US1710428A - Method and machine for manufacturing incandescent lamps and similar articles - Google Patents

Method and machine for manufacturing incandescent lamps and similar articles Download PDF

Info

Publication number
US1710428A
US1710428A US60585A US6058525A US1710428A US 1710428 A US1710428 A US 1710428A US 60585 A US60585 A US 60585A US 6058525 A US6058525 A US 6058525A US 1710428 A US1710428 A US 1710428A
Authority
US
United States
Prior art keywords
exhaust
head
bulb
machine
sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US60585A
Other languages
English (en)
Inventor
Mey Karl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US1710428A publication Critical patent/US1710428A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/20—Seals between parts of vessels
    • H01J5/22—Vacuum-tight joints between parts of vessel
    • H01J5/24—Vacuum-tight joints between parts of vessel between insulating parts of vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
    • H01J2893/0037—Solid sealing members other than lamp bases
    • H01J2893/0038—Direct connection between two insulating elements, in particular via glass material
    • H01J2893/0039—Glass-to-glass connection, e.g. by soldering

Definitions

  • the mounts each consisting of the stem and inner parts of the lamp, are continuously and in succession sealed into the bulbs on a single carriage, advantageously a rotary spider, which serves to convey the mounts and the bulbs, to the sealing-in po s'r tion and then tocon'vey the sealedin vessels to a position where they are exhausted and also if desired filled with gas, all without being changedin position on the spider which is preferably actuated step by step.
  • a rotary spider which serves to convey the mounts and the bulbs, to the sealing-in po s'r tion and then tocon'vey the sealedin vessels to a position where they are exhausted and also if desired filled with gas, all without being changedin position on the spider which is preferably actuated step by step.
  • chine serving to carry out this process and replacing the sealing-in machines and ex-. hau'st machines hltherto used can be so built that the lamps to be finished pass along a:
  • Figs. 1 and 2' show the. mach1ne in dia-.
  • Fig. 3 shows the exhaust tube of a Figs. 4 and 5show in elevation and plan the mechanism for actuating the devices for .a vertical section through a releasing and gripping the exhaust tubes set in the heads; k
  • Figs. 8 and 9 show in elevation and in top "iew a rotary preheating and sealing-in burnery
  • Fig..10 shows a vertical "section through a valve which responds to leaky lamps and .causesthem to be sealed off automatically be'- fore they interfere with the operation of the" vacuum pump;
  • Fig. 11 shows ona larger sc ale'the sealing I off torch and discharge fork in the sealingoff position.
  • the machine preferably made with a rotatable spider or turret, and adtantageously rotated .step by step, has, inthe example shown, twenty-four working positions which are marked-11 to 24in Fig. 2. Til the 'posi* tions 1 or 2 ,vthe mounts and bulbsare put in their respective/holders; inpositiofn 3 the bulb is lowered 'into place. over the mount;-
  • the machine consists, as in the usual rotary exhaust machine, of a central stationary valve-seat a and a rotatable spider having a flat rotary valve I) fitted on the seatand fixed to a rotary shaft c.whi ch extends through the. stationary valve seat.
  • the rotary valve has ports (Z arranged in a circle and corresponding in number to the working positions of the machine, which in each revolution of the splder successively .register with parts'in the valve seat a connected to the variouspipes leadlng into the stationary valve seat to establish connections through the valve with the atmosphere, the exhaust pumps, not shown, a compressed a1r reservoir, and also with a reservoir of inert gas for filling the lamps.
  • the ports 03 of a the rotary valve 6 terminate radial tubes f -which open at their outer ends into theex- I I tube or flare k which has its outer end flared into a flange, the exhaust tube k being longer.
  • Each exhaust heady consists as shown in Fig. 3, of a tubular boss 9 into whose central cylindrical bore, somewhat enlarged at the upper end, there is set a tubular rubber stopper I having conical upper and lower ends and fitted between two pressure rings 1 Z advantageously made of metal and each ,having a conical recess which fits the adjoining end of the stopper Z.
