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The Self Winding Clock Company clock movement was patented by one of the company founders, Chester Henry Pond (1844–1912) in 1884 (Patent No. 308,521). Pond was also a principal in the Gamewell Fire Alarm-Telegraph Company. [2] He was an accomplished instrument maker and a pioneer in the developing field of electricity.
The Seth Thomas Clock Company was founded by Seth Thomas in Plymouth Hollow, Connecticut, and began producing clocks in 1813. [1] It was incorporated as the "Seth Thomas Clock Company" in 1853. [ citation needed ] Plymouth Hollow, a part of the town of Plymouth, was incorporated in 1875 as the town of Thomaston , named for Seth Thomas.
Salem Clock Company; Hartford, Connecticut; Sangamo Electric Company; Springfield, Illinois (1899–1931) Self Winding Clock Company; New York City, New York (1886-1970) Sempire Clock Company; St.Louis, Missouri (1897-1908) Seth Thomas Clock Company (1807–Present) Sessions Clock Company; Bristol, Connecticut (1903–1969)
A mechanical movement contains all the moving parts of a watch or clock except the hands, and in the case of pendulum clocks, the pendulum and driving weights. The movement is made of the following components: [2] Power source Either a mainspring, or a weight suspended from a cord wrapped around a pulley.
This movement has a "bell-back" design, meaning that the bell mechanism is integral to the clock's case. The company first brought the Big Ben to market in 1909. The company's name was shortened to "Western Clock Company" in 1912. In 1910, the Big Ben became the first alarm clock advertised nationally, with ads placed in the Saturday Evening Post.
After 1866 Mr. Pond developed his principal inventions, among which were the union fire alarm system and the self-winding, electric clock, now in general use throughout the country. Parsons, E. L. (1894), The American Missionary, Volume 48 – Almeda Gardner Girls' Industrial School , American Missionary Association
Common complications include date or day-of-the-week indicators, alarms, chronographs (stopwatches), and automatic winding mechanisms. Complications may be found in any clock, but they are most notable in mechanical watches where the small size makes them difficult to design and assemble. A typical date-display chronograph may have up to 250 ...
A regulator lever is often fitted, which can be used to alter the free length of the spring and thereby adjust the rate of the timepiece. The balance spring is a fine spiral or helical torsion spring used in mechanical watches , alarm clocks , kitchen timers , marine chronometers , and other timekeeping mechanisms to control the rate of ...