1978-02-06
1980-11-11
Gilden, Leon
113 58, B21D 1900
Patent
active
042326214
ABSTRACT:
A metal-working hand tool for folding over sheet metal flanges is provided that effect folding over without harming the flange surface. The tool includes a body adapted to rotate about a first axis, a structure for attaching the body to a power source for rotating the body about the first axis, a guide component extending outwardly from one end of the body along the first axis, a plurality of hardened metal rollers, and a shaft associated with each roller for mounting each roller for free rotation about a second axis fixed with respect to the body so that the rollers will impact upon and roll with respect to a sheet metal flange. In use, the metal flange of the metal joint to be closed is disposed generally vertically, the power source is energized to rotate the body, the guide component is disposed so that it is in a direction generally parallel to the flange, and the guide component is moved into contact with a side of the joint while moving the tool generally horizontally along the direction of elongation of the flange so that the rollers impact upon and roll with respect to the flange to deform it so that it extends generally horizontally.
REFERENCES:
patent: 1360071 (1920-11-01), Alseth
patent: 2017099 (1935-10-01), Kuzel
patent: 2998738 (1961-09-01), Crine, Sr.
patent: 3015293 (1962-01-01), Parham
patent: 3195492 (1965-07-01), Erickson
patent: 3487669 (1970-01-01), Kemp
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