EP0908327A2

EP0908327A2 - Hand-operator binder with punch mechanism

Info

Publication number: EP0908327A2
Application number: EP98118896A
Authority: EP
Inventors: Jong Myoung Kim
Original assignee: SPC Co Ltd
Current assignee: SPC Co Ltd
Priority date: 1997-10-07
Filing date: 1998-10-07
Publication date: 1999-04-14
Also published as: JPH11208143A; EP0908327A3; CN1079743C; BR9804170A; JP3072625B2; KR100242866B1; KR19990030968A; CN1213615A

Abstract

A hand- operated binder comprising : a base having a pair of snaps and a pair of support projections disposed on one end of an upper surface of THE base with a spaced and opposed relationship ; a jig table havng a generally planar upper surface and a pair of side surfaces extending downward from the planar upper surface, the jig table moving back and forth in a sliding contact with said base ; a punch mechanism having a ram and a pair of cylindrical guide bars each disposed near the respective support projections, the ram having a pair of spaced punch pins arranged in parallel at opposed positions ; a handle having a planar portion for exerting a force and a pair of plate members extending from the planar portion, each end of the plate members being pivotally connected to the respective support projections by a pin, each plate member being also pivotally connected to the ram by another pin ; a pair of hammers connected to the handle to travel downward and upward ; a clamp having a suppressing portion for suppressing the document ; and a position aligning means disposed in the jig table having a pair of sliding bars and end uprights, teeth formed in the sliding bars, and a pinion.

Description

FIELD OF THE INVENTION

This invention relates to a hand-operated binder with punch mechanism especially suitable for effecting not only stable punching but also simple and tight binding of documents, papers, and reports.
Many paper fasteners such as binding strings and male/female-paired fasteners have been widely used in filing papers. In these methods of filing, papers to be filed are aligned evenly, punched and tied using the fasteners. However, in filing methods using the above fasteners including binding strings, when preserving records in long time, the tied portions of records become tattered around the punched holes because of rubbing between the fasteners and the circumference of holes. Furthermore, when the thin fastensers are fitted into the large punched holes, the filed documents move, and such movement leads to detachment of papers and the papers being out of order.
For rivet/washer type fasteners, movement of the document is prevented to some degree, while such fasteners easily come loose by the weight of the document at the time of accessing the document when a large volume of document is filed, because the washer engaged with the screws of the rivet can not withstand the weight of document.
In the meantime, separate punches have been used in punching the documents to be filed apart from binding. Punches typically includes a base receiving the document to be puched and provided normally in the shape of plate, and a punching portion operated by a human power exerted thereon.
However, conventional punches do not effectively work for a large volume of documents because of their weak constructions so that several times of punching should be done. Punching over several times makes the holes formed in each punching process to be inconsistent. Moreover, when the bar-shaped blades or punch pins restore to a position before punching after completing the punching process, the papers often clings to the outer circumference of the blades, and this is troublesome to the workers in getting the clung papers off the blades and aligning the papers again when filing them.
Punches further includes a positioner to determine the position to be punched in such that the holes for filing are not biased on one side. The positioner is commonly of a shape of a thin and narrow bar with scales carved therein and arranged to travel across the base of the punch. The center of the document to be punched is defined by adjustment of the positioner. However, in the conventional positioners, since the positions to be punched are decided on the basis of the scales engraved in the positioner, the position of the documents must be varied with see of the doucuments, and so, punching is often executed by the eye. As a consequence, another discord in filing the documents occurs. Furthermore, because the conventional positioners serve only as positioning means for documents, the lower portion of the document is disarranged at the time of punching and result in inconsistent punch holes.
The conventional punches can receive a relatively small volume of papers at one time, and punching and binding of papers are separately performed employing different devices. Moreover, paper fastensers available are fixed in their sizes, for example, by 70 or 80 mm in length, and thus, punches should be used according to the see off asteners. Therefore, the filing between the documents each having different punch holes with the see offasteners is not desirable and hard to match with each other.

