Lever 1 is rigidly attached to pinion 2 which turns about fixed axis A and meshes with gear rack 3 of sawhead 9. Sawhead 9 slides along fixed guides a-a. Circular saw blade 4 rotates about axis B and is powered by a flexible drive consisting of pulleys 7 and 8 and flexible link 6. When lever 1 is turned counterclockwise, sawhead 9 travels to the left and advances saw blade 4 to stock 5 to be cut. When lever 1 is turned clockwise, the saw blade is retracted from stock 5.
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