Device for straight-line slitting and cutting of corrugated paper

Claim 1

Apparatus for slitting elongated webs of corrugated paper moving in the direction of the length of the web comprising, in combination, a rotatably driven shaft having a substantially horizontal axis of rotation, at least one disc knife mounted on said shaft for rotation therewith having a circular cutting periphery, an elongated frame member disposed below said driven shaft having a front upward extending wall terminating in an upper end having a rear linear edge substantially parallel to said shaft axis, said frame member including a rear upwardly extending wall spaced from said front wall in the direction of web movement relative to said frame member and having an upper end, said front and rear walls and said upper ends thereof defining a table for supporting the web to be slit and forming an elongated opening substantially parallel to the axis of said shaft and vertically below said shaft and opening upwardly toward said shaft of a length corresponding to the length of said frame member, said front wall rear linear edge being disposed at a vertical elevation higher than the lowermost portion of said disc knife wherein said knife extends downwardly into said opening, the lowermost periphery of said knife moving in the direction of web movement and said knife periphery being closely spaced to said front wall rear linear edge whereby said rear linear edge supports the web to be slit adjacent the location of initial engagement of said knife periphery with the web.