US3711034A - Shredder for documents and the like - Google Patents

Shredder for documents and the like Download PDF

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Publication number
US3711034A
US3711034A US3711034DA US3711034A US 3711034 A US3711034 A US 3711034A US 3711034D A US3711034D A US 3711034DA US 3711034 A US3711034 A US 3711034A
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US
United States
Prior art keywords
cover portion
housing section
shredder
section
base section
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.)
Expired - Lifetime
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English (en)
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A Ehinger
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Individual
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Individual
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Publication of US3711034A publication Critical patent/US3711034A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
    • D21B1/08—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods the raw material being waste paper; the raw material being rags
    • D21B1/10—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods the raw material being waste paper; the raw material being rags by cutting actions
    • 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
    • B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
    • B02C2018/0046—Shape or construction of frames, housings or casings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Definitions

  • Means mounts the cover portion on the housl5 l F d f Search 24 /3 /13, 36; ing portion in such a manner that is is pivotably dis- 248/134 placeable relative thereto between an operative position in which the outlet registers with the inlet and an [56] References Cited inoperative position in which the outlet is upwardly displaced relative to and out of registry with the inlet UNITED STATES PATENTS so as to expose the same.
  • Further means may be pro- 929,960 8/1909 Low ..241
  • the present invention relates generally to a shredder, 5
  • Document shredders are already well known, finding relatively wide use in industry, for prison purposes and for military purposes where documents and similar materials are to be shredded, that is to be reduced to portions of such size as to make itimpossible to piece them together and reassembly the original document whose contents are intended to be kept secret.
  • Known shredding devices for this purpose have a housing provided with an upper cover portion which is either of one part with the main housing the latter of which accommodates the shredded materials, or which is releasably placed upon the main housing. The latter is provided with a door in one of its lateral sides through which the shredded materials can be removed. Frequently a receptacle is accommodated in the interior of the main housing into which receptacle the shredded materials will fall, and which receptacle can be removed and replaced through this door.
  • the known shredding devices are satisfactory. However, they have a disadvantage in their size requirements because the lateral door for removal of the shredded materials makes it necessary to provide more space than the actual floor space required by the outline of the main housing itself. Space, however, is frequently at a premium in offices and other locations and it is therefore a disadvantage that such additional space is required to permit opening and closing of the door, and removal of the shredded materials therethrough.
  • a further disadvantage of the known constructions is the fact that the known shredding devices must be relatively closely supervised because there is nothing to prevent the actual shredding unit from continuing operation even if the space provided for accommodating the shredded materials is filled to overflowing.
  • the back pressure of excess shredded materials may lift the cover portion with the actual shredding unit off the main housing if the cover portion is of the removable type, thereby more or less exposing the shredding unit and endangering personnel who might inadvertently move a limb into the reach of the shredding unit in attempting to replace the cover portion.
  • a concomitant object of the invention is to provide such a shredder which is provided with a safetyarrangement for terminating operation of the shredding unit in the upper cover portion in automatic response to displacement of the latter pivotably with reference to the main housing portion.
  • a shredder for documents and the like which, briefly stated, comprises a lower housing portion adapted to receive shredded documents and being provided with an upper inlet, and an upper cover portion adapted to contain a shredding unit for shredding of documents and analogus materials, and having an outlet.
  • Means is provided mounting the cover portion on the housing section portion pivotably displaceable relative thereto between an operative position in which the outlet registers with the inlet, and an inoperative position in which the outlet is upwardly displaced relative to and out of registry with the inlet so as to expose the same.
  • the housing section itself may be pivotably mounted on a stationary base section.
  • the two sections, as well as the housing section and the cover portion, may be connected with one another through motion-transmitting means, such as a rod-linkage or a rope-linkage or the like, which enforces pivotal displacement of the housing section with reference to be base section in response to pivotal displacement of the cover portion with reference to the housing section through for instance at least 90.
