Paper sheets punching apparatus

A paper punch comprising:

• a base portion having a pair of parallel access slots in said base portion for insertion of a marginal edge of a paper sheets stack in one slot, or alternatively a marginal edge of each of two paper sheets stacks into respective ones of said slots;
• a hole punch mechanism including a punch means extending along at least two parallel rows in said base portion for punching holes in an inserted stack marginal edge, at least one row being juxtaposed to one access slot and at least one row being juxtaposed to another of said pair of access slots;
• and
• means connected to said base portion for simultaneously driving the at least two parallel rows of said punch means through an inserted stack marginal edge.

A paper punch comprising:

• a base portion having a pair of parallel access slots in said base portion for insertion of a marginal edge of a paper sheets stack in one slot, or alternatively a marginal edge of each of two paper sheets stacks into respective ones of said slots;
• a hole punch mechanism including a punch means extending along at least two parallel rows in said base portion for punching holes in an inserted stack marginal edge, at least one row being juxtaposed to one access slot and at least one row being juxtaposed to another of said pair of access slots;
• means connected to said base portion for simultaneously driving the at least two parallel rows of said punch means through an inserted stack marginal edge;
• further comprising three parallel rows of the punch means in said base portion and including means for variously rendering one of said rows of said punch means inoperable while the other rows of said punch means are operative, so that a various spaced orientation of holes of a predetermined number may be punched alternatively in a paper sheets stack marginal edge dependent on which row of punch means has been rendered inoperative;
• wherein one row of said rows of punch means are accessed by a paper sheets stack marginal edge through one of said slots and the other rows of said rows of punch means are accessed variously by another paper sheets stack marginal edge through the other of said slots;
• wherein said rows of punch means are commonly driven by a single crank extending between two of said rows of punch means;
• and
• in which said crank includes a hand-operated lever pivotally connected to said base portion and connected by a four-bar linkage to said punch means.

A punching apparatus comprising:

• a base portion;
• a first hole punch mechanism in said base portion and accessible to a first stack of paper sheets insertable along a first linear edge of said base portion for punching a first hole pattern in the first stack of paper sheets;
• a second hole punch mechanism in said base portion and accessible to a second stack of paper sheets insertable along a second linear edge of said base portion for punching a second hole pattern in the second stack of sheets;
• a punch operational crank pivotally connected to said base portion;
• means interconnecting said crank and each of said hole punch mechanisms for independently punching the first and second hole patterns in any stack of paper sheets inserted into said hole punch mechanisms at said first and second linear edges, respectively;
• and
• wherein said first hole punch mechanism includes a series of vertical punches for providing round holes and wherein said second hole punch mechanism comprises an elongated vertical punch blade having a spaced series of independent punch elements of rectangular cross-section positioned on a bottom edge thereof for punching rectangular holes;
• and wherein said means interconnecting said crank and each of said hole punch mechanisms comprises a four-bar linkage.

A punching apparatus comprising:

• a base portion;
• a first hole punch mechanism in said base portion and accessible to a first stack of paper sheets insertable along a first linear edge of said base portion for punching a first hole pattern in the first stack of paper sheets;
• a second hole punch mechanism in said base portion and accessible to a second stack of paper sheets insertable along a second linear edge of said base portion for punching a second hole pattern in the second stack of sheets;
• a punch operational crank pivotally connected to said base portion;
• means interconnecting said crank and each of said hole punch mechanisms for independently punching the first and second hole patterns in any stack of paper sheets inserted into said hole punch mechanisms at said first and second linear edges, respectively;
• wherein said first hole punch mechanism includes a linear series of vertical round punches and said second hole punch mechanism includes a vertical blade having a spaced series of integral punch elements of rectangular cross-section;
• and in which said base portion includes an elongated linear horizontal die plate having a linear series of round apertures juxtaposed to said first linear edge to receive the linear series of vertical round punches and rectangular apertures juxtaposed to said second linear edge to receive the elongated vertical blade having a spaced series of integral punch elements of rectangular cross-section formed on a bottom edge thereof;
• an elongated linear vertical plate upstanding from said die plate between and parallel to said series of round apertures and said series of rectangular apertures;
• and
• wherein said means interconnecting said crank and said hole punch mechanism is pivotally mounted to said vertical plate.

