Metal working – Means to assemble or disassemble – Overedge assembling means
Patent
1990-04-30
1992-01-28
Crane, Daniel C.
Metal working
Means to assemble or disassemble
Overedge assembling means
72319, 72323, 72450, B21D 500, B21D 2903
Patent
active
050833553
ABSTRACT:
An apparatus and method for forming a hem on an edge of a sheet metal member including an anvil attached to a columnar support structure that also includes a cantilevered bracket that is the support for a movable hemmer bracket to which a hemming steel is attached. By the utilization of a pair of crank arms, the hemmer bracket is movable through a plurality of arcuate paths which permits the hemming steel to perform multiple forming operations on a workpiece held by the anvil. The method includes the steps of partially hemming a sheet metal member, then disengaging the hemming steel contact with the workpiece, then moving the hemming steel to a new location before recontacting the workpiece with the hemming steel.
REFERENCES:
patent: 2569181 (1951-09-01), Laxo
patent: 3058512 (1962-10-01), Chebuhar
patent: 3191414 (1965-06-01), Kollar et al.
patent: 3276409 (1966-10-01), St. Denis
patent: 4411148 (1983-10-01), Aschauer
patent: 4484467 (1984-11-01), Kitano et al.
patent: 4706489 (1987-11-01), Dacey, Jr.
Crane Daniel C.
Utica Enterprises Inc.
VanOphem Remy J.
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