One of eighty-six early incandescent lamps. Carbon
One of eighty-six early incandescent lamps. Carbon filament lamp, single filament make up of 2 straight carbon ? at top. Attached to lead in wiries drilled carbon cylinder. Lead in wiries sinlge piece bent platinum both passsing through one stem of red glass. Bulb clear, unusual shape, tapering, smallerratings at top than new base, with long panelled neck. Top pip. Cappal with writer leaved brass semicylinders surrounding neck, each solderd to one lead in wire. Gerard Lamp 1885 on stuck label (probably not original) also bearing number 1912192. No ratings given. Filament broken, bulb broken at neck but held together by cup.
- Object Number:
- carbon filament lamp
- Institution of Electronical Engineering
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