Section 15.—CLUTCHES.
(See also [p. 40].)
[1991]. Coil-grip friction clutch. By the Shaw Engineering Co., Bristol. The coil is of steel, in the form of a spring.
[1992]. Internal grip friction clutch. The internal ring is split at one side and expanded by the oval pin attached to the arm. The latter is usually reciprocated by a sliding sleeve on the shaft (as [No. 282]).
[1993]. Jaw clutch thrown into gear by partial revolution.