Horizontal metal-extrusion presses

Claim 1

A HORIZONTAL METAL-TUBE EXTRUSION PRESS, COMPRISING: A CYLINDER CROSS-BEAM, A MAIN EXTRUSION CYLINDER SUBSTANTIALLY INTEGRAL WITH THE CYLINDER CROSS-BEAM, A MAIN EXTRUSION PISTON GUIDED IN THE MAIN EXTRUSION CYLINDER, A CROSS-HEAD SECURED IN A RADIALLY MOVABLE MANNER TO THE SAID PISTON, THE CROSS-HEAD BEING FORMED WITH LATERAL WINDOW APERTURES, A PRESS RAM CARRIED BY THE CROSSHEAD, AND PIERCING MEANS, INCLUDING: A PIERCING CYLINDER, A PIERCING PISTON SLIDABLE IN THE PIERCING CYLINDER, A PIERCING MANDREL, MEANS LOCATED IN THE MAIN EXTRUSION PISTON FOR DRIVING THE PIERCING MEANS, AND A MANDREL CROSS-BAR WHICH IS RADIALLY ADJUSTABLE IN RELATION TO THE PIERCING PISTON; AND THE PRESS FURTHER COMPRISING: ARMS EXTENDING FROM THE MANDREL CROSS-BAR AND PROJECTING OUT OF THE WINDOW APERTURES OF THE CROSS-HEAD, STATIONARY ABUTMENTS CARRIED BY THE SAID ARMS FOR LIMITING THE STROKE OF THE MANDREL, AND ABUTMENT BODIES, CARRIED BY THE ARMS PROJECTING FROM THE MANDREL CROSS-BAR, THESE ABUTMENT BODIES BEING SLIDABLE IN THE DIRECTION OF EXTRUSION, AND BEING ADAPTED TO CO-OPERATE WITH THE STATIONARY ABUTMENTS SO AS TO STOP THE ADVANCE OF THE MANDREL CROSSBAR WHEN THE ABUTMENT BODIES MEET THE STATIONARY ABUTMENTS.