Member 1, rotating freely about fixed axis A of shaft 2 has a face-type ratchet wheel with teeth a. Rigidly mounted on shaft 2 is member 3 which turns about axis y-y. Pawl b of member 3 engages face teeth a and member 1 rotates together with shaft 2. Member 3 is actuated by spring 4. Upon reversal of the rotation of shaft 2, pawl b slides along the inclined surfaces of teeth a and member 1 stops rotating.
$453$SL,C$