  • the rubber stopper l and the cooperating metal rings l and Z have coaxial central bores so as to receive the small exhaust tubelz. on the. stem 71. of the mount it. Pivotedon the upper pressure ring l 'of the rubber stopper on pivots Z are cen-' tering jaws l for centering the exhaust tube 72.? and, having inclined cheeks Z.
  • the centering jaws are embraced by a tension ring Z? which has atapered bore eooperat'mgwith .the inclined cheecks of the centering jaws and which is slidably mounted in an outer sleeve 9 of the ,head to be under the influence of a spiral spring I set into the head'and tending to hold the ringagainst the upper end g of the sleeve 9
  • two rods m are slidably mounted in grooves 180 apart on the head.
  • cap m is turned in such a direction that its inclined slots m pull down the pins m and with them therods m and the pressure ring Z the rubber stopper is compressed between the stationary pressure ring Z and the movable pressure ring Z until the walls of the bore of the rubber stopper bear in their entire or almost entire length tightly against the exhaust tube k of 'the mount as a result of the conical end surfaces of the stopper cooperating with the corre spondingly conical recesses in the rings Z and Z so that not only is the exhaust tube 72. connected airtight to the tube f opening into the head 9, but at the same time the mount is held fast in its position.
  • the pressure ring Z is pulled down theclamping jaws 1 car-' ried by it and also the tension ring Z are simultaneously moved downward.
  • the tension ring Z follows this downward movement however only for a part of the way, as
  • the rotati'onof cap mt necessar for clamp positions of the spider, preferably in positions 1 and 2.
  • positions 1 and 2 there arearranged vertically below the heads two rotatable and vertically movable keysn in two-stationary bosses n, which have upwardly sloping but relatively displaced bayonet slots n for controlling the guide pins n on the keys.
  • To the lower ends of the keys are fixed pinions n, which are in constant engagement with the teeth of an off set double rack a The latter is at every step of the rotation of the machine moved lionce to the left and right through a pivoted lever n actuated by a cam disc n controlled by themachine drive.
  • each key At the upper end of each key are two lugs n, which, when the keys are 1n the high position, engage correspondingly arranged lugs m of cap m and carrythem along in the direction of rotation of the keys.
  • Cap m located to the right and on'the exhaust head at working position 2 has, on the contrary, by its rotation pulled downthe rods m, and thereby automatically brought the rubber stopper 1 and the centerin 'aws 1 into the clam in osition so that the 'new mount previously inserted by the attendant has in this working position 2, its exhaust tube clamped fast simultaneously with the release of the sealed off exhaust tube in position 1.
  • the attendant can-also each time, after the release and .removalof the sealed off exhaust tube end, insert, at working position 1, a new mount into'the open rubber stopper, which then, when the head reaches the working position 2, is clamped fast automatically in the working position 2 during the release of the next following sealed off exhaust'tube end.- Whilst the heads still remain in the two working positions 1 and 2 shown, the rack moves, as shown by the arrows, into the right hand position.
  • Thekeys n acting on the heads need not necessarily be placed in two adjacent working positions of the machine.
  • the key which effects the clamping in of the newly inserted mount may, for example, be placed in working position 3 or 4;
  • Each bulb holder consists ofa bulb holding fork i fixed to the upper end of a vertically movable rod 6
  • Each rod i is slidably mounted in a fixed guide 1' which travels with the machine and is, during the time in which the heads and the holding forks travel through the sealing-in and exhaust positions, held in its lower position by a flat stop spring i fixed to-the guide 2' to enter an upper holding notch in the rod 2' in which position the bulb is setin the holding fork, encloses the mount it.
  • the rods 71 Shortly before orduring the introduction of the bulbs into the holding forks the rods 71 are automatically raised so that they introduction of the bulbs can cause .no damage to the mounts h set simultaneously or shortly beforein the rubber stopper sy 1.
  • a vertically (lisp aceable pull rod 79 which carries at its upper end a spring controlled pawl 2
  • This pull rod is also actuated once by the drive of the machine at every stoppage of the spider, and is advantageously first pulled downand then pushedup.
