Crank 1 rotates about fixed axis A and is connected by turning pair B to link 3 which has gear rack a. Rack a meshes with pinion 4 which rotates about fixed axis C. Pinion 5 is rigidly attached to (or integral with) pinion 4 and meshes with gear rack b of ram 2 of the slotter which slides in vertical fixed guides d-d. Link 6 turns about axis C and is connected by a sliding pair to link 3; it holds rack a in engagement with pinion 4. When crank 1 rotates, ram 2 reciprocates, providing the cutting motion of the slotter.
$2565$LrG,FD$