Clutch housing 1 is keyed to shaft 7 and rotates about fixed axis A. Springs 3 tend to press friction shoes 2 against the inside surface of housing 1. Counterweights 4 balance the moment of the inertia forces of the shoes with respect to axes D. Cross-shaped link 5 is keyed to shaft 8, rotates about fixed axis B, and is connected by turning pairs D to levers 9 to which counterweights 4 and shoes 2 are pivoted. To disengage the clutch, sleeve 6 is shifted to the right along link 5.
$3410$SmF,C$