Keyword: "what were lamp switches used for in the early twentieth century" | ClipArt ETC

A single-pole lamp switch commonly used in the early twentieth century. It could control a single circuit or any number of circuits within its capabilities. When the knob (h) is turned to the right, and the connected spring (p) is wound as far as possible, the blade (k) is loosened from the contact tips (s) and thus breaks the circuit.

Lamp Switch

A single-pole lamp switch commonly used in the early twentieth century. It could control a single circuit…