Segment gear 2 rotates about fixed axis A and meshes with pinion 3 which rotates about fixed axis B. Segment gear 2 and pinion 3 have the same number of teeth so that pinion 3 makes one revolution to each revolution of segment gear 2. Pin a of pinion 3 consecutively engages straight , radial, symmetrically located slots d of table 1 which rotates about axis A. To each revolution of segment gear 2 (and pinion 3), table 1 turns through an angle equal to that between the axes of adjacent slots d. Table 1 is locked during its idle periods against unintentional rotation by concentric member 4 which engages two pins b of the table. Pinion 3 and table 1 rotate in the same direction.
$2647$PG,GW$