Figure 11-23.-Bendix-Weiss universal joint.
Figure 11-24.-Classes of cams.
Face cams have a groove or slot cut in the face to
groove determines the name of the cam, for example,
provide a path for the roller. They operate a lever or other
the square cam.
mechanism positively in both directions. The roller is
guided by the sides of the slot. Such a groove can be
CLUTCHES
seen on top of the bolt of the Browning .30-caliber
A clutch is a form of a coupling. It is designed to
machine gun or in fire control cams. The shape of the
connect or disconnect a driving and a driven part as a
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