U.S. patent number 3,921,487 [Application Number 05/475,332] was granted by the patent office on 1975-11-25 for perforator for perforating a stack of paper sheets.
This patent grant is currently assigned to New Kon Industrial Co., Ltd.. Invention is credited to Koji Kondo, Katsumi Otsuka, Miyagi Tamura, Hideo Tsukamoto, Kosaku Yoshizawa.
United States Patent |
3,921,487 |
Otsuka , et al. |
November 25, 1975 |
Perforator for perforating a stack of paper sheets
Abstract
A perforator for perforating a stack of paper sheets comprises
an inclined perforated plate having a plurality of holes therein
and a recess formed in the inner surface of the perforated plate
extending down from the upper edge and terminating short of the
lower edge of the plate to provide a stop for the stick of paper
sheets. An inclined perforated punching rod guide member is
positioned opposite and parallel to the inner surface of the
perforated plate to define an inclined paper stack receiving
opening in cooperation with the recess. The punching rod guide
member has a plurality of holes in alignment with the holes in the
perforated plate, and a plurality of punching rods are reciprocably
received in the holes in the rod guide member for advancing into
and retracting relative to the holes in the perforated plate. A
punching rod actuation member is connected to the rear ends of the
rods for advancing and retracting the punching rods simultaneously
into and from the holes in the plate, and a handle is operatively
connected to the punching rod actuation member through an
interlocking mechanism for actuating the rod actuation member.
Inventors: |
Otsuka; Katsumi (Funabashi,
JA), Yoshizawa; Kosaku (Chiba, JA), Tamura;
Miyagi (Togane, JA), Kondo; Koji (Chiba,
JA), Tsukamoto; Hideo (Tokyo, JA) |
Assignee: |
New Kon Industrial Co., Ltd.
(Tokyo, JA)
|
Family
ID: |
13603314 |
Appl.
No.: |
05/475,332 |
Filed: |
May 31, 1974 |
Foreign Application Priority Data
|
|
|
|
|
Jun 27, 1973 [JA] |
|
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48-76365 |
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Current U.S.
Class: |
83/468.9; 83/620;
83/632; D19/72; 83/626; 83/633 |
Current CPC
Class: |
B26F
1/02 (20130101); B26F 1/36 (20130101); B26F
1/32 (20130101); Y10T 83/884 (20150401); Y10T
83/8831 (20150401); Y10T 83/885 (20150401); Y10T
83/8848 (20150401); Y10T 83/766 (20150401) |
Current International
Class: |
B26F
1/02 (20060101); B26F 1/36 (20060101); B26F
1/32 (20060101); B26D 005/14 (); B26D 007/16 ();
B26F 001/14 () |
Field of
Search: |
;83/25,140,468,467,522,559,618,633,634,620,625,626,632 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Meister; J. M.
Assistant Examiner: Silverberg; Fred A.
Attorney, Agent or Firm: Jordan; Frank J.
Claims
What is claimed is:
1. 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.
2. 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.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. 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.
9. 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.
Description
BACKGROUND OF THE INVENTION
This invention relates to a perforator for perforating a stack of
paper sheets and more particularly, to a perforator which does not
require any time consuming paper aligning operation as a
preparation step in the perforating operation and which is compact
in construction.
There have been proposed and employed a great variety of
perforators for perforating a stack of paper sheets such as loose
leaves. However, the prior art perforators are designed to
horizontally receive a stack of loose leaf paper sheets to be
perforated in which the paper sheets are inserted into the
perforation zone below the punching rods until the leading edges of
the paper sheets abut against a stop in the perforation zone and
the other edges of the paper sheets are then manually aligned,
thereby involving a time consuming procedure. After the paper
sheets have been properly aligned, the spring-loaded handle is
pushed down to move the punching rods downwardly to cause the
punching rods to punch or perforate the aligned paper sheets
adjacent to the leading edges of the sheets to thereby make aligned
holes in the paper sheets.
