US3076373A - Fastener with a linearly oriented thermoplastic covering - Google Patents
Fastener with a linearly oriented thermoplastic covering Download PDFInfo
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- US3076373A US3076373A US773854A US77385458A US3076373A US 3076373 A US3076373 A US 3076373A US 773854 A US773854 A US 773854A US 77385458 A US77385458 A US 77385458A US 3076373 A US3076373 A US 3076373A
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- Prior art keywords
- shank
- staple
- fastener
- thermoplastic material
- fastened
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- 229920001169 thermoplastic Polymers 0.000 title description 4
- 239000004416 thermosoftening plastic Substances 0.000 title description 3
- 239000000463 material Substances 0.000 claims description 54
- 230000003014 reinforcing effect Effects 0.000 claims description 21
- 239000012815 thermoplastic material Substances 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005201 scrubbing Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 101000703464 Homo sapiens SH3 and multiple ankyrin repeat domains protein 2 Proteins 0.000 claims 3
- 102100030680 SH3 and multiple ankyrin repeat domains protein 2 Human genes 0.000 claims 3
- 239000004033 plastic Substances 0.000 description 37
- 239000002023 wood Substances 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 3
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- 230000001070 adhesive effect Effects 0.000 description 2
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- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011121 hardwood Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
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- 239000002759 woven fabric Substances 0.000 description 1
Images
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
- F16B15/0092—Coated nails or staples
-
- 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
- F16B15/08—Nails; Staples formed in integral series but easily separable
-
- 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
- Y10S206/00—Special receptacle or package
- Y10S206/82—Separable, striplike plural articles
-
- 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
- Y10S411/904—Fastener or fastener element composed of nonmetallic material
- Y10S411/907—Elastomeric
-
- 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
- Y10S411/92—Staple
-
- 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
- Y10S411/922—Nail, spike or tack having locking device
Definitions
- the present invention relates to fasteners, and more particularly wire reinforced plastic filament fasteners, such as staples, bookbinding stitches, nails and the like, adapted to be driven into or through material to be fastened, an object of the invention being to provide a fastener of this character which may be economically produced in a variety of colors, and which has advantages in holding power, easier penetration, freedom from corrosion, increased columnar strength, etc. over conventional Wire or coated wire fasteners heretofore in use.
- FIG. 1 is a perspective view of ing to the invention
- FIG. 2 is an end elevation
- FIG. 3 is a top plan view
- FIG. 4 is a horizontal sectional view on an enlarged scale, taken along the line 44 of FIG. 1;
- FIGS. 5, 6 and 7 are sectional views, similar to FIG. 4, showing modified forms of the invention.
- FIG. 8 is a view partially in end elevation and partially in section, showing a staple according to the invention driven into a wood block or the like;
- FIG. 9 is a horizontal sectional view on an enlarged scale, taken along the line 9-9 of FIG. 8, showing the cross-sectional shape of the driven staple leg;
- FIG. 10 is a sectional view similar to FIG. 8, showing in section the bridge of the staple as driven by a special driver;
- FIG. 11 is a perspective view showing according to the invention.
- FIG. 12 is an enlarged sectional view showing the manner in which the staples in the stick are held together by an adhesive coating
- FIG. 13 is a view similar to FIG. 12, and showing the manner in which the staples in the stick are held together by bonding;
- FIGS. 14 and 15 are fragmentary side elevations showing modified end formations of the staple legs.
- FIGS. 16 and 17 are sectional views, similar to FIG. 4, showing further modified forms of the invention.
- the invention is shown embodied in a staple 10, which is of conventional inverted U-shape and is formed from a cut-off section of filament having the crosssectional form of the staple.
- the manner of forming and assembling the individual staples in a stick is substantially similar to that heretofore practised with conventional staples, the staple legs or shanks 11 being bent downwardly with respect to the bridge 12 either before or after the cut staple forming lengths are adhered together in stick form.
- the driving ends of the staple legs each have a chisel cut 13 which is disposed at a relatively steep angle in one a plastic staple accorda stick of staples 3,076,373 Patented Feb. 5, 1963 direction at one side of the staple, direction at the other side of the presently to more fully appear.
- the filament from which the staple lengths are cut comprises a pair of spaced parallel reinforcing wires or cone members 14 and 15, which may be of steel or non-ferrous metal and of circular or other suitable cross-section, depending upon the particular end use, and which are contained within a plastic body 16.