SUMMARY OF THE INVENTION

Accordingly, it is an object of the present invention to provide a binder with a punch mechanism in which punching and binding of papers are accomplished in a series of successive processes in one instrument, and adjustable punch stations are also provided.
Another object of the present invention is to provide a hollow tubular fastener for use in a binder with a punch mechanism according to the present invention in which a very large volume of records are filed firmly, the preservation and maintenance of records are effective, and in particular, the second filing of records based on the previously filed records is attained.
Still another object of the present invention is to provide a plate fastener for use in a binder with a punch mechanism according to the present invention to enhance the protection and appearance of records together with stable binding.
The present invention resides in providing a binder with a punch mechanism wherein a jig table moves freely along a longitudinal direction of a base and loading and unloading of the papers to be filed are made thereon. The papers are fixed on the jig table by a clamp and a position aligning means, and then punched by a force exerted on a handle. The fasteners are inserted into holes formed through the above punching process, and pressed around the holes by a pair of hammers provided with the handle.
The fastener employed in the binder with the punch mechanism of the present invention is a hollow tubular shape having a head and a body with incised end portion.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side view of a binder with a punch mechanism according to the present invention.
FIG. 2 is a top view of a binder with a punch mechanism according to the present invention.
FIG. 3 is a side sectional view of a binder with a punch mechanism according to the present invention.
FIG. 4 is a partially enlarged view of a position aligning means in FIG. 3.
FIG. 5 is a partially sectional enlarged view of a punch mechanism of the binder according to the present invention.
FIG. 6 is a top sectional view showing a punch mechanism of the binder according to the present invention.
FIG. 7 is a partially sectional enlarged view showing a punching function of the binder according to the present invention.
FIG. 8 is a partially sectional enlarged view showing a way of pressing a fastener in a binder of the present invention.
FIG. 9 is a perspective view of a fastener adapted for use in the binder of the present invention.
FIG. 10a to 10d show processes of punching and binding papers in which FIG. 10a shows the papers to be punched that are placed on a jig table of the binder, FIG. 10b shows a process of punching the papers, FIG. 10c shows the fastener inserted into a punched hole, and FIG. 10d shows a process of pressing the fastener and binding the papers.
FIG. 11 shows a filed papers in a perspective view using the binder of the present invention.
FIG. 12a and 12b shows another way of binding the papers using a plate fastener according to the present invention.
FIG. 13 is a perspective view of a plate fastener used in the binder of the present invention.
FIG. 14 shows a filed papers in a perspectibe view with the fasteners applied.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring to FIGS. 1 and 2, a binder with a punch mechanism is shown in which punching and binding are accomplished by one instrument as a series of successive processes. The binder includes a base 100 on which various elements consisting of the binder with a punch mechanism are installed. The base 10 has a retangular shape and a punch mechanism 200 disposed on one end portion of the base 100. The base 100 has also rubber lug 101 each disposed on the corners of the bottom surface of the base 100 to prevent the binder from being slip when using and to maintain levelling of the binder.
The punch mechanism 200 is provided with a handle 300 including a pair of parallel, spaced bars, and the handle 300 is pivotally mounted on the punch mechanism 200 using an axial pin 601.
A jig table 400 having an essentially C-shaped cross section is mounted on the base 100 and moves freely along a longitudinal direction of the base 100 so as to provide an area for accommodating papers to be filed. The jig table 400 has a clamp 410 for holding the paper to be filed not littered, and a position aligning means 420 to allow the papers to be disposed at the center there of without biasing on one side.
The handle 300 is provided with a pair of hammers 500 which keep a predetermined distance from a rotational axis of the handle 300 and carry out pressing of fastener. When the handle 300 arrives at the maximum downward position thereof, the hammers 500 contact snaps as described in further detail later.