SUMMARY OF THE INVENTION
This invention improves on the above-type prior art perforators by
providing a paper sheet stack receiving opening which is disposed
at an acute angle with respect to the vertical so as to receive the
paper sheet stack in an inclined angle with respect to the vertical
to thereby eliminate the time consuming paper sheet aligning
procedure as necessary in the prior art perforators which require
manual alignment of the edges of the paper stack after the stack
has been received in the perforators. According to the present
invention, the lower edges of the paper sheets in a stack are
automatically aligned when the edges lie on a stop at the bottom of
the inclined paper stack receiving opening as the stack is inserted
into the opening to thereby simultaneously align the upper edges of
the paper sheets. The remaining edges of the paper sheets in the
stack in the opening are aligned by a simple aligning operation in
which one side edge of the stack is merely caused to abut against
an adjustable aligning ruler positioned adjacent to the paper stack
receiving opening. Furthermore, according to the present invention,
the entire perforation mechanism is supported at support points
which comprise two parallel and spaced side plates having support
feet and a pivotal support bar having a support foot. The pivotal
support bar is movable between an operating position in which the
support bar extends forwardly out of the region defined by the side
plates and a stowed or inoperative position in which the support
bar is stowed within the above-mentioned region whereby the
perforator of the invention, when not in use, occupies a smaller
space or area than the corresponding size prior art
perforators.
According to the present invention, there is provided a perforator
for perforating loose leaf paper sheets which essentially comprises
an inclined perforated plate having a plurality of spaced holes
therein and 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 the paper sheet stack. An inclined perforated
punching rod guide member is positioned opposite and parallel to
the inner surface of the perforated plate to define an inclined
paper sheet stack receiving opening in cooperation with the recess
and having a plurality of holes in alignment with the holes in the
perforated plate. A plurality of movable punching rods are
reciprocably received in the holes in the punching rod guide member
for advancing into and retracting relative to the holes in the
perforated plate. A punching rod actuation member connected is to
the rear end portions of the punching rods, for advancing and
retracting the rods and a handle is operatively connected to the
punching rod actuation member through an interlocking mechanism for
actuating the rod actuation member.
The above and other objects and attendant advantages of the present
invention will be more readily apparent to those skilled in the art
from a reading of the following detailed description in conjunction
with the accompanying drawings which show one preferred embodiment
of the invention for illustration purpose only, but not for
limiting the scope of the same in any way.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of one preferred embodiment of a
perforator constructed in accordance with the present invention
with the transparent front cover or scrap piece receiver removed
therefrom;
FIG. 2 is a side elevational view on an enlarged scale of the
perforator;
FIG. 3 is a top view of the perforator looking in the direction of
arrow A in FIG. 1; and
FIG. 4 is a fragmentary cross-sectional view of a portion of the
perforator .
PREFERRED EMBODIMENT OF THE INVENTION
The present invention will be now described referring to the
accompanying drawings which show one preferred embodiment of
perforator of the invention for illustration purpose only. The
perforator of the invention generally comprises a pair of parallel
and spaced side plates 1 and 1 each having an L-shaped cross
section. A front reinforcing bar 2 extends between the side plates
adjacent to the front edges of the side plates in a slightly spaced
position above the horizontal portions or feet 1' and 1' of the
side plates 1 and 1 with the opposite ends of the bar 2 secured to
the side plates by means of set screws and a rear reinforcing bar 3
of L-shaped cross section extending between the side plates 1 and 1
adjacent to the rear edges of the plates. The vertical leg of the
L-shaped cross section rear reinforcing bar 3 is secured at its
opposite ends to the side plates 1 and 1 by means of set screws.
The bottom of the horizontal portion or foot of the rear
reinforcing bar 3 is flush with the lower edges of the side plates.
Rubber support feet 4 are secured to and project downwardly from
the horizontal feet of the side plates 1 and 1 at locations
adjacent to the front and rear edges of the side plates,
respectively.
A pivotal support bar 5 extends horizontally below the front
reinforcing bar 2 in the vicinity of one of the side plates 1 (the
right-hand side plate as seen in FIG. 1) and is pivoted at the rear
end to the foot of the L-shaped cross section rear reinforcing bar
3 by means of a pin 6. The pivotal support bar 5 has a lateral
projection 5' and a rubber foot 4' is secured to and projects
downwardly from the lateral projection 5'. Thus, when the
perforator is in its non-operative position, the pivotal support
bar 5 is in its stowed position in which the support bar lies
parallel to the front and rear reinforcing bars 2 and, 3 and when
the perforator is operated for its intended function, the support
bar 5 is pivoted from the stowed position to the operation position
shown in FIG. 1 in which the support bar extends forwardly beyond
the front edge of the right-hand side plate 1 at right angles to
the front and rear reinforcing bars 2 and 3 to thereby provide a
multiple-point support to the perforator.
