Segment gear 1 turns about fixed axis A and meshes with gear rack a belonging to slider 2. Slider 3, having rod 6, moves along slider 2. Spring 5 is mounted on rod 6 between slider 3 and lug e of slider 2. Pawl 4 turns about fixed axis B. When segment gear 1 is turned clockwise, links 2 and 3 and spring 5 travel to the right as a unit with gear rack a. This motion continues until tooth b of link 3 runs against tooth d of pawl 4. After this, rod 6 will have a dwell until lug e raises pawl 4, releasing slider 3 which moves rapidly to the right due to the action of compressed spring 5. Rod 6 is returned to its initial position by turning segment gear 1 counterclockwise.
$2507$LrG,D$