US2974378A - Metal fastener - Google Patents

Metal fastener Download PDF

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Publication number
US2974378A
US2974378A US632349A US63234957A US2974378A US 2974378 A US2974378 A US 2974378A US 632349 A US632349 A US 632349A US 63234957 A US63234957 A US 63234957A US 2974378 A US2974378 A US 2974378A
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Prior art keywords
prongs
sheet
strip
lines
openings
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Expired - Lifetime
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US632349A
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Lidsky Julius
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RONEL CORP
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RONEL CORP
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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
    • F16B15/00—Nails; Staples
    • F16B15/0023—Nail plates
    • F16B15/003—Nail plates with teeth cut out from the material of the plate
    • F16B15/0046—Nail plates with teeth cut out from the material of the plate from the body of the plate
    • 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
    • Y10S100/00—Presses
    • Y10S100/913—Truss presses
    • 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
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/921—Multiple-pronged nail, spike or tack
    • 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
    • Y10S52/00—Static structures, e.g. buildings
    • Y10S52/06—Toothed connecting means

Definitions

  • the present invention relates to metal fasteners and more particularly to metal fasteners of the type in which a plurality of prongs surround an opening in a sheet, strip or plate and project therefrom in a direction at right angles to the same.
  • These prongs are integral with the sheet, strip or plate from which they project and are normally formed by slitting the sheet andbending the slot portions away from the sheet to form the projecting prongs.
  • the sheet is formed with intersecting slits and openings are severed in the sheet at the opposite ends of the slits.
  • the sheet is then bent about a straight or preferably a curved line joining the said openings to thereby produce, surrounding a large opening in the sheet, a plurality of spaced apart prongs which are barbed or arrow-shaped and which possess as a result of this barbed configuration, an en- 2,974,378 Patented Mar. 14, 1961 openings 14.
  • These openings 14 are spaced apart from hanced ability to remain firmly embedded in a wood or other base into which the pronged strip is driven.
  • each individual sheet, strip or plate may have one or a plurality of large openings with prongs projecting therearound and these prongs project at approximately right angles from the sheet at one side of the sheet or from both sides of the sheet.
  • each prong is formed with an arcuate cross-section throughout its length to provide enhanced dimensional stability to the prongs and to thereby increase the resistance of the prong to buckling when the prong is driven into a base.
  • Fig. 1 is a plan view of a sheet, strip or plate indicating diagrammatically the slits and openings which are to be cut therethrough in accordance with the invention
  • Fig. 2 is a perspective view showing the sheet, strip or plate of Fig. l'afterslitting and cutting thereof;
  • Fig. 3 is a perspective view showing the completed product which is formed when the product of Fig. 2 has the prong portions thereof bent out of the plane of the sheet along curved lines interconnecting the small openings shown in Fig. 2; 1
  • Fig. 4 is a top plan view, similar to Fig. '1 and showing a modified design in accordance with the invention for the purpose of illustrating the scope of the invention; and Fig. 5 is a perspective view formed from the blank of Fig. 4 after slitting, cutting and bending.
  • a metal strip 10 which may contain space for the production of one or several fastening areas in which prongs project from the strip surrounding a large opening in the strip.
  • slit lines 11 and 12 Shown on the strip 10 are slit lines 11 and 12 which intersect one another. It will be appreciated that al- 7 though only two slit lines are shown in the form of the invention which is illustrated, that more than two intersecting slit lines could be employed.
  • lines 13 which are cut lines which circumscribe one another and from the intersection of the slit lines 11 and 12, said intersection being here identified by the numeral 15'.
  • the strip is shown after slitting on the lines 11 and 12 and after cutting on the lines 14.
  • the opening 14 can be seen with particular clarity.
  • dotted lines 16 which arcuately interconnect the openings 14.
  • the dotted lines 16 are bend lines and in the form of the invention illustrated in Figs. 1-3, the bend lines 16 define a circle. This is preferred practice of the invention and the bend need not be arcuate since it.could Well be straight and, if arcuate, the combined arcs need not form a circle but could form any closed pattern whether regular, as an ellipse, or not; I
  • the slits 11 and 12 and the cuts 13 can be made in any order. It is preferred, for practical purposes, to simultaneously form the slits 11. and 12 and the cuts 13. It is stressed that the sequence of operations forms no part of the invention.
  • each fastening area 17 is constituted by spaced apart prongs 18 which surround and partially define large openings 19 in the strip 10.
  • prongs 18 possesses a pointed forward portion '20 and a narrowed intermediate portion 21 which define between them a barbed portion 22.
  • the bending operation which transforms the slit and cut product or blank of Fig. 2 into the finished metal fastener of Fig. 3 can be simply effected by passing a cylindrical tool through the strip 10.
  • the strip 10 is supported on a die having a circular opening for receiving the cylindrical forming or bending tool so that a sharp and Well defined bend line 16 will be formed.
  • the prongs 18 shown in Fig. 3 are arcuate in cross-section. This provides increased resistance to buckling of the prongs 18 when the fastener is used.
  • the arcuate cross-section of the prongs 18 is uniform throughout the length thereof.
  • the production of this uniformity of arcuateness over the length of the prongs is readily attained by forcing the cylindrical forming tool into a cylindrical recess large enough to just receive the forming tool and the prongs.
  • cylindrical forming tool and the die having a cylindrical recess are not shown in the drawing since the intended structure is conventional and does not per se form any part of the invention.
  • FIGs. 4 and 5 are simply illustrative of various modifications in design which are included within the scope of the invention.
  • the latter figures use the same identifying numerals with a prime to distinguish specific variations.
  • the size and shape of the openings 14, the length of the slit lines 11 and 12, the shape and disposition of the bend lines 16 can all be varied considerably.
  • the shape of the barbs 22 is also subject to wide variation. It will be appreciated that the metal fasteners of the invention are capable of widely divergent uses and the use to which the fastener is intended to be adapted will determine the thickness of the metal strip 10 and its shape, the number of fastening areas 17 and the direction of the prongs 18.
  • a fastening plate for wooden truss structures, comprising a metal sheet, strip or plate having plural spaced fastening areas formed therein nad each including a plurality of prongs integral with said sheet and projecting substantially perpendicularly from a surface thereof, the prongs of each fastening area being uniformly positioned around the circumference of a circle embracing an opening in the sheet; at least a portion of the periphery of said opening being coincident with a corresponding portion of the circumference of said circle; the bases of the prongs forming parts of the circumference of said circle;
  • each of said prongs haw'ng a pointed extremity formed 2 by diverging outer edges terminating at relatively sharp barb-forming junctions with relatively inwardly converging portions of side edges of a narrower intermediate section, the side edges including portions merging smoothly with the circumference of said circle; said prongs having a transversely arcuate cross-section.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Adornments (AREA)