- the plastic body is of thermoplastic plastic material firmly bonded to the reinforcing wires, so that the staple may be driven into hard wood or other suitable material without fracture or skinning back of the plastic material.
- the plastic material is bonded to the Wires and is externally shaped by passage through suitable extrusion dies to provide the desired cross-sectional shape, which, as shown in FIG. 4, is fiat or rectangular with rounded corners, but which may be of any suitable shape.
- thermoplastic with cold flow properties, examples being nylon and polypropylene.
- this material is molecularly oriented to give it increased tensile strength in the linear direction of the filament, as well as to effect a firm bond with the reinforcing Wires.
- Plastic materials of this type have long chain-like molecules which in the mass of material prior to extrusion have a haphazard arrangement like the straws in a hay stack.
- the long-chain molecules become oriented, taking on an orderly arrangement in parallel relation to the extrusion axis, with the result that the extrusion has an increased tensile and columnar strength.
- the body of plastic material completely covers the spaced wires and disposes a substantial area of the material between the Wires, so that a substantial percentage of the material making up the filament is plastic.
- the intermediate portion of the plastic material which transversely spans and fills the space between the wires has its transverse exposed surfaces disposed outwardly of the transverse planes in which the opposite sides of the pair of wires lie, so that upon the application of pressure to force the wires toward each other the intermediate portion of the-plastic body will be compressed and its transverse exposed surfaces will bulge outwardly.
- the composition of the thermoplastic material is such that it has an elastic memory recovery factor, is compressible, relatively hard, tough and flexible to thereby withstand scrubbing and bending.
- the strip may be formed to provide any desired variation in the-percentage between the wire material and the plastic material, depending upon the requirements of the particular type of staple.
- a satisfactory proportion of wire material to plastic material is 50% of each, in crosssectional area.
- the wires are disposed adjacent the edges of the filament with a relatively thin wall of the plastic material between the wire and the edges of the filament. This gives a maximum of metal in the width of the staple for greatest stiffness and driving power.
- the arrangement disposes the bevel cut end of one of the Wires adjacent the entering point of the cut end at its most advantageous point for penetrating the wood or other material into which the staple is driven.
- the cut ends may be beveled inwardly and downwardly, as at 13a in FIG. 14, or they may have a V-shaped cut, as at 13b in FIG. 15.
- an elongated filament constitutes the fastener
- the fastening is accomplished by embedding the filament or a shank portion thereof in the fastened material as, for instance, by driving into wood, or by penetrating the material and clinching, as, for instance, by bending the legs of a staple upon the opposite side of the fastened material from the bridge of the staple.
- the fasteners are successively cut from a length of filament, usually in the form of a coil or spool, and the invention contemplates fasteners of this type.
- An important feature of the invention is the orientation of the plastic material in relation to the reinforcing wire, by which advantages are obtained peculiarly related to the function of the fastener.
- the orientation of the plastic material which results from extruding it about the reinforcing wire, is such that the greater the degree of orientation the greater the columnar strength of the filament. Also, the highest degree of orientation takes place adjacent the surfaces of the reinforcing wires, and as the bonding to the wires increases with the increase of the orientation, it will be seen that the greatest resistance to skinning back or peeling is present at the most effective points, and particularly in the thin areas of the plastic material adjacent the edges.
- the combined oriented plastic material and the reinforcing wires complement each other, the plastic material giving increased columnar strength to the reinforcing wires and the reinforcing wires lending formability to the plastic material which would be stiff or bristly otherwise.
- the arrangement makes possible the provision of reinforcing wires of relatively small size in relation to the overall cross-sectional dimension of the filament, and of various tempers to give desired results based upon the end use.
- FIGS. 8 and 9 the staple is shown driven into a wood structure 17 to secure a sheet of material 18 thereto.
- the chisel cut ends 13 of the staple legs cause the staple legs to be deflected in the direction of the entering points, the staple leg at one side curving in one direction and the staple leg at the other side curving in the other direction.
- the arrangement of thewires is suchthat they can bend independently of each other in the'planes of the staple legs, despite the fact that the staples are of substantially greater width than thickness, and as a result the holding power of the staple is greatly increased.
- the reinforcing wires are pressed toward each other, as a result of the compressibility of the plastic and the fact that the bevel cut end of the wire adjacent the upper end of the cut end 13 tends to wedge toward the cut end of the wire adjacent the entering point.
