| 摘要 |
Reciprocating blade system for knives, employed in order to achieve a highly effective cutting action without dragging upon the object to be cut. The invention concerns a reciprocating blade system for knives characterized by a blade with curved or arc-shaped cutting edge capable of oscillating or swinging relative to the support whereto it is fixed by any means enabling said movement such that the cutting edge can operate a reciprocating rolling movement on the object to be cut when the handle is pushed backwards and forwards in the manner of a standard knife. In the embodiment represented in FIG. 1, the blade ( 1 ) has an arc-shaped cutting edge ( 5 ) and is fixed to a support rod ( 3 ) extended by a handle ( 4 ), through a pin ( 2 ) which enables its oscillation along the arrows ( 7 ) and ( 7 bis). Thus, by setting the curved surface ( 5 ) of the blade ( 1 ) which forms the cutting edge and by pressing it on the object to be cut, a reciprocating movement imparted to the handle ( 4 ) along the arrows ( 8 ) and ( 8 bis) as with any knife, is sufficient for causing the curved and cutting part ( 5 ) of the blade ( 1 ) to roll above it in one direction then in the other along the arrows ( 7 ) and ( 7 bis) and cut with higher efficiency and without pulling the object to be cut. The blade ( 1 ) comprises a stop ( 6 ), which will brake its reciprocating movement at each stroke end in both directions, so that the cutting edge ( 5 ) always remains in contact with the object to be cut and prevent the blade ( 1 ) from partly or completely overturning.
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