  • the pawl 12 engaging with a notch z" of the rod 2' carries along the rod by forcing back the pawl like spring i until at the end of the downward movement the pawl like spring '5 again snaps into the upper notch of rod 11 and thereby secures the rod, together with the holding'fork, in the low position.
  • the gears 1' 1* rotated by the machine drive are always automatically stopped .when the spider is making a partial rotation to move' the holding devices with the mountsand bulbs from one position to the next, and stop in such a position that the bulbs pass unhindered through the tube forks and do not strike against one or the other tube forks.
  • the gears are stopped by a locking gear, which acts on the vertical shaft 1'? of gear 7*.
  • the locking gear consists of a locking wheel skeyed on shaft 1", a spring influenced locking pawl s and an actuating pawl 8
  • the latter carries a roller 8 which runs on a cam disc s kept in continuous rotation by the machine drive.
  • this roller 8 runs on the raisedcam part of'disc 8 with the result that the actuating pawl s takes the position shown in dotted lines and the looking pawl s is also pressed into the dotted line position against the actionof spring 8
  • the locking wheel 8 is thereby released and during thestoppage of the machine renders possible a rotation of shaft 1" of the toothed wheels 1", r, r and of the-tube forks g together with tlie burners g
  • the roller runs off theraised cam part, and the spring 8 comes into action and presses the pawls s s into the positions shown in full lines.
  • the locking pawl s then prevents afurther rotation of the gears and holds the tube forks fast in a definite position ⁇ vhich allows free passage to the bulbs.
  • the upper ends of the rotatable burner feed tubes g open into fixedly supported stufling boxes 9 into which gas is continually fed from a common source of supply.
  • the tube forks g are advantageously arranged sothat they ca be adjusted in height.
  • the tube forks g are screwed into the upper stationary framebox g? of every fork a sleeve g which receives the tube 9 and on the upper flange rim g of which there rests a connection g of tube with the interposition of a ball hearing 9.
  • a pin and slot connection is provided between it and the tube.
  • the adjustment in height of the burner flames can also be produced byarranging the burner nozzles to 'be adjustable.
  • Such adjustable burner'nozzles can also he used with tube becomes possible by adjustment of the tubeforks and a fine adjustment of the same by the movement of the. burner nozzles.
  • the outer sleeves g of every head is, shortly before the introductionpf every bulb into the first sealing-in posit on 4, raised so far that the narrower neck part 9 of the sleeve connecting with the end g 'em-' braces the exhaust tube 71. with the leading in wire -t and that the flange g of the sleeve comesto bear on the stem k of the mount.
  • the flange of the outer sleeve 9 then forms during the'sealing-in process a support for I the stem of the mount so that the/mount cannot be fused into the bulb in a slanting position.
  • the raising of the outer sleeve 9 ' is effected by means of a roller 9 arranged on the lower rim of the sleeve and which, before the head, together with the mountand bulb reaches working position 4', runs onto a stationary cam g of the machine. It is advantageous to so form the upper surface of the curved cam g that sleeve 9 is at first only partly raised and. is completely raised only shortly before coming into the second sealing-in position 5. Before the head leaves tlie last sealing-in position 8, the separation ofthe superfluous bulb neck iseifected close below-the stem h? at the sealing zone.
  • a separated bulb neck k drops down and remains suspended on the outer sleeve 9 as shown "in dotted lines in Fig. 3.
  • the roller 9 Shortly after the last sealing-in position 8 the roller 9 again runs off the stationary cam g", causing an automatic lowering of the outer sleeve g with a release of the protected exhaust tube.
  • the superfluous bulb neck is hanging to the outer sleeve is automatically destroyed by two stationary checks at forming a narrow passage through which the upper part of the head passes in its travel from working position 8 to working position 9.
  • the outer lead wires t secured to the inner end of the stem tube andextending down along the exhaust tube are automatically raised into a horizontal position, so that later on these wires are not in the way when the exhaust "tube is closed by fusion in the sealing-off positions and are not fused off.
