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The Self Winding Clock Company (SWCC) was a major manufacturer of electromechanical clocks from 1886 until about 1970. [1] Based in New York City, the company was one of the first to power its clocks with an electric motor instead of winding by hand. A patented clock mechanism automatically rewinds the main spring each hour by the small ...
A battery charger, recharger, or simply charger, [1] [2] is a device that stores energy in an electric battery by running current through it. The charging protocol—how much voltage , amperes, current, for how long and what to do when charging is complete—depends on the size and type of the battery being charged.
The trademark was granted with a registration date of October 12, 1926 and assigned registration number 0219268. [3] The trademark is still active as of the last renewal date of February 17, 2017. In 1968 [ 4 ] General Time Corporation, consisting of the Westclox and Seth Thomas brands and the Westclox operation in Canada, was acquired by ...
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In 1887, the company reorganized under the new name Western Clock Company and again went bankrupt, and F. W. Matthiessen reorganized it in 1888 as the Western Clock Manufacturing Company. In 1908, the company received a patent for the "Big Ben" alarm clock movement.
The master clock has a conventional self-winding clock mechanism that is rewound electrically. The slave clock mechanism is not a conventional clock mechanism as it consists only of a ratchet wheel and time train. Slave clocks rely upon electrical impulses from the master clock to mechanically move the clock hands one unit of time.
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