US3898717A - Releasable paper clip - Google Patents

Releasable paper clip Download PDF

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Publication number
US3898717A
US3898717A US404608A US40460873A US3898717A US 3898717 A US3898717 A US 3898717A US 404608 A US404608 A US 404608A US 40460873 A US40460873 A US 40460873A US 3898717 A US3898717 A US 3898717A
Authority
US
United States
Prior art keywords
clip
paper
strip
arched strip
slit
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
Application number
US404608A
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English (en)
Inventor
Hermann Schwartz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3898717A publication Critical patent/US3898717A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/20—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening
    • F16B2/205—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening with two stable positions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42F—SHEETS TEMPORARILY ATTACHED TOGETHER; FILING APPLIANCES; FILE CARDS; INDEXING
    • B42F1/00—Sheets temporarily attached together without perforating; Means therefor
    • B42F1/02—Paper-clips or like fasteners
    • B42F1/04—Paper-clips or like fasteners metallic
    • B42F1/06—Paper-clips or like fasteners metallic of flat cross-section, e.g. made of a piece of metal sheet
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/44—Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44641—Clasp, clip, support-clamp, or required component thereof having gripping member formed from, biased by, or mounted on resilient member
    • Y10T24/44769—Opposed engaging faces on gripping member formed from single piece of resilient material
    • Y10T24/44906—Opposed engaging faces on gripping member formed from single piece of resilient material having specific surface irregularity on or along engaging face

