Method of die-punching holes in paper
OwnerSal Perroneinventor
Life of this patent
Estimating the term…
Abstract
In the operation of hole punching apparatus, a method of changing punched hole formats in paper, for loose leaf binder pages or the like, using cooperating rollers for the male punches and female die members having the various formats embodied therein, so that after the male punches are projected into the female die members for any one selected format for achieving alignment or registration therebetween, this alignment for any other subsequent format does not have to be repeated and only the punches placed in mounting openings on the male punch roller for the subsequent format; the female die members being no problem because they do not, without a cooperating male punch, cause punched holes in the paper.
Claims1
A method of using cooperating male and female die punches to die punch holes in an elongated paper substrate strip of a width size of at least 81/2 inches at selected locations which in number are less than a selected larger number of available locations, said method comprising the steps of:
- (a) locating in a rotatable upper roller of a width as measured along a rotational axis of said roller of at least a selected extent plural male punch die-receiving mounting means;
- (b) locating in a rotatable lower roller of a width as measured along a rotational axis of said roller of at least a selected extent plural female punch die-receiving mounting means;
- (c) selecting as said selected extents of said rotatable upper roller and rotatable lower roller said width of said elongated paper substrate strip to contribute to longitudinal direction tracking of said elongated paper substrate strip in an interposed position therebetween;
- (d) mounting said upper and lower rollers in adjacent relation to form a hole-punching nip therebetween parallel to a rotating axis of said rollers;
- (e) disposing respectively in said die-receiving mounting means at a first selected plural location and in a corresponding number male punch dies in said upper roller and an equal number of cooperating female punch dies in said lower roller;
- (f) rotating manually said upper and lower rollers at different angular velocities until said male punches project into said cooperating female punches;
- (g) confining said upper and lower rollers to the same angular velocity so as to provide said established alignment of said male and female die punches in each rotational traverse thereof;
- (h) punching holes in an elongated paper substrate strip of a width size of at least 81/2 inches at said first selected plural locations and number;
- and
- (i) relocating said male and female die punches in a second location different from said first location in said upper and lower rollers while maintaining said simultaneous rotational mode of said rollers;
- whereby the alignment between said male and female die punches previously established in said first selection is automatically established also for said relocated second location of said male and female die members.
Dependencies are inferred from the claim text.