Slaves
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Slaves
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Slaves were connected in series with the Master clock. The number of slaves was limited by the maximum voltage to use in a system, c. 60 volts. For bigger installations one or more "subtransmitting relays" and/or a "Distribution Board" was used.

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BELOW: Slave from the Gent clock system in the Cadbury Chocolate Factory.
14" dial with Parsons Patent Mk I. C9 movement. c.1910.


Fig. C24 Cast iron outdoor slave with double locked movement.
Weight:80 pounds, diameter: 24", coil resistance 8 ohms, made around 1930.
During restoration, it became obvious that the Company didn't cast these clocks themselves;
"PUL-SYN-ETIC" and "ELECTRIC" are bronze labels that were put in the mould before casting.

 

Silent triangle movement.
12" dial, c. 1935.
Earlier versions had a vertical movement, in the beginning even with a bellows to further reduce the noise.


Various seconds slaves:

TOP: 1930th, 50 ohms.
MIDDLE: 1940th,
8,5 ohms.
BOTTOM: 1950th,
3000 ohms, parallel,
24 volts polarized.


 

Site created: December 2002
Last update: September 2007