| 摘要 |
FIELD: tools. SUBSTANCE: the chuck has first handle 1 furnished with first gripper 2, as well as second gripper 3 and second handle 6 linked by step-down gearing 8,9,10, movably installed on the first handle and one of the grippers; the second gripper and the second handle are also linked by additional step-up gearing 15,7; the second handle is linked with both gearings by means of an additionally introduced gear shift mechanism made as differential summing mechanism 6,15,7; step-down gearing 12,13,14 is made disengageable. EFFECT: improved design. 1 cl, 4 dwg |
