Section 84.—TOOTHED GEARING.
(See also [p. 186].)
[2493]. Circular rack (revolving) and sector, used on governors.
[2494]. Skew worm and wheel gear.
[2495]. Oval gear, linked together.
[2496]. Mitre gear, angle of shafts variable. The two bearings are hinged together on the pitch line of the pair of wheels.
[2497]. Wood-faced spur gear, to run with the wood faces in contact for quietness. The wood faces are renewable, like mortise teeth. See [Nos. 1352] and [1353].
[2498]. Elastic spur gear, to prevent backlash.
