Abstract: The present invention generally encompasses a device for removing waste material from a blank. The invention includes a rotatable stripping pin housing and a stationary cam. The stripping pin housing includes a number of radially extending grooves in its axial surface. Each groove terminates at an aperture located in the stripping pin housing's circumferential surface. A stripping pin apparatus having an radially outwardly extending stripping pin capable of penetrating waste material and an axially extending cam follower is position within each groove. Each cam follower is engaged within a cam track in the stationary cam. The stripping pin housing is placed so that the stripping pins will engage waste material (and not the blank) as the material passes the device. Thereafter, the stripping pin housing is rotated causing the cam followers to travel along the cam track so that the radial location of the cam track determining the radial position of the stripping pins.

Abstract: A cover for a cooking vessel with a strengthened edge comprises a central portion having a downwardly depending skirt with an upper portion substantially the same outer diameter as the cooking vessel, a diametrically inwardly offset lower portion having a doubled wall thickness and a substantially horizontal offset portion formed between the upper and lower portions of the skirt. A method of forming a strengthened edge on a cover for a cooking vessel includes flattening an inwardly rolled bead formed on a cut edge of a downwardly depending skirt of a cover blank, the flattening process forming a diametrically inward offset in the lower portion of the downwardly depending skirt and mechanically sealing the cut edge of the skirt to the lower portion of the skirt.