhaust tube and said stem tube, means for supporting filament support rod aligned with the ends of the said stem tube and said exhaust tube, means for causing said rod supporting means to engage said rod and means for causing the simultaneous release of said engaving means of said supporting means for t e removal of the completed stem and co-acting means for forcing said stem upward to assist in the removal thereof.

6. In a stem making machine, the combination with a movable carrier, means for moving said carrier and a head on said carrier for supporting stem parts comprising means for supportin a stem tube, means for causing said stem tu e supporting means to engage said stem tube, means for supporting an exhaust tube in said stem tube, means for causing said exhaust tube supporting means to engage said exhaust tube, means for supporting leading-in wires between said ex aust tube and said stem tube, means for supporting filament support rod aligned with the ends of the said stem tube and said exhaust tube, means for causing said rod supporting means to engage said rod, and means for causin the successive engagement of said engaging means of said res ective supporting means with the aforesai stem arts comprising a cam shaft, cams mounted t ereon corresponding to the Stem tube supporting means, the exhaust tube supporting means and the cane glass supporting means, means successively co-acting with said cams and respective means and means for causing the rotation of said cam shaft to cause said cams to disengage said co-acting means Jto permit the respective aforesaid engaging means to function.

7. In a stem makin machine, the combination with a movab e carrier, means ,for moving said carrier and a head on sa1d earrier for supporting stem parts comprising means for supporting stem tube, means for causing said stem tube supporting means to engage said stem tube, means for supporting an exhaust tube in said stem tube, means for causingr said exhaust tube supportingI means to engage said exhaust tube, means or supporting leadin -in wires between said exaust tube an said stem tube, means for supporting filament support rod aligned with the ends of the said stem tube and said exhaust tube, means for causing said rod supge said cane glass and means for automatically releasing sai engaging means of said respective supporting means to permit the removal of the said porting means.

8. In a stem making machine, the combination with `a movable carrier, means for moving said carrier and a head on said carrier for supporting stem parts comprising means for supportin a stem tube, means for e supporting means to causing said stem tu engage said stem tube, means for supporting stem tube, means for supan exhaust tube in said causing said exhaust tube supporting means to engage said exhaust tube, means for supporting leading-in wires between said exhaust tube and said stem tube, means for supporting filament support rod aligned with the ends of the said stem tube and said exhaust tube, means for causing said rod supporting means to engage said rod, means for gauging the position of the cane glass, means for causing the independent release of the cane glass engaging means, means for operating said gauging means.

9. A machine for assemblin and uniting work parts to form a stem ger an incandescent lamp or similar article comprising a plurality of pairs of jaws adapted to move in horizontal planes and means for sequentially actuating the pairs of jaws to receive the work parts in the order of their assembly.

10. A machine for assembling and uniting work parts to form a stem for an incandescent lamp or similar article comprising a plurality of pairs of jaws adapted to move in horizontal planes and means for successively actuating said jaws to permit the insertion of said work parts for assembly, said jaws being adapted for substantially simultaneous actuation to release said work arts.

11. In apparatus for assemb ing and consolidating work blanks consistingof an arbor, a are tube and an exhaust tube to form stems for incandescent lamps or similar articles, the combination of a plurali of work-blank-supporting clamps, each o the said clamps comprisin two opposing jaws arranged to swing in orizontal planes and about independent axes, an actuating lever for operating said jaws to receive and sup- Dortthe blanks, means for ap lying heat locally to the assembled parts and means for directing a current of air throu h the ex haust tube to provide a communication for exhaust purposes.

12. In means for assembling and consoli dating a plurality of glass parts to form stems for incandescent lamps, the combination of upper, lower and intermediate workholding clamps, and an actuating lever for operating said clamps to receveand support an arbor and flare tube on a vertical axial line, the above mentioned lever beingl adapted for independently operatin the upper laips to receive and supportgl an exhaust 13. In a stem machine, the combination of extending in the same direction, each palr being shaped at one end to hold a stem part, supporting means for said clamps located entirely near the opposite ends thereof, a substantially vertically extending shaft also located near said opposite ends and-cosacting means whereby the movement of said shaft controls the opening and closing of said pairs of clamps.

14. In a stem machine, the combination of a movable carrier, meansY mounted adjacent to said carrier for pro'ecting a flame in a substantially horizontai direction and a head mounted on said carrier and comprising a plurality of su erposed airs of sub stantially horizontal y exten ing clamps eachv adapted to support a stem part so that the stem assembly extends through the line of the aforesaid flame, and supporting and actuatin means for said clamps located out of line o said fiame.

