A film cutter is provided for use in an industrial process in which a vertical blade and a horizontal blade interact. The vertical blade is mounted to move slidingly in a vertical plane and an end of the vertical blade rests upon the horizontal blade. The horizontal blade is mounted at an acute angle to the vertical blade. In the cutting process, the horizontal blade is moved in a direction that is perpendicular to the vertical blade so as to maintain the acute angle between the cutting edges substantially constant while the cutting intersection moves along the blade length.
1. A film cutter comprising:
a. a first blade that is movable in a first plane and positioned on a first side of a film path of travel;
b. a second blade that is slidably mounted to be movable in a second plane that is perpendicular to the first plane to maintain substantially floating contact with the first blade, the second blade being positioned on a second side of the film path of travel;
c. the second blade resting against a portion of the first blade;
d. the first blade and the second blade each having a cutting edge that is positioned to contact the other when the first blade is moved in the first plane; and
e. the first blade cutting edge and the second blade cutting edge are spaced apart by a smaller distance at a first end than at a second end thereof;
f. whereas the first blade is mounted so as to be moved linearly in a direction perpendicular to the cutting edge of the second blade.
2. The film cutter as described in claim 1 , wherein the second blade is formed with a plurality of slots therethrough.
3. The film cutter as described in claim 2 , wherein the second blade is slidingly mounted to a support by a plurality of fasteners passing through the plurality of slots.
4. The film cutter as described in claim 3 , wherein each of the plurality of fasteners includes resilient retaining means.
5. The film cutter as described in claim 4 , wherein the resilient retaining means comprises a spring washer.
6. The film cutter as described in claim 1 , further comprising biasing means mounted so as to bias the second blade toward the first blade.
7. The film cutter as described in claim 6 , wherein the biasing means comprises a plurality of spring actuated devices.
8. The film cutter as described in claim 1 , wherein the first blade comprises a support platform extending outwardly therefrom in a direction to support the second blade.
9. The film cutter as described in claim 8 , wherein the platform of the first blade is in contact with the second blade at least between sequential cutting motions.