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Triple-pole changeover time-switch, 1930-1960

Triple-pole changeover time-switch, 1930-1960

1930-1960
Ferranti Time Switch

Ferranti Time Switch

1910
Differential time switch

Differential time switch

Ferranti time switch

Ferranti time switch

'Reflex' programmable time-switch, synchronous motor model, by Reflex, Industri AB, Järfälla, Stockholm, Sweden, patented in 1952.

'Reflex' Programmable time-switch, synchronous motor model

1952
Example of early Horstmann electric tumbler time-switch with solar dial, for street lights, by Horstmann Gear Company Ltd., thought to be English, 1870-1938.

Example of early Horstmann electric tumbler time-switch with solar dial

1870-1938