One of eighty-six early incandescent lamps. Arch

One of eighty-six early incandescent lamps. Arch filament, quiet stiff. No filament supports. Filament cemented into platinium (?) tubes crimped over leading - in wires passing through a short single stem. Round bulb, with short neck fitting into flared glass tube and attached by plaster (now loose) wires brought out to brass strips bent up side of glass tube. Top pip, no base, Manufacturer unknown, no rating given.

Details

Category:
Lighting
Object Number:
1923-173/86
type:
carbon filament lamp
credit:
Institution of Electronical Engineering

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