Pawl 2 turns about fixed axis A. When pawl 2 is turned out of engagement with disk 1, the disk is turned by spring 3 about fixed axis B first in one direction and then in the other. Spring 3 is tensioned by turning link 4, carrying sliding locking member 5, from the position shown by dash lines to that shown by continuous lines and back again.
$2725$RG,ML$