A paper punch apparatus comprising:

• a base portion;
• a hole punch mechanism including a series of vertical punches in said base portion and accessible to a stack of paper sheets insertable along a lower edge of said base portion;
• a punch operational crank pivotably connected to said base portion;
• means interconnecting said crank to said punch mechanism to punch spaced holes through a marginal edge of the stack of paper sheets;
• wherein said means comprises a four-bar linkage translating a pivoting movement of said crank to a vertical straight line movement of said series of punches;
• and
• in which said four-bar linkage comprises a coupler plate having three triangular spaced first, second and third coupler interconnect points, said crank being attached to said first coupler interconnect point;
• an elongated rocker arm having one end pivotably attached to said base portion and another end attached to said second coupler interconnect point;
• and wherein said series of vertical punches are driven by a drive link connected to a drive pin at the third coupler interconnect part.

A paper punch apparatus comprising:

• a base portion;
• a hole punch mechanism including a series of vertical punches in said base portion and accessible to a stack of paper sheets insertable along an edge of said base portion;
• a punch operational crank pivotably connected to said base portion;
• means interconnecting said crank to said punch mechanism to punch spaced holes through a marginal edge of said stack of paper sheets;
• wherein said hole punch mechanism comprises a first row of relatively large vertical punches and a second row of smaller vertical punches extending parallel to and spaced from said first row of punches;
• means for variously rendering one of said rows of punches inoperable while the other row is operative, so that variously sized spaced holes of a predetermined number may be punched alternatively in a paper sheets stack dependent on which row of punches has been rendered inoperative;
• wherein said means rendering one of said rows of punches inoperative includes a laterally translatable bar having two rows of apertures, and wherein apertures in said first row are displaced laterally from apertures in said second row and whereby inoperative punches in one of said rows are spring-passable through one of said rows of said apertures rendering such row of punches inoperable in one lateral position of said bar;
• wherein said hole punch mechanism includes a horizontal die plate and a vertical plate bisecting said die plate, said means for interconnecting said cranks and punch mechanism including a punch driving pin movable vertically in a slot in said vertical plate such that alternatively one of said rows of punches are driven through a paper sheets stack inserted on said die plate on one side of said vertical plate to punch the spaced holes through the marginal edge of the paper sheets stack;
• and
• further comprising a second punch mechanism on the other side of said vertical plate and including an elongated vertical punch blade having a spaced series of punch elements of rectangular cross-section on a bottom edge thereof;
• said punch blade being driven by said crank and said means for interconnecting simultaneously with operation of said operable row of punches, to punch a row of rectangular holes in a marginal edge of a second stack of paper sheets inserted into said second punch mechanism.

A punching apparatus comprising:

• a base portion;
• a first hole punch mechanism in said base portion and accessible to a first stack of paper sheets insertable along a first linear edge of said base portion for punching a first hole pattern in the first stack of paper sheets;
• a second hole punch mechanism in said base portion and accessible to a second stack of paper sheets insertable along a second linear edge of said base portion for punching a second hole pattern in the second stack of sheets;
• a punch operational crank pivotally connected to said base portion;
• means interconnecting said crank and each of said hole punch mechanisms for independently punching the first and second hole patterns in any stack of paper sheets inserted into said hole punch mechanisms at said first and second linear edges, respectively;
• and
• wherein said crank is a lever having a length sufficient to result in about a twenty to one mechanical advantage and wherein said means interconnecting said crank and said hole punch mechanisms has an additional about four-fold mechanical advantage at the top of a lever stroke such that a hand-force applied to said lever has an about eighty to ninety-fold increase in the punching forces initially applied to a paper sheets stack inserted into one of said linear edges.

A combined punching apparatus comprising:

• a base portion;
• a first hole punch mechanism in said base portion and accessible to a first stack of paper sheets insertable along a first linear edge of said base portion for punching a first hole pattern in the first stack of paper sheets;
• a second hole punch mechanism in said base portion and accessible to a second stack of paper sheets insertable along a second linear edge of said base portion for punching a second hole pattern in the second stack of sheets;
• a punch operational crank pivotally connected to said base portion;
• means interconnecting said crank and each of said hole punch mechanisms for independently punching the first and second hole patterns in any stack of paper sheets inserted into said hole punch mechanisms at said first and second linear edges, respectively;
• and
• in which said crank and said interconnecting means operate simultaneously to punch the first hole pattern and the second hole pattern in stacks of paper sheets inserted into said first and second hole punch mechanisms respectively.