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:
Sep. 13, 1977
Filed:
Sep. 21, 1976
Thomas J Reese, Sarver, PA (US);
James R Mortimer, Natrona Heights, PA (US);
Melvin W Tobin, New Kensington, PA (US);
Stephen J Jursa, Saxonburg, PA (US);
PPG Industries, Inc., Pittsburgh, PA (US);
Abstract
This invention relates to a method and apparatus for bending glass sheets in pairs to a so-called double V-bend in which the glass is bent sharply across its width along two lines of sharp bending to form a pair of sharply bent longitudinal extremity portions. The gist of the invention is the application to a sectionalized mold of weighted elongated electroconductive ribbons which are unattached to any mold structure and each of which is readily applied to and removed from positions above the upper surface of the glass sheets mounted on the mold for bending in sliding superimposed relation to a pair of electrodes along lines aligned with the lines of sharp bending. The ribbons are maintained in spaced relation to the glass throughout the bending operation so as to avoid marking the glass. The mold sections terminate at locations along transverse lines aligned with and slightly below the ribbons.