  • the pivotal displacement be in mutually opposite directions, that is, that the upper cover portion be pivotally displaced in one direction with reference to the housing section, whereas the housing section is displaced pivotally with reference to the base section in an opposite direction.
  • the upper cover portion should at all times remain located entirely within the outlines of the lower base section and then pivoted to the maximum extent so as not to require additional space.
  • the latter feature makes it possible to place a shredder according to thepresent invention directly or almost directly against a wall, a desk or the like with its back, because when the upper cover portion is pivotably displaced in the direction towards the wall, the desk or the like with reference to the upper section of the main housing, it is not necessary to move the shredder away from the wall, desk or the like at all. Instead, the upper section is pivotably displaced'outwardly away from the wall, desk or the like in response to displacement of the cover portion towards the wall, desk or the like. Because the housing cover portion is carried by the upper section, the it moves forwardly away from the wall, etc. at the same time as it is pivotably displaced towards it, so that it will always remain out of actual abutment therewith.
  • the forward tilting or pivotal displacement of the housing section provides for readier access to the interior thereof, because it offers the upper inlet opening of the upper section to an operator so that he or she can readily remove from the housing section a receptaclesuch as a bag or the likethrough this inlet.
  • the shredder according to the present invention makes it possible in a very simple manner to provide for automatic deactivation of the shredding unit accommodated in the upper cover portion whenever the latter is pivotably displaced with reference to the housing section.
  • automatic deactivation occurs when the receptacle in the main housing is filled to the maximum permissible extent, because at that time back pressure of the shredded material will act upon the upper cover portion in a sense raising the latter and slightly displacing it pivotably as indicated.
  • I provide a cut-off switch which is so arranged that even a slight raising will interrupt the electric circuit to the usually electrically operated shredding unit accommodated in the upper cover portion so that it becomes impossible to shred further documents until the shredded material already accommodated in the housing section is removed.
  • the relative displacement of the various components of the shredder according to the present invention is assisted by counterbalancing means, such as springs, so that such displacement can occur without the exercise of any substantial forces and without difficulty.
  • counterbalancing means such as springs
  • This is particularly important as concerns the upper cover portion which is relatively heavy due to the presence of the relatively heavy shredding unit.
  • FIG. 1 is a diagrammatic top-plan view of a shredder according to the present invention.
  • FIG. 2 is a vertical sectional elevation taken on line llll of FIG. 1;
  • FIG. 3 is a view similar to FIG. 2 but showing the shredder according to the present invention in opened condition.
  • FIG. I have illustrated a top-plan view of my novel shredder in which only the upper cover portion 1 is visible.
  • the outline of the unit need not be quadratic as shown, but could be rectangular, generally polygonal or otherwise configurated if desired.
  • the quadratic showing is simply for the purpose of illustration.
  • FIG. 2 shows that the shredder according to the present invention in addition to the upper cover portion 1 comprises a housing section 2 and a lower base section 3.
  • the lower base section 3 may rest with its bottom surface on the ground, or it may be placed on rollers, wheels or the like.
  • the cross-sectional configuration of the components 1, 2 and 3 is identical and when the unit is closed as shown in FIG.
  • the actual shredding unit which shreds the documents and similar material is of no importance for the purposes of the present invention other than to point out that it will be present in a device of this character, it has been shown only in phantom lines and identified with reference characters SU. Any of the shredding units known for this purpose can be vemployed. However, it will be located in the upper cover portion 1 and documents will for instance be fed to it through the slot S shown in FIG. 1. Once shredded, the material will fall through the outlet opening 1 a (see FIG. 3) of the upper cover portion 1 into the inlet of the housing section 2 which latter may accommodate a bag, a basket, or another receptacle into which the shredded materials can fall.
  • the upper cover portion 1 is pivotably mounted at the upper edge of the upper section 2 for turning movement about a substantially horizontal axis 4 located at one lateral side of the housing section 2.
  • This side ' is the rear side, namely the side which will normally face a wall 16 or the like.
  • the housing section 2 is pivotably connected with the upper edge of the lower base section 3 for turning movement about another substantially horizontal axis 5 which, however, is located at the opposite lateral side from the axis 4, that is at the side of the unit which will normally be facing away from the wall 16.
  • the components I, 2 and 3 are connected via suitable means, for instance linkage means, in a sense effecting their relative displacement when the upper cover portion 1 is displaced.
  • suitable means for instance linkage means, in a sense effecting their relative displacement when the upper cover portion 1 is displaced.
  • linkage means for instance linkage means
