US2770023A - Press fastener - Google Patents

Press fastener Download PDF

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Publication number
US2770023A
US2770023A US448315A US44831554A US2770023A US 2770023 A US2770023 A US 2770023A US 448315 A US448315 A US 448315A US 44831554 A US44831554 A US 44831554A US 2770023 A US2770023 A US 2770023A
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US
United States
Prior art keywords
fastener
cut
cuts
prongs
sheet
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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US448315A
Inventor
Michalsky Peter
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Individual
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Individual
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Publication date
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Priority to US448315A priority Critical patent/US2770023A/en
Application granted granted Critical
Publication of US2770023A publication Critical patent/US2770023A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42F—SHEETS TEMPORARILY ATTACHED TOGETHER; FILING APPLIANCES; FILE CARDS; INDEXING
    • B42F3/00—Sheets temporarily attached together involving perforations; Means therefor; Sheet details therefor
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S24/00—Buckles, buttons, clasps
    • Y10S24/901—Penetrating-type paper fastener
    • 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.
    • Y10T24/49—Fastener destructively secured by reshaping distortion force [e.g., ductile fastener]
    • Y10T24/492—Distorted structure having shape facilitating impaling
    • Y10T24/493—Distorted structure having shape facilitating impaling and distinct fastener structure cooperating with impaled structure
    • Y10T24/495—Detached cooperating structure
    • 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.
    • Y10T24/49—Fastener destructively secured by reshaping distortion force [e.g., ductile fastener]
    • Y10T24/492—Distorted structure having shape facilitating impaling
    • Y10T24/497—Distorted structure having shape facilitating impaling including plural impaling elements

Definitions

  • An object of this invention is the provision of a simple economical paper fastener formed from a single piece of sheet material with prongs to penetrate and fasten through a paper or papers to be secured together, or to a backing.
  • a feature of this invention is the shearing out of prong members with a central cut through a sheet of material to spaced points well within the edge of the sheet leaving limited margins.
  • Two other shear cuts are provided parallel to the center cut on opposite sides of the outer end and equally spaced in from the edge ending in rounded cross cuts to clear two prong members. These outer cuts terminate somewhat past the center so that when the included prongs are bent out from their connection to the sheet a square central aperture is left through the sheet.
  • a further feature is the use of two such fasteners in opposition to one another with prongs passing in opposite directions through an intervening stack such as sheets of paper and defining a space through which may pass another fastener such as a rivet or bolt.
  • Fig. 1 shows the blank sheet sheared ready for the step of bending out two prongs; and Fig. 2 shows how two of these fast ne p rate to bind articles together.
  • the fastener 3 is formed from an original blank designated as 5.
  • a shearing operation or punching step forms a transverse cut 6 centrally of the blank extending to adjacent the margin of the blank.
  • the same stamping or shearing operation can place two shorter cuts 8 and 9 parallel to the center cut and spaced therefrom a distance equal to the desired final prong width.
  • the outer adjacent ends of these cuts are joined respectively, but cuts 11 and 12, each cut being substantially parallel to the adjacent outer marginal edge of the blank, rounded or as desired.
  • This punching or stamping operation outlines two prongs 15 and 16 of desired length and width.
  • prongs when bent perpendicular to the plane of the original blank, form a central rectangular aperture 17 through which may be passed the prongs of an identical fastener 3 to secure intervening material or papers from opposite sides.
  • a paper fastener or the like formed of bendable sheet material with a central shear cut stopping a predetermined distance short of the outer edges of the material and with side cuts parallel to the center cut on opposite sides of the center cut, one extending from said distance within the edge of the material to a point Well beyond the center of the sheet and the other extending from said distance within an opposite edge to a point beyond said center and a cut adjacent each of said opposite edges connecting the ends of the shear cuts adjacent each edge of the material to define oppositely extending prong outlines.