A perforated plate 8 extends between the side plates 1 and 1 above
and between the front and rear reinforcing bars 2 and 3 at an acute
angle with respect to the vertical and has a plurality of spaced
holes 9. A holding-down bar 10 extends between the side plates 1
and 1 and is secured to the front surface of the perforated plate 8
along the upper edge of the perforated plate for the purpose to be
described hereinafter. The holding-down bar 10 extends upwardly
beyond the upper edge of the perforated plate 8. A transparent
cover or scrap receiver 11 is removably fitted on the holding-down
bar 10 for receiving scrap pieces which will be generated during
the perforating operation of the perforator. A perforated punching
rod guide member 12 is disposed parallel to the plate 8 and is
secured to the inner surface of the perforated plate 8 by means of
set screws 13. Holes provided in the guide member 12 are in
alignment with the holes 9 in the perforated plate 8 and are
adapted to receive a plurality of spaced punching rods 7,
respectively, which are received in the holes in the rod guide
member 12 to advance into and retract from the respectively
associated holes 9 in the perforated plate 8 in the manner as will
be described hereinafter.
As shown in FIG. 2, a projection 12' extends down from the lower
edge of the punching rod guide member 12 and an upholding member 18
is provided just below the punching rod guide member 12 in
engagement with the projection 12' on the guide member 12. The
upholding member 18 has a shaft 19 extending laterally there
through and suitably journalled at the opposite ends in the side
plates 1 and 1. The upholding member 18 is secured to the shaft 19
so that the upholding member 18 and the shaft 19 always rotate
together. A downwardly extending spring anchoring portion 20 is
also secured to shaft 19 so that the spring anchoring portion 20
and the shaft 19 also rotate together. A cooperating spring
anchoring projection 21 extends downwardly from the bottom of the
front reinforcing bar 2 and a strong coil spring 22 is anchored at
its opposite ends to the cooperating anchoring portion 20 and
anchoring projection 21 so that the strong coil spring 22 biases
the spring anchoring portion 20 and the shaft 19 to which the
spring anchoring portion 20 is secured in a clockwise direction as
viewed in FIGS. 2 and 4. Therefore, since the upholding member 18
is also secured to the shaft 19, the latter is also biased in a
clockwise direction as viewed in FIGS. 2 and 4. Accordingly, the
upholding member 18 urges the assembly consisting of the perforated
plate 8 and punching rod guide member 12 towards the holding-down
bar 10 so that the holding-down bar 10 and upholding member 18
pinch or clamp the perforated plate and punching rod guide member
assembly 8 and 12 therebetween.
The inner surface of the perforated plate 8 is provided with a
recess which extends downwardly from its upper edge to a point
short of the lower edge of the plate 8 to thereby provide a paper
stack receiving opening 14 in cooperation with the outer surface of
the perforated punching rod guide member 12. A shoulder 15 serves
as a stop for limiting the downward movement of the paper sheet
stack when the stack is inserted into the opening as will be
described hereinafter. A pair of adjustable loose leaf paper sheet
stack guide pieces 16 and 16 extend upwardly from the top of the
perforated punching rod guide member 12 and have their lower ends
secured to a pair of adjustable holders 17 and 17 which have
dovetail-shaped lower extensions 17a. The extensions 17a are in
turn adjustably received in a longitudinal dovetail groove 12"
provided in the top of the punching rod guide member 12 for
adjustable slidable movement in the groove 12" toward and away from
each other to thereby provide for varying the space between the
pair of paper sheet stack guide pieces 16 and 16 depending upon the
size of the loose leaf paper sheets in a stack to be perforated.
The guide pieces 16 extend substantially at the same angle as the
stack receiving opening 14 with the outer surface thereof flush
with that of the rod guide member 12. Once the guide pieces 16 and
16 have been moved to a proper position for perforating paper
sheets of a particular size, the holders 17 and 17 are firmly held
in position in the dovetail groove 12' by means of set screws
12a.
The punching rods 7 are provided at their rear end portions with
upwardly extending projections 7' which are fitted in an elongated
slot 24' provided in the under surface of a rod actuation member 24
which is positioned on the punching rods 7 at the rear end portions
of the latter and extends between the side plates 1 and 1 over the
rear reinforcing bar 3 with the opposite ends terminating short of
the side plates. The punching rod guide member 12 has an extention
12'" extending rearwardly and downwardly from the inner surface
thereof and riding over the rod actuation member 24 whereby the rod
actuation member 24 can advance and retract in slidable engagement
with the rod guide member 12 carrying the rods 7 therewith when the
member 24 is actuated in the manner as will become apparent
hereinafter. Pins 25 and 25 extend outwardly from the opposite ends
of the rod actuation member 24 and links 26 and 26 are pivoted at
one end to the pins 25 and 25. The other ends of the links 26 and
26 are pivoted to pins 27 and 27 on arms 28 and 28 which are in
turn pivoted at one end 28' to the pins 27 and fixedly mounted at
the other end on a main shaft 29 which extends between the side
plates 1 and 1 with the opposite ends suitably journalled in the
side plates.