  • a double-armed lever forming part of linkage means having two arms 6' and 6 a of unequal length which are pivotably jointed at 7. At 7 they are also secured to the lower edge portion of the upper section 2 (compare FIG. 3) and one free end of the arm 6 a is identified with reference numeral 8 and normally abuts and bears upon the interior side of the bottom of the section 3, whereas the other free end 9 of the arm 6 is pivotably connected with a linkage rod 10 which forms another part of the linkage means.
  • the upper end of the linkage rod 10 is pivotably connected with an arcuate guide member 11 which is fixed at ll a to the upper cover portion 1 as illustrated and which is guided for movement between rollers 12 mounted ina plate member 13 which is rigidly connected to one lateral side of the upper section 2.
  • Components 11 and 12 form further parts of the linkage means.
  • the member 11 assures proper guidance of the upper cover portion 1 during pivoting thereof about the axis 4 from closed position to open position shown in FIG. 3, and vice versa.
  • a tension spring 14 is provided whose opposite ends are respectively connected to the section 2 and to the linkage rod and which assists in displacement of the upper cover portion 1 with reference to the section 2, in effect constituting the counterbalancing means for the weights which are to be displaced.
  • FIG. 3 A consideration of FIG. 3 will clearly show that because of the inventive construction even full opening movement of the upper cover portion 1 will not cause the same to abut against the wall 16, due to the simultaneous tilting of the housing section 2 in the opposite direction about the axis 5. It should be pointed out, incidentally, that the tilting of the housing section 2 with reference to he section 3 is relatively minor and does not require much space, but is sufficient to clearly and advantageously present the inlet opening to a person wishing to remove the receptacle containing the shredded materials. It is further pointed out that the center of gravity C of the upper cover portion 1 will always be located within the outline of the lower base section 3, even when the upper cover portion 1 is tilted to the maximum possible extent. This is indicated by the arrow which makes it clear that a vertical projection taken from the center C downwardly will be evidently located within the outline of the section 3, thus assuring that tipping-over is avoided under all circumstances.
  • I further provide a cut-off switch 17 which in the illustrated embodiment is located at the edge of the upper cover portion 1 bounding the outlet la thereof and which is known per se from the art in many different suitable constructions. It is also known from the art how such a switch can be connected by way of an operative connection (suggested in phantom lines in FIG. 3) with the shredding unit SU so as to interrupt the supply of electrical energy to the latter when the upper cover portion 1 is displaced from the position shown in FIG. 2 although not necessarily to theextent shown in FIG. 3. Even a slight displacement of this type will suffice to interrupt the circuit via the switch 17. This not only makes it possible to safely clean the shredding unit SU.
  • a stationary base section having a circumferential outline; a housing section mounted on said base section and having an interior compartment adapted to store shredded matter and having an upper inlet constituting an entrance to said compartment; an upper cover portion positioned above and mounted on said housing section for tilting movement relative to said housing section, a shredding unit positioned in said cover portion above said inlet of said housing section, said cover portion being tiltable with respect to said housing section in a first direction from a closed position in which said cover portion overlies said inlet and in which'the center of gravity of said cover portion is located above said base section but within said circumferential outline thereof to an open position in which said cover portion exposes said inlet, said housing section being tiltable with respect to saicl'stationary base section in a second direction opposite to said first direction; and means for causing said housing section to tilt relative to said base section in said second direction during tilting of said cover portion in said first direction, and for defining a resultant path of movement of said cover
  • said means including at least one arcuate coupling member fast with said cover portion, and roller means on said housing section for guidingly engaging said coupling member during relative movement between said cover portion and said housing section.
  • said means comprising at least one tiltable lever having two articulately connected arms of unequal length, the free end of one of said arms bearing upon said base section, and a coupling rod having spaced terminal portions which are respectively articulately connected with said coupling member and with the free end of the other arm.
  • said housing section having two opposite lateral walls each defining a plane, said housing section being mounted on said base section for pivotable movement relative thereto about a first horizontal pivot axis located in the plane of one of said walls, and said cover portion being mounted on said housing section for pivotable movement relative thereto about a second horizontal pivot axis located in the plane of the other of said walls.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
US3711034D 1969-10-27 1970-10-26 Shredder for documents and the like Expired - Lifetime US3711034A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1954009A DE1954009C3 (de) 1969-10-27 1969-10-27 Gehäuse für einen Aktenvernichter