Referring now to FIGS. 3 to 7 together with FIGS. 1 and 2, the jig table 400 is slidably mounted on the base 100 in such a manner that a stopper 401 having threaded openings (not shown) therein, the stopper 401 extending from the back surface of the jig table 400 through a slot 110 to a plane parallel to the back surface of the bottom of the base 100 and placed about the center position of the jig table 400, is threadedly engaged by screws 401A with the support plate, which is across the slot 110 and contacts with the back surface of the bottom of the base 100 at both ends thereof. The slot is formed by a space between a stepped portion 100A of the base 100 and the upper planar portion of the jig table 400, and has a given width and length (FIG. 3). Accordingly, the jig table 400 travels within the slot 110 in sliding contact between the support plate 402 and the back surface of the bottom of the base 100. Namely; when the stopper 401 travels to the leftmost end of the slot 110, the papers are placed ata position in which punching operation is performed, while when the stopper 402 travels to the rightmost end of the slot 110 the papers are positioned placed at a position in which not only pressing of a fastener to bind the papers, but also loading and unloading of the papers are made.
The punch mechanism 200 has a cover 201 of plastic material to prevent impurities and dust from entering elements of the punch mechanism 200. The punch mechanism 200 also has a pair of cylindrical guide bars 210 and a generally retangular ram 220 in cross section moving upward and downward along the outer circumferential surfaces of the guide bars 210. The guide bars 210 each has a height by a frefixed amount from the upper surface of the base 100 and guide the ram 220 in a upward and downward direction. The ram 220 has a pair of hollow cylindrical punch pins 221 fixed on the bottom of the ram 220 at a position opposed to the guide bars 210. Paper punch cuts or chips occurring when punching papers exits over respective upper openings of the punch pins 221 after traveling through respective inner circular surfaces of the punch pins 221.
The ram 220 has therein a chamber 230 for temporarily collecting the paper punch cuts moved through the punch pins 221. The chamber 230 has an exhausting opening 231 formed in a bottom surface thereof so that the paper punch cuts are exhausted into a collecting box 240 through the exhausting opening 231. The collecting box 240 is arranged in the cover 201 to receive the paper punch cuts exiting through the exhausting opening 231, and inserted in and removed from the cover 201 like a drawer.
As best illustrated in FIG. 7, a tensional means 222 is provided around each cylindrical punch pin 221 and includes a stopper 222A of T-shaped cross section slidably fitted around the punch pin 221 and a coil spring having one end joined to the bottom surface of the ram 220 and the other end connected to the stopper 222A. Accordingly the tentional means 222 moves with the punch pins 221. When the tensional means 222 is not compressed, the end portion thereof is positioned below the end of each punch pin 221 by a certain length so that the tensional means 222 is compressed during punching process while suppresses and prevents the papers from ascending along the upward movement of the punch pins 221 after completing punching process. Namely, the tentional means 222 expands by it restoration force and suppresses the papers and prevents the papers from asending with the upward movement of the punch pins 221 at the time the punch pins 221 restores at its initial position. Moreover, suppression acting on the papers by the tensional means 222 permits the papers not to be littered and makes a subsequent binding process easy.
The jig table 400 is also provided with a clamp 410 which has a pair of elongated arms 410A and 410B each one end connected to a respective brackets 430 provided with the jig table 400 by a pivot pin 431, and a suppressing portion 411 suppressing the papers which is connected to the other end of each elongated arms 410A and 410B. The suppressing portion 411 of the clamp 410 suppresses the paper to be filed by a restoration force of a torsion spring (not shown) provided with the pin 431between the brackets 430 and the opposed ends of the elongated arms 410A and 410B. The suppressing portion 411 is inactively curved so that a free end thereof is spaced from the top surface of the jig table 400 by a certain amount to easily receive the papers to be filed.
Around the center portion of the jig table 400, a position aligning means 420 including a pair of sliding bars 421, 422 is provided in a direction crossing the jig table 400. As shown in FIGS. 2 to 4, each of the two sliding bars 421 and 422 of the position aligning means 420 has a relatively narrow width and a portion embedded between the upper planar portion of the jig table 400 and the stepped portion of the base 100, and is spaced in parallel with each other. The two sliding bars 421 and 422 slidably move across the jig table 400 in oppsed directions with each other. Each of the two sliding bars 421 and 422 has also an end upright 421B, 422B. Teeth 421A and 422A are provided along opposed surfaces of the respective sliding bars 421 and 422, and a pinion 423 is intervened between the teeth 421A and 422A of the sliding bars 421 and 422 so that movement of any one of the sliding bars 421 and 422 result in movement of the other in an opposed direction with each other with the same distance of movement because the respective sliding bars 421 and 422 travel in engagement between the teeth 421A and 422A and the pinion 423.
