Mine machine light

Details Mine machine light Mine machine light

1977-07-25

1979-06-19

Engle, Samuel W.

Illumination

Guard means

339119L, 362 89, 362164, 362367, F21V 1500, H01R 1360, F21L 700, F21V 2300

Patent

active

041588800

ABSTRACT:
The light has an explosion-proof housing that is of generally triangular transverse section, with no glass on the narrow front or top wall. In mine use, should rock drop onto the housing it is likely to strike glass parts only a glancing blow. The glass parts are arranged to be resiliently sealed to the cast or fabricated metal body of the housing, but be removable from the outside, so a broken glass part need not cost a whole light fixture. A spring resiliently supports the outer end of the bulb upon the housing to cushion against mechanical jolts.

REFERENCES:
patent: 2413381 (1946-12-01), Rylsky
patent: 2752480 (1956-06-01), Priebe
patent: 3569692 (1971-03-01), Johnson
patent: 4069415 (1978-01-01), Dacal

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