| 摘要 |
<p>The present invention relates to a seam protecting device which can be applied to drum grinding or raising machines, for preventing threads connecting adjoining pieces to be processed from breaking, characterized in that the device comprises at least a pair of ring-like elements (1), parallel to one another and connected by means of connnecting beams or bars, adapted to turn about bearings (2) and a drum (3) provided with raising or grinding cylinders (4). To the pair of ring-like elements there is applied a cusp element (8) which, under a normal condition, is located at the bottom part of the drum. <IMAGE></p> |
