Link 7 rotates about fixed axis A and transmits oscillating motion to link 3 through connecting rod 1. Link 3 oscillates about fixed axis D and is designed as a quadrant. Arc-shaped gear rack 6 slides along guides a-a of link 3 and meshes with gear 2 which rotates about fixed axis E. Circular rack 6 slides freely along guides a-a and is driven by stops 4 and 5 clamped on link 3. The mechanism converts rotation of crank 7 into intermittent oscillating motion with dwells of gear 2. The dwell periods and angle of rotation of gear 2 can be varied by shifting stops 4 and 5 along guides a-a and by adjusting point C of turning pair c along slot b-b of quadrant 3.
$1760$GL,D$