Figure 11-23.-Bendix-Weiss universal joint.Figure 11-24.-Classes of cams.Face cams have a groove or slot cut in the face togroove determines the name of the cam, for example,provide a path for the roller. They operate a lever or otherthe square cam.mechanism positively in both directions. The roller isguided by the sides of the slot. Such a groove can beCLUTCHESseen on top of the bolt of the Browning .30-caliberA clutch is a form of a coupling. It is designed tomachine gun or in fire control cams. The shape of theconnect or disconnect a driving and a driven part as a11-13
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