Search results
Results from the WOW.Com Content Network
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 ...
Sir John Bennett; 65 Cheapside, London, watch, clock and jewellery manufacturer (15 October 1814- 3 July 1897), was a watchmaker and local politician. He was the eldest son of John Bennett, watchmaker, of Greenwich.
Used in watches, the keyless works are the gears that wind the mainspring when the crown is turned, and when the crown is pulled out allow the hands to be set. [8] [9] The term originated because, before the modern form of keyless works was invented by the French watchmaker Adrien Philippe in 1843, watches were wound and set by inserting a ...
Timothy Mason (1695–1734) was a clockmaker based in Gainsborough, Lincolnshire, England.. Mason was known for constructing longcase clocks with eight-day movements, with two keyholes on either side of the dial.
A separate set of wheels, the motion work, divides the motion of the minute hand by 12 to move the hour hand and in watches another set, the keyless work, allows the hands to be set. Escapement An escapement is a mechanism that allows the wheel train to advance, or escape a fixed amount with each swing of the balance wheel or pendulum.
The clock was to be a turret one and would be placed into the university's rotunda. Jefferson provided all of the clock's plans and specifications. According to these plans, Willard precisely assembled all the clock's pieces. The clock was installed in 1827. Jefferson, however, did not live to see the operating clock because he died in July, 1826.
This is the normal standard for hand-wound as well as self-winding watches. 8-Day movements, used in clocks meant to be wound weekly, provide power for at least 192 hours but use longer mainsprings and bigger barrels. Clock mainsprings are similar to watch springs, only larger.
Ansonia clock movement c. 1904. In 1877 the clock company purchased a factory in New York, and moved most of its production there after being spun off from the brass company. Henry J. Davies of Brooklyn, himself a clockmaker, inventor and case designer, joined the newly reconstituted company as one of its founders.