Slides 1, 6 and 7 reciprocate in fixed guides B-B, C and D-D. Connected by turning pair A to slide 1 are two rigidly attached double pulleys 2 and 3. Flexible l inks 4 and 4' run over pulley 2, and are attached at points E and F to slide 6 and at points K and L to the base. Flexible links 5 and 5' run over pulley 3, and are attached at points P and N to slide 7 and at point 0 to pulley 3. When slide 1 reciprocates, slides 6 and 7 also reciprocate but at different speeds which are proportional to the radii of pulleys 2 and 3.
$3550$CFL,ML$