- This causes the plastic body of the staple to be bulged outwardly between the wires through cold flow of the plastic material, as shown in FIG. 9, thus in effect locking the staple legs into the wood or other material into which they are driven.
- the forcing of the plastic against the fibers of the wood results in a very high bonding or anchorage factor.
- the reinforcing wires being pressed toward each other and the plastic material being bulged outwardly into increased bonding or anchoring relation.
- the staple of the invention also makes possible the swedging of the staple bridge to increase its width and cause the plastic material to be cold flowed in relation to the material being stapled.
- the driving tool 19 which may form an operative part of a stapling machine of conventional type, is provided with a specially shaped swedging surface 20 adapted to depress the plastic material of the staple bridge between the reinforcing wires, thus spreading the bridge andincreasing its gripping power on the material being held.
- the plastic material may also be heat sealed to the material being fastened, this being especially advantageous in staple fastening employed in woven fabrics, garments, or the like.
- FIG. 5 there is wire reinforcing of the plastic staple is of substantially dumbbell shape in cross-section, and consists of a pair of round wirestrips 14a and 15a joined by a straight web 21.
- FIG. 6 there is shown a further modification, substantially similar to that shown in FIG. 5, but in which the round wire strips 14a and are joined by a transversely curved web 22. In both of these arrangements the wire strips can be compressed toward each other, the web 21 shown in FiG. 5 bending in either direction and the web 22, as shown in FIG. 6, bending inthe direction of its curvature.
- FIG. 7 there is shown another modification in which the plastic body 16a is of oval cross-section.
- FIG. 16 shows a modification in which the reinforcing wires 14b and 15b are of rectangular cross-section.
- FIG. 17 there is shown another modification in which the plastic body 16b is of circular cross-section.
- FIGS. l l-13 show the manner in which the staples of the invention may be secured together to provide a staple stick 2.3.
- the individual staples it) are adhered together by means of an adhesive coating 24, and as seen in FIG. 13, the individual staples 10 are secured together by bonding the plastic material at the points of contact between adjacent staples, as indicated at 25.
- a fastener having at least a shank portion thereof in the form of a filament and wherein said shank of said fastener has its leading end of substantially no greater cross sectional area than any other portion of the shankand is drivable lengthwise into material to be fastened and wherein the holding power of said shank is increased, said shank comprising a reinforcing metallic core comprising continuous longitudinally extending transversely spaced parallel members defining a longitudinal pocket between them, said longitudinal pocket being of a cross sectional area at least as large as the cross sectional area of one of said reinforcing core members, and a thermoplastic material bonded to each of said core members throughout the length thereof and completely encasing same in surshowna modification in which the rounding relation thereto and completely filling said pocket, said thermoplastic material being of such composition that same has an elastic memory recovery factor, is compressible, relatively hard, tough and flexible to thereby withstand scrubbing and bending, and will bond to certain metals, said thermoplastic material having its fibres linearly oriented
- the fastener as defined in claim 1 further characterized by a transverse web integral with and connecting said core members and transversely bendable through said relative lateral movement of said core members toward each other.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Building Environments (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Wire Processing (AREA)
Description
Feb. 5, 1963 c. G MATTHEWS 3,076,373
FASTENER WITH A LINEARLY ORIENTED THERMOPLASTIC COVERING Filed Nov. 14, 1958 PEA. F EL 11g? g INVENTOR. /\\a BYRIL. El. MATTHEWEI 74 ,5 2 b/W A T TDRNEY F g.5. ljngl kklqli United States Patent Ofitice Filed Nov. 14, 1958, Ser. No. 773,854 6 Claims. (Cl. 85-23) The present invention relates to fasteners, and more particularly wire reinforced plastic filament fasteners, such as staples, bookbinding stitches, nails and the like, adapted to be driven into or through material to be fastened, an object of the invention being to provide a fastener of this character which may be economically produced in a variety of colors, and which has advantages in holding power, easier penetration, freedom from corrosion, increased columnar strength, etc. over conventional Wire or coated wire fasteners heretofore in use.
Other objects and advantages of the invention will be come apparent from a consideration of the following detailed description taken in connection with the accompanying drawings wherein a satisfactory embodiment of the invention is shown. However, it will be understood that the invention is not limited to the details disclosed but includes all such variations and modifications as fall within the spirit of the invention and the scope of the appended claims.