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US3711034A true US3711034A (en) 1973-01-16

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Application Number Title Priority Date Filing Date
US3711034D Expired - Lifetime US3711034A (en) 1969-10-27 1970-10-26 Shredder for documents and the like

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US (1) US3711034A (de)
DE (1) DE1954009C3 (de)
FR (1) FR2066463A5 (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5375781A (en) * 1993-03-22 1994-12-27 Schwelling; Hermann Paper shredder with bag for collecting comminuted material
US5636801A (en) * 1995-08-02 1997-06-10 Fellowes Mfg. Co. One piece molded stripper for shredders
US5655725A (en) * 1995-08-24 1997-08-12 Fellowes Manufacturing Co. Retaining plate for gearing
US5676321A (en) * 1995-04-03 1997-10-14 Fellowes Mfg. Co. Cutting disk
US5829697A (en) * 1995-08-24 1998-11-03 Fellowes Manufacturing Company Support for cylinders in a paper shredder
US5897065A (en) * 1996-10-09 1999-04-27 Schwelling; Hermann Collecting container for paper shredders of similar comminuting devices
US20040129810A1 (en) * 2003-01-08 2004-07-08 Andrew Kasprowicz Trash compactor with shredder
WO2005096742A2 (en) * 2004-03-30 2005-10-20 Digital Innovations, Llc Paper shredder
US20050253004A1 (en) * 2004-05-12 2005-11-17 Hsieh Kuo-Chin Pedal-operated trashcan type paper shredder
GB2414942A (en) * 2004-06-08 2005-12-14 Kuo-Chin Hsieh Pedal-operated trash can type paper shredder
US20060091247A1 (en) * 2004-11-02 2006-05-04 Fellowes, Inc. Shredder with separate waste opening
US20080156915A1 (en) * 2006-12-27 2008-07-03 Michilin Prosperity Co., Ltd. Structure of shredder trash bin
US20090001203A1 (en) * 2007-06-29 2009-01-01 Acco Uk Limited Shredding machine
US20090302142A1 (en) * 2008-06-04 2009-12-10 Charles Sued Shredder and/or shredder head with pivotable top panel
CN101172265B (zh) * 2007-09-21 2010-09-01 东莞市邦泽电子有限公司 一种机头翻转打开的碎纸机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2817740C2 (de) * 1978-04-22 1985-07-25 Hermann 7777 Salem Schwelling Vorrichtung zum Zerkleinern und Sammeln von Papierabfällen
DE3706623A1 (de) * 1987-03-02 1988-09-15 Hermann Schwelling Verfahren zur selbsttaetigen antriebsabschaltung des schneidwerks eines aktenvernichters bei gefuelltem abfallsammelsack und vorrichtung zur verfahrensdurchfuehrung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US805047A (en) * 1904-12-05 1905-11-21 Stanton Cozatt Bin.
US929960A (en) * 1909-02-02 1909-08-03 Abbot Augustus Low Waste-paper receptacle.
US1011513A (en) * 1911-05-26 1911-12-12 Heinrich Spuehl Apparatus for facilitating the removal of the contents of boxes.
US2658646A (en) * 1949-06-18 1953-11-10 Herman A Hinrichs Holder for tube dispensers having automatically operable closures
US2904268A (en) * 1956-08-06 1959-09-15 John C Hockery Ice crusher
US3313493A (en) * 1964-01-09 1967-04-11 Rival Mfg Company Electric ice crusher