  • a lead wire bender comprising two double hooks w set to be tangential to the exhaust tube k of a mount in a head 9 and displaced relative to each other.
  • These hooks may be mounted on stationary supports w so as to swing towardand away from. each other and thus supports 10. can, as shown, be'placed on the segment-like heating oven w-extending over the exhaust positions 11 to 23, or in any other desired manner.
  • every lamp'is in the manner known in rotatable exhaust apparatus, connected several times to a pro-vacuum pump and to several fine pumps and automatically conne ted if desired to gas filling receptacles. hould a lamp have become damaged, perhaps by a defect in the sealing-in process, it
  • This automatic sealing off of the defective lamp is controlled by'a valve 3 which is placed at .Working position 11 at the entrance to the oven and is in communication with that conduit of the stationary valve seat a which leads to the rough or pre-vacuum pump.
  • This control valve g which is responsive toa leaky lamp conslsts, as seen 111 F1g. 10, of a closed casmg, containing two flexible diaphragms or membranes fl/ 3 mounted on opposite sides of a partition y in the casing.
  • the two membranes form the outside walls of'two chambers 7 3 separated from each other by the partition 3 and are in communication with one another through a port in the partition controlled by a valve :1 on a stem 3 which extends through the intermediate partition 3 1
  • the valye y ordinarily shuts oif the chambers 3 3 from each other, so that the combustion gas or combustion mixture fed to chamber 3 by conduit 1 cannot flow into chamber 1 and from this through conduit y to a sealing ofl' burner 3 mounted in the heating oven in position to fuse the exhaust tube of a passing lamp.
  • the lowermost chamber y of the control valve is formed by the casing and'the lower membrane fi and is connected b conduit y with the prevacuum pump, and y conduit 3 through the rotary valve (1, b of the machine, with the interior of the lamp which is in the working position 11.
  • Theuppermost'valve chamber y isformedby the casingand theupper membrane 3 and is connected with a constant vacuum which may be one of the fine vacuum pumps, by the tube 6 I conduit 3
  • In thehppermost chamber there may be further provided to advanta e a spring a which by pressure on the upper-- most membrane y presses the valve disc 3 tightly to its seat.
  • the different outer sleves g of the heads have, cooling jackets g which are continually traversed by a cooling liquid, for example water.
  • the cooling liquid is advan- 'tageously fed through each cooling jacket 9 as shown in Fig. 1, by a supply-or distributing tube g and a discharge conduit 9" which delivers the cooling liquid to a collecting trough 2 advantageously displaced relativeto each other by 180, which, as soon'as the delivery through a conduit fork has been'pushed forward, seal of! the exhaust tube close to the stem.
  • the lamp resting on the delivery fork but still dependent from the bulb holding fork i canthen be conveniently lifted out by the operator and deposited in a collecting container.
  • the'sealed-oif and detached lamp can also be automatically lifted from the bulb holding fork i and be automatically deposited.
  • the lamp resting on the delivery fork automatically drops into a converyorduct arranged beside the delivery fork.
  • the delivery fork ara-dially movable to the machine is provided with a spring'catch'whioh catches and turns up any dependent lead wire during the forward movement of the delivery fork.
  • the catch may consist for example, as shown, of a single arm lever 2 which is ordinarily held byfa spring, 2 against a stationary stop 2' and which carries at the forward (1 a'hook shaped spring a". In the forward movement of the fork a the bend .of the spring z strikes against-the 'exhaust tube 71.
  • the number of working posltions on the machine maybe smaller or larger, accord ing to requirement,
  • the sealing-off of the lamp can be done in two working positions instead of in one working position, and that in such manner, that in the first sealing-off position the exhaust tube is anerely fused shut, and then is entirely melted through in the second working position.
  • the mode of movement of the sealingdn burners can also be done in various wa s'. Then too the means for bending over the le ding in I wires and for the sealing-off of the lamps may 1.
  • the method of manufacturing incandescent lamps and similar articles comprising a bulb and a mount havin anexhaust tube, which consists in holding t e mount and carrying it bodily along a predetermined path b means of said exhaust tube, placing the bu b over the mount at a.
  • a hermetieally sealed evacuated device comprising aglass vessel formed by sealing together two glass parts, one tubulated with an exhaust tube, and then exhausting the vessel, which consists in holding the tubulated part in predetermined position Jey said exhaust tube only, and continuing to hold the tubulated part in said position by the exhaust tube while the other part is brought intosealing in re'- lation. to it and said tubulated part is sealed into'said other part and then exhausting the sealed vessel so formed through said tubulatedbpart while it is positioned by said exhaust tu e.
  • an exhaust head comprisi g a tubular boss, a tubular ,rubber stopper in. said boss for receiving an exhaust tube, and centering jaws concentric with the bore of said stopper and movable radially thereof to grip an exhaust tube and centenit in said stopper.
  • an exhaust head comprisirtg a tubular boss, a tubular rubber stopper in said boss having conical ends, a compression ring at each end to'be movable radially of the bore of saidstop-per to center an exhaust tube in said to bring each head into working positions m of said stopper and each ring having a conical recess to coo erate with the conical end of said stopper an said rijn s being movable toward each other longitudinally of said stoper tocompress said stopper and constrict its.
  • an exhaust head comprising a tubular rubber stopper having a conical end, a' ring having a conlcal recess engaging said end of 531d stopper, and movable toward the other end of said stopper to compress said stopper and its bore, and centering jaws pivoted on said ring QPP y 8.
  • an exhaust head comprising a tubular boss, a tubular rubber stopper in saidboss, center-v ing jaws mounted in said boss tomove radially of the bore of said stopper and having cheeks inclined tothe bore hf said stopper, and a tension ring concentric wth said stopper and movable'longitudinally thereof and having inclined surfaces to engagewiththe inclined cheeks of said centering jaws to close them, and a spring tending to move said ring into position to permit said jaws to open.
  • a frame a member mounted thereon to move step by step and having an exhaust head and a valve for controlling the connection of said head to an exhaust pump
  • said head comprising a tubular boss, a tubular rubber stopper in said boss,- means movable longitudinally of said head for compressin said stopper to constrict its bore and a rotatable cap on the lower end of said head for actuating by its rotation said stoppercompressing means, and a rotatable key mounted insald frame to register witln sald head and to move yertically into engagement cap while said withsaid cap to rotate said member is stationary.
  • I 10 In a machine of the character described the combination of a frame, a member mounted on said frame rotatably and provided with a plurality of exhaust heads and a'valve' for controlling the connection of said heads to an exhaust pum eachhead comprising a verti-' cal tubular oss having therein a tubular rubber stopper, means for compressing said.
  • stopper to constrict its bore
  • a rotatable cap on the bottom of each head for actuating said means to compress said stopper,-'driving means for rotatingsaid member step by step succession
  • two rotatable and verticall movable keys mounted on said frame at ad jacent'workingpositions to register with the 7 caps on said exhaust heads in said positions
  • an exhaust head comprising a fixed tubular boss, a tubular rubber stop per in said boss and a water jacketed sleeve movably, telescoped on said boss to substantially enclose the upper part of said boss and its contained rubber stopper when said sleeve is lowered.
  • a rotatable member having a plurality of work holders, each comprising an exhaust head and a cooperating bulb fork in alignment with said head, and a valve for automatically controlling the connection of said heads to an exhaust pump during the rotation of said member, driving means for rotating said member step by step, and means controlled by'said driving means for autoposition and subsequently at a succeeding position lowering the'bulb fork to bring the bulb into place, over the mount held in the exhaust head.
