| 摘要 |
<p>The invention concerns a pair of shears with reduced resistance comprising two levers (A and B) articulated on a hinge (2) forming a cross with, on one side, two shanks (3, 7) capable of being brought together manually, and on the other side, a cutting blade (6) and a cutting block or hook (9). The invention is characterised in that the blade (6) comprises, in at least one of its two side surfaces penetrating into the plant branch, several grooves (12) spaced away from the cutting edge (14), extending over its zone urged in contact with the wood, emerging at least through their proximal end from said cutting edge, said grooves a) alternating with spans (13), b) having a depth and a width enabling them to form in the fibres of the wood cut by the cutting edge a notched part inverse to that of the blade, and c) having a direction such that, when the blade is closed (6) against the cutting block or hook (9), the notch formed in the surface at the tip of at least part of the cut fibres are urged to be pressed by its apices on the spans (13) on the grooves of the blade (3), thereby reducing the surface of the wood in contact with the blade.</p> |
