Brocot Escapement

-A form of pin-pallet escapement invented by Louis-Gabriel Brocot, which, when fitted visibly in front of the dial of 19th-century French or American clocks, forms an interesting feature. The pallets are made from cylindrical pins of cornelian or steel. The diameter is slightly less than the distance apart of two escape-wheel teeth, the non-acting half of each pallet being cut away to give clearance. The locking is against the highest point of each semicircular pallet face. Impulse is given on the quarter-circular face from the highest point to the lower lip of the pallet. The escapement can be made dead-beat by cutting the locking faces of the escape wheel tangential to a circle drawn about the axis of the pallet staff, or the escapement may be made with slight recoil by cutting the escape-wheel teeth radial to its axis. The operation of the Brocot escapement is similar to the dead-beat.- Klockit (website) -A type of deadbeat escapement using semi-cylindrical pins.- British Watch & Clock Maker's Guild (website) NOTES: 1. Also known as 'Brocot pin-pallet escapement' or simply 'pin-pallet escapement' EXAMPLE: -Brocot (or pin-pallet) escapement - A type of deadbeat escapement invented by A. Brocot in the early 19th century. Used mainly in 19th-century French clocks, it features pallets consisting of cylindrical hardstone or steel pins.- Judith Miller. The Illustrated Dictionary of Antiques & Collectibles. 2001, 2. Achille Brocot (1817-1878) is a Parisian horologist and inventor of a pin-pallet escapement and of the pendulum-suspension system that bears his name.