Mechanical Escapements
Contents
Anchor Escapement
Coaxial Escapement Constant Escapement Cross-beat Escapement Cylinder Escapement Daniel's Independent Double Wheel Escapement Deadbeat/Graham Escapement Detent/chronometer Escapement Duplex Escapement Dual Direct Escapement Dual Ulysse Escapement Échappement Naturel (Breguet Escapement) Eleta Escapement Fasoldt Escapement Grasshopper Escapement |
Gravity Escapement
Haldimann Escapement Lever Escapement
Pin-Pallet/Roskopf/Pin-lever Escapement Riefler/Spring Pallet Escapement Robin Escapement Spider Escapement Strasser Escapement Tic-Tac Escapement Ulysse Anchor Escapement Verge and Foliot Escapement Würtz Escapement |
Anchor Escapement
Original
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Strip-Pallet Recoil (Metal Strip Type Escapement)
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Brocot Escapement (pin-pallet escapement)
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Audemars Piguet Escapement
Coaxial Escapement
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Constant Escapement
Cross-beat escapement
Cylinder Escapement
- Thomas Tompion, 1695 and perfected by George Graham, 1726
- Replaced verge escapement in pocket watches after 1700
- Thinner than verge
- High end watches had cylinders of ruby
- mid-19th and 20th century, French made cylinder and escape wheel out of hardened steel solving problem of excessive wear
Daniel's Independent Double Wheel Escapement
invented by George Daniels in 1974
Deadbeat/Graham Escapement
Detent/chronometer Escapement
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Duplex Escapement
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Dual Direct Escapement
Dual Ulysse Escapement
Échappement Naturel (Breguet Escapement)
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Eleta Escapement
Fasoldt Escapement
Grasshopper Escapement
Gravity Escapement
- uses small weight or weak spring to give direct impulse to pendulum
- double three-legged most popular
Haldimann Escapement
Lever Escapement
- Advantage: detached escapement, self-starting
- Cheap, less accurate form: Roskopf or pin-pallet escapement (Gearges Frederic Roskopf, 1867)
Swiss Lever Escapement
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Mueller Lever Escapement
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Pin Wheel/Amant/Mannhardt Escapement
Pin-Pallet/Roskopf/Pin-lever Escapement
Riefler/Spring Pallet Escapement
Robin Escapement
Spider Escapement
created by Phil Abernathy in Parry Sound, Ontario, Canada
Strasser Escapement
Tic-Tac Escapement
Used in French drum clocks with a rigid pendulum
Ulysse Anchor Escapement
- circular silicone frame
- pallet arms are suspended by two buckled blades that are – curved under tension – one perpendicular to the other
- no need for lubrication
- slimmer movement
- less loss of energy
- antimagnetic properties
Verge and Foliot Escapement
Würtz Escapement
Created by Philippe Würtz, 2001