GB2425272A - Compression device for output aperture of shredder - Google Patents

Compression device for output aperture of shredder Download PDF

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Publication number
GB2425272A
GB2425272A GB0508149A GB0508149A GB2425272A GB 2425272 A GB2425272 A GB 2425272A GB 0508149 A GB0508149 A GB 0508149A GB 0508149 A GB0508149 A GB 0508149A GB 2425272 A GB2425272 A GB 2425272A
Authority
GB
United Kingdom
Prior art keywords
shredder
compression
compression plate
compression device
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0508149A
Other versions
GB0508149D0 (en
GB2425272B (en
Inventor
Michael John Easton
Michael David Sawford
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Acco UK Ltd
Original Assignee
Acco UK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Acco UK Ltd filed Critical Acco UK Ltd
Priority to GB0508149A priority Critical patent/GB2425272B/en
Publication of GB0508149D0 publication Critical patent/GB0508149D0/en
Priority to EP06007057A priority patent/EP1714701A1/en
Priority to US11/404,056 priority patent/US20070023552A1/en
Publication of GB2425272A publication Critical patent/GB2425272A/en
Application granted granted Critical
Publication of GB2425272B publication Critical patent/GB2425272B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
    • B30B9/3003—Details
    • B30B9/3035—Means for conditioning the material to be pressed, e.g. paper shredding means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/22—Feed or discharge means
    • B02C18/2225—Feed means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
    • B30B9/3082—Presses specially adapted for particular purposes for baling; Compression boxes therefor with compression means other than rams performing a rectilinear movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
    • B02C2018/0061—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents with compacting devices for the disintegrated material

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

A compression device (2), is adapted for use with a shredder (1) having an output aperture (7) from which shredded material is output. At least one compression plate (10, 11) acts to impede the flow of at least some shredded material away from the output aperture (7) of the shredder (1), thereby compressing the shredded material. Compression of the shredded material takes place prior to collection thereof in a receptacle, and more shredded material may therefore be collected before the receptacle requires to be emptied. The compression plate(s) may be movable from a first position where they impede the flow of materials to one where the flow is not impeded and vice-versa.

