One of eighty-six early incandescent lamps. Carbon

One of eighty-six early incandescent lamps. Carbon filament lamp, single-loop filament, no filament supports. Lead-in wires pass through short stem to copper wires other side. Clear tapered bulb, slight shoulder at base.Top pip. Westing house base. (Brass cylinder with circular ridge and groove,plaster attached and insulated, projecting pin for second contact). Maker unspecified but base carries words engraved "Sawye-Man patents"; Westing house concentrated its lamp production through its Sawyer Man subsidiary inthe years around the turn of the century, and it had done this in 1892 to avoid patent problems. No ratings given.

Details

Category:
Lighting
Object Number:
1923-173/50
type:
carbon filament lamp
credit:
Institution of Electronical Engineering
status:
Permanent collection

Cite this page

Rights

We encourage the use and reuse of our collection data.


Data in the title, made, maker and details fields are released under Creative Commons Zero


Descriptions and all other text content are licensed under a Creative Commons Attribution 4.0 licence

Using our data

Download

Download catalogue entry as json

Download manifest IIIF

Our records are constantly being enhanced and improved, but please note that we cannot guarantee the accuracy of any information shown on this website.