| 摘要 |
System of use in plates in which the piston has a displacement according to a system of inclined planes giving rise to a displacement orthogonal to it in the jaw holder (chuck) in such a manner that the mandrel 1 has a disc 2 provided with a stop projection 3 for the piston 5 and a cut (recess) 4 on its lateral surface, there being located in said cut 4 an eccentric projection 8, of the lower base of a cylindrical body or cam 9, the piston 5 having cuts 10 in correspondence with the projections 3 of the disc 2. <IMAGE>
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