Roofing panel notching, shearing, and hemming tool

Details Roofing panel notching, shearing, and hemming tool Roofing panel notching, shearing, and hemming tool

2007-02-06

2007-02-06

Larson, Lowell A. (Department: 3725)

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

Clamp structure constitutes sole initial metal-deforming...

C072S332000

Reexamination Certificate

active

11321230

ABSTRACT:
A notching, shearing, and hemming tool constructed with a table which receives the roofing panel, at least two notching devices (notchers), a pan shear pivotally mounted on the table, and a hemming tool pivotally mounted on the table. To prepare a finished end piece of roofing panel, the roofing panel is placed in a panel alignment section at a first end of the tool. Each of the notching devices is movable, so that the relative position of the two notchers is variable. After notching, the roofing panel is moved to the pan shear, which is set at the proper angle by movement of a lever mechanism connected to the notchers. The roofing panel is sheared along a center line of the notched area. This cut leaves a tongue of the flat pan of the roofing panel exposed on each cut piece. Following the shearing operation, the user is left with two cut panels, each having an exposed tongue section an inch-and-a-half long extending from the pan section. Panels to be used in valleys or at eaves are then hemmed with the hemmer.

REFERENCES:
patent: 6085569 (2000-07-01), Chubb et al.
patent: 6289824 (2001-09-01), Parker et al.

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