With the above-mentioned construction of the position aligning means 420, various sees of papers are accommodated between the sliding bars 421 and 422 and both ends of papers contact the respective uprights 421B, 422B of the sliding bars 421 and 422 by adjusting the sliding bars 421 and 422. Moreover, alignment at the center of the papers to be filed without being biased on one side is accomplished, because the two sliding bars 421 and 422 of the position aligning means 420 travel in an opposed direction with each other with the smae distance due to engagement between the teeth 421A and 422A and the pinion 423.
Turning to FIGS. 5 to 7 which are partially enlarged views of the punch mechanism. The punch mechanism 200 has a construction to change the distance between the two punch pins 221 so as to be adapted for the size of facteners, for example, 70 and 80mm. Namely, a pair of polygonal sockets 221A are fitted into the ram 220 from the bottom side thereof through cylindrical openings 221B formed in the ram 220. Each punch pin 221 is fitted in an opening formed in the respective sockets 221A and engaged with a wrench bolt 30. The position, within the opening 221B formed in the ram 220, of each punch pin 221 fitted in the corresponding socket 221A is changed by fitting the socket 221A in the opening 221B with variation in length of the fasteners to be used so that the distance between the punch pins 221 is adjusted with the fastener length. Hexagonal shpae of the sockets 221A is preferred for stable positioning of the sockets within the respective openings 221B. Further, replacement of the punch pins 221 is easy when they are worn or damaged by removably providing the punch pins 221 through the sockets 221A and the wrench bolts 30.
The handle 300 has a pair of plate members 320 and 330 and a planar plate 340 for exerting a force on the handle 300 (shown well in FIG. 2). A pair of support projections 120 extend upward from the base 100 and further logitudinally extend in a right direction of the base 100. The support projections 120 are opposedly disposed in the base 100 and channels are formed in the respective support projections 120. Each of a pair of upholding arms 600 is placed in the respective channels formed in the support projections 120. The upper end of each upholding arm 600 is pivotally connected to one end of each plate member 320, 330 of the handle by a first axial pin 601, and the lower end of each upholding arm 600 is also pivotally connected to the support projection 120 in the channel thereof by a second axial pin 603. Each plate member 40, 41 is connected, as well, to the ram 200 by a third axial pin 602 spaced apart from the first axial pin 601. With the above construction, the handle 300 is pivotted using the first and third axial pins 601 and 602 as fulcrums, and the ram 200 is also moved upward and downward with travel of the handle 300.
Turning now to FIGS. 1-7 again, the handle 300 is provided with a pair of hammers 500 which are spaced and opposed with each other, and slidably disposed in a cross bar 310 connected by screws between the plate members 320 and 330 of the handle 300. Each hammer 500 has a push knob 510 for exerting a force thereon, a head 520, and a body 540 extending between the push knob 510 and the head 520. The diameter of the body 540 is thinner than that of the head 520 so that when the knob 510 is connected to the body 540, the hammer 500 is not slipped out from the cross bar 310. The hammer 500 also has a spring means 530 to allow the hammer 500 to be restrored at its initial position before exertion of a force when the force is released therefrom. The hammers 500 may be connected with each other by such as a plate so as to operate simultaneously.
In symmetry with the hammers 500, a pair of snaps 700 are disposed at opposed positions on the base 100 at the time the handle 300 is at its lowermost position.
As shwon well in FIG. 8, the T-shaped snaps 700 each has a circular plate 720 and a projection 710 extending from the circular plate 720 and having downward inclined, tapered circumference. A depression is formed around the projection 710 for guiding an end portion of a fastener 800 to be spread outwardly when a force acts on the fastener 800 through the hammers 500. For installing the snaps 700, there are provided a pair of subsidence portions 130 in the base 100 at positions opposed to the respective hammers 500. At least two paired insert holes 131, 132 are formed in the subsidence portions 130 to retain the respective snaps 700 therein and meet the various conventional fastener lengths, for example, 70 and 80 mm. Each of the two paired insert holes 131 and 132 are within the diameter of each head 520 of hammers 500 to permit pressing of the fasteners 800 to be made irrespective of movement of the snaps 700 in each paired insert holes 131 and 132. In this construction, the snaps 700 are removably fitted in the respective paired insert holes 131 and 132.
Referring to FIG. 9, there is shown a fastener adapted for use in the binder of the present invention. The cylindrical hollow fastener 800 has a rounded head 810, an extended portion 820 elongated from the head 810, and an end portion 830. The extended portion 820 of the fastener 800 varies with and is longer than the thickness of papers to be filed. The end portion 830 of the fastener 800 has a plurality of incised slits 831 each cut from the edge thereof by a given length. The fastener 800 is made from soft iron such as aluminium and blister copper.
