One of eighty-six early incandescent lamps. Carbon
One of eighty-six early incandescent lamps. Carbon filament lamp, single loop filament, attached by deposited carbon joint to short lead in wires in pinched base. Clearbulb, top pip. Bayonet cap with brass contact plates to which leads through glass are soldered. Pronounced flange & brass ring round cap. Cap is black. Attached by plaster. Robertson (etched on glass), 150-8. D.E. (etched on glass) (volts & c.p. ?).
- Object Number:
- carbon filament lamp
- Institution of Electronical Engineering
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