| 摘要 |
<p>1508200 Cutting-out apparatus TIMSONS Ltd 4 Nov 1976 [11 Nov 1975] 46458/75 Heading B4B An apparatus for punching out a plurality of notches 30 in an edge portion of a travelling web 28 comprises a pair of rotatable wheels 10, 12 between which a web is caused to pass, the wheels having a plurality of co-operating cutting elements 16 and blades 24 which, in use, punch out a plurality of spaced notches from at least one edge of the web during passage thereof between the wheels, the length of adjacent notches each being of a different extent.</p> |