Landscapes

  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)

Description

Nov. 13, 1956 P. MICHALSKY PRESS FASTENER Filed Aug. 6, 1954 I N VENTOR United States Patent PRESS FASTENER Peter Michalsky, Garfield, N. J.
Application August 6, 1954, Serial No. 448,315
1 Claim. (Cl. 24--153) This invention relates to a paper fastener or the like.
An object of this invention is the provision of a simple economical paper fastener formed from a single piece of sheet material with prongs to penetrate and fasten through a paper or papers to be secured together, or to a backing.
A feature of this invention is the shearing out of prong members with a central cut through a sheet of material to spaced points well within the edge of the sheet leaving limited margins. Two other shear cuts are provided parallel to the center cut on opposite sides of the outer end and equally spaced in from the edge ending in rounded cross cuts to clear two prong members. These outer cuts terminate somewhat past the center so that when the included prongs are bent out from their connection to the sheet a square central aperture is left through the sheet.
A further feature is the use of two such fasteners in opposition to one another with prongs passing in opposite directions through an intervening stack such as sheets of paper and defining a space through which may pass another fastener such as a rivet or bolt.
In the drawings Fig. 1 shows the blank sheet sheared ready for the step of bending out two prongs; and Fig. 2 shows how two of these fast ne p rate to bind articles together.
The fastener 3 is formed from an original blank designated as 5. A shearing operation or punching step forms a transverse cut 6 centrally of the blank extending to adjacent the margin of the blank. The same stamping or shearing operation can place two shorter cuts 8 and 9 parallel to the center cut and spaced therefrom a distance equal to the desired final prong width. The outer adjacent ends of these cuts are joined respectively, but cuts 11 and 12, each cut being substantially parallel to the adjacent outer marginal edge of the blank, rounded or as desired. This punching or stamping operation outlines two prongs 15 and 16 of desired length and width.
These prongs, when bent perpendicular to the plane of the original blank, form a central rectangular aperture 17 through which may be passed the prongs of an identical fastener 3 to secure intervening material or papers from opposite sides.
I claim:
A paper fastener or the like formed of bendable sheet material with a central shear cut stopping a predetermined distance short of the outer edges of the material and with side cuts parallel to the center cut on opposite sides of the center cut, one extending from said distance within the edge of the material to a point Well beyond the center of the sheet and the other extending from said distance within an opposite edge to a point beyond said center and a cut adjacent each of said opposite edges connecting the ends of the shear cuts adjacent each edge of the material to define oppositely extending prong outlines.
References Cited in the file of this patent UNITED STATES PATENTS 590,325 Leslie Sept. 21, 1897 753,976 Goss Mar. 8, 1904 1,055,280 Klann Mar. 4, 1913 1,154,566 Exline Sept. 21, 1915 2,536,792 Wendt Jan. 2, 1951
US448315A 1954-08-06 1954-08-06 Press fastener Expired - Lifetime US2770023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US448315A US2770023A (en) 1954-08-06 1954-08-06 Press fastener

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US448315A US2770023A (en) 1954-08-06 1954-08-06 Press fastener

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US2770023A true US2770023A (en) 1956-11-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
US448315A Expired - Lifetime US2770023A (en) 1954-08-06 1954-08-06 Press fastener

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5222280A (en) * 1988-02-20 1993-06-29 Winkler & Dunnebier Maschinenfabrik Und Eisengiesserei Kg Metal clip for closing mailing envelopes and the like

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US590325A (en) * 1897-09-21 Frank w
US753976A (en) * 1902-05-05 1904-03-08 William C Goss Book-leaf fastener.
US1055280A (en) * 1910-05-13 1913-03-04 Erwin O Klann Paper-fastener.
US1154566A (en) * 1913-08-27 1915-09-21 William G Exline Pocket check-binder.
US2536792A (en) * 1948-12-11 1951-01-02 Robert H Wendt Paper fastener

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US590325A (en) * 1897-09-21 Frank w
US753976A (en) * 1902-05-05 1904-03-08 William C Goss Book-leaf fastener.
US1055280A (en) * 1910-05-13 1913-03-04 Erwin O Klann Paper-fastener.
US1154566A (en) * 1913-08-27 1915-09-21 William G Exline Pocket check-binder.
US2536792A (en) * 1948-12-11 1951-01-02 Robert H Wendt Paper fastener

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5222280A (en) * 1988-02-20 1993-06-29 Winkler & Dunnebier Maschinenfabrik Und Eisengiesserei Kg Metal clip for closing mailing envelopes and the like

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