| 摘要 |
<p>980,694. Cutting-apparatus. INTERNATIONAL DEVELOPMENT CO. OF NATIONAL DISTILLERS & CHEMICAL CORPORATION S.A. May 1, 1961 [May 4, 1960], No. 15693/61. Heading B4B. A strip 2 of mulch material, e.g. film, thermoplastic material, treated paper or cloth-like material is formed with a plurality of V-shaped notches arranged in parallel rows by means of apparatus which comprises a rotatable idler roll 15 having secured to a flattened portion 16 thereof a T-bar element 17 which is provided with inclined slots 18 through which are arranged to pass inclined blades 53, 54 secured to the flattened portions 51b, 52b of collars 51, 52 mounted on a shaft 50. The shaft 50 is mounted in bearing blocks 40, 41 slidable in mounting blocks 20, 21 and can be raised or lowered by means of a screw 61. The shaft 50 is manually rotatable to move the blades to and from their operative position.</p> |
