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Old 29th Jun 2020, 11:00 pm   #25
russell_w_b
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Join Date: Jul 2007
Location: Penrith, Cumbria, UK.
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Default Re: Dry battery longevity

Quote:
Originally Posted by stainless View Post
'I fondly remember the clockwork operated doorbells, where you turned the gong to wind up the spring...'
We had one of those on the outer door when I was a kid. On the inner door we had another mechanical doorbell which was, in effect, a bicycle bell. Didn't need winding up; just a push-rod through the door from the bell-push acting via gears onto a weighted centrifugal mechanism which threw out circular hammers to strike the gong.
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