Electric tumbler time-switch

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Electric tumbler time-switch
Manufacturer	(unknown)
Production years	20th century
Production location	(unknown)

Time-switch connected to an electric tumbler switch. The switch is of a type first introduced about 1905.

[edit] How it works

The mechanism of the early time-switch is identical with that of the first Horstmann gas-controller, patented in 1904-5, but in the time-switch the operating crank is connected to an electric tumbler switch instead of to the plug of the gas-cock.

[edit] Memories

Do you remember stories about clocks? Add your memories.

[edit] In the Science Museum's Records

Inv. No: 1938-137