Disks 1 and 4 are keyed to their shafts and rotate about common fixed axis A-A. Engaging collar 2 can slide on the sleeve of disk 4 along axis A-A. Disk 1 has holes a for pins 3 which are press-fitted in collar 2 and pass through holes in disk 4. The clutch is engaged at low speeds by shift ing collar 2 to the left.
$3125$SmC,C$