Verge Escapement
The verge (or crown wheel) escapement is the earliest known type of mechanical escapement, the mechanism in a mechanical clock that controls its rate by advancing the gear train at regular intervals or 'ticks'. Its origin is unknown. Verge escapements were used from the 14th century until about 1800 in clocks and pocketwatches. The name verge comes from the Latin virga, meaning stick or rod.
Its invention is important in the history of technology, because it made possible the development of all-mechanical clocks. This caused a shift from measuring time by continuous processes, such as the flow of liquid in water clocks, to repetitive, oscillatory processes, such as the swing of pendulums, which had the potential to be more accurate. Oscillating timekeepers are used in all modern timepieces.
Read more about Verge Escapement: Verge and Foliot Clocks, Verge Pendulum Clocks, How It Works, Disadvantages, Decline
Famous quotes containing the word verge:
“The ability to get to the verge without getting into the war is the necessary art.... If you try to run away from it, if you are scared to go to the brink, you are lost.... We walked to the brink and we looked it in the face.”
—John Foster Dulles (1888–1959)