[Larger plate.]

[2499]. Bevil gear, with roller teeth in one wheel of the pair.

[2500]. Circular rack and pinion gear. The rack can revolve independently of the vertical movement.

Section 85.—TRANSMISSION OF POWER.

(See also [p. 192].)

[2501]. Hydraulic transmission by two motors (rotary), see [Section 75], one of which is the driver and the other the driven motor connected by two pipes, through which the oil or water is kept in circulation from one motor to the other.

Section 86.—TANKS, CISTERNS AND RESERVOIRS.

(See also [p. 192].)