Rotation is transmitted from gear 1 to shaft 7, rotating about fixed axis A-A, by pins 2, disks 3 and 4, and hub 5 which is keyed to shaft 7. Pins 2 engage notches in friction disks 3. Friction disks 4 have lugs which engage corresponding notches in hub 5. The torque transmitted by the clutch is proportional to the total axial pressure applied on the clutch disks by springs 6. Upon overload, disks 3 and 4 slide with respect to one another and shaft 7 stops.
$3402$SmF,C$