| 摘要 |
745,370. Slipping clutches. DODD, J. Nov. 24, 1953 [Nov. 27, 1952], No. 30112/52. Class 80(2) [Also in Group XXII] An attachment for a poweroperated drilling-machine comprises a cylinder 11 carried by a shank 10, resiliently-loaded clutch members 14 extending through holes in the cylinder wall, and a tapping or studding tool-holding socket 24 journalled in bearings 12, 13 in the cylinder the socket having a driven clutch-part 26 engaged by the clutch members so that the latter yield radially outwards if there is abnormal resistance to rotation of the tool. The exchangeable socket is retained by balls 21 clamped by a sleeve 22. The clutch members may be resiliently loaded by rubber pads 18 or by leaf or blade springs. The pressure of the rubber pads may be adjusted by rotating an outer sleeve 11a formed with slight depressions to receive the outer surfaces of the pads. |
