The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 1978
Filed:
Sep. 23, 1974
Jozef T Franek, Chorleywood, GB;
Metal Box Limited, Reading, GB;
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.