Referring now to FIGS. 8 and 9, when binding the punched papers, the cylindrical hollow fasteners are placed in the respective punch holes 910 formed in the papers during punching processes. Then, the head 520 of the hammer 500 presses the fastener 800 on the rounded header 810 thereof by a force exerted on the hammer 500, and at this time, the projection 710 and depression of the snap 700 guide the end portion 830 of the fastener 800 so as to spread outwardly the incised portions of the end portion 830. More application of force to the fastener 800 makes the incised portions of the end portion 830 closely adhered around the punch holes of the papers.
As shown well in FIG. 5, the cover 201 is provided with a retainer 201A which holds tools such as a wrench 10 to connect or remove the punch pin 221 accommodated in the socket 221A of the ram 220.
The operation of the binder with the punch mechanism will now be explained with reference to FIGS. 10a - 10d.
Turning now to FIG. 10a, the jig table 400 is drawn from the base 100 at whcih the stopper 401 is a rightmost position in the slot 110. The papers to be filed are loaded on the jig table 400 lifting the clamp 410 up. At this time, the papers are lined up by the position aligning means 420 to be located at the center thereof. When the jig table is the rightmost position, loading and unloading of the papers are made including pressing the fasteners for binding.
Referring to FIG. 10b, punching processes are shown. The jig table 400 is pushed in the left direction and the stopper 401 is a leftmost position in the slot 110, at which the left upper portion of the papers is placed under the punch pins 221. Pressing the handle 300, the punch pins 221 in the ram 220 of the punch mechanism punch the papers. At this time, the paper punch cuts travel along the inner circumferential surface of each punch pin 221, are temporarily accommodated in the chamber 230 of the ram 230 and then collected in the collecting box 240 through the exhausting opening 231 formed in the bottom of the chamber 230.
Turning to FIG. 10c, the jig table 400 is drawn from the base 100 like in FIG. 10a at which the punch holes 910 of the papers 900 are placed over the respective snaps 700. Insertion of the fasteners 800 into the punch holes 910 of the papers 900 is made.
FIG. 10d shows the pressing process of the fasteners. First, the handle 300 is moved to be placed at its lowermost position at which the punching process is made. In this state, a force is exerted on the hammer 500 such that the head 520 of the hammer 500 presses the fastener 800. At this time, the end portion 830 of the fastener 800 is spread out as descending along the downward inclined projection 710 due to the incised slits formed in the end portion 830, and adhered around the punch holes 910 of the papers 900.
Referring to FIG. 11, the papers to have been filed is shown in which the cylindrical hollow fasteners 800 are adhered around the punch holes 910 of the papers 900.
FIGS. 12 to 14 show plate fasteners applied to the binding of the papers to ensure more enduring binding. FIG. 13 shows the plate fastener 20 which includes a body 21 having a prefixed length and width, and a pair of holes 21 formed at both sides thereof. A guiding portion 21A is formed around the respective holes 21 and a depression 21B is provided in each guiding portion 21A for stable joining between the fastener 800 and the plate fastener 20.
Referring to FIGS. 12a and 12b, the plate fastener 20 is placed in the subsidence hole 130 in the base 100 before loading the papers on the jig table 400. The holes 21 of the plate fastener 20 are positioned on the respective snaps 700. Thereafter, the papers 900 with punch holes 910 are loaded on the jig table 400, another plate fastener 20 is placed on the papers 900, and the cylindrical fastener 800 is inserted through the holes 910. The cylindrical fastener 800 is pressed by a force exerted on the hammers 500, as shown in FIGS. 10a to 10d.
When the binding has been completed, the head 810 of each cylindrical fastener 800 contacts closely with the guiding portion 21A and depression 21B of the respective holes 21 of the plate fasteners 20 placed on the top surface of the paper 900. While pressing the cylindrical fasteners 800 by the hammers 500, the end portion 830 of each fastener 800 is guided along the downwardly tapered projection 710 of the snap 700 and spread outward around the holes 21 of the plate fastener 20.
From the foregoing description, it will be understood that the binder with the punch mechanism of the present invention can exhbit many advantageous effects as set forth below.
The binder has the punch mechanism so that binding and punching of papers are accomplished by one instrument. Further, a relatively broad range of documents with different thicknesses can be applied to the binder by providing fasteners with many sizes.
Stable punching and binding are made by the jig table and the position aligning means.
Second filing is possible using the cylindrical hollw fasteners by binding the documents with other suitable fasteners such as a binding string.
Although the present invention has been described in relation to a particular embodiment thereof, many other variations and modifications will become apparent to those skilled in the art. It is preferred, therefore, that the present invention be limited not by the specific disclosure herein, but only by the appended claims.

