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==================================== FOR LARGER DISTR. BOARD IMAGES, CLICK ON: http://mysite.wanadoo-members.co.uk/enlarge/page7.html ====================================Distribution board as mentioned at "Slaves" for six sub-lines, one of which has a seconds impulse. c.1950 BELOW: Interior of the Distribution Board. The milli-amps meter is to set each line (with it's adjustable resistor) to the appropriate current. The switches on the right side are to stop or advance each output line individually.
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Fig. C63 Sub-transmitting relay. To enable a larger number of slaves, controlled by one Transmitter, c.1940. A Distribution board is the same as 2 or more of these sub-transmitting relays with each their own pilot-dial.
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Fig. 1434 Contactor Relay. Service Mains could be employed for operating Sound Signals. This relay, connected in series in the Transmitter circuit is capable to handle the high voltage and current needed. They were for safety reasons mostly used in double-pole pairs. c.1950
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==================================== FOR LARGER WATCHMANS CLOCK IMAGES, CLICK ON: http://mysite.wanadoo-members.co.uk/enlarge/page8.html ====================================Fig.4770, Watchman's electric tell tale clock. 20 channels, 7 days chart. "Slave" edition, c. 1945. The interior picture shows the movement behind the dial and the horizontal one with the gear that drives the drum. Left from the drum the markers. When the watchman, making his patrol, turns his key in one of the contact boxes, this marks the chart, so that a complete charted record is available of all the points visited, and the times they are visited, for examination and investigation of any default.
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Fig. P144f, Bell 220volts operated by a programmer or, like in this case, by a Gent smash glass fire alarm.
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