Perforator for perforating a stack of paper sheets

Claim 2

A perforator for perforating a stack of paper sheets which comprises an inclined perforated plate having a plurality of spaced holes therein and a recess in the inner surface extenDing down from an upper edge and terminating short of a lower edge of the plate to provide a stop for the stack of paper sheets to be perforated, an inclined perforated punching rod guide member positioned opposite to and parallel said inner surface of the perforated plate to define an inclined paper sheet stack receiving opening in cooperation with said recess, said punching rod guide member having a plurality of holes in alignment with the holes in the perforated plate, a plurality of reciprocally movable punching rods disposed in said holes in the punching rod guide member for advancing into and retracting from the holes in the perforated plate, a punching rod actuation member connected to said punching rods for advancing and retracting the rods, an interlocking mechanism, a handle operatively connected to said punching rod actuation member through said interlocking mechanism for actuating the rod actuation member, and a frontal support means which comprises a pair of parallel and spaced upright side plates and a horizontal pivotal support bar positioned adjacent to one of said side plates for pivotal movement between an operating position in which the support bar extends out of the region defined by the side plates and a stowed position in which the support bar is within said region.

Claim 3

The perforator as set forth in claim 1 wherein the axes of the holes in said perforated plate and the axes of said punching rods are disposed on an acute angle relative to horizontal when said perforator is disposed on a plane horizontal surface.

Claim 4

The perforator as set forth in claim 1 in which said pivotal support bar is pivotal from a position substantially parallel to said spaced upright side plates to a position substantially perpendicular to said spaced upright plates.

Claim 5

The perforator as set forth in claim 1 wherein said receiving opening is in the form of a slot having spaced parallel surfaces disposed at an acute angle relative to horizontal when said perforator is disposed on a plane horizontal surface.

Claim 6

The perforator as set forth in claim 1 wherein said punching rods are movable upwardly at an acute angle by said punching rod actuating member to effect perforation of said stack of paper sheets.

Claim 7

The perforator as set forth in claim 1, further including paper stack aligning means which comprises a stop provided at the bottom of said paper stack receiving opening and an adjustable aligning ruler for aligning the side edges of said paper stack and positioned adjacent to the upper edge of said paper stack receiving opening.

Claim 8

The perforator as set forth in claim 1, further including a paper stack guide means which comprises a pair of paper stack guide pieces extending upwardly from the upper edge of said paper stack receiving opening at substantially the same angle as the opening, and means providing for adjusting said pair of paper stack guide pieces relative to each other.

Claim 9

A frontal supported perforator for perforating a stack of paper sheets comprising a pair of parallel and spaced side upright plates, a front reinforcing bar extending between said side plates adjacent to the front edges thereof, a rear reinforcing bar extending between said plates adjacent to the rear edges thereof, a support leg pivoted to said rear reinforcing bar for pivotal movement between operative and non-operative positions, an inclined perforated plate extending between and supported by said side plates and having a plurality of spaced holes therein, said perforated plate having a recess in the inner surface extending downwardly from the upper edge and terminating short of the lower edge of the plate to provide a stop for said paper stack, an inclined punching rod guide member connected to said inner surface of the perforated plate in a position opposite to said recess to define an inclined paper stack receiving opening in cooperation with the recess and having a plurality of spaced holes in alignment with the holes in the perforated plate, said stop defining the bottom Of said opening, a plurality of punching rods reciprocably received in the holes in said guide member for advancing into and retracting relative to the holes in the perforated plate, a punching rod actuation member connected to said punching rods for advancing and retracting the rods, a pair of adjustable paper stack guide pieces extending upwardly from the upper edge of said paper stack receiving opening at substantially the same angle as the opening, an adjustable ruler positioned above said paper stack receiving opening and behind one of said adjustable paper stack guide pieces with a portion thereof extending at right angles to the opening and adapted to be abutted by said paper stack for aligning the stack, an interlocking mechanism, and an operation handle operatively connected to said punching rod actuation member through said interlocking mechanism for actuating the actuation member.