In the drawings:
FIG. 1 is a perspective view of ing to the invention;
FIG. 2 is an end elevation;
FIG. 3 is a top plan view;
FIG. 4 is a horizontal sectional view on an enlarged scale, taken along the line 44 of FIG. 1;
FIGS. 5, 6 and 7 are sectional views, similar to FIG. 4, showing modified forms of the invention;
FIG. 8 is a view partially in end elevation and partially in section, showing a staple according to the invention driven into a wood block or the like;
'FIG. 9 is a horizontal sectional view on an enlarged scale, taken along the line 9-9 of FIG. 8, showing the cross-sectional shape of the driven staple leg;
FIG. 10 is a sectional view similar to FIG. 8, showing in section the bridge of the staple as driven by a special driver;
FIG. 11 is a perspective view showing according to the invention;
FIG. 12 is an enlarged sectional view showing the manner in which the staples in the stick are held together by an adhesive coating;
FIG. 13 is a view similar to FIG. 12, and showing the manner in which the staples in the stick are held together by bonding;
FIGS. 14 and 15 are fragmentary side elevations showing modified end formations of the staple legs; and
FIGS. 16 and 17 are sectional views, similar to FIG. 4, showing further modified forms of the invention.
Referring to the drawings, and particularly to FIGS. 1-4, the invention is shown embodied in a staple 10, which is of conventional inverted U-shape and is formed from a cut-off section of filament having the crosssectional form of the staple. The manner of forming and assembling the individual staples in a stick is substantially similar to that heretofore practised with conventional staples, the staple legs or shanks 11 being bent downwardly with respect to the bridge 12 either before or after the cut staple forming lengths are adhered together in stick form.
The driving ends of the staple legs each have a chisel cut 13 which is disposed at a relatively steep angle in one a plastic staple accorda stick of staples 3,076,373 Patented Feb. 5, 1963 direction at one side of the staple, direction at the other side of the presently to more fully appear.
As shown in FIG. 4, the filament from which the staple lengths are cut comprises a pair of spaced parallel reinforcing wires or cone members 14 and 15, which may be of steel or non-ferrous metal and of circular or other suitable cross-section, depending upon the particular end use, and which are contained within a plastic body 16. The plastic body is of thermoplastic plastic material firmly bonded to the reinforcing wires, so that the staple may be driven into hard wood or other suitable material without fracture or skinning back of the plastic material. The plastic material is bonded to the Wires and is externally shaped by passage through suitable extrusion dies to provide the desired cross-sectional shape, which, as shown in FIG. 4, is fiat or rectangular with rounded corners, but which may be of any suitable shape. It has been found in practice that a satisfactory material is a thermoplastic with cold flow properties, examples being nylon and polypropylene. In the process of extrusion this material is molecularly oriented to give it increased tensile strength in the linear direction of the filament, as well as to effect a firm bond with the reinforcing Wires. Plastic materials of this type have long chain-like molecules which in the mass of material prior to extrusion have a haphazard arrangement like the straws in a hay stack. However, when subjected to the drawing pressure of extrusion the long-chain molecules become oriented, taking on an orderly arrangement in parallel relation to the extrusion axis, with the result that the extrusion has an increased tensile and columnar strength.
The body of plastic material completely covers the spaced wires and disposes a substantial area of the material between the Wires, so that a substantial percentage of the material making up the filament is plastic. The intermediate portion of the plastic material which transversely spans and fills the space between the wires has its transverse exposed surfaces disposed outwardly of the transverse planes in which the opposite sides of the pair of wires lie, so that upon the application of pressure to force the wires toward each other the intermediate portion of the-plastic body will be compressed and its transverse exposed surfaces will bulge outwardly. The composition of the thermoplastic material is such that it has an elastic memory recovery factor, is compressible, relatively hard, tough and flexible to thereby withstand scrubbing and bending. By varying the spacing of the Wires, as well as the wire size and the cross-sectional shape of the plastic material, the strip may be formed to provide any desired variation in the-percentage between the wire material and the plastic material, depending upon the requirements of the particular type of staple. A satisfactory proportion of wire material to plastic material is 50% of each, in crosssectional area. 1
The wires are disposed adjacent the edges of the filament with a relatively thin wall of the plastic material between the wire and the edges of the filament. This gives a maximum of metal in the width of the staple for greatest stiffness and driving power. In the case of the chisel cut end 13 the arrangement disposes the bevel cut end of one of the Wires adjacent the entering point of the cut end at its most advantageous point for penetrating the wood or other material into which the staple is driven. In certain types of staples, particularly those in which the legs are clinched at the opposite side of the material being stapled from the staple bridge, the cut ends may be beveled inwardly and downwardly, as at 13a in FIG. 14, or they may have a V-shaped cut, as at 13b in FIG. 15.
