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By the 20th century, interchangeable parts and standardized designs allowed the entire clock to be assembled in factories, and clockmakers specialized in repair of clocks. In Germany, Nuremberg and Augsburg were the early clockmaking centers, and the Black Forest came to specialize in wooden cuckoo clocks. [2]
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.
Clocks can be simple display objects if they are not required to run. This reduces the physical force on the clock. Whereas "running any functional object will result in wear and handling, which contributes to the degradation of the parts. Replacing the inner workings of a clock still requires handling, which could potentially damage the clock.
Prior to 1880, Joseph Henry Eastman served as an apprentice watchmaker to Edward Howard, founder of E. Howard & Co. After serving his apprenticeship, Eastman would become one of the founders of Harvard Clock Company, which was granted a Massachusetts’ Certificate of Organization on November 20, 1880, starting as co-director alongside James H. Gerry.
Eli Terry was using interchangeable parts using a milling machine as early as 1800. Ward Francillon, a horologist, concluded in a study that Terry had already accomplished interchangeable parts as early as 1800. The study examined several of Terry's clocks produced between 1800–1807. The parts were labelled and interchanged as needed.
One of the last series of modern clocks were the "Swing Timers", a group of at least 18 inexpensive all plastic clocks produced in the late 1960s, and designed by Arthur Umanoff Associates. Umanoff also designed Plexiglas floor and wall clocks, a series of wood clocks called "Natural Classics", and "Day Timers" (plastic wall clocks with day and ...
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Many parts were gradually improved to increase isochronism, and eventually the fusee became unnecessary in most timepieces. The invention of the pendulum and the balance spring in the mid-17th century made clocks and watches much more isochronous, by making the timekeeping element a harmonic oscillator , with a natural "beat" resistant to change.
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