Definitions

  • a paper clip is made of sheet metal folded over in a [30] Foreign Application Priority Data U-shaped profile to provide parallel clip faces and one Oct. 10, 1972 Switzerland 14767/72 of the Clip faces has at least one Slit bordering a Strip of the sheet metal which is bowed out, so as to form a 521 US. Cl. 24/259; 132/46 bistable Spring Portion The p g strip is bowed out 51 Int. c1.
  • This invention relates to a releasable paper clip for releasably holding a number of stacked paper sheets.
  • stapling in which a wire staple is driven through the paper by a stapling tool and bent over on the bottom of the stack.
  • the staple must to some extent be unbent, at some trouble, preferably with the help of an unstapling tool and if after removing one or a few papers the rest must be kept together, another staple must be driven through the remaining papers and bent over.
  • the paper is damaged by stapling, particularly when repeated, which in particular is embarrassingly noticeable in the case of thin papers, such as carbon copies, airmail paper and the like. Stapling is on this account of only limited use.
  • the legs open up and form an acute angle with the aforesaid fulcrum as its vertex. Since a stack of documents generally presents a right-angled profile at its edge, the actual spring force of the paper clip will be applied only to the outer edge of the documents, which results in a poor hold on the documents.
  • the legs of the clip must open wider, the spring force indeed increases, but the angle of opening likewise increases, so that the clamping effect of the clip generally becomes still worse. In the case of solid or smooth materials, the common paper clip then jumps off with the slightest movement.
  • a deficiency with which practically all known types of clips are afflicted is that a spring force is effective as soon as a document begins to be inserted, which must be overcome by the advancing paper. With thin paper, this can be done only with some difficulty and the paper is often damaged thereby, at least to the extent of showing traces of handling. Where papers must be passed from persons who prepare them, then to one or more who must approve them before signing and finally for signature, it defeats much of the purpose of the care to prepare neat documents if outgoing correspondence bears traces of extensive handling. Furthermore, when one sheet is pulled out of a stack held together with a common paper clip, other sheets generally come out with the desired sheet or are damaged by the operation.
  • a piece of stiff resilient sheet material preferably medium hardness steel, is bent or folded over into a substantially U-shaped profile, the flat portions corresponding to the legs of the U providing upper and lower clip faces for the paper that may be inserted therein.
  • the portion of the piece of sheet metal which is to form one of the clip faces is provided with at least one slit substantially parallel to the intended fold, and a strip of metal so defined is stretched and bowed by compressive brce out of the plane of the sheet metal piece, while continuing to be joined to the remainder of the sheet metal piece by edge portions beyond the end of the slit or slits, thus constituting a bistable spring portion of the clip.
  • the clip is applied to the paper with the spring portion arched away from the paper, so that the paper slips in easily. Then finger pressure on the arched spring portion will cause it to snap into its other stable position in which it is bowed towards the paper and holds the paper against the opposite clip face. To remove the clip, finger pressure is applied to the edge portions at the end of the bowed spring. As soon as the clip face bearing the spring portion is pushed down against the paper so as to bring the spring portion into the same plane as the clip face, the spring portion snaps up so that it is bowed away from the paper, leaving the paper quite loose in the clip, so that the clip can be removed without friction.
  • the spring portion can be defined by two slits instead of by one slit and the edge of the metal piece, and more than one spring portion may be provided if desired.
  • the clip of the present invention By applying the clip of the present invention parallel to the edge of the paper stack, the various individual sheets can be bound more or less like a brochure without interference with their use.
  • the clip of the present invention By applying the clip of the present invention at the side of the papers, it is easy to keep all the sheets with their edges parallel.
  • the clip provides a clipping force applying substantially parallel clipping faces directly towards each other against the stack of papers, so that the clip has a firm position and has no tendency to slide off.
  • the clip is preferably made of a single piece of sheet metal, preferably medium hard steel, which can be done in a single sequence of operations.
  • the spring strip can be stretched by compressive force in one of these operations, thereby putting its unstable position (where it snaps one way or the other) approximately in the plane of the clip face.
  • FIG. 1 is a perspective view of a clip according to the invention.
  • FIG. 2 is an unfolded plan view, on a smaller scale, of the clip shown in FIG. 1.
  • the clip shown in the drawing is a bent-over piece of stiff resilient material, preferably sheet steel of medium hardness which is bent over in a U-shaped, or approximately U-shaped profile.
  • a fold l the bottom of the U, an upper clip face 2 and a lower clip face 3 which is parallel to the upper clip face 2.
  • a slit 4 is provided in the upper clip face 2 parallel to the fold l. Bounded by the slit 4 is a strip 5 bowed out of the plane of the upper clip face 2, here shown upwardly arched.
  • the strip 5 is connected at its ends with the edge zones 2 and 2 at the sides of the clip face.
  • the developed or unfolded view of FIG. 2 shows the shape of the single piece of metal from which the clip can be made.
  • the thickness of the sheet metal is preferably about 0.3 mm.
  • this piece of sheet metal can be stamped out, and the previously mentioned slit 4 can also be formed, which preferably has a width of from 1 to 2 mm, with the strip 5 having a width of about 4 to 5 mm.
  • the strip 5 is compressed, stretching it slightly by spreading the material. Since the edge zones 2 and 2" remain fixed in position during this operation, the strip 5 is forced to bow out and does so along a roughly halfelliptical arch as shown in FIG. 1.
  • the bistable spring strips preferably is bowed out of the plane of the clip face to about 3 mm at the vertex of the arch. Thereafter, the sheet metal is bent on the lines 1 and 1 so as to form the clip shown in FIG. 1.
  • the clip face 3 is made somewhat longer than the clip face 2, in order to facilitate the insertion of sheets of paper.
  • this lower clip face 3 could also be of a size suitable to provide a complete support surface for a sheet of paper, which would enable the clip structure to serve at the same time as a writing support, thus providing a one piece clip board.
  • This structure provides the possibility of producing scratch paper pads in a simple fashion.
  • the clip of the present invention is preferably produced with corners clipped or rounded off, and the edges may also be rounded off if desired. It is also possible to provide the fold l by a gradual bend to give a rounded U profile, rather than a square profile such as provided by the bends l and 1". By the provision of additional slits two or more spring strips may be provided, or one strip may be bounded by two slits.
  • the paper clip of the present invention above described is simple and cheap to manufacture, as well as simple and secure in its handling and use.
  • a releasable paper clip comprising a piece of stiff resilient sheet material bent or folded over in substantially U-shaped profile, the legs of the U being not necessarily of the same length and providing an upper and lower guide faces for a paper sheet or stack that may be inserted into the clip,
  • one of said guide faces (2) having at least one slit (4) substantially parallel to the fold (the bottom of the U) (1), said slit(s) together with the edge portions (2', 2") of said guide face beyond the end(s) of said slit(s) forming boundaries of an arched strip (5) of said sheet material bowed out of the plane of said guide face and connecting with said edge portions in said plane at its ends, said arched strip constituting a bistable spring element in one stable position of which the arched strip (5) applies pressure against the opposite guide face (3) and in the other position of which the arched strip (5) is wholly outside the space between said guide faces (2, 3).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheet Holders (AREA)
US404608A 1972-10-10 1973-10-09 Releasable paper clip Expired - Lifetime US3898717A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1476772A CH543400A (de) 1972-10-10 1972-10-10 Klemmvorrichtung für Büropapiere

Publications (1)

Publication Number Publication Date
US3898717A true US3898717A (en) 1975-08-12

Family

ID=4403671

Family Applications (1)