It will be noted that the ends of the reinforcing wires are exposed in the cut ends of the staple legs, and, due
and in the opposite staple, for a purpose to their closeness to the edges of the staple legs, as well as their increased area resulting from their bevel cuts, an effective point is provided for penetrating hard wood or other suitable materials. The cut ends of the wires are surrounded by the plastic material, thus eliminating the rough burrs usually present on an all metal staple and resulting in less tearing of the paper or fabric that maybe penetrated by the staple.
It is pointed out that in addition to pre-formed inverted U-shaped staples the invention contemplates other forms of fasteners, as, for instance, bookbinding stitches,
nails, and the like, where an elongated filament constitutes the fastener, and whether the fastening is accomplished by embedding the filament or a shank portion thereof in the fastened material as, for instance, by driving into wood, or by penetrating the material and clinching, as, for instance, by bending the legs of a staple upon the opposite side of the fastened material from the bridge of the staple. In certain types of stapling machines, as well as in bookbinding machines, the fasteners are successively cut from a length of filament, usually in the form of a coil or spool, and the invention contemplates fasteners of this type.
An important feature of the invention is the orientation of the plastic material in relation to the reinforcing wire, by which advantages are obtained peculiarly related to the function of the fastener. The orientation of the plastic material, which results from extruding it about the reinforcing wire, is such that the greater the degree of orientation the greater the columnar strength of the filament. Also, the highest degree of orientation takes place adjacent the surfaces of the reinforcing wires, and as the bonding to the wires increases with the increase of the orientation, it will be seen that the greatest resistance to skinning back or peeling is present at the most effective points, and particularly in the thin areas of the plastic material adjacent the edges. The combined oriented plastic material and the reinforcing wires complement each other, the plastic material giving increased columnar strength to the reinforcing wires and the reinforcing wires lending formability to the plastic material which would be stiff or bristly otherwise. The arrangement makes possible the provision of reinforcing wires of relatively small size in relation to the overall cross-sectional dimension of the filament, and of various tempers to give desired results based upon the end use.
In the case of a clinched staple, where the staple legs are bent with respect to the staple bridge, it has been found that increased orientation of the plastic material takes place in the bends, with the result that the staple legs have a tendency to lay deader, or with less springback and curvature upon the fastened surface, than is the case with ,an all metal staple. Hence, a tighter and snugger fitting of the staple is obtained. It has also been found that the oriented plastic material in the bend so supports the bend ofthe reinforcing wires that the latter may be bent back from their clinched positions with less tendency to fracture than is the case with all metal staples. Other advantages of the plastic wire reinforced staple of the invention are the ability to obtain any desired colors, chemical and corrosion resistance, resistance to weather, dielectric properties, reduction of wear in tools for forming, etc.
In FIGS. 8 and 9 the staple is shown driven into a wood structure 17 to secure a sheet of material 18 thereto. It will be seen thatthe chisel cut ends 13 of the staple legs cause the staple legs to be deflected in the direction of the entering points, the staple leg at one side curving in one direction and the staple leg at the other side curving in the other direction. The arrangement of thewires is suchthat they can bend independently of each other in the'planes of the staple legs, despite the fact that the staples are of substantially greater width than thickness, and as a result the holding power of the staple is greatly increased. Also, during the penetration of the staple legs the reinforcing wires are pressed toward each other, as a result of the compressibility of the plastic and the fact that the bevel cut end of the wire adjacent the upper end of the cut end 13 tends to wedge toward the cut end of the wire adjacent the entering point. This causes the plastic body of the staple to be bulged outwardly between the wires through cold flow of the plastic material, as shown in FIG. 9, thus in effect locking the staple legs into the wood or other material into which they are driven. In the case of wood, the forcing of the plastic against the fibers of the wood results in a very high bonding or anchorage factor. Substantially the same result is obtained in the case of a staple leg driven straight into wood or other suitable material, the reinforcing wires being pressed toward each other and the plastic material being bulged outwardly into increased bonding or anchoring relation.