Description

March 14, 1961 LlDSKY 2,974,378
METAL FASTENER Filed Jan. 3, 1957 INVENTOIQ.
Jlklma Lids? BY .A, fl W/ A TTORNE Y METAL FASTENER .liiliiis Lidsky, Beach, Fla., assignor to Ronel Corporation, a corporation of Florida Filed Jan. 3, i953, Ser. No. 632,349
The present invention relates to metal fasteners and more particularly to metal fasteners of the type in which a plurality of prongs surround an opening in a sheet, strip or plate and project therefrom in a direction at right angles to the same. These prongs are integral with the sheet, strip or plate from which they project and are normally formed by slitting the sheet andbending the slot portions away from the sheet to form the projecting prongs.
In accordance with the present invention, the sheet is formed with intersecting slits and openings are severed in the sheet at the opposite ends of the slits. The sheet is then bent about a straight or preferably a curved line joining the said openings to thereby produce, surrounding a large opening in the sheet, a plurality of spaced apart prongs which are barbed or arrow-shaped and which possess as a result of this barbed configuration, an en- 2,974,378 Patented Mar. 14, 1961 openings 14. These openings 14 are spaced apart from hanced ability to remain firmly embedded in a wood or other base into which the pronged strip is driven.
As will be understood, each individual sheet, strip or plate may have one or a plurality of large openings with prongs projecting therearound and these prongs project at approximately right angles from the sheet at one side of the sheet or from both sides of the sheet.
In accordance with preferred practice of the invention, each prong is formed with an arcuate cross-section throughout its length to provide enhanced dimensional stability to the prongs and to thereby increase the resistance of the prong to buckling when the prong is driven into a base.
The invention will now be more fully described in conjunction with the accompanying drawings in which:
Fig. 1 is a plan view of a sheet, strip or plate indicating diagrammatically the slits and openings which are to be cut therethrough in accordance with the invention;
Fig. 2 is a perspective view showing the sheet, strip or plate of Fig. l'afterslitting and cutting thereof;
Fig. 3 is a perspective view showing the completed product which is formed when the product of Fig. 2 has the prong portions thereof bent out of the plane of the sheet along curved lines interconnecting the small openings shown in Fig. 2; 1
Fig. 4 is a top plan view, similar to Fig. '1 and showing a modified design in accordance with the invention for the purpose of illustrating the scope of the invention; and Fig. 5 is a perspective view formed from the blank of Fig. 4 after slitting, cutting and bending.
Referring particularly to Fig. 1, there is shown a metal strip 10 which may contain space for the production of one or several fastening areas in which prongs project from the strip surrounding a large opening in the strip.
Shown on the strip 10 are slit lines 11 and 12 which intersect one another. It will be appreciated that al- 7 though only two slit lines are shown in the form of the invention which is illustrated, that more than two intersecting slit lines could be employed.
At the extremities of each of the slit lines 11 and 12 is shown lines 13 which are cut lines which circumscribe one another and from the intersection of the slit lines 11 and 12, said intersection being here identified by the numeral 15'.
Referring to Fig. 2, the strip is shown after slitting on the lines 11 and 12 and after cutting on the lines 14. In this figure of the drawing, the opening 14 can be seen with particular clarity.
There is shown in both Figs. 1 and 2 dotted lines 16 which arcuately interconnect the openings 14. The dotted lines 16 are bend lines and in the form of the invention illustrated in Figs. 1-3, the bend lines 16 define a circle. This is preferred practice of the invention and the bend need not be arcuate since it.could Well be straight and, if arcuate, the combined arcs need not form a circle but could form any closed pattern whether regular, as an ellipse, or not; I
It will be appreciated that the slits 11 and 12 and the cuts 13 can be made in any order. It is preferred, for practical purposes, to simultaneously form the slits 11. and 12 and the cuts 13. It is stressed that the sequence of operations forms no part of the invention.
