| 摘要 |
A circular saw is provided with a disc and tooth holders mounted on the periphery of the disc, with each tooth holder having a pair of legs straddling the disc and fasteners such as a bolt and nut extending through the legs and discs for fastening the holder to the disc. A frusto-pyramidal tooth head having a square outline with four cutting tips is provided on a shank, and the shank extends through a bore having a tangential axis with the periphery of the disc. Shoulders are provided on the body of the holder for abutting the tooth head. |
