| 摘要 |
1,002,100. Nuts; bolting. KEARNEY & TRECKER CORPORATION. Feb. 20, 1964 [Aug. 20, 1963], No. 7096/64. Heading F2H. [Also in Division B3] An indexable machine tool head is locked by bolts 451, the heads 447 of which engage a shoulder on the head. The bolts are actuated by nuts 453 rotated by a fluid-pressure operated rack 460. |
