Model: X11 German Clock Striking Train
This is a count wheel clock striking mechanism which according to Britten, was invented around 1330 and was later replaced by the rack and snail striking mechanism X12. Both mechanisms use a fan damper to control the speed. Such mechanisms could be found in bell sounding tower clocks and large floor clocks. The input motion in this model is provided by the crank. In an actual system, this regular motion is supplied by the clock escapement as in Models X-1 to X-10. In this respect the combination of the 19th century escapement and striking mechanisms was a mechanical analog of the clock and CPU units of late 20th century computers.

Francis Moon 2001-00-00

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