The completed metal fastener, after bending along the lines 16 in Fig. 2 is depicted in Fig. 3 where it can be seen that two fastening areas, indicated generally by the numeral 17, have been formed in the strip 10. It will furtherbeen seen that each fastening area 17 is constituted by spaced apart prongs 18 which surround and partially define large openings 19 in the strip 10. Of greatest importance is the fact that each of the prongs 18 possesses a pointed forward portion '20 and a narrowed intermediate portion 21 which define between them a barbed portion 22.
The bending operation which transforms the slit and cut product or blank of Fig. 2 into the finished metal fastener of Fig. 3 can be simply effected by passing a cylindrical tool through the strip 10. Desirably, the strip 10 is supported on a die having a circular opening for receiving the cylindrical forming or bending tool so that a sharp and Well defined bend line 16 will be formed. It will be particularly seen that the prongs 18 shown in Fig. 3 are arcuate in cross-section. This provides increased resistance to buckling of the prongs 18 when the fastener is used.
The arcuate cross-section of the prongs 18 is uniform throughout the length thereof. The production of this uniformity of arcuateness over the length of the prongs is readily attained by forcing the cylindrical forming tool into a cylindrical recess large enough to just receive the forming tool and the prongs. V
The cylindrical forming tool and the die having a cylindrical recess are not shown in the drawing since the intended structure is conventional and does not per se form any part of the invention.
Figs. 4 and 5 are simply illustrative of various modifications in design which are included within the scope of the invention. For the purpose of simplifying discussion and to clarify the relationship between the form of the invention which is illustrated in Figs. 1-3 and the form shown in Figs. 4 and 5, the latter figures use the same identifying numerals with a prime to distinguish specific variations.
As will be evident from a review of Figs. 4 and 5, the size and shape of the openings 14, the length of the slit lines 11 and 12, the shape and disposition of the bend lines 16 can all be varied considerably. The shape of the barbs 22 is also subject to wide variation. It will be appreciated that the metal fasteners of the invention are capable of widely divergent uses and the use to which the fastener is intended to be adapted will determine the thickness of the metal strip 10 and its shape, the number of fastening areas 17 and the direction of the prongs 18.
The intended use will also dictate which of many posticular utility in the prefabrication of wooden partitions and trusses useful in the construction of homes and similar building structures.
I claim:
A fastening plate, for wooden truss structures, comprising a metal sheet, strip or plate having plural spaced fastening areas formed therein nad each including a plurality of prongs integral with said sheet and projecting substantially perpendicularly from a surface thereof, the prongs of each fastening area being uniformly positioned around the circumference of a circle embracing an opening in the sheet; at least a portion of the periphery of said opening being coincident with a corresponding portion of the circumference of said circle; the bases of the prongs forming parts of the circumference of said circle;
each of said prongs haw'ng a pointed extremity formed 2 by diverging outer edges terminating at relatively sharp barb-forming junctions with relatively inwardly converging portions of side edges of a narrower intermediate section, the side edges including portions merging smoothly with the circumference of said circle; said prongs having a transversely arcuate cross-section.
References Cited in the file of this patent UNITED STATES PATENTS 800,248 Popple Sept. 26, 1905 1,089,878 Steinhauser Mar. 10, 1914 1,297,611 Upson Mar. 18, 1919 1,599,985 Carlson Sept. 14, 1926 1,638,612 Baus Aug. 9, 1927 2,533,786 Gagnier Dec. 12, 1950 2,745,122 Green May 15, 1956 2,827,676 Sanford Mar. 25, 1958 2,844,852 -West July 29, 1958 FOREIGN PATENTS 749,142 France May 2, 1933
US632349A 1957-01-03 1957-01-03 Metal fastener Expired - Lifetime US2974378A (en)

