3 Terms
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Clock
Any instrument other than a watch for measuring or indicating time, especially a mechanical or electronic device having a numbered dial and moving hands or a digital display.
Industry: Chronometry
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Clock
synchronous clock
Chronometry; Clock
Synchronous clocks were developed in the United States by Henry E. Warren, who obtained his first patent in 1918. There was no general application for this type of clock until alternating-current ...
synchronome clock
Chronometry; Clock
Frank Hope-Jones, in collaboration with George B. Bowell, devised the synchronome remontoire in 1895 after a visit to an exhibition to see an installation of a system of electric clocks devised by ...
sympathetic clock
Chronometry; Clock
A term first applied to Abraham-Louis Breguet's clock, which had a receptacle into which a pocket watch designed for the purpose could be placed in the evening. The clock would then wind and reset ...
sweep second hand
Chronometry; Clock
A hand positioned in the center of the clock that sweeps, in a circular motion, around the dial; also called center seconds hand.
sweep second
Chronometry; Clock
The introduction of the dead-beat escapement enabled the seconds hand of a longcase clock to advance without the slight recoil which is evident with the anchor escapement. This permitted a much ...
suspension spring
Chronometry; Clock
The spring steel strip from which the pendulum is hung. Kinking of the suspension spring through careless handling is the most common cause of a pendulum rolling as it swings.
sharp gothic clock
Chronometry; Clock
An American case style, designed by Elias Ingraham c. 1843 for use with spring-driven movements, and first produced by Brewster & Ingrahams, probably for the English export market. The design was ...
