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A grandfather clock (also a longcase clock, tall-case clock, grandfather's clock, hall clock or floor clock) is a tall, freestanding, weight-driven pendulum clock, with the pendulum held inside the tower or waist of the case. Clocks of this style are commonly 1.8–2.4 metres (6–8 feet) tall with an enclosed pendulum and weights, suspended by ...
Mason was known for constructing longcase clocks with eight-day movements, with two keyholes on either side of the dial. They were driven by two weights; one driving the pendulum and the other the striking mechanism. His clock faces were always signed Tim Mason. He was known to be working at an address given as Lords Street in Gainsborough.
The escapement is a mechanism in a mechanical clock that maintains the swing of the pendulum by giving it a small push each swing, and allows the clock's wheels to advance a fixed amount with each swing, moving the clock's hands forward. The anchor escapement was so named because one of its principal parts is shaped vaguely like a ship's anchor.
Prior to 1800 clocks were entirely handmade, including all their parts, in a single shop under a master clockmaker. Examples of these complex movements can be seen in the many longcase clocks constructed in the 16th and 17th centuries. By the 19th century, clock parts were beginning to be made in small factories, but the skilled work of ...
Between 1725 and 1728, John and his brother James, also a skilled joiner, made at least three precision longcase clocks, again with the movements and longcase made of oak and lignum vitae. The grid-iron pendulum was developed during this period. Of these longcase clocks: Number 1 is in a private collection.
In striking clocks, the striking train is a gear train that moves a hammer to strike the hours on a gong. It is usually driven by a separate but identical power source to the going train. In antique clocks, to save costs, it was often identical to the going train, and mounted parallel to it on the left side when facing the front of the clock. [11]
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