Section 40.—GEARING, VARIOUS DEVICES IN (not otherwise classed).

[711]. Conical rotatory gear. Applied to reaping machines. See also Pan Screen, [No. 1264].

[712]. Triangular eccentric, used to obtain a pause of one-third revolution at each end of the stroke.

[713]. Face plate worm gear.

[714]. Double rack and pinion gear.

[715]. Double gear wheels.

[Larger plate.]

[716]. Eccentric gearing; the wheel A being fixed on a crank pin in the driving wheel B, drives the dotted gear at a speed proportionate to the diameters of the wheels A and the driven wheel.

[717] & [718]. Forms of epicyclic or planet gear. Several modes of driving these may be employed by fixing one or other of the three wheels, the other two revolving. See Differential Gear, [Section 31].