Claim 10

A frontal supported perforator for perforating a stack of paper sheets comprising a pair of parallel and spaced side upright plates, a front reinforcing bar extending between said side plates adjacent to the front edges thereof, a rear reinforcing bar extending between said plates adjacent to the rear edges thereof, a support leg pivoted to said rear reinforcing bar for pivotal movement between operative and non-operative positions, an inclined perforated plate extending between and supported by said side plates and having a plurality of spaced holes therein, said perforated plate having a recess in the inner surface extending downwardly from the upper edge and terminating short of the lower edge of the plate to provide a stop for said paper stack, an inclined punching rod guide member connected to said inner surface of the perforated plate in a position opposite to said recess to define an inclined paper stack receiving opening in cooperation with the recess and having a plurality of spaced holes in alignment with the holes in the perforated plate, said stop defining the bottom Of said opening, a plurality of punching rods reciprocably received in the holes in said guide member for advancing into and retracting relative to the holes in the perforated plate, a punching rod actuation member connected to said punching rods for advancing and retracting the rods, a pair of adjustable paper stack guide pieces extending upwardly from the upper edge of said paper stack receiving opening at substantially the same angle as the opening, an adjustable ruler positioned above said paper stack receiving opening and behind one of said adjustable paper stack guide pieces with a portion thereof extending at right angles to the opening and adapted to be abutted by said paper stack for aligning the stack, an interlocking mechanism, and an operation handle operatively connected to said punching rod actuation member through said interlocking mechanism for actuating the actuation member.

Claim 11

A perforator for perforating a stack of paper sheets which comprises an inclined perforated plate having a plurality of spaced holes therein and a recess in the inner surface extending down from an upper edge and terminating short of a lower edge of the plate to provide a stop for the stack of paer sheets to be perforated, an inclined perforated punching rod guide member positioned opposite to and parallel said inner surface of the perforated plate to define an inclined paper sheet stack receiving opening in cooperation with said recess, said punching rod guide member having a plurality of holes in alignment with the holes in the perforated plate, a plurality of reciprocally movable punching rods disposed in said holes in the punching rod guide member for advancing into and retracting from the holes in the perforated plate, a punching rod actuation member connected to said punching rods for advancing and retracting the rods, an interlocking mechanism, a handle operatively connected to said punching rod actuation member through said interlocking mechanism for actuating the rod actuation member, a paper stack guide means comprising a pair of paper stack guide pieces extending upwardly from the upper edge of said paper stack receiving opening at substantially the same angle as the opening, means providing for adjusting said pair of paper stack guide pieces relative to each other, an adjustable ruler for determining the lateral position of said stack of paper, and adjustable means for adjusting the lateral position of said adjustable ruler, said adjustable means including a guideway in said punching guide member, said means for adjusting said pair of paper stack guide pieces including slidable elements slidable in said guideway.

Claim 12

A perforator for perforating a stack of paper sheets which comprises an inclined perforated plate having a plurality of spaced holes therein and a recess in the inner surface extending down from an upper edge and terminating short of a lower edge of the plate to provide a stop for the stack of paer sheets to be perforated, an inclined perforated punching rod guide member positioned opposite to and parallel said inner surface of the perforated plate to define an inclined paper sheet stack receiving opening in cooperation with said recess, said punching rod guide member having a plurality of holes in alignment with the holes in the perforated plate, a plurality of reciprocally movable punching rods disposed in said holes in the punching rod guide member for advancing into and retracting from the holes in the perforated plate, a punching rod actuation member connected to said punching rods for advancing and retracting the rods, an interlocking mechanism, a handle operatively connected to said punching rod actuation member through said interlocking mechanism for actuating the rod actuation member, a paper stack guide means comprising a pair of paper stack guide pieces extending upwardly from the upper edge of said paper stack receiving opening at substantially the same angle as the opening, means providing for adjusting said pair of paper stack guide pieces relative to each other, an adjustable ruler for determining the lateral position of said stack of paper, and adjustable means for adjusting the lateral position of said adjustable ruler, said adjustable means including a guideway in said punching guide member, said means for adjusting said pair of paper stack guide pieces including slidable elements slidable in said guideway.