Metal deforming – By or with work-constrainer and/or manipulated work-forcer – Comprising lever manipulated to force work
Patent
1998-03-09
1999-08-10
Jones, David
Metal deforming
By or with work-constrainer and/or manipulated work-forcer
Comprising lever manipulated to force work
72479, B21D 700
Patent
active
059341386
ABSTRACT:
The present invention provides tools and methods for bending angle stock, a tool including first and second parallel facing plates and a third plate holding the first and second plates in a fixed position. The third plate is fixed to upper edges of the first and second plates, and the first and second plates are separated by a gap sized to receive a side of the angle stock. The first plate has a back surface to which is attached an end of a rod-shaped handle. A bend in the angle stock is made by first cutting one side of the angle stock at a desired bend point on the other side and then placing two of the tools on the uncut side, one on each side of the desired bend point. The handles of the tools are pushed together to form a 90.degree. bend in the angle stock, which is formed because the edges of the first plates that are adjacent to the desired bending point have a 45.degree. angle. With this edge, a right-hand tool contributes a 45.degree. bend and a left-hand tool contributes a 45.degree. bend for a total of 90.degree.. The third plate has a surface co-planar with the angled edge of the first plate, and contact between the right-hand and left-hand tools at this surface stops further bending, thus forming a 90.degree. bend. The third plate thus serves as a stop for determining that a 90.degree. bend has been completed, and the first and second plates grip one side of the angle stock.
REFERENCES:
patent: 4315422 (1982-02-01), McBride
patent: 4619132 (1986-10-01), McBee
patent: 4934175 (1990-06-01), Hensler et al.
patent: 5564302 (1996-10-01), Watrous
Sales catalog from Techline Mfg. located in Spanish Fort, AL 36527 entitled "Precision Raceway, Tubing Supports, Instrument Stands, Tubing & Wire
Enron Corp.
Jones David
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