Western Union self-winding clock

From: Paul Koning <pkoning_at_equallogic.com>
Date: Wed Sep 22 08:24:33 2004

>>>>> "Tony" == Tony Duell <ard_at_p850ug1.demon.co.uk> writes:

>> >>>>> "FaLLnAnGeL" == FaLLnAnGeL <FaLLnAnGeL889_at_aol.com> writes:
>>
 FaLLnAnGeL> Hi, My dad has one of those self winding clocks, and i
 FaLLnAnGeL> was wondering if you could point me in the direction of
 FaLLnAnGeL> finding a wiring diagram for it? thanks for your time
>> Self-winding? Do you mean an electrically powered pendulum
>> clock?

 Tony> It might also be a conventional mechanical clock, normally
 Tony> spring-driven, with a soldenoid and switch to wind it when the
 Tony> spring runs down (smaller clocks of this type were fitted to UK
 Tony> cars in the 1960s, I've had a few across my bench. They used a
 Tony> tension spring (not a flat spiral spring like most mainsprings)
 Tony> and rewound every couple of minutes or so).

>> That could be a Synchronome or something analogous.
>>
>> Not much to it. It's basically a switch connected to a solenoid

 Tony> If it is a syncronome, there are likely to be contacts for
 Tony> slave dials too

No, those are the same contacts. A synchronome has the slave dials
wired in series with the master clock contact and solenoid and the
battery. That's actually a key part of the system, allowing things to
keep going even if the load varies a lot, or the battery is pretty run
down.

        paul
Received on Wed Sep 22 2004 - 08:24:33 BST