[2359]. Gas engine piston, with three rings and junk rings between them.
[2360] & [2361]. Valve spindle joints without packing or stuffing-boxes, kept tight by cone seatings and set screws.
[2362]. Piston (spring) ring joint, with glut.
Section 59.—PROPULSION.
(See also [p. 134].)
[2363]. Steam and air jet applied to propel a vessel.
Section 60.—MOTIVE POWER. MOTORS.
(See also [p. 136].)