Method and apparatus for making an improved serrated grating bar

Details Method and apparatus for making an improved serrated grating bar Method and apparatus for making an improved serrated grating bar

1975-07-02

1976-12-14

Larson, Lowell A.

Metal deforming

By use of 'flying tool' engaging moving work

Included in plural deforming stations or passes

72197, B21H 700, B21H 800

Patent

active

039967808

ABSTRACT:
A new and improved serrated grating bar is produced directly from coiled strip workstock by applying torque to a toothed notching wheel to draw the strip between the toothed wheel and a bearing wheel spaced apart a distance less than the width of the strip, and by simultaneously confining the lateral faces of the strip to preclude the metal displaced by the teeth from flowing transverse thereto. Apparatus suitable for this purpose includes a toothed wheel flanked on either side by flat discs which extend radially beyond the teeth, a grooved bearing wheel spaced therefrom a distance less than the width of the strip, and means for rotating the toothed wheel. No separate edgers, flatteners or punch presses are required.

REFERENCES:
patent: 2134526 (1938-10-01), McLaughlin
patent: 3646794 (1972-03-01), Tishken

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