Creating lines of weakness in sheet material

Details Creating lines of weakness in sheet material Creating lines of weakness in sheet material

1974-09-23

1978-08-29

Yost, Frank T.

Metal deforming

By use of roller or roller-like tool-element

With cutting of work or product

72206, 83 1, 83 9, 83 51, 83495, 83675, 225 2, 225 3, 225 965, 428 43, B21B 1500

Patent

active

041095006

ABSTRACT:
A slitting machine for longitudinally slitting sheet tinplate to form blanks for can bodies has two parallel horizontal shafts carrying cutter rolls conventionally arranged in pairs of overlapping rolls so as by a shearing action to slit the sheet tinplate driven to pass between the shafts. The shafts also carry further rolls which may be identical to the cutter rolls but are of a smaller diameter. Like the cutter rolls, these further rolls are arranged in pairs; however, by virtue of their smaller diameter they have a small radial clearance. By partially shearing the tinplate they therefore form the tinplate with lines of weakness parallel to the lines of slitting simultaneously made by the cutter rolls. To accommodate the machine to different thicknesses of tinplate the shaft spacing may be adjustable and/or the rolls may be readily removable for replacement by similar rolls of a different diameter.

REFERENCES:
patent: 1091204 (1914-03-01), Ferres
patent: 2053375 (1936-09-01), Nicholas
patent: 2109921 (1938-03-01), Leach
patent: 3205094 (1965-09-01), Erlandson
patent: 3312135 (1967-04-01), Mraz
patent: 3566725 (1971-02-01), Sutyak
patent: 3595455 (1971-07-01), Pace
patent: 3641853 (1972-02-01), Jungbeck

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