Gear 1 rotates about fixed axis B and meshes with gear 10 which rotates about fixed axis A. Gear 10 is connected by turning pair C to slider 5 which moves along slot a of slotted lever 6. Lever 6 turns about fixed axis 0 and is connected by turning pair D to link 7 which, in turn, is connected by turning pair E to gear 4. Gear 4 meshes with fixed gear rack 9 and gear rack 3 which is rigidly attached to planer table 2. The position of rack 3 with respect to table 2 is adjusted by screw 11. When driving gear 1 rotates, table 2 reciprocates with different times for the forward (cutting) and return strokes. Table 2 travels at a velocity twice that of point E. The stroke length of table 2 can be changed by adjusting crankpin C with slider 5 along slot 8 in gear 10 and clamping it in the required position.
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