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This is an accepted version of this page This is the latest accepted revision, reviewed on 17 November 2024. Type of clock A traditional wind-up (key-wound), mechanical spring-powered alarm clock An alarm clock or alarm is a clock that is designed to alert an individual or group of people at a specified time. The primary function of these clocks is to awaken people from their night's sleep or ...
Ruhla alarm clock b. Winding and setting In order to function as time keepers, and to prevent damage to clockwork, clocks must be regularly wound. An established winding schedule eliminates the threat of over-winding."Traditionally, the job of winding the clocks was given to an horologist or a trained individual.
This is the normal standard for hand-wound as well as self-winding watches. 8-Day movements, used in clocks meant to be wound weekly, provide power for at least 192 hours but use longer mainsprings and bigger barrels. Clock mainsprings are similar to watch springs, only larger.
Westclox Scotland produced its first clock on 21 September 1948; a spring wound alarm with a 4-inch (10 cm) dial. Their Scottish factory was a full manufacturing plant, at which all their clocks were assembled from start to finish with only the basic raw materials being brought in by outside suppliers.
The most common examples are mechanical clocks and watches. Other uses, most but not all obsolete, include: Wind-up toys – often as a simple mechanical motor, or to create automata. These may be either key-wound, as were many 20th-century model trains, or a simpler pullback motor.
His clocks of the period used a grasshopper escapement which malfunctioned if not driven continuously—even while the clock was being wound. In essence, the maintaining power consists of a disc between the driving drum of the clock and the great wheel. The drum drives the disc, and a spring attached to the disc drives the great wheel.
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