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A fusee (from the French fusée, wire wound around a spindle) is a cone-shaped pulley with a helical groove around it, wound with a cord or chain attached to the mainspring barrel of antique mechanical watches and clocks. It was used from the 15th century to the early 20th century to improve timekeeping by equalizing the uneven pull of the ...
The following is a list of notable companies that produced, or currently produce clocks. Where known, the location of the company and the dates of clock manufacture follow the name. In some instances the "company" consisted of a single person.
The rack and snail striking mechanism used in repeaters is described in detail in the striking clock article. Repeater clocks often had a cord with a button on the end protruding from the side of the clock. Pulling the cord actuated the repeater mechanism. This was called a pull repeater. Repeating carriage clocks have a button on the top to ...
In 1889, the German company opened a subsidiary in Ponte Chiasso, Como.The Italian subsidiary was run by a German engineer, Ermanno Spindler.In the early years customers were small-sized non-specialist retailers, professional private users and businesses that employed Lechler products largely on iron and wood, e.g. coaches, railway wagons and carriages, tramway cars and furnishings.
In modern mass-produced clocks and watches, the same movement is often inserted into many different styles of case. When buying a quality pocketwatch from the mid-19th to the mid-20th century, for example, the customer would select a movement and case individually. Mechanical movements get dirty and the lubricants dry up, so they must ...
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 first use of pendulums in clocks around 1656 suddenly increased the accuracy of the verge clock from hours a day to minutes a day. Most clocks were rebuilt with their foliots replaced by pendulums, [ 34 ] [ 35 ] to the extent that it is difficult to find original verge and foliot clocks intact today.
The Riefler escapement is a mechanical escapement for precision pendulum clocks invented and patented [1] by German instrument maker Sigmund Riefler in 1889. [2] It was used in the astronomical regulator clocks made by his German firm Clemens Riefler from 1890 to 1965, [3] which were perhaps the most accurate all-mechanical pendulum clocks made.