Application Number Title Priority Date Filing Date
US404608A Expired - Lifetime US3898717A (en) 1972-10-10 1973-10-09 Releasable paper clip

Country Status (6)

Country Link
US (1) US3898717A (enExample)
CH (1) CH543400A (enExample)
DE (1) DE2255253C2 (enExample)
FR (1) FR2202477A5 (enExample)
GB (1) GB1403162A (enExample)
IT (1) IT995724B (enExample)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD244673S (en) * 1975-10-23 1977-06-14 Dover Findings, Inc. Jewelry clasp member
USD294006S (en) 1985-04-29 1988-02-02 Abbott Laboratories Clamping device for holding flexible feeding pouch
US4793030A (en) * 1982-06-09 1988-12-27 Hermann Hirsch Leder- Und Kunststoffwarenfabrik Single-or multilayer strap of flexible material
USD334411S (en) 1991-08-01 1993-03-30 Lec Kabushiki Kaisha Spring clip
US5417602A (en) * 1994-01-25 1995-05-23 Mcgraw; James E. Flying device having staggered parallel airfoils
US5626432A (en) * 1996-02-13 1997-05-06 Swift; Daniel P. Adjustable locking binder
USD448411S1 (en) 2001-01-25 2001-09-25 Larry Kenneth Legg Paper clip
US20030074052A1 (en) * 1997-01-24 2003-04-17 Jomed Gmbh Bistable spring construction for a stent and other medical apparatus
US20050005406A1 (en) * 2003-07-08 2005-01-13 Kaim John T. Device for securing papers, sheets of material, cloth, ect.
EP1533135A1 (de) * 2003-11-18 2005-05-25 Take2-Designagentur GmbH & Co. KG Bistabile Befestigungsvorrichtung
US20060107495A1 (en) * 2004-07-08 2006-05-25 Kaim John T Device for securing sheets of paper, material, cloth, etc.
US20060144317A1 (en) * 2004-12-31 2006-07-06 Chan Chi W Linemark the last line you read
US20080072403A1 (en) * 2004-07-02 2008-03-27 Innoverce Englineering Ltd. Clip
US20120048291A1 (en) * 2010-08-31 2012-03-01 Goody Products, Inc. Resilient Claw Hair Clip
US8230913B2 (en) 2001-01-16 2012-07-31 Halliburton Energy Services, Inc. Expandable device for use in a well bore
US8353948B2 (en) 1997-01-24 2013-01-15 Celonova Stent, Inc. Fracture-resistant helical stent incorporating bistable cells and methods of use
US8656521B2 (en) 2010-07-12 2014-02-25 Jb Creations Llc Goggle lens cover
US8663311B2 (en) 1997-01-24 2014-03-04 Celonova Stent, Inc. Device comprising biodegradable bistable or multistable cells and methods of use
USRE45011E1 (en) 2000-10-20 2014-07-15 Halliburton Energy Services, Inc. Expandable tubing and method

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194430A (en) * 1986-06-04 1988-03-09 Victor Arnold Martin Green Holder for articles
JP2500403B2 (ja) * 1991-08-07 1996-05-29 レック株式会社 バネクリップ
GB2273734B (en) * 1992-12-23 1996-04-03 Draftex Ind Ltd Improvements in and relating to sealing,trimming and finishing strips
JPH1052993A (ja) * 1996-08-12 1998-02-24 Buhei Akaha 画板等における用紙固定機構
DE20217053U1 (de) 2002-11-05 2003-02-20 Roling, Markus, Dipl.-Ing. (FH), 83022 Rosenheim Clip zur Aufnahme und Befestigung von Bögen, insbesondere Papierbögen
FR3154090A1 (fr) 2023-10-12 2025-04-18 Bontaz Centre Groupe motopropulseur a transmission continument variable et a reducteur epicycloidal et cycloidal
FR3163636A1 (fr) 2024-06-21 2025-12-26 Bontaz Centre Groupe motopropulseur a transmission continument variable et a reducteur epicycloidal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1851013A (en) * 1928-12-13 1932-03-29 Ogilvie Bill clip
US3082773A (en) * 1961-09-21 1963-03-26 Tip Top Products Company Hair clip
US3416202A (en) * 1966-07-24 1968-12-17 Sasaoka Takenori Resilient plate clip

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1851013A (en) * 1928-12-13 1932-03-29 Ogilvie Bill clip
US3082773A (en) * 1961-09-21 1963-03-26 Tip Top Products Company Hair clip
US3416202A (en) * 1966-07-24 1968-12-17 Sasaoka Takenori Resilient plate clip