The staple of the invention also makes possible the swedging of the staple bridge to increase its width and cause the plastic material to be cold flowed in relation to the material being stapled. As seen in FIG. 10, the driving tool 19, which may form an operative part of a stapling machine of conventional type, is provided with a specially shaped swedging surface 20 adapted to depress the plastic material of the staple bridge between the reinforcing wires, thus spreading the bridge andincreasing its gripping power on the material being held. For example, if used to attach screening or cloth to a frame the plastic material will flow over and around the screen, giving greater anchorage than would be obtained when using conventional flat wire staples. The plastic material may also be heat sealed to the material being fastened, this being especially advantageous in staple fastening employed in woven fabrics, garments, or the like.
In FIG. 5 there is wire reinforcing of the plastic staple is of substantially dumbbell shape in cross-section, and consists of a pair of round wirestrips 14a and 15a joined by a straight web 21. In FIG. 6 there is shown a further modification, substantially similar to that shown in FIG. 5, but in which the round wire strips 14a and are joined by a transversely curved web 22. In both of these arrangements the wire strips can be compressed toward each other, the web 21 shown in FiG. 5 bending in either direction and the web 22, as shown in FIG. 6, bending inthe direction of its curvature. In FIG. 7 there is shown another modification in which the plastic body 16a is of oval cross-section. FIG. 16 shows a modification in which the reinforcing wires 14b and 15b are of rectangular cross-section. In FIG. 17 there is shown another modification in which the plastic body 16b is of circular cross-section.
FIGS. l l-13 show the manner in which the staples of the invention may be secured together to provide a staple stick 2.3. As shown in FIG. 12, the individual staples it) are adhered together by means of an adhesive coating 24, and as seen in FIG. 13, the individual staples 10 are secured together by bonding the plastic material at the points of contact between adjacent staples, as indicated at 25.
What is claimed is:
l. A fastener having at least a shank portion thereof in the form of a filament and wherein said shank of said fastener has its leading end of substantially no greater cross sectional area than any other portion of the shankand is drivable lengthwise into material to be fastened and wherein the holding power of said shank is increased, said shank comprising a reinforcing metallic core comprising continuous longitudinally extending transversely spaced parallel members defining a longitudinal pocket between them, said longitudinal pocket being of a cross sectional area at least as large as the cross sectional area of one of said reinforcing core members, and a thermoplastic material bonded to each of said core members throughout the length thereof and completely encasing same in surshowna modification in which the rounding relation thereto and completely filling said pocket, said thermoplastic material being of such composition that same has an elastic memory recovery factor, is compressible, relatively hard, tough and flexible to thereby withstand scrubbing and bending, and will bond to certain metals, said thermoplastic material having its fibres linearly oriented in substantially parallel relation [to the longitudinal axis of said shank whereby the thermoplastic material in said pocket compresses upon relative lateral movement oi said core members toward each other when said shank is driven into a material to be fastened, said elastic memory recovery factor enabling the thermoplastic material to expand against the walls of the aperture in said material to be fastened to thereby increase the holding relation of said shank relative thereto. 2. The fastener as defined in claim 1, wherein said shank portion is substantially circular in cross-section.
3. The fastener as defined in claim 1, wherein said shank portion is substantially rectangular in cross-section with the central longitudinal plane along its major axis coinciding with the longitudinal axes of said core members. 4-. The fastener as defined in claim 1, wherein said shank portion is substantially oval in cross-section with the central longitudinal plane along its major axis coinciding With the longitudinal axes of said core members.
5. The fastener as defined in claim 1, further characterized by a transverse web integral with and connecting said core members and transversely bendable through said relative lateral movement of said core members toward each other.
26. The fastener as defined in claim 1, wherein said filament is of inverted U-shape staple form having a bridge portion and a pair of shank portions drivable lengthwise into material to be fastened, and wherein the bends between said bridge and shank portions are along transverse lines parallel to a plane passing through the longitudinal axes oi said core members.
References (Iited in the file of this patent UNITED STATES PATENTS 339,769 Hayes Apr. 13, 1886 589,584 Ewett Sept. 7, 1897 617,064 Traun Jan. 3, 1899 1,823,981 Lamplough Sept. 22, 1931 2,115,495 Mapeisden Apr. 26, 1938 2,522,656 Whalen Sept. 19, 1950 2,904,846 Smith Sept. 22, 1959
Claims (1)
1. A FASTENER HAVING AT LEAST A SHANK PORTION THEREOF IN THE FORM OF A FILAMENT AND WHEREIN SAID SