I teceivef an electronic mail asking in regards to the structure of a straightforward twin Spring Nationwide Time Recorder with an built-in clocking in mechanism. As I used to be writing the response I believed “thisight curiosity others….” So. Right here is my response.
I feel I do know the unit you’re speaking about. Each springs drive the clock and the stamping mech which I discovered odd however appeared to be the case as there was a single con rod gearing to 2 wheels both facet. I feel the springs wind in reverse instructions to allow them to use the identical wheel set as much as attain this gear that appears like a chuck key finish. (they’re loop finish springs as I bear in mind).I actually ought to be capable to recall the identify of this conical gear.
At any price, it’s fairly a helpful function as should you disconnect the common joint on this gear each springs energy the clock as the facility has to go someplace and there’s no differential joint or slip clutch to cease the facility reaching the escapement.
The purpose right here is that essential springs on these clocks are huge and laborious to supply, so the power to make use of two half worn springs to drive solely the clock means you will get one other 20 years of time holding, albeit with out clocking out and in of the home each morning.
You may need a unique config as I’ve seen a couple of and the later ones drive off electrical motors, nonetheless, should you’ve acquired the one I feel you will have, then the above is value understanding. It’s additionally fairly good that every one your doing is a disconnection versus a modification, so the historical past of the clock stays intact.
I’ll probabay stick this up as s weblog put up should you don’t thoughts; others might discover it helpful and it saves me explaining it once more. These nationwide time recorders are slightly little bit of our industrial historical past and I feel they shine a light-weight on what it was prefer to go to work on the silk mills right here in Braintree for example. Just about the identical as at the moment besides now you want tons of planet polluting tech to inform your boss what time you arrived.
Good luck with it and carry on clocking. Apologies for any spelling errors – I’m doing this from my cellphone watching TV.
Braintree Clock Repairs