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Inline or Swiss lever escapement (blue) and balance wheel (yellow) Animation of inline lever escapement, showing motion of the lever (blue), pallets (red), and escape wheel (yellow) A lever escapement in a mechanical watch. The largest brass circle is the balance wheel.
Pallet fork with jewel pallets (pink) The pallet fork is above the balance wheel in this watch movement. The pallet fork is a component of the lever escapement of a mechanical watch. [1] The pallet fork and the lever form one component that sits between the escape wheel and the balance wheel. Its purpose is to lock the escape wheel, and release ...
The latter escapement has a lever with unequal drops; this engages with two escape wheels of differing diameters. The smaller impulse wheel acts on the single pallet at the end of the lever, whilst the pointed lever pallets lock on the larger wheel. The balance engages with and is impelled by the lever through a roller pin and lever fork.
A Roskopf, pin-lever, or pin-pallet escapement is an inexpensive, less accurate version of the lever escapement, used in mechanical alarm clocks, kitchen timers, mantel clocks and, until the 1970s, cheap watches now known as pin lever watches. It was popularized by German watchmaker Georges Frederic Roskopf in its "proletarian watch" from 1867 ...
The verge escapement consists of a wheel shaped like a crown, called the escape wheel, with sawtooth-shaped teeth protruding axially toward the front, and with its axis oriented horizontally. [ 13 ] [ 36 ] In front of it is a vertical rod, the verge, with two metal plates, the pallets, that engage the teeth of the escape wheel at opposite sides.
The Riefler escapement is a mechanical escapement for precision pendulum clocks invented and patented [1] by German instrument maker Sigmund Riefler in 1889. [2] It was used in the astronomical regulator clocks made by his German firm Clemens Riefler from 1890 to 1965, [ 3 ] which were perhaps the most accurate all-mechanical pendulum clocks made.
After discussions with Moritz J. Grossman he adopted the simple detached pin lever escapement. Listing of the features for the new calibre: 1 Escapement on a platform normally using a pin lever design but possible with a lever or cylinder escapement; 2. No centre wheel but a large barrel; 3. Motion work to hands direct from the barrel arbour; 4.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Pin-lever_escapement&oldid=223803549"
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