A double bent operation handle 30 extends from the main shaft 29
and has a rear end portion connected to and extending horizontally
from the shaft 29, an intermediate portion extending from the other
end of the rear end portion at an upwardly inclined angle along the
outer surface of the right-hand support plate 1 and an upright
portion extending from the other end of the intermediate portion
and having a hand knob 30' for easy grip. A return spring anchoring
projection 30 extends down from the shaft 29 at a point adjacent to
the end of the shaft adjacent to the left-hand side plate 1 (as
seen in FIG. 1) and a return spring 31 is anchored at one end to
the projection 30. The other end of the return spring 31 is
anchored to a pin 32 which extends inwardly from the left-hand side
plate 1 so that the return spring normally urges the shaft 29 in
the clockwise direction in which the parts of the punching rod
actuation mechanism are held in their non-operative position and
accordingly, the punching rods 7 are held in their retracted
position.
Numeral 33 denotes an adjustable L-shaped paper sheet aligning
ruler which has a longer portion 33' extending along the perforated
plate 8 above the upper edge thereof behind the left-hand paper
stack guide piece 16, a shorter portion 33" connected to the outer
end of the longer portion 33' at right angles thereto and a leg
33"' extending down from the inner end of the longer portion 33' at
right angles thereto. The lower end of the leg 33'" is secured to
an adjustable support member 34 which has a dovetail bottom
slidably received in the dovetail groove 12" in the punching rod
guide member 12 for adjustable movement between the slidable
holders 17. Once adjusted, the support member 34 is held in
position by a set screw. When a stack of loose leaf paper sheets
(not shown) is inserted into the stack receiving opening 14, one
side edge of the paper sheets are caused to abut against the
shorter portion 33" of the ruler 33 to be aligned thereby before
they are perforated by the punching rods 7 so that precisely
aligned holes can be perforated in the paper sheets. It will be
understood that the position of the paper stack guide pieces 16 and
the ruler 33 can be adjusted depending upon the size of the paper
sheets to be perforated by the perforator of the invention.
In operation, a stack of loose leaf paper sheets are first inserted
into the opening 14 until the lower edge of the stack lies on the
shoulder 15 on the perforated plate 8 and then aligned by the
abutment of one side edge of the paper sheets against the shorter
portion 33" of the ruler 33. Thereafter, the handle 30 is pushed
down to rotate the shaft 29 in the counter-clock direction as seen
in FIG. 2 against the force of the return spring 31. The rotation
movement of the shaft 29 in the counter-clock direction causes the
arms 28 having one end fixedly mounted on the shaft to pivot about
the pins 27 and the pivotal movement of the arms 28 advances the
punching rod actuation member 24 in the direction of arrow B as
seen in FIG. 2 in slidable contact with the under surface of the
punching rod guide member projection 12'". As the punching rod
guide member 24 is advanced in the direction of arrow B, the
punching rods 7 are also advanced through the holes in the punching
rod guide member 12 to pass into the aligned holes 9 in the
perforated plate 8 to thereby perforate aligned holes in the paper
sheets. After the perforation operation has been effected, the
handle 30 is released whereupon the return spring 31 rotates the
shaft 29 in the clockwise direction to return the moving parts to
their original position. Thus, it will be understood that in the
preparation stage of the perforation operation, it is only
necessary to align one side edge of the paper sheets in a stack
against the shorter portion 33" of the ruler 33 because the upper
and lower edges of the paper sheets can be automatically aligned
when the lower edges of the paper sheets lie on the shoulder 15 on
the perforated plate 8 after they have been inserted into the
opening 14 to thereby eliminate time-consuming aligning procedure
as necessary in the prior art perforators. Furthermore, since the
pivotal support bar 5 is stowed within the region defined by the
side plates 1 when the perforator is not used, the perforator of
the invention occupies a smaller space than that of prior art
perforators of the corresponding dimensions.
It is to be understood that variations and modifications of the
invention may be made without departing from the scope of the
invention. It is also understood that the scope of the invention is
not to be interpreted as limited to the specific embodiment
disclosed herein, but only in accordance with the appended claims
when read in light of the foregoing disclosure.
* * * * *