  • an intermittently rotatable member having an exhaust headand a .bulb fork mounted in alignment with said head on a vertically reciprocating rod, driving mechanism for rotating said member, a reciprocating push rod mounted to align with said rod when said rotary member is-stationary, a resilient catch forh olding said lifter in either of two extreme positions, and push rod actuating means controlled by said driv- 'matically moving each bulb fork away from .lllS cooperating exhaust head at 'the loading 30 and move ting mechanism for moving said ush rod into one extreme position when sai bulb rod is in registry with it and thereby moving said bulb older away from the exhaust head,,and for positivelymoying said push rod to the other extreme of its position'in another positiori of said member-to permit said bulb hold; er to return to its initial position, and thereby place the bulb over a mount in said exhaust head.
  • sealing-in burners mounted adjacent the path of each i 2 exhaust head and bulb fork in position to seal a mount in said head into a bulb held in said bulb fork, auxiliary burners mounted adjacent said sealing-in burners and at a position further along the path of said seale d-in bulb to keep plastic the joint between the stem and the bulb While the head is in said position, and means actuated by said driving mechanism to raise said bulb fork while said head IS in said position and said joint is plastic e bulb slightly away from the exhaust head and thereby stretch and work the plastic joint.
  • a rotatable me her, a mount holder and a bulb holder onsai member sealing-in burners adjacent the path of said holders to seal the mount into a bulb
  • double fingers mounted adjacent and tangentialto the path of said mount holder to oscillate into and out of operative relation to the exhaust tube, and to enterbetween the exhaust tube and leading-in wires parallel l 66 thereto, said fingers being shaped to displace said leading-in wires away from the exhaust said member, burners mounted adjacent the path of said member to seal the; mount into a bulb, a sealing off burner mounted adjacent the path of said member to seal ofi the exhaust tube in said mount holder, fork mounted adjacent the sealing ofi burner and'having a resilient stop mounted to catch and bend back any leading-in wire parallel to the exhaust tube, and means for moving said delivery fork toward'and away from the exhaust tube in said holder.
  • a rotatable member provided with exhaust heads and a valve for controlling the connection ofsaid head to a vacuum pump, of age through one of said heads comprising a leak responsive valve comprising twochamhers each containing a partition, a valye 1n said partition, a flexible membrane dividing each chamber into two parts, ⁇ the other part being connected to the vacuum pump and the inner parts connected to a gas supply, where by a variation in pressure due to a leak through one of said-exhaust heads will move said membranes and thereby open a sealing ofi' burner supplied from said inner parts and. mounted in position to seal ofi the defective exhaust tube.
  • a delivery means responsive to leakthe valve in said partition and permit gas to flow and 23.
  • a bulb holder on said member'to suspend a bulb with its neck over a mount held in said head,'sealing-in burners mounted adjacent the path traversed by said exhaust head during the first part of its travel to seal the mount in said head into the neck of a bulb in said'holder, and means responsive to movement of said member for automatically exhausting the sealed in bulb through the bore of said head after it is beyond range of said sealing in burners and while it is traversing another part of its path.
  • a combined scaling in and exhaust machinefor incandescent lamps and similar devices a movable carrier, a tubular exhaust head on said carrier for holding and making an air ti ht connection to the exhaust tube of the ,tubulated part of alamp, a holder associated on said carrier with said head to hold the untubulated part of the lamp in sealing in relation tothe tubulated part in said head, seaIing in burners adjacent one part of the path of said head, exhaust means controlled by said carrier, and actuating means for moving said carrier to carry said head into and out of range of said burners during one part of its travel and then to connect it to said exhaust means during a subsequent part of its travel.
  • a combined scaling in and exhaust machine for incandescent lamps and similar devices comprising a rotatable spider, a tubular exhaust head on said spider for holding and making an air tight connection to the exhaust tube of a tubulated mount, a bulb holder associated with said head to hold a bulb in I cannncarn or connect on.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
US60585A 1924-10-31 1925-10-05 Method and machine for manufacturing incandescent lamps and similar articles Expired - Lifetime US1710428A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE242303X 1924-10-31