15. In a stem lnachine, the combination of a movable carrier, having mounted thereon a plurality of heads each comprising superposed pairs of substantially horizontally extending clamps each adapted to support a stem part, means dis osed in the path of travel of said stem or directing a flame against a portion thereof, supporting and actuating means for said clamps disposed out of the line of said flame, and means for causm flame irecting means and said head to allow lntermittent movement of said carrier.

a relative movement between said 16. In a stem machine, the combination of a movable carrier having a plurality of heads supported thereon each comprising means for holding stem parts, a burner mounted adjacent to the said carrier, means for intermittently moving said carrier to bring said stem parts successively into operative relation to said burner and means for moving said burner transversely to the path of travel of said stem parts to allow their passage as the carrier is moved.

17 In a stem machine, the combination of a rotary carrier having a plurality of heads supported thereon each comprising means for holding stem arts, a burner mounted adjacent to the sald carrier, means for indexing said carrier to bring said stem parts successively into operative relation to said burner and means forV moving said burner transversely to the path of travel of said stem parts to allow t eir passage as the carrier is indexed.

18. In a stem machine, the combination of a movable carrier having a pluralityof heads supported thereon each comprising means for holding stem parts, a burner pivotally mounted adjacent to the said carrier, means for intermittently moving said carri er to bring said stem parts successively into operative relation to said burner and means for swinging said burner transversely out of the path of travel of said stem parts to allow their passage as the carrier 1s moved.

In witness whereof, I have hereunto set my hand this twenty-sixth day of July, 1920.

JOHN T. FAGAN.

means for projecting a flame in a generally horizontal direction and a head comprising a. plurality of superposed pairs of clamps extending in the same direction, each pair being shaped at one end to hold a stem part, supporting means for said clamps located entirely near the opposite ends thereof, a substantially vertically extending shaft also located near said opposite ends and co-acting means whereby the movement of said shaft controls the opening and closing of said pairs of clamps.

14. In a stem machine, the combination of `a movable carrier, means mounted adjacent to said carrier for pro'ecting a flame in a substantially horizontal direction and a head mounted on said carrier and comprising a lurality of superposed pairs of substantia ly horizontally extending clamps each adapted to support a stem part so that the stem assembly extends through the line of the aforesaid llame, and supporting and actuatin means for said clamps located out of line o said flame.

l5. In a stem machine, thc combination of a movable carrier, havingr mounted thereon a plurality of heads each comprising superposed pairs of substantially horizontally extending clamps each adapted to support a stem part, means dis osed in the path of travel of said stem or directing a llame against a portion thereof, supporting and actuating means for said clamps disposed out of the line of said liame, and means for causing a relative movement between said flame lrecting means and said head to allow intermittent movement of said carrier.

16. In a stem machine, the combination of a movable carrier having a plurality of heads supported thereon each comprising means for holding stem parts, a burner mounted adjacent to the said carrier, means for intermittently moving said carrier to bring said stem parts successively into operative relation t0 said burner and means for moving said burner transversely to the ath of travel of said stem parts to allow t eir passage as the carrier is moved.

17. In a stem machine, the combination of a rotary carrier having a plurality7 of heads supported thereon each comprismg means for holding stem arts, a burner mounted adjacent to the sald carrier, means for indexing said carrier to bring said stem parts successively into operative relation to said burner and means for moving said burner transversely to the path of travel of said stem parts to allow their passage as the carrier is indexed.

18. In a stem machine, the combination of a movable carrier having a plurality of heads supported thereon each comprising means for holding stem parts, a burner pivotally mounted adjacent to the said carrier, means for intermittently moving said carri er `to bring said stem parts successively into operative relation to said burner and means for swinging said burner transversely out of the path of travel of said stem parts to allow their passage as the carrier 1s moved.

JOHN T. FAGAN.

CERTIFICATE 0F CORRECTION Patent No. l, 655, 140.

Granted January 3, 1928, to

JOHN T. FAGAN.

It is hereby certified that errorappears in the printed specification of the above numbered patent requiring correction as follows:

' ead "90"; a e 6, line 63, claim 7, numeral 80 r p g andV thatthe said Letters Patent should'be glass" and insert the word "rod";

Page 3, line 66, for the strike out the words "cene read with these corrections therein that the same may 'conform to the record of the case in the Patent Off-ice.

Signed and sealed this 14th day of February,

Seal.

A. n. 192s.`

M. 1 Moore, Acting Commissioner of Patente.

CERTIFICATE OF CORRECTION Patent No. 1,655,140. Granted January 3, 1928, to

JOHN T. FAGAN.

It is hereby certified that errorrappears in the printed specification of the above numbered patent requiring correction as follows: Page 3, line 66, for the numeral "80" read "90"; page 6, line 63, claim 7, strike out the words "cane glass" and insert the word "rod"; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 14th day of February, A. D. 1928.

M. J Moore,

Seal. Acting Commissioner of Patente.