Process for manufacturing various series of plug-in light bulbs

Details Process for manufacturing various series of plug-in light bulbs Process for manufacturing various series of plug-in light bulbs

1991-09-16

1992-12-29

Lindsay, Robert L.

Glass manufacturing

Processes

With sealing off of gas evacuating opening

65 42, 65 5926, C03B 2904

Patent

active

051748029

ABSTRACT:
A process for manufacturing various series of plug-in light bulbs wherein a glass tube used in making a Wedge lamp having an increasing diameter toward one end, inserting two conductive wires and a button rod within this tube integrated with its bottom end by heating, pinching and attaching three filaments to the top portion of the button rod by heating and connecting to the conductive wires with a plurality of tungsten filaments to form a glow portion, inserting a bulb portion over the top end of the tube, then shaping a integral body by heating a lower portion of the tube rod slightly below the bottom end of the button rod, which is fused off by heating, the lower portion of the conductive wires being folded and stuck to the respective outside walls of the bottom end of the tube.

REFERENCES:
patent: 1647999 (1927-11-01), Laskey
patent: 1945769 (1934-02-01), Brumley
patent: 2945327 (1960-07-01), Malm et al.
patent: 2946641 (1960-07-01), Wisner
patent: 3270237 (1966-08-01), Danko
patent: 4749901 (1988-06-01), Demas

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