| 摘要 |
1,103,289. Cutting tools. VALERON CORPORATION. 16 June, 1966 [21 June, 1965], No. 26827/66. Headings B3B and B3L. A cutting tool comprising a disposable tip 14 and a holder 10, the tip having central aperture 15 to receive a locking pin 16 which extends from the body 10. The tip is positioned in a shouldered recess 11, 12 in the body, the cylindrical end 15 of the locking pin 16 entering the aperture 15 in the tip. The lower end of the pin 16 may be of square cross-section and is located in a corresponding hole 21 in the body. One surface 20 of the lower square portion of the pin is tapered so that the upper end abuts the inner surface of the hole 21 at a position 22 and the lower end of the tapered side is clear of the hole. Screw means 17 engaging the pin at its lower end effects a lever action whereby the pin pivots about the abutment position 22 which forms a fulcrum and the upper end 18 of the pin within the tip aperture urges the lip into clamping engagement with the shoulder 12 of the recess. Alternative forms of screw means are shown in Figs. 3, 4 and 5. |