Claims

A hand- operated binder comprising :

a base having a pair of snaps and a pair of support projections disposed on one end of an upper surface of said base with a spaced and opposed relationship ;

a jig table havng a generally planar upper surface and a pair of side surfaces extending downward from said planar upper surface, said jig table moving back and forth in a sliding contact with said base ;

a punch mechanism having a ram and a pair of cylindrical guide bars each disposed near the respective support projections, said ram having a pair of spaced punch pins arranged in parallel at opposed positions ;

a handle having a planar portion for exerting a force and a pair of plate members extending from said planar portion, each end of said plate members being pivotally connected to said respective support projections by a pin, each plate member being also pivotally connected to said ram by another pin ;

a pair of hammers connected to said handle to travel downward and upward ;
wherein said jig table is drawn out for loading a document thereon while pushed toward said punch mechanism to permit said document to be placed under said punch pins, and further drawn out to permit punch holes of said document to be placed on said respctive snaps ;
wherein said guide bars guide said ram with upward and downward movement of said handle ; and
wherein each of said hammers is placed over the respective snaps at a lowermost position of said handle to allow each of said hammers to exert a force on the respective snaps when said hammrs are pressed.
The binder of claim 1, wherein said ram further comprises a pair of tensional means each disposed at the respective punch pins so that each of said tensional means suppresses said document for preventing said document from being ascending along each of said punch pins after completing punching.
The binder of claim 1, wherein each of said guide bars further comprises a spring means so that said guide bars restore to their initial positions when said force exerted on said handle is removed.
The binder of claim 1, wherein each of said hammers further comprises a knob disposed on a top thereof and a spring means so that said hammers restore to their initial positions when the force exerted on each of said hammers is removed.
The binder of claim 1, further comprising a clamp having a pair of elongated arms and a suppressing portion, wherein said jig table further has a pair of brackets each formed at a side end of said jig table remote from a rear end of said jig table, and each of said elongated arms is pivotally connected to the respective brackets so that said clamp suppresses said document not to be littered when punching and binding.
The binder of claim 5, wherein said suppressing portion of said clamp is gradually curved.
The binder of claim 1, further comprising a position aligning means disposed in said jig table to travel across said jig tabel, said position alignin gmeans having a pair of sliding bars and end uprights, teeth formed in opposed surfaces of said sliding bars, and a pinion, wherein a portion of each sliding bar is embedded between said base and said jig table, and said pinion is disposed between said teeth of each of said sliding bars within the embedded portion so that said sliding bars move across said jig table in opposed direction with each other maintaining the same distance of movement because of movement of the respective sliding bars in engagment between said teeth and the pinion.
The binder of claim 1, wherein said base further comprises an elongated subsidence portion, and said snaps are disposed in said subsidence portion with a spaced and opposed relationship.
The binder of claim 8, wherein said subsidence portion of said base has at least two paired insert holes formed therein so that each of said snaps is movably inserted one of said two paired holes.
A hand-operated punch comprising :

a base having a pair of support projections extending from one end of an upper surface of said base with a spaced and opposed relationship ;

a jig table having a planar upper surface and a pair of side surfaces extending downward from said planar upper surface, said jig table moving back and forth in a sliding contact with said base ;

a clamp having a pair of elongated arms and a suppressing portion, each of said elongated arms being pivotally connected to each of a pair of brackets formed in said jig table ;

position alinging means arranged in said jig table to travel across said jig table in a direction perpendicular to a longitudinal length of said jig table ;

a ram having a pair of spaced punch pins arranged in parallel at opposed positions ;

a pair of cylindrical guide bars each disposed near the respective support projections ;

a handle having a planar portion and a pair of plate members extending from said planar portion, each end of said plate members being pivotally connected to said respective support projections by a pin, each plate member ebing also pivotally connected to said ram by another pin ;
wherein said jig table is drawn out for loading a doucment thereon while pushed toward said ram to permit said documment to be placed under said punch pins ; and
wherein said guide bars guide said ram with upward and downward movement of said handle.
The punch of claim 10, wherein each of said guide bars further comprises a spring means so that said guide bars restore to their initial position when a force exerted on said handle is removed.
The punch of claim 10, wherein said ram further comprises a pair of thensional means each disposed to the respective punch pins so that each of said tensional means suppresses said document for preventing said document from being ascending along each of said punch pins after completing punching.
The punch of claim 10, wherein said ram further comprises a chamber formed therein to receive paper punch cuts traveled through an inner surface of each punch pin.
The punch of claim 10, wherein said ram further comprises a pair of sockets and openings for receiving said sockets, and said sockets each ahs an opening for retaining said punch pin in which the respective punch pins are held in the respective sockets, and said sockets are removably connected to said ram so that a position of each punch pin can be changed by fitting said sockets in the respective openings for said punch pins with variations of a distance between said punch pins.
The punch of claim 14, wherein said sockets are hexagonal shape to prevent said sockets from being moved with the respective openings for said punch pins.