REPEATED-ROTATION DRIVE Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: drive has post 1, mounted on which is driven shaft 2 with rigidly secured positioning plate 3 and gear-wheel 4. Wheel 5, rigidly secured on shaft 6, is engaged with wheel 4. Besides, two-arm lever 7, articulated with advancing links 10 and 11 through connecting rods 18,19, is also secured on shaft 6. Mounted on each of advancing links is pair of pushers 12,13 and 14, 15, cooperating by turns with support plates 16,17,18,19 of springy members (in the form of springs) 20 and 21. Lock has two brackets pivoted to post 1 and controlled by air cylinders. Located on each of brackets is pair of stops for cooperation with support plates 16,17 and 18,19. EFFECT: enhanced reliability of operation. 2 dwg