UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

stainless · 29th Jun 2020, 10:39 pm

Apologies for off topic - I fondly remember the clockwork operated doorbells, where you turned the gong to wind up the spring (usually when going out the front door); the push button released the mechanism and a rotary hammer struck against the inside of the gong. No battery costs, and you even got a bit of physical exercise as well!

Often mounted on the door itself.

29th Jun 2020, 10:39 pm	#23
stainless Tetrode Join Date: Jun 2006 Location: London, UK. Posts: 70	Re: Dry battery longevity Apologies for off topic - I fondly remember the clockwork operated doorbells, where you turned the gong to wind up the spring (usually when going out the front door); the push button released the mechanism and a rotary hammer struck against the inside of the gong. No battery costs, and you even got a bit of physical exercise as well! Often mounted on the door itself.