| 摘要 |
A press-riveted two-pen or three-pen finger consists of lower (4) and upper (1) pressed parts, opposite cutting inserted plates (3), rivets (2, 5), special ring plates (6) and a spacing plate (7). It consists of the upper pressed part and the lower one of universal low-carbon steel of the usual quality without further thermal treatment, of which the upper part in the front part is narrowed and bent downwards, the lower detail in the front part is lesser and narrower according to shape thereof in the latter the contour of the upper part is duplicated. A cutting inserted plate with lateral hatches of a blade thereof or without them is riveted to each of the pens of the finger of the parts (the upper and lower one) by one rivet opposite in such a manner that while carrying out complete assembling of the finger the cutting edges of these inserts are directed towards each other and parallel to each other, and the space between them is varying (depending on the thickness of the spacing plate installed).
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