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The following is a list of American companies that produced, or currently produce clocks. Where known, the location of the company and the dates of clock manufacture follow the name. Samuel Abbott; Montpelier, Vermont (1830–1861) Ansonia Clock Company; Ansonia, Connecticut and Brooklyn, New York (1851–1929)
SWCC Style F Vibrator movement Seven styles of SWCC movement. Styles C and B from 1886 to Style F from 1898. When Self Winding Clock Company started producing clocks, the vast majority of the actual clock movements were made by the Seth Thomas Clock Company and the remainder were made by the E. Howard & Co.
Pages in category "Clock manufacturing companies of the United States" The following 14 pages are in this category, out of 14 total.
The company produced its marine clocks entirely in-house, so these created revenue far more quickly. Under Pearson's guidance, Chelsea made numerous product design improvements, many of which it patented. These included the design for a ship's bell clock having a fully encased chime and striking mechanism, patented in 1900.
These were only made in battery-powered form. Battery-powered clocks have been made using the schemes above with the obvious exception of a synchronous movement. All battery-powered clocks have been largely replaced by the lower cost quartz movement. Quartz clocks
The electric clock market grew rapidly in the 1930s, and Telechron's patented power interruption indicator gave his clocks an advantage over competing synchronous clocks, but by the 1950s battery-operated clocks that weren't dependent on the power grid took market share, and in the 1960s the quartz clock replaced synchronous clocks.