U.S. patent number 3,754,498 [Application Number 05/209,147] was granted by the patent office on 1973-08-28 for apparatus for shredding and baling paper.
Invention is credited to Roland Gil.
United States Patent |
3,754,498 |
Gil |
August 28, 1973 |
APPARATUS FOR SHREDDING AND BALING PAPER
Abstract
A paper shredder and baler comprises a pair of rotary shredding
members at the bottom of a hopper, and a rotor having resilient
flaps in the hopper that both feed paper to the rotors and protect
the operator. The shredded paper falls by gravity into an inclined
baling compartment where a hydraulic jack forces a plate along a
downwardly inclined path to compress the shredded paper. Safety
controls prevent the shredder and the press from operating
simultaneously, and prevent the press from operating until the
baling compartment is closed.
Inventors: |
Gil; Roland (Levallois,
FR) |
Family
ID: |
22777543 |
Appl.
No.: |
05/209,147 |
Filed: |
December 17, 1971 |
Current U.S.
Class: |
100/353; 83/167;
100/97; 100/100; 100/255; 100/269.01 |
Current CPC
Class: |
B30B
15/08 (20130101); B30B 9/3035 (20130101); B02C
18/0007 (20130101); B30B 9/3057 (20130101); B02C
2018/0061 (20130101); Y10T 83/222 (20150401) |
Current International
Class: |
B30B
9/30 (20060101); B30B 9/00 (20060101); B02C
18/00 (20060101); B30b 015/08 () |
Field of
Search: |
;100/53,255,96,97,100,229A,269R ;241/99,100,159,222
;83/167,423,925R |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Wilhite; Billy J.
Claims
Having described my invention, I claim:
1. Apparatus for shredding and compressing paper, comprising a
hopper for paper to be shredded, knives at the bottom of the hopper
for shredding the paper, means for feeding paper to said knives,
said feeding means comprising a rotor having flexible paddles
thereon that directly overlie said knives and that protect the
operator from contact with the knives, a receptacle below the paper
shredding means for collecting the shredded paper from said knives,
and means for compressing the shredded paper in said
receptacle.
2. Apparatus as claimed in claim 1, and a pair of rotating members
on which said knives are mounted, said knives being disposed above
said receptacle for gravity feed of shredded paper from said knives
to said receptacle.
3. Apparatus as claimed in claim 2, said receptacle being elongated
and having one end disposed in a casing that houses said shredding
means, the other end of said receptacle extending out of said
casing.
4. Apparatus as claimed in claim 3, said receptacle being inclined
downwardly from said one end to said other end of the
receptacle.
5. Apparatus as claimed in claim 1, said compressing means
comprising a wall of said receptacle mounted for sliding movement
in said receptacle, and fluid-pressure means for moving said wall
relative to said receptacle for compressing shredded paper in said
receptacle.
6. Apparatus as claimed in claim 1, said receptacle being elongated
and having one end disposed within a casing that houses said
shredding means, the other end of said receptacle extending out of
said casing, said compressing means comprising a plate which
constitutes one end wall of said receptacle and a hydraulic jack
for reciprocating said plate in said receptacle, means mounting
said jack solely on said receptacle, a pump for said jack carried
by said casing, and detachable means interconnecting said pump and
jack.
7. Apparatus as claimed in claim 1, and means preventing operation
of the compressing means during operation of said shredding means,
and means preventing operation of said shredding means during
operation of said compressing means.
8. Apparatus as claimed in claim 1, and a protective casing about
said knives, said casing having a slot through which said rotor
feeds said paper to be shredded, the blades of said rotor closing
said slot.
Description
The present invention relates to destroying paper and the like by
shredding the same and then compressing it to a condition in which
it can easily be baled.
Numerous machines are already known for destroying papers and
documents and the like, comprising a casing, power-driven knives
for cutting and destroying the material, and a receptacle to
receive the cut material. However, if the volume of the paper to be
destroyed is large, then the volume of the destroyed paper will
also be large and its disposal poses a problem.
It has already been proposed to convey the destroyed paper to a
baler, and such a baler has been arranged side by side with the
machine for destroying the paper. However, the labor required for
the conveyance of the destroyed paper to the baler, and the space
occpuied by the various units, make this arrangement
impractical.
Accordingly, an object of the present invention is the provision of
apparatus for destroying paper and for reducing the destroyed paper
to a desirably small volume.
Another object of the present ivnention is the provision of an
apparatus for destroying the compressing paper, in which maximum
safety for the operator is ensured.
Finally, it is an object of the present invention to provide
apparatus for destroying and compressing paper, which will be
relatively simple and inexpensive to manufacture, easy to install,
operate, maintain and repair, and rugged and durable in use.
Briefly, these objects are achieved by providing apparatus that is
characterized by a hopper for receiving the paper to be destroyed,
the hopper having a rotatable paper feeder therein with flexible
paddles thereon which feed the paper toward rotary cutting knives
and at the same time protect the operator from contact with those
knives. The cut paper falls into a receptacle in which a
reciprocable plate of a press is slidable and in which the paper is
compressed to a bale which is then removed through a wall of the
receptacle. Electrical controls for the apparatus are provided for
the protection of the operator, such that the cutting and pressing
operations cannot be simultaneously conducted, and such that the
pressing operation cannot be conducted until the baling compartment
is closed.
Other objects, features and advantages of the present invention
will become apparent from a consideration of the following
description, taken in connection with the accompanying drawings, in
which:
FIG. 1 is a perspective view of apparatus according to the present
invention;
FIG. 2 is a side cross-sectional view taken in the vertical plan of
the line II--II of FIG. 1; and
FIG. 3 is a fragmentary electric circuit diagram of the
apparatus.
Referring now to the drawings in greater detail, and first to FIG.
1, there is shown apparatus according to the present invention
comprising a casing 1 which in its upper part has a hopper 4 at the
bottom of which are rotary cylinders in the form of rotary knives
3a and 3b such as are disclosed in French Patent No. 1,226,633,
rotated in known fashion by a motor 2. Motor 2 also drives a feed
rotor 5 that presses paper in the hopper against the knives 3a and
3b, the rotor 5 being in the form of a square shaft having paddles
of rubber or other flexible material secured to each side thereof.
These flexible paddles also serve the purpose of preventing the
operator's hands from coming into contact with the knives.
Below the knives, an inclined plate ensures the gravity feed of the
cut paper to a receptacle 6 through an opening 7 that can be
selectively closed by a door 8. The receptacle 6 is inclined, and
its upper end is disposed within casing 1 and may be secured to the
inner side walls thereof by means of screws and nuts (not shown) or
by other means of support. The lower end of receptacle 6 may rest
directly on the ground or on rollers as shown.
The upper end wall of receptacle 6, which appears at the upper
right of receptacle 6 in FIG. 2, is comprised by a press plate 9
which is secured to the piston rod 10 of a cylinder and piston
assembly that comprises a jack 11 that is supported on a bracket 12
that is secured only to receptacle 6. A pump 22 carried by casing 1
is interconnected by detachable flexible conduits with opposite
ends of the cylinder of jack 11. The jack 11 and receptacle 6 are
thus readily separable as a unit from casing 1 by disconnecting the
flexible connections of pump 22 and by disconnecting the other
connections referred to above.
The upper side of receptacle 6 is closed by a door 13 which is
swingably interconected with receptacle 6 by means of hinges 14, 15
and which has a handle 16 for raising and lowering it. At the side
of door 13 opposite hinges 14, 15, the door extends down over a
portion of the side of receptacle 6, for easier access to the baled
paper therein. Receptacle 6 can thus be opened along its top and
part of one side, by opening the door 13. A conventional lock 17 is
provided for preventing inadvertent opening of the door.
The operation of the device can be easily followed by reference to
the fragmentary circuit diagram of FIG. 3. The drive motor for the
rotor 5 and the knives 3a and 3b is shown at 2, and the push-button
switches 18, 19 for starting and stopping the motor are also shown.
The switch 20 for actuating the motor that drives pump 22 is also
shown, as well as the switches 21 and 24 for operating solenoid
valves that selectively direct hydraulic fluid to one end or the
other of the cylinder of jack 11, thereby to advance or retract
plate 9.
The machine is turned on by turning the lock 23 on the control
panel by means of a key, whereupon switch 20 can be actuated
whereby pump 22 is driven. The motor 2 can be actuated by closing
the switch 18. Paper is fed to hoppper 4 and is shredded by the
knives. The shredded paper falls into the receptacle 6 as explained
above; and when there is sufficient paper therein, the door 8 can
be closed which releases the switch 25 to stop the motor 2 and
hence to stop the knives. Switch 21 can then be actuated to advance
plate 9 in receptacle 6 to compress the shredded paper; and if
desired, the door 8 or 13 can actuate a control (not shown) to
advance the plate 9 when door 8 is closed, this control
deactivating the press when door 8 or 13 is open. Door 13 is closed
and lock 17 is manipulated to hold door 13 closed during operation
of the press.
In any event, the plate 9 compresses the shredded paper in
receptacle 6 to a bale which can then be tied if desired, and plate
9 can then be retracted by operation of switch 24.
Door 13 can then be opened and the bale removed. To repeat the
cycle, door 8 is opened and motor 2 can then be actuated through
switch 18, and further paper can be shredded and baled.
Door 13 can also be provided with a window 26 extending lengthwise
thereof, for viewing the interior of receptacle 6 when door 13 is
closed.
From a consideration of the foregoing disclosure, it will be
evident that all of the initially recited objects of the present
invention have been achieved. Although the present invention has
been described and illustrated in connection with a preferred
embodiment, it is to be understood that modifications and
variations may be resorted to without departing from the spirit of
the invention, as those skilled in this art will readily
understand. Such modifications and variations are considered to be
within the purview and scope of the present invention as defined by
the appended claims.
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