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Electronic time clock. A time clock, sometimes known as a clock card machine, punch clock, or time recorder, is a device that records start and end times for hourly employees (or those on flexi-time) at a place of business. In mechanical time clocks, this was accomplished by inserting a heavy paper card, called a time card
The next 3 decades saw the development of quartz clocks as precision time standards in laboratory settings; the bulky delicate counting electronics, built with vacuum tubes, limited their use elsewhere. In 1932 a quartz clock was able to measure tiny variations in the rotation rate of the Earth over periods as short as a few weeks. [39]
During World War II, Westclox and other General Time Corporation subsidiaries produced aviation instrumentation and control components, compasses for the United States Army, and clocks for the United States Navy. Westclox became a major manufacturer of fuzes for military ordnance. Clocks for the civilian market stopped production in 1942.
The Hammond clock model "Como" The Hammond Clock Company was founded in 1928 to produce and market clocks that were equipped with Hammond's new motor. The Hammond clock factory manufactured more than 100 different clock models, some simple and cheap, others made from expensive materials such as marble and onyx. [4]
During the 1970s, many of the mechanical clocks were changed to use the electric motors made by the Smith parent company. However, J. B. Joyce continued to operate as a separate company, with mainly heritage work being carried out in the factory up to 2012, when a timed-bid auction was held to sell off surplus equipment, tools, and clock parts ...
Electric Time produces approximately 1000 clocks annually and is the largest maker of custom outdoor clocks in the United States. [2] Electric Time produces tower clocks, post clocks, and bracket clocks. Electric Time has many clock installations throughout the world, ranging from Brazil to Turkey to Europe.
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The first Swiss quartz clock, which was made after World War II (left), on display at the International Museum of Horology in La Chaux-de-Fonds. During World War II, Swiss neutrality permitted the watch industry to continue making consumer time-keeping apparatus, while the major nations of the world shifted timing apparatus production to timing devices for military ordnance.
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