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Two-Step Gearing

A system of gearing designed to allow two or more pairs of MILLSTONES to be driven by wind or water. (1) A SPUR GEAR drive, employing an UPRIGHT SHAFT so that two or more STONE NUTS may be engaged with the GREAT SPUR WHEEL - applicable to both wind and water mills. (2) A LAYSHAFT drive, where usually the PIT WHEEL drives a LAYSHAFT on which two or more BEVEL GEARS each take the drive to a pair of STONE SPINDLES. (3) Variants of such drives exist.

Alternative terms

Term	Language	Region
Spur Gear Drive	English