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A doorstop (also door stopper, door stop or door wedge) is an object or device used to hold a door open or closed, or to prevent a door from opening too widely. The same word is used to refer to a thin slat built inside a door frame to prevent a door from swinging through when closed.
A pendulum clock is a clock that uses a pendulum, a swinging weight, as its timekeeping element. The advantage of a pendulum for timekeeping is that it is an approximate harmonic oscillator : It swings back and forth in a precise time interval dependent on its length, and resists swinging at other rates.
[2] Lifting a clock via false handles or non-sturdy components may cause these parts to snap off of the clock, potentially leading to the clock falling and smashing on a surface. b. Over-winding or improper hand setting Improper clock winding and hand setting procedures can cause serious damage to clockwork components.
Bracket Clock circa 1700 by Daniel Quare on display at the Walker Art Gallery, Liverpool A bracket clock is a style of antique portable table clock made in the 17th and 18th centuries. [ 1 ] The term originated with small weight-driven pendulum clocks (sometimes called 'true bracket clocks') that had to be mounted on a bracket on the wall to ...
A torsion pendulum clock, more commonly known as an anniversary clock or 400-day clock, is a mechanical clock which keeps time with a mechanism called a torsion pendulum. This is a weighted disk or wheel, often a decorative wheel with three or four chrome balls on ornate spokes, suspended by a thin wire or ribbon called a torsion spring (also ...
Elias Ingraham (1805–1885) opened his own shop in Bristol in 1831 as a cabinetmaker and designer of clock cases. [1] While on a voyage to Caracas, Venezuela in the 1840s, Elias designed the four-column Sharp Gothic steeple clock, which was widely copied by other clock makers and sold so extensively around the world that it is believed to have been the best-seller of any distinctively ...
Ceramic cleats, which were block-shaped pieces, served a purpose similar to that of the knobs except that cleats were generally used in places where the wiring was surface mounted. Not all knob and tube installations utilized cleats. Ceramic bushings protected each wire entering a metal device box, when such an enclosure was used.
Pequegnat was also instrumental in the production of parts for the Franco-American Clock Company whose clocks mimicked the German box or Vienna regulators. [citation needed] The company distinguished itself as a competitor for some of the better American pendulum clocks, such as those made by Seth Thomas. Their clocks often looked like models ...