One of eighty-six early incandescent lamps. Carbon

One of eighty-six early incandescent lamps. Carbon filament lamp, 1 long arch filament with support at top with sealing pip. Cement joint to start lenght of platinum wire, item right-angle joint to copper wires attached to internal stem; item platinum wires thought glass, clear bulb - some blackening. Top pip. Non-standard brass cap attached with Plaster of Paris: pronounced flange, with central screw for attaching to holder. Shape suggests Edison lamp, but wrong base and not a bamboo filament. No markings

Details

Category:
Lighting
Object Number:
1923-173/46
type:
carbon filament lamp
credit:
Institution of Electronical Engineering
status:
Permanent collection

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