Crank 1 rotates about fixed axis A and is connected by turning pair B to slider 6 which moves along slot d of slider 3. Slider 3 moves along fixed guides e-e and is rigidly attached to (or integral with) gear rack a which meshes with gear segment b of link 4. Link 4 turns about fixed axis C and is connected by turning pair D to slider 5 which moves along slot f of slider 2. Slider 2 moves along fixed guides m-m. When driving crank 1 rotates, slider 2 reciprocates. The stroke of slider 2 can be varied by changing the distance C͞D. This is done by adjusting axis D of rotation of slider 5 along guide q of link 4 and clamping it in the required position.
$2446$LrG,ML$