Patent ID: 7137328

Claim:
A metal working machine comprising: a frame adapted for resting upon a horizontal support surface, said frame including at least two vertical stanchions and a horizontal support member extending between said vertical stanchions, said horizontal support member being positioned adjacent to a top end of said vertical stanchions; an arm member pivotally coupled to said frame, said arm member having a first end and a second end, said arm member being pivotally coupled to said frame at a pivot location between said first and second ends; a hydraulic cylinder having a piston selectively extendable from said hydraulic cylinder, said hydraulic cylinder being operationally coupled to said frame, said piston being operationally coupled to said arm member toward said first end in a manner such that extension of said piston from said hydraulic cylinder pivotally moves said first end of said arm member away from said frame and moves said second end of said arm member toward said frame; wherein a first portion of said arm member is located between said pivot location and said first end and a second portion of said arm member is located between said pivot location and said second end; a shear blade mounted on the first portion of said arm member for shearing materials against said horizontal support member when said piston is retracted into said hydraulic cylinder; a punch assembly mounted on the second portion of said arm member and a punch mating assembly mounted on said frame member, said punch mating assembly being aligned with said punch assembly such that said punch assembly engages said punch mating assembly when said first end of said arm member is moved away from said frame by said piston; a second horizontal support member mounted on and extending between said two vertical stanchions for supporting the piece of metal being worked; a ram member mounted on the first portion of said arm member and extending downwardly from said arm member toward said second horizontal support member for transferring a force from said arm member to a workpiece positioned on said second support member; means for adjusting a height of said second horizontal support member to adjust a distance between said second horizontal support member and said arm member.