Holder 2 of blade a is connected by turning pairs E, F and G to links 3 and 4 and to slider 5. Link 3 turns about fixed axis H. Slider 5 moves along fixed guides b-b. Link 4 is connected by turning pair K to rocker arm 6 of four-bar linkage ABCD. When crank 1 rotates about fixed axis A, holder 2 with blade a has a complex motion which accomplishes the cutting operation.
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