Metal deforming – With means to actuate both elements of tool-couple – Handle actuated
Patent
1997-10-30
1999-03-09
Jones, David
Metal deforming
With means to actuate both elements of tool-couple
Handle actuated
72451, 7245315, B21J 918, B21D 700
Patent
active
058786171
ABSTRACT:
A power assisted crimping tool is disclosed particularly suited to crimping and dimpling of structural steel decking and roofing panels together. The invention comprises a frame supporting a pair of jaws which are opened and closed by means of a toggle linkage that is driven by an operator-controlled pneumatic cylinder. The input pivot of the toggle linkage is constrained to move linearly by means of a cross head formed in the frame which, in turn, causes the jaws to move in unison rather than one jaw moving against the other. According to one embodiment, the jaws are provided with a plurality of punch and die sets disposed in opposite orientations, such that as the decking or roofing panel joint is crimped by the jaws, the punch and die sets raise a plurality of dimples having alternating orientations. The alternating dimples provide a substantial increase in the lateral resistance (shear strength) of the crimped seam, thereby obviating the need to additionally weld or screw the seam to provide the necessary shear strength.
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Jones David
Titus John D.
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