Patent ID: 9108238
Filing Date: 2015-08-18
Classification: B21D

Abstract:
1. A metal cross brake comprising: a first longitudinal angle member and a second longitudinal angle member, said first angle member including a first horizontal longitudinal web member extending from and rigidly connected to a top longitudinal edge of a first vertical longitudinal web member, said second angle member including a second horizontal longitudinal web member extending from and rigidly connected to a top longitudinal edge of a second vertical longitudinal web member, said first and said second horizontal longitudinal web members of said first and said second angle members being coplanar to one another, said first vertical longitudinal web members being held spaced apart from and parallel to said second vertical longitudinal web member by a first weld joint at a first free end of said first vertical longitudinal web member and said second vertical longitudinal web member, and a second weld joint at an opposite second free end of said first vertical longitudinal web web member and said second vertical longitudinal web member having a gap formed there between, said gap being a selected width for acceptance of a sheet of metal having at least one cross bend therein, said gap extending along the entire length and width of an interface between said first vertical longitudinal web member and said second vertical longitudinal web member, said first weld and said second weld bridging and connecting said gap between said parallel edges of said first free end and said second free end of said first vertical longitudinal web members and said second vertical longitudinal web member; at least two pairs of handles spaced apart from one another and disposed at a selected position along said brake, said first pair of handles and said second pair of handles comprising a pair of rods extending perpendicularly upward from a top surface of said first horizontal web member from a top surface of said second horizontal web member respectively in close proximity to one another for gripping simultaneously with a selected hand, and said two pairs of handles are spaced apart from one another in close proximity to be gripped at the same time by a user's two hands; said first weld and said second weld extending from the bottom to the top of said first vertical longitudinal web member and said second vertical longitudinal web member, said weld joints disposed at the distal ends of said first vertical longitudinal web member and said second vertical longitudinal web member providing an effective amount of spring tension between said first longitudinal angle member and said second longitudinal angle member upon compression of said at least two pairs of handles to hold a sheet of material there between; and wherein said gap is of an effective width to accept and hold a sheet of metal for bending at a selected obtuse angle in a single line forming a bent face, and accepting and holding a sheet of metal having at least one bent line for forming a crease and cross bends therewith at a selected orientation with respect to said bent face, wherein formation of said cross bends create a central bulge including crossing ridges which stiffen a face of said sheet of metal to aid in prevention of flexing, bowing, and buckling of said sheet of metal under a load.