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD244673S (en) * 1975-10-23 1977-06-14 Dover Findings, Inc. Jewelry clasp member
US4793030A (en) * 1982-06-09 1988-12-27 Hermann Hirsch Leder- Und Kunststoffwarenfabrik Single-or multilayer strap of flexible material
USD294006S (en) 1985-04-29 1988-02-02 Abbott Laboratories Clamping device for holding flexible feeding pouch
USD334411S (en) 1991-08-01 1993-03-30 Lec Kabushiki Kaisha Spring clip
US5417602A (en) * 1994-01-25 1995-05-23 Mcgraw; James E. Flying device having staggered parallel airfoils
US5522753A (en) * 1994-01-25 1996-06-04 Mcgraw; James E. Flying device having staggered parallel airfoils
US5626432A (en) * 1996-02-13 1997-05-06 Swift; Daniel P. Adjustable locking binder
US7758628B2 (en) 1997-01-24 2010-07-20 Nexeon Medsystems, Inc. Expandable device having bistable spring construction
US7828836B2 (en) 1997-01-24 2010-11-09 Nexeon Medsystems Inc. Bistable spring construction for a stent and other medical apparatus
US20040193247A1 (en) * 1997-01-24 2004-09-30 Besselink Petrus A. Expandable device having bistable spring construction
US8353948B2 (en) 1997-01-24 2013-01-15 Celonova Stent, Inc. Fracture-resistant helical stent incorporating bistable cells and methods of use
US20030074052A1 (en) * 1997-01-24 2003-04-17 Jomed Gmbh Bistable spring construction for a stent and other medical apparatus
US9241782B2 (en) 1997-01-24 2016-01-26 Celonova Stent, Inc. Bistable spring construction for a stent and other medical apparatus
US8663311B2 (en) 1997-01-24 2014-03-04 Celonova Stent, Inc. Device comprising biodegradable bistable or multistable cells and methods of use
USRE45011E1 (en) 2000-10-20 2014-07-15 Halliburton Energy Services, Inc. Expandable tubing and method
USRE45244E1 (en) 2000-10-20 2014-11-18 Halliburton Energy Services, Inc. Expandable tubing and method
USRE45099E1 (en) 2000-10-20 2014-09-02 Halliburton Energy Services, Inc. Expandable tubing and method
US8230913B2 (en) 2001-01-16 2012-07-31 Halliburton Energy Services, Inc. Expandable device for use in a well bore
USD448411S1 (en) 2001-01-25 2001-09-25 Larry Kenneth Legg Paper clip
WO2005007420A3 (en) * 2003-07-08 2005-03-24 John T Kaim Device for securing papers, sheets of material, cloth, etc.
US6848150B1 (en) 2003-07-08 2005-02-01 John T. Kaim Device for securing papers, sheets of material, cloth, etc
US20050005406A1 (en) * 2003-07-08 2005-01-13 Kaim John T. Device for securing papers, sheets of material, cloth, ect.
EP1533135A1 (de) * 2003-11-18 2005-05-25 Take2-Designagentur GmbH & Co. KG Bistabile Befestigungsvorrichtung
US7937813B2 (en) 2004-07-02 2011-05-10 Innoverce Engineering Ltd. Clip
US20080072403A1 (en) * 2004-07-02 2008-03-27 Innoverce Englineering Ltd. Clip
US20060107495A1 (en) * 2004-07-08 2006-05-25 Kaim John T Device for securing sheets of paper, material, cloth, etc.
US7146687B2 (en) 2004-07-08 2006-12-12 Kaim John T Device for securing sheets of paper, material, cloth, etc.
US20060144317A1 (en) * 2004-12-31 2006-07-06 Chan Chi W Linemark the last line you read
US8656521B2 (en) 2010-07-12 2014-02-25 Jb Creations Llc Goggle lens cover
US8528573B2 (en) * 2010-08-31 2013-09-10 Goody Products Inc. Resilient claw hair clip
US20120048291A1 (en) * 2010-08-31 2012-03-01 Goody Products, Inc. Resilient Claw Hair Clip

Also Published As

Publication number Publication date
CH543400A (de) 1973-10-31
DE2255253C2 (de) 1975-02-13
FR2202477A5 (enExample) 1974-05-03
DE2255253A1 (de) 1974-04-25
IT995724B (it) 1975-11-20
DE2255253B1 (de) 1974-06-27
GB1403162A (en) 1975-08-13

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