High speed enclosed governor with double lift L10 size

High speed enclosed governor with double lift L10 size, No.395

This example of a high speed governor, constructed on the same principle as the Hartnell expansion regulator (see inv. 1888-235), is designed for a colliery over- winding gear. It has four balls or weights placed symmetrically round the spindle, and the whole mechanism is enclosed in a cast iron or steel casing. A pair of large weights lift the sleeve o 5 in. at 200 rev. per min., when their movement is arrested by the enclosing casing. There is also a pair of very small weights which lift the sleeve another oâš«5 in. at 2,000 rev. per min. Similar governors, with one or two pairs of weights, running at speeds from 500 to 2,000 rev. per min., are used for regulating water or steam turbines, etc.