Anvil jack
OwnerPeter Sandfordinventor
Life of this patent
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Abstract
An apparatus and method are provided for die cutting both sides of paperboard sheets. The apparatus includes a die comprising a plurality of cutting knives projecting from a base, the cutting knives being set into a preselected pattern of grooves within the base. The die further includes a die blade mounted in the base, as well as an anvil, mounted in the base and oriented substantially parallel to the die blade. Securing elements secure at least one of the die blade and the anvil to the base. Manually-actuatable members are provided for adjusting the securing elements for selectively raising or lowering at least one of the selected die blade and the anvil. A back-up plate is provided to which the base is secured.
Claims28
A die for use in an apparatus for die cutting both sides of paper-board sheets, said die comprising:
- (i) a base plate;
- (ii) a plurality of cutting knives projecting from said base plate, said knives being set into a preselected pattern of grooves within said base plate;
- (iii) a die blade which is secured to said base plate;
- (iv) an anvil, which is secured to said base plate, said anvil being oriented substantially parallel to said die blade;
- wherein at least one of said die blade and said anvil is secured in a securing means combination, one supporting element of said securing means combination supporting said at least one of said die blade and said anvil an urging element of said securing means combination urging said at least one of said die blade and said anvil in a downward direction, said securing means combination permitting upward and downward movement of said at least one of said die blade and said anvil relative to said base plate;
- (iv) manually-actuatable means for acting on said one supporting element of said securing means combination for raising said supporting element against the reaction of said urging element for selectively raising said at least one of said die blade and said anvil;
- and
- (v) a back-up plate to which said base is secured.
Dependencies are inferred from the claim text.