Publications (1)

Publication Number Publication Date
US1710428A true US1710428A (en) 1929-04-23

Family

ID=5915356

Family Applications (1)

Application Number Title Priority Date Filing Date
US60585A Expired - Lifetime US1710428A (en) 1924-10-31 1925-10-05 Method and machine for manufacturing incandescent lamps and similar articles

Country Status (4)

Country Link
US (1) US1710428A (enrdf_load_stackoverflow)
FR (1) FR602834A (enrdf_load_stackoverflow)
GB (1) GB242303A (enrdf_load_stackoverflow)
NL (1) NL20115C (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494923A (en) * 1948-09-03 1950-01-17 Gen Electric Method and apparatus for bending and exhausting tubular lamps
US2816579A (en) * 1953-02-27 1957-12-17 Westinghouse Electric Corp Presealing flush machine for incandescent lamp bulbs
US2829941A (en) * 1956-05-17 1958-04-08 Sylvania Electric Prod Getter flashing
US2861861A (en) * 1951-11-13 1958-11-25 Rca Corp Gas pressure testing and control apparatus
US3021878A (en) * 1956-09-17 1962-02-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Exhaust machine for lamp and radio bulbs and the like
US3776025A (en) * 1971-01-04 1973-12-04 Gen Electric Exhaust machine leak detector and shut off
CN109085024A (zh) * 2018-09-14 2018-12-25 陕西理工大学 一种流水线间断式自采样装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494923A (en) * 1948-09-03 1950-01-17 Gen Electric Method and apparatus for bending and exhausting tubular lamps
US2861861A (en) * 1951-11-13 1958-11-25 Rca Corp Gas pressure testing and control apparatus
US2816579A (en) * 1953-02-27 1957-12-17 Westinghouse Electric Corp Presealing flush machine for incandescent lamp bulbs
US2829941A (en) * 1956-05-17 1958-04-08 Sylvania Electric Prod Getter flashing
US3021878A (en) * 1956-09-17 1962-02-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Exhaust machine for lamp and radio bulbs and the like
US3776025A (en) * 1971-01-04 1973-12-04 Gen Electric Exhaust machine leak detector and shut off
CN109085024A (zh) * 2018-09-14 2018-12-25 陕西理工大学 一种流水线间断式自采样装置

Also Published As

Publication number Publication date
GB242303A (en) 1926-01-21
NL20115C (enrdf_load_stackoverflow)
FR602834A (fr) 1926-04-01

Similar Documents

Publication Publication Date Title
GB499413A (en) Improvements in or relating to machines for making electric incandescent lamps or the like
US1710428A (en) Method and machine for manufacturing incandescent lamps and similar articles
US2237186A (en) Sealing apparatus
US2434664A (en) Sealing-in machine
US2494872A (en) Method and apparatus for bending tubular glass articles
US2575746A (en) Sealing-in machine for tubular double-ended lamps
US1920528A (en) Process of reclaiming electric lamps and bulbs
US2403073A (en) Method and apparatus for gas filling and tipping-off envelopes
US1832039A (en) Glass working machinery
US2153370A (en) Apparatus for sealing electric lamps and similar articles
US2212842A (en) Machine for sealing-in and molding lamp bulbs
US2494923A (en) Method and apparatus for bending and exhausting tubular lamps
US2265381A (en) Exhaust machine
US2288537A (en) Sealing machine
US2794699A (en) Manufacture of small lamps
US2857712A (en) Quartz lamp sealing machine
US2565126A (en) Cathode mount making apparatus
US1736767A (en) Method of making incandescent lamps
US2273445A (en) Method and machine for sealing vitreous vessels
US1945769A (en) Method of sealing off
US1989897A (en) Sealing-in and exhausting apparatus
US1338782A (en) Coating apparatus and method of coating
US1569185A (en) Machine and method for sealing incandescent lamps
US3047166A (en) Lamp transfer and inverting apparatus
US1735027A (en) Apparatus for producing double-walled glass containers