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011226A (en) * 1960-11-23 1961-12-05 Troy Steel Corp Gusset plates
US3090088A (en) * 1962-05-07 1963-05-21 Foley & Lavish Engineering Co Connector device
US3104429A (en) * 1959-09-30 1963-09-24 Sanford Ind Inc Double tooth connector plate
US3212389A (en) * 1963-02-25 1965-10-19 Sanford Ind Inc Reinforced connector plate
DE1225366B (en) * 1962-05-09 1966-09-22 Karl Georg K G Eisenwarengross Claw anchor
US3347126A (en) * 1965-10-04 1967-10-17 Gail H Templin Connector plate for wood trusses
US3667337A (en) * 1970-06-11 1972-06-06 James Stanley Burke Grip plate for wooden truss members
US3703304A (en) * 1971-09-09 1972-11-21 Atlas Eng Products Inc Construction element with anchor teeth
US3981051A (en) * 1970-03-16 1976-09-21 Brumlik George C Bristle-like gripping device
US4679367A (en) * 1985-08-29 1987-07-14 Jack Walters & Sons, Corp. Interconnecting of wooden members
WO2007112987A1 (en) * 2006-03-31 2007-10-11 Reinz-Dichtungs-Gmbh Mounting device and method for producing
US20100247934A1 (en) * 2009-03-25 2010-09-30 Airbus Operations Limited Profile of interfacing projections
DE102010042463A1 (en) * 2010-10-14 2012-04-19 Agm Mader Gmbh Connector for connecting wooden components of wooden support construction during construction of e.g. industrial building, has set of pin elements fastened to support body, where retainer of one element includes projection and/or protrusion
EP2396126A4 (en) * 2009-02-10 2017-03-15 Industrial Origami, Inc. Sheet of material with bend-controlling structures and method
US20200224440A1 (en) * 2019-01-16 2020-07-16 Daniel H. Conklin Drywall repair apparatus and methods
US20200309176A1 (en) * 2017-08-03 2020-10-01 Safran Seats Method for assembling a metal part with a composite part and corresponding assembly of parts

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US800248A (en) * 1904-09-24 1905-09-26 N L Hayden Mfg Company Swab-casing.
US1089878A (en) * 1913-04-09 1914-03-10 Alfred Steinhauser Studding-fastener.
US1297611A (en) * 1918-12-16 1919-03-18 Charles A Upson Fastening device for wall-board, &c.
US1599985A (en) * 1925-12-04 1926-09-14 Emil B Carlson Jamb-supporting stay for door and window frames
US1638612A (en) * 1924-06-14 1927-08-09 Studebaker Corp Shipping device
FR749142A (en) * 1933-01-16 1933-07-18 Lejay Fils Crampon
US2533786A (en) * 1946-04-08 1950-12-12 George E Gagnier Fastening strip
US2745122A (en) * 1951-01-11 1956-05-15 Lee B Green Method of producing ring-shaped articles
US2827676A (en) * 1954-03-05 1958-03-25 Sanford Arthur Carol Grip plate for truss
US2844852A (en) * 1957-08-19 1958-07-29 Paul D West Truss