Description

Title: Improvements Relating to Shredders
Description of Invention
The invention relates to the compression of shredded material output from a shredder.
Conventional shredders, particularly so-called straight cut shredders, output strips of shredded material, e.g. paper. The strips of shredded material are substantially uncompressed, and can quickly fill a receptacle used to collect them, It is desirable to compress the shredded material in some way, to extend the usage of the receptacle.
According to a first aspect of the invention there is provided a compression device, adapted for use with a shredder having an output aperture from which shredded material is output, comprising at least one compression plate, adapted for attachment at the output aperture of the shredder, which acts to impede the flow of at least some shredded material away from the output aperture of the shredder, thereby compressing the shredded material.
Compression of the shredded material takes place prior to collection thereof in a receptacle, and more shredded material may therefore be collected before the receptacle requires to be emptied.
The compression device may comprise a second compression plate, adapted for attachment at the output aperture of the shredder. The second compression plate may act to impede the flow of at least some shredded material away from the output aperture of the shredder, thereby compressing the shredded material. The second compression plate may act in conjunction with the first compression plate, to impede the flow of at least some shredded material away from the output aperture of the shredder, thereby compressing the shredded material.
The or each compression plate may be movable from a first position in which it acts to impede the flow of shredded material away from the output aperture of the shredder, to a second position in which the shredded material is allowed to flow away from the output aperture of the shredder. The or each compression plate may be movable from the second position in which the shredded material is allowed to flow away from the output aperture of the shredder to the first position in which it acts to impede the flow of shredded material away from the output aperture of the shredder.
For the or each compression plate, the movement from the first position to the second position may be gradual. For the or each compression plate, the movement from the second position to the first position may be gradual. For the or each compression plate, the gradual movement may be caused by increasing or decreasing pressure exerted by impeded, compressed, shredded material on the compression plate. The or each compression plate may be tensioned to produce gradual movement from the first position to the second position. The or each compression plate may be tensioned to produce gradual movement from the second position to the first position. The or each compression plate may be tensioned by at least one resilient member, for example a spring or an elastic band, fixed between the compression plate and the shredder.
For the or each compression plate, the movement between the first position and the second position may be abrupt. For the or each compression plate, the movement between the second position and the first position may be abrupt. For the or each compression plate, the abrupt movement from the first position to the second position may take place when the pressure exerted by impeded, compressed, shredded material on the compression plate equals, or substantially equals, a predetermined level. For the or each compression plate, the abrupt movement from the second position to the first position may take place when the pressure exerted by impeded, compressed, shredded material on the compression plate falls below a predetermined level. The or each compression plate may comprise a resilient member, which is designed to move abruptly from the first position to the second position when the pressure of the material on the plate equals or substantially equals a predetermined level. The or each compression plate may comprise a resilient member, which is designed to move abruptly from the second position to the first position when the pressure of the material on the plate drops below a predetermined level. The compression device or the shredder may be provided with one or more pressure sensing and actuating elements, to measure the pressure on the or each compression plate, and to cause the compression plate to move abruptly from the first position to the second position when the pressure on the plate equals or substantially equals a predetermined level. The compression device or the shredder may be provided with one or more pressure sensing and actuating elements, to measure the pressure on the or each compression plate, and to cause the compression plate to move abruptly from the second position to the first position when the pressure on the plate drops below a predetermined level.
The or each plate may be hingeably attached to the shredder at the output aperture thereof. The or each plate may be hingeably attached to the shredder by means of hinges, or fasteners or gluing.
The or each compression plate may be elongate in shape, to impede the flow of shredded material away from an elongate output aperture of the shredder.
The or each elongate compression plate may have a first elongate edge and a second elongate edge joined to the first elongate edge by first and second end edges of the compression plate. The first and second elongate edges may each have a length which is substantially equal to or greater than the length of elongate edges of the output aperture of the shredder. For the or each compression plate, a first elongate edge of the compression plate may be attached to the shredder alongside an elongate edge of the output aperture.
When the compression device comprises two compression plates, a first elongate edge of a first compression plate may be attached to the shredder alongside a first elongate edge of the output aperture, and a first elongate edge of a second compression plate may be attached to the shredder alongside a second elongate edge of the output aperture.
When the compression device comprises two compression plates, these may be attached to the shredder to form a substantially V-shaped compartment adjacent the output aperture of the shredder, when the compression plates are each in the first position. The compression plates may each be attached to the shredder by a first elongate edge thereof, and may meet or overlap at a second elongate edge thereof to form the chamber.
The shredded material may be compressed between the or each compression plate and a shredding head of the shredder.
The shredded material may comprise a plurality of strips of material, e.g. paper, and may be compressed by causing at least some of the strips of material to concertina.
According to a second aspect of the invention there is provided in combination, a shredder and a compression device according to the first aspect of the invention.
An embodiment of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 is a perspective view of a shredder and a compression device according to the first aspect of the invention; Figure 2 is a cross sectional view of the shredder and the compression device of Figure 1, shown with compression plates of the compression device in a first position, and Figure 3 is a cross sectional view of the shredder and the compression device of Figure 1, shown with compression plates of the compression device in a second position.
Figures 1, 2 and 3 show a shredder I and a compression device 2. The shredder comprises a casing which is generally box-shaped, and comprises four sides 3 (only two of which are visible in each of the Figures), which join a first face 4, and a second face 5. The first face 4 is provided with an elongate input aperture 6, through which material, such as paper, which is to be shredded is fed into the shredder. The second face 5 is provided with an elongate output aperture 7, from which shredded material is output from the shredder. The shredder casing contains a shredding head 8, which receives material from the input aperture 6, shreds it, and outputs the shredded material to the output aperture 7. The shredding head 8 may shred the material into elongate strips. The shredder may be designed to fit onto a receptacle for the shredded material, i.e. may comprise a so-called bin-top' shredder. Alternatively, the shredder may be positioned over a receptacle for the shredded material. Such shredders are often referred to as cabinet' shredders. In either case, in use, the first face 4 of the shredder comprises an upper, generally horizontal surface of the shredder, and the second face 5 comprises a lower, generally horizontal surface of the shredder. Material may be easily fed into the shredder through the elongate input aperture 6 in the upper face 4, and shredded material may easily fall away from the elongate output aperture 7 in the lower face 5 under the influence of gravity, into the receptacle beneath the shredder.
The compression device 2 comprises a first compression plate 10 and a second compression plate 11. Each compression plate is elongate in shape, and comprises a first elongate edge 12 and a second elongate edge 13 joined to the first elongate edge 12 by first and second end edges 14, 15. The first and second elongate edges 12, 13 each have a length which is substantially equal to or greater than the length of elongate edges of the elongate output aperture 7 of the shredder. For each compression plate 10, 11, the first elongate edge 12 is attached to the face 5 of the shredder alongside opposite elongate edges of the output aperture 7, as shown. The attachment may be by any suitable fastening means, such as a strip of adhesive fastener 16, which, for each compression plate, is adhered to the edge 12 of each plate and the face 5 of the shredder, to attach the plate to the shredder. Each compression plate 10, 11 is hingeably attached to the shredder by the adhesive fastener, such that the plate is movable from a first position (shown in Figure 2) in which it acts to impede the flow of shredded material away from the output aperture 7 of the shredder, to a second position (shown in Figure 3) in which the shredded material is allowed to flow away from the output aperture 7 of the shredder, and from the second position to the first position.
When in the first position, the compression plates 10, 11 overlap at their second elongate edges 13, and form a substantially V-shaped compartment adjacent the output aperture 7 of the shredder. Each compression plate 10, 11 is tensioned by a resilient member 17, comprising an elastic band, which is fixed to the shredder over a portion of the compression plate, as shown. Each resilient member acts to bias the plate over which it is fixed into the first position, and controls movement of the plate from the first position to the second position and vice versa.
The compression plates of the compression device are attached to the shredder, as described above, and the shredder/compression device combination placed over a receptacle for use. The compression plates 10, 11 are each biased by the resilient members 15 into their first position, shown in Figure 2. Material to be shredded is fed through the input aperture 7 of the shredder and is shredded by the shredding head 8 into strips of shredded material. The strips of shredded material are output from the shredding head in a relatively uncompressed form. The strips of shredded material are output from the shredder through the output aperture 7. Flow of the strips away from the output aperture is impeded by the compression plates 10, 11 in their first position (Figure 1), and this causes the strips to be compressed between the plates and the shredding head of the shredder, into a concertina shape. As more strips of shredded material are output from the output aperture 7, the pressure exerted by the strips on each compression plate increases. This gradually overcomes the tension of each plate, to produce gradual movement thereof from the first position to, or at least towards, the second position, shown in Figure 3. As each compression plate moves from its first position towards its second position, compression of the strips of shredded material will continue. As the pressure exerted on each compression plate by the strips of shredded material decreases (e.g. due to a fall-off in the volume of material being input into the shredder) each plate will move towards its first position.
When the compression plates reach their second position, the compressed strips of shredded material are allowed to flow away from the output aperture 7 into a receptacle (not shown) for their collection. Compression of the strips of shredded material prior to collection thereof in the receptacle, allows more shredded material to be collected before the receptacle requires to be emptied.
When used in this specification and claims, the terms ucomprisesu and "comprising" and variations thereof mean that the specified features, steps or integers are included. The terms are not to be interpreted to exclude the presence of other features, steps or components.
The features disclosed in the foregoing description, or the following claims, or the accompanying drawings, expressed in their specific forms or in terms of a means for performing the disclosed function, or a method or process for attaining the disclosed result, as appropriate, may, separately, or in any combination of such features, be utilised for realising the invention in diverse forms thereof.

Claims (21)

1. A compression device, adapted for use with a shredder having an output aperture from which shredded material is output, comprising at least one compression plate, adapted for attachment at the output aperture of the shredder, which acts to impede the flow of at least some shredded material away from the output aperture of the shredder, thereby compressing the shredded material.
2. A compression device according to claim I comprising a second compression plate, adapted for attachment at the output aperture of the shredder, which acts to impede the flow of at least some shredded material away from the output aperture of the shredder, thereby compressing the shredded material.
3. A compression device according to claim I or claim 2 in which the or each compression plate is movable from a first position in which it acts to impede the flow of shredded material away from the output aperture of the shredder, to a second position in which the shredded material is allowed to flow away from the output aperture of the shredder.
4. A compression device according to any preceding claim in which the or each compression plate is movable from the second position in which the shredded material is allowed to flow away from the output aperture of the shredder to the first position in which it acts to impede the flow of shredded material away from the output aperture of the shredder.
5. A compression device according to claim 3 or claim 4 in which for the or each compression plate, the movement from the first position to the second position is gradual.
6. A compression device according to claim 3 or claim 4 in which for the or each compression plate, the movement from the second position to the first position is gradual.
7. A compression device according to claim 5 or claim 6 in which the or each compression plate is tensioned to produce gradual movement from the first position to the second position, and from the second position to the first position.
8. A compression device according to claim 7 in which the or each compression plate is tensioned by at least one resilient member fixed between the compression plate and the shredder.
9. A compression device according to claim 3 or claim 4 in which for the or each compression plate, the movement between the first position and the second position is abrupt.
10. A compression device according to claim 3 or claim 4 in which for the or each compression plate, the movement between the second position and the first position is abrupt.
11. A compression device according to claim 9 in which for the or each compression plate, the abrupt movement from the first position to the second position takes place when the pressure exerted by impeded, compressed, shredded material on the compression plate equals, or substantially equals, a predetermined level.
12. A compression device according to claim 10 in which for the or each compression plate, the abrupt movement from the second position to the first position takes place when the pressure exerted by impeded, compressed, shredded material on the compression plate falls below a predetermined level.
13. A compression device according to claim 11 in which the or each compression plate comprises a resilient member, which is designed to move abruptly from the first position to the second position when the pressure of the material on the plate equals or substantially equals a predetermined level.
14. A compression device according to claim 12 in which the or each compression plate comprises a resilient member, which is designed to move abruptly from the second position to the first position when the pressure of the material on the plate drops below a predetermined level.
15. A compression device according to claim 11 in which the compression device or the shredder is provided with one or more pressure sensing and actuating elements, to measure the pressure on the or each compression plate, and to cause the compression plate to move abruptly from the first position to the second position when the pressure on the plate equals or substantially equals a predetermined level.
16. A compression device according to claim 12 in which the compression device or the shredder is provided with one or more pressure sensing and actuating elements, to measure the pressure on the or each compression plate, and to cause the compression plate to move abruptly from the second position to the first position when the pressure on the plate drops below a predetermined level.
17. A compression device according to any preceding claim in which the or each compression plate is elongate in shape, to impede the flow of shredded material away from an elongate output aperture of the shredder.
18. A compression device according to any of claims 2 to 17 in which a first elongate edge of a first compression plate is attached to the shredder alongside a first elongate edge of the output aperture, and a first elongate edge of a second compression plate is attached to the shredder alongside a second elongate edge of the output aperture.
19. A compression device according to any preceding claim in which the shredded material comprises a plurality of strips of material, and is compressed by causing at least some of the strips of material to concertina.
20. A compression device substantially as described herein with reference to the accompanying drawings.
21. In combination, a shredder and a compression device according to any of claims 1 to 20.
GB0508149A 2005-04-22 2005-04-22 Improvements relating to shredders Expired - Lifetime GB2425272B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB0508149A GB2425272B (en) 2005-04-22 2005-04-22 Improvements relating to shredders
EP06007057A EP1714701A1 (en) 2005-04-22 2006-04-03 Shredder with compacting plates
US11/404,056 US20070023552A1 (en) 2005-04-22 2006-04-13 Shredders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0508149A GB2425272B (en) 2005-04-22 2005-04-22 Improvements relating to shredders

Publications (3)

Publication Number Publication Date
GB0508149D0 GB0508149D0 (en) 2005-06-01
GB2425272A true GB2425272A (en) 2006-10-25
GB2425272B GB2425272B (en) 2009-01-07

Family

ID=34639947

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0508149A Expired - Lifetime GB2425272B (en) 2005-04-22 2005-04-22 Improvements relating to shredders

Country Status (3)

Country Link
US (1) US20070023552A1 (en)
EP (1) EP1714701A1 (en)
GB (1) GB2425272B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7537176B2 (en) * 2007-05-11 2009-05-26 Jinlong Shen Shredder with shreds containment and safety mechanisms
NL2006618C2 (en) * 2011-04-18 2012-10-22 Keywaste B V PRESS DEVICE.
US9027862B2 (en) * 2011-04-21 2015-05-12 Enable International Limited Shredder that produces crinkle paper stripes
US20140263782A1 (en) * 2013-03-13 2014-09-18 ACCO Brands Corporation Paper shredder with output deflector
GB2613589A (en) * 2021-12-07 2023-06-14 Brightthing Brands Ltd Combined shredding and compressing system

Citations (5)

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Publication number Priority date Publication date Assignee Title
US3754498A (en) * 1971-12-17 1973-08-28 R Gil Apparatus for shredding and baling paper
DE2720341A1 (en) * 1977-05-06 1978-11-09 Edgard Jacques Maillet Heterogeneous product drum shredder - has grille partly enclosing drum in sectors pivoted by hydraulic rams
US4410315A (en) * 1980-10-03 1983-10-18 Beloit Corporation Low velocity trim removal means and method
US5134013A (en) * 1989-11-02 1992-07-28 Eco-Pack Industries, Inc. Folding and crimping apparatus
US6276621B1 (en) * 1999-11-22 2001-08-21 Bell & Howell Mail And Messaging Technologies Company Cutter module with an integrated trim disposal mechanism

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US4410086A (en) * 1982-03-05 1983-10-18 Simpson James L Medical appliance disposal container
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US4520926A (en) * 1984-02-27 1985-06-04 Winfield Corp. Container for sharps
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US5637099A (en) * 1994-06-09 1997-06-10 Durdin; Daniel J. Needle handling apparatus and methods
JP2001300339A (en) * 2000-04-18 2001-10-30 Taisei Denki Kogyo Kk Trash compressing device with shredder
US6957784B1 (en) * 2004-12-17 2005-10-25 Majestic Industries, Inc. Bottle crushing system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754498A (en) * 1971-12-17 1973-08-28 R Gil Apparatus for shredding and baling paper
DE2720341A1 (en) * 1977-05-06 1978-11-09 Edgard Jacques Maillet Heterogeneous product drum shredder - has grille partly enclosing drum in sectors pivoted by hydraulic rams
US4410315A (en) * 1980-10-03 1983-10-18 Beloit Corporation Low velocity trim removal means and method
US5134013A (en) * 1989-11-02 1992-07-28 Eco-Pack Industries, Inc. Folding and crimping apparatus
US5134013B1 (en) * 1989-11-02 1998-01-20 Ranpak Corp Folding and crimping apparatus
US6276621B1 (en) * 1999-11-22 2001-08-21 Bell & Howell Mail And Messaging Technologies Company Cutter module with an integrated trim disposal mechanism

Also Published As

Publication number Publication date
GB0508149D0 (en) 2005-06-01
EP1714701A1 (en) 2006-10-25
US20070023552A1 (en) 2007-02-01
GB2425272B (en) 2009-01-07

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PE20 Patent expired after termination of 20 years

Expiry date: 20250421