Patent ID: 6409161
Filing Date: 2002-06-25
Classification: B25B

Abstract:
In a two station machining device having a stationary jaw secured on the work surface of a housing between two movable jaws, and having a pair of spaced slides connected to said movable jaws and reciprocable in a recess in said housing beneath said work surface for moving the movable jaws between open and closed positions with respect to said stationary jaw, the improvement comprisinga piston in said recess extending between said slides with one end thereof secured to one of said slides, and with the other end thereof sealingly slidable in an axial bore in the other of said slides, resilient means normally retaining said slides and said piston in first limit positions in which said movable jaws are in said open positions, and operating means for supplying hydraulic fluid under pressure to said bore in said other slide and operative initially to move said piston and said one slide relative to said other slide, and into second limit positions in which the jaw connected to said one slide is moved to its closed position, said operating means being operative after said piston and said one slide have reached their second limit positions, to cause said other slide to be moved relative to said piston to a second position in which the jaw connected thereto is moved to its closed position relative to said stationary jaw.