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US800248A (en) * 1904-09-24 1905-09-26 N L Hayden Mfg Company Swab-casing.
US1089878A (en) * 1913-04-09 1914-03-10 Alfred Steinhauser Studding-fastener.
US1297611A (en) * 1918-12-16 1919-03-18 Charles A Upson Fastening device for wall-board, &c.
US1638612A (en) * 1924-06-14 1927-08-09 Studebaker Corp Shipping device
US1599985A (en) * 1925-12-04 1926-09-14 Emil B Carlson Jamb-supporting stay for door and window frames
FR749142A (en) * 1933-01-16 1933-07-18 Lejay Fils Crampon
US2533786A (en) * 1946-04-08 1950-12-12 George E Gagnier Fastening strip
US2745122A (en) * 1951-01-11 1956-05-15 Lee B Green Method of producing ring-shaped articles
US2827676A (en) * 1954-03-05 1958-03-25 Sanford Arthur Carol Grip plate for truss
US2844852A (en) * 1957-08-19 1958-07-29 Paul D West Truss

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104429A (en) * 1959-09-30 1963-09-24 Sanford Ind Inc Double tooth connector plate
US3011226A (en) * 1960-11-23 1961-12-05 Troy Steel Corp Gusset plates
US3090088A (en) * 1962-05-07 1963-05-21 Foley & Lavish Engineering Co Connector device
DE1291882B (en) * 1962-05-07 1969-04-03 Foley & Lavish Engineering Co Claw plate for connecting wooden rods
DE1225366B (en) * 1962-05-09 1966-09-22 Karl Georg K G Eisenwarengross Claw anchor
US3212389A (en) * 1963-02-25 1965-10-19 Sanford Ind Inc Reinforced connector plate
US3347126A (en) * 1965-10-04 1967-10-17 Gail H Templin Connector plate for wood trusses
US3981051A (en) * 1970-03-16 1976-09-21 Brumlik George C Bristle-like gripping device
US3667337A (en) * 1970-06-11 1972-06-06 James Stanley Burke Grip plate for wooden truss members
US3703304A (en) * 1971-09-09 1972-11-21 Atlas Eng Products Inc Construction element with anchor teeth
US4679367A (en) * 1985-08-29 1987-07-14 Jack Walters & Sons, Corp. Interconnecting of wooden members
WO2007112987A1 (en) * 2006-03-31 2007-10-11 Reinz-Dichtungs-Gmbh Mounting device and method for producing
US20100038511A1 (en) * 2006-03-31 2010-02-18 Matthias Golle Mounting Device and Method for Producing
US8297581B2 (en) 2006-03-31 2012-10-30 Matthias Golle Mounting device and method for producing
EP2396126A4 (en) * 2009-02-10 2017-03-15 Industrial Origami, Inc. Sheet of material with bend-controlling structures and method
US20100247934A1 (en) * 2009-03-25 2010-09-30 Airbus Operations Limited Profile of interfacing projections
US8387229B2 (en) 2009-03-25 2013-03-05 Airbus Operations Limited Profile of interfacing projections
DE102010042463A1 (en) * 2010-10-14 2012-04-19 Agm Mader Gmbh Connector for connecting wooden components of wooden support construction during construction of e.g. industrial building, has set of pin elements fastened to support body, where retainer of one element includes projection and/or protrusion
US20200309176A1 (en) * 2017-08-03 2020-10-01 Safran Seats Method for assembling a metal part with a composite part and corresponding assembly of parts
US12060907B2 (en) * 2017-08-03 2024-08-13 Safran Seats Method for assembling a metal part with a composite part and corresponding assembly of parts
US20200224440A1 (en) * 2019-01-16 2020-07-16 Daniel H. Conklin Drywall repair apparatus and methods
US10829949B2 (en) * 2019-01-16 2020-11-10 Daniel H Conklin Drywall repair apparatus and methods

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