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US805047A (en) * 1904-12-05 1905-11-21 Stanton Cozatt Bin.
US929960A (en) * 1909-02-02 1909-08-03 Abbot Augustus Low Waste-paper receptacle.
US1011513A (en) * 1911-05-26 1911-12-12 Heinrich Spuehl Apparatus for facilitating the removal of the contents of boxes.
US2658646A (en) * 1949-06-18 1953-11-10 Herman A Hinrichs Holder for tube dispensers having automatically operable closures
US2904268A (en) * 1956-08-06 1959-09-15 John C Hockery Ice crusher
US3313493A (en) * 1964-01-09 1967-04-11 Rival Mfg Company Electric ice crusher

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5375781A (en) * 1993-03-22 1994-12-27 Schwelling; Hermann Paper shredder with bag for collecting comminuted material
US5676321A (en) * 1995-04-03 1997-10-14 Fellowes Mfg. Co. Cutting disk
US5636801A (en) * 1995-08-02 1997-06-10 Fellowes Mfg. Co. One piece molded stripper for shredders
US5655725A (en) * 1995-08-24 1997-08-12 Fellowes Manufacturing Co. Retaining plate for gearing
US5829697A (en) * 1995-08-24 1998-11-03 Fellowes Manufacturing Company Support for cylinders in a paper shredder
US5897065A (en) * 1996-10-09 1999-04-27 Schwelling; Hermann Collecting container for paper shredders of similar comminuting devices
US20040129810A1 (en) * 2003-01-08 2004-07-08 Andrew Kasprowicz Trash compactor with shredder
WO2005096742A3 (en) * 2004-03-30 2007-04-05 Digital Innovations Llc Paper shredder
WO2005096742A2 (en) * 2004-03-30 2005-10-20 Digital Innovations, Llc Paper shredder
US20050253004A1 (en) * 2004-05-12 2005-11-17 Hsieh Kuo-Chin Pedal-operated trashcan type paper shredder
GB2414942A (en) * 2004-06-08 2005-12-14 Kuo-Chin Hsieh Pedal-operated trash can type paper shredder
US20060091247A1 (en) * 2004-11-02 2006-05-04 Fellowes, Inc. Shredder with separate waste opening
US7195185B2 (en) 2004-11-02 2007-03-27 Fellowes, Inc. Shredder with separate waste opening
US20080156915A1 (en) * 2006-12-27 2008-07-03 Michilin Prosperity Co., Ltd. Structure of shredder trash bin
US7584920B2 (en) * 2006-12-27 2009-09-08 Michilin Prosperity Co., Ltd. Structure of shredder trash bin
US20090001203A1 (en) * 2007-06-29 2009-01-01 Acco Uk Limited Shredding machine
US7922110B2 (en) * 2007-06-29 2011-04-12 Acco Uk Limited Shredding machine
CN101172265B (zh) * 2007-09-21 2010-09-01 东莞市邦泽电子有限公司 一种机头翻转打开的碎纸机
US20090302142A1 (en) * 2008-06-04 2009-12-10 Charles Sued Shredder and/or shredder head with pivotable top panel
US8070082B2 (en) * 2008-06-04 2011-12-06 Charles Sued Shredder and/or shredder head with pivotable top panel

Also Published As

Publication number Publication date
FR2066463A5 (de) 1971-08-06
DE1954009B2 (de) 1979-01-11
DE1954009A1 (de) 1971-04-29
DE1954009C3 (de) 1979-09-06

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