US1631379A

US1631379A - Sealing-off torch

Info

Publication number: US1631379A
Application number: US643166A
Authority: US
Inventors: Louis A Maurer
Original assignee: General Electric Co
Current assignee: General Electric Co
Priority date: 1923-06-04
Filing date: 1923-06-04
Publication date: 1927-06-07
Anticipated expiration: 1944-06-07
Also published as: FR29308E; GB217207A; DE448571C

Description

June 7, 1927. 1,631,379-

L. A. MAURER SEALING OFF TORCH Filed June 4, 1923 Fig.2.

, Inventor Loui s A. Manx-er,

His Attornev.

hunted June 1,1927.

UNITED STATES 1,631,379 PATENT oar-lea.

Louis a. nausea, or mvme'ron, new masnmassreuoa mo ennnmnmc'raxc comm, a coaroaarrox or NEW Yonx.

ammo-or! 'i'oncn.

Application filed June}, 1928. Serial I0. 648,188.

y invention relates to sealing off the bulbs of incandescent lamps an similar evacuated devices b heating the exhaust tube to fusion near t e bulb, thereby hermet- 6 ically sealing the bulb and at the same time detaching it from the tube, and more particularly to automatic devices for performing this ration of sealing ofi.

One object of my invention is to provide an automatic sealin off device which'will automatically seal 0 a bulb, and also automatically discharge or eject the sealed oil bulb. Another object is to provide a simple and rugged sealing ofi' device which may be operated directly by the movable exhaust head or bythe exhaust spider. A further object is in general to simplify and improve automatic devices of this character.

' In carrying out my invention I provide an-automatic sealing ofi device which, by the movement of the exhaust machine, is set and operated to seal oil the bulb, and is subsequently operated to eject or discharge the sealed ofi bulb. In one form of my invention a bulb fork or holder, is moved bodily to raise the bulb and seal it off, and is afterwards tilted to eject the bulb from the fork. Both the sealing oil and tilting movement of the fork are preferably, thoughnot necessarily, roduced by 9. lug or projection mounted on threxhaust spider, an fork is so mounted that in response to movement of the spider the fork is first moved bodily into sition to receive the bulb, then released to 'ft the bulb, and then tilted to discharge the bulb. The sealed ofi bulb may be discharged in other ways than by tilting the fork, and owing to its sim licity, my invention may be used to a vantage even though the sealed off bulb is not discharged automatically.

My invention will best be understood in connection with the accompanying drawing in which Fig. 1 is a side view-of one form of my sealing 'ofl' device with the parts in position to receive the bulb; Fig. 2 is a view at right an les to the plane of Fig. 1 showing the bub engaging parts of the device in the same position just prior to engaging the bulb; Fig. 3 is a similar view of the same,

parts just after the bulb is sealed off Fig. 4 isa similar view of the samearts with the bulb fork tilted and after the ulb has been discharged; Fig.5 is a section along the line the bulb 55 of Fig. 4; and Fig. 6- is an end view of the parts in the position of Fig. 4 when plupgmatically discharging the sealed oif The exhaust machine may be of the usual type, shown in the United States patents, to Massey 996,936 and to Burrows 1,013,124, and comprises a rotatable exhaust spider 1 provided with exhaustheads '2 of the usual type, each of which is brought in succession into-sealing oif position llzly a step by step movement of the spider. ach head receives .the exhaust tube 3 of a lamp 4 which is to be exhausted. As the spider 1 rotatesjeach lamp is automatically connected in succession to the various exhausted lamp is sealed ofi while it is stationary in the position shown in Fi '1.

The sealing of! device is carrie on a pedestal 5, and comprises. a movable bulb fork 6 for lifting the bulb away from the exhaust tube durin the sealing off operation. This bulb for is mounted so as to be movable toward theexhaust head into osi-' tion to receive'the bulb, as shown in ig. 1. It is preferably mounted on the end of a rod 7 having near the other end a weight 8 which tends to move the fork away from i the exhaust head 2 and thereby seal off the bulb. The rod 7 isjournalledin a yoke 9 which is pivoted to oscillate on a pin 9 about an axis perpendicular to the rod 7. The fork'is moved bodily toward and away from the exhaust head 2 as the'yoke 9 oscil lates. To move the fork automatically I 9 provide means responsive to the movement of the exhaust head and comprising a suitable connection, such as an arm 10 on the yoke'in position to be en ged by an actuating member such as a ug 11 set on the exhaustspider to move the yoke and swing the fork down into position of Fig. 1 as an exhaust head approaches the sealing ofi position and to release the oke sothat the weight 8 will raise the for bodily into the position shown in dotted lines in Fig. 1 as the exhaust head reaches the sealing 'ofl position. The sealing of! burners 12 are supplied with gas through flexible pipes 13 and are mounted to move with the fork and to direct the flamebetween the fork and the exhaust head and upon the exhaust tube 3 at a point adjacent the bulb. As the exhaust pumps through a flat l0 .valve on which the spider 1 is carried. The

tube melts the weight 8 lifts the fork and bulb into the position shown in Fig. 3, thereby scalin off the bulb.

To disc arge the sealedofl bulb I tilt the fork by rotating the rod 7 by some automatic fork tilting means actuated by the driving mechanism of the exhaust machine. A simple and convenient way is to actuate the tilting mechanism from the exhaust spider.

For example, I may mount a crank 14 on the rod 7, and connect it through a link 15 to the actuating means for tilting the bulb fork. I prefer to actuate the tilting mechanism from the exhaust spider, which may conveniently be done by means of a bell crank 16 mounted on the pedestal 5 with one end connectedto the link 15 and its other end in the path of the lugs 11 on the exhaust spider. There is'alug 11 for each exhaust head, and as an exhaust head approachesthesealing-off position that lug 11 which corresponds to the preceding exhaust head catches the end of the arm..10, swings it in a clockwise direction, and the passes out from under it,'thereby moving t e yoke to swing the fork 6 down into the position of Fig. 1, .and then releasing the yoketo permit the fork to move upward and seal off the bulb. During the movement to its.

next position of the exhaust head from which the bulb now in the fork 6 has just been sealed off, the lug 11 corresponding tothat head'strikes and ,moves the. bell crank 16 and connected parts into the position shown in-Fig's 4 and 6,; thereby tilting the fork and discharging the bulb into the chute 19. Further movement of the spider carries the lug 11 out from under the end of the bell crank 16, releasing the tilting ..mechanism, whereupon the bulb fork is returned to its horizontal position by the weight of the link 15 and bell crank 1-6- assisted if necessary by some means such as a spring-17, although usually the spring is not necessary.

It remains in this position until the same 11, which a 'moment beforeactuated the crank 16, strikes thearm 10 and swings the fork 6 down to engage the. bulb in the followin exhaust head, and so on, each lug first tilting the fork 6 to discharge the sealed of bulb which has been carried in the head to which the lug corresponds, and then swinging the fork" Gdown to bring it under the bulb in the following exhaust head.

head for first moving said fork out of normal position toward said head with its open end toward and in the path of an exhaust tube in said head and then as said head reaches sealing off position releasing said fork and leaving it free to return to normal position.

2. The combination of an exhaust head intermittently movable into sealing off posi tion, a bulb fork inregistry with the sealing off position of said head and mounted to rock perpendicularly to the direction of movement of said head with its open end toward the to move in a vertical plane in registry with said head when it is in sealing off position and with its open end facing said head as it a proaches sealing-ofl' position and yielding y held in normal position, and an actuating member movable with said head to engage said fork and move it away from normal position .and toward said head as said head approaches the sealing in .position and to automatically release said fork as said head reaches sealing off osition.

4. The combination ,with a horizontally movable exhaust spider having a pluralit of exhaust heads, a bulb fork mounted ajacent said spider to move vertically in registry with each head with its open end toward..the oncoming head as each head comes in succession into sealing off position and weighted. to remain in normal position, and actuating members on said s ider corresponding in number to said head; and posi tioned to engage and move said fork out of normal position and toward each headas it approaches sealing off position and to automatically release said fork as each head reaches sealin off position. I

5. The combination of a movable exhaust head, a bulb fork mounted adjacent the path of said head to rock about two axes perpen dicular to each other and resiliently held in normal position against movement about either axis, and actuating means for rocking said fork about one axis out of normal position toward said exhaust head and then releasmg 1t to permit return to normal osition and subsequently rocking said fork a ut the other axis after the fork has rocked back about the first axis into normal ',position.'

6. The combination of' an exhaust; head movable intermittently into and out of sealing ofl position, a bulb fork mounted adjacent the path of travel of said head to rock about two perpendicular axes and resilber movable in synchronism with said head to engage and release said rocking member and sald tilting member in succession.

'7. The combmation of an exhausthead movable horizontally, a bulb fork mounted adjacent the path of travel of said head to swing vertically inregistry with said head in sealing off position and weighted to remain in normal position remote, from said head andalso mounted to tilt from its normal positionwith the plane of the fork horizontalinto its discharge position with said I plane inclined to the horizontal, and actuat mg means responsive to the movement of said head to swing said fork vertically downwardtoward the exhaust head, release position. I

8. A sealing ofl:" device "comprising a yoke mounted to oscillate about a hori it, and subsequently tilt it into discharge zontal axis and yieldingly held in' normal position, a bulb fork mounted in said yoke to rock about an axis perpendicular to the axis of said; yoke, means for oscillating said yoke, and fork tilting means for rocking said fork on its axis.

i 9. The combination of an exhaust head movable horizontally, a bulb fork mounted adjacentthe path of travel of said head to move toward said head with the prongs of the fork horizontal and to tilt about an axis parallel to said prongs into its discharge position, and actuat ng means operating in 'synchronism' with said head to move said fork toward the exhaust head and subsequently tilt it into discharge'position. v j

10. A sealing off device comprising a movable yoke, a bulb forkmounted in said yoke to tilt about an axis in the plane of the fork, means for movin said yoke, and fork tilting means for tllting said fork about its axis. i

In witness whereof,'I have hereunto set my hand this 1st dayof June, 1923.

- LOUIS A, MAURER.