| 摘要 |
<p>Actuation device for the programming of rotary dobbies for actuating frame heddles in looms, comprising a selection lever (19, 119) rotatable about a fixed pivot (19a, 119a) under the action exerted by pressure beams (27, 28) acting on thrust means (21, 22) articulated to one end of said lever (19, 119) for the purpose of positioning projections (19b, 19c, 119b, 119c) of the selection lever (19, 119) along - or outside - the path followed by the outer end of the lever (9, 10, 110) during one half-revolution, for the purpose of determining - or otherwise - the variation in the position of the frame, said rotation of said lever (19, 119) being effected during the rotation of the shaft (1) and being held by positioning (24, 25, 29, 30) and blocking (31, 32, 34, 134) means associated with said thrust means (21, 22). <IMAGE></p> |
