When slide 1 moves to the right, motion is transmitted through lever 2 to lever 3 which turns freely on shaft 11 about fixed axis A. At this, pawl 4, held in engagement with the teeth of ratchet wheel 6 by flat spring 5, turns wheel 6 counterclockwise together with shaft 11 to which it is keyed. When slide 1 moves to the left, motion is transmitted through lever 7 to lever 8 which turns freely on shaft 11. At this, pawl 9, held in engagement with the teeth of ratchet wheel 6 by flat spring 10, turns wheel 6 again in the same direction. Pawl 4 slides over the teeth of wheel 6 when slide 1 moves to the left. Thus, reciprocating motion of slide 1 is converted into intermittent counterclockwise rotation of wheel 6 and shaft 11.
$2713$RG,ML$