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. 14, 1976
Filed:
May. 08, 1975
Clyde W Thompson, Tulsa, OK (US);
Other;
Abstract
Apparatus for bending a thin flexible and narrow strip having a flat longitudinally extending base portion and a central longitudinally extending rib projecting upwardly from the base portion at right angles thereto, the upper edge of the rib being sharpened, the strip being of the type adapted to be attached to a printing cylinder and used for perforating or shearing paper sheets being printed, the apparatus being adapted to bend the strip at right angles to the base portion thereof to form a predetermined geometric shape, such as a rectangular shape for cutting rectangular windows in the paper sheets. The apparatus comprises a stationary die mounted on a supporting base. The stationary die is provided with a recess at the lower portion thereof extending around the entire periphery and inwardly into the stationary die a distance slightly less than one-half of the width of the base portion of the strip. A movable die member having a forward flat edge parallel with and movable towards a rear flat edge on the stationary die is provided with a recess extending along a lower portion of the forward flat edge thereof and inwardly therein a distance slightly less than one-half the width of the base portion of the strip and being opposite to the recess in the rear edge of the stationary die. A pair of arms are pivotally connected to the supporting base below and adjacent the side edges of the stationary die, each arm having mounted thereon a slide member adapted to be moved towards and away from the stationary die. A rotatable wheel is rotatably mounted in each slide member on the side thereof towards the stationary die, each wheel having an annular recess therein extending inwardly into the wheel a distance slightly less than one-half of the width of the base portion of the strip, the recess of each wheel being opposite to or in alignment with the recess on the stationary die.