Apparatus for producing mounts for pictures or documents

Apparatus for cutting substantially planar cardboard blanks to produce picture mounts with interior rectangular picture framing cut outs having edges beveled inwardly toward a picture viewing aperture without producing visible corner over cuts or under cuts, comprising in combination:

• means for mounting a cardboard mount blank and releasably clamping said blank in a fixed position while cutting out said interior rectangular cut outs,
• a cutting head carrying a cutting blade thereon,
• means for mounting said cutting head and moving said cutting blade in a first longitudinal direction of the rectangular cut outs and in a second transverse direction of the rectangular cut outs with the blank clamped in said fixed position and with said cutting blade being disposed at an inclined angle with respect to the planar cardboard blanks at least during movement of the cutting head over said blank to cut said beveled edges about said picture viewing aperture wherein the edges meet one another in corners defining the rectangular cut outs and severing completely a portion of the cardboard blank, thereby producing the picture mount, and
• cutting head control means for establishing a length of overcut to define the corners, which overcuts extend beyond the picture viewing aperture to produce said corners without visible overcuts or undercuts, the length of the overcut being a variable function of the respective thickness of the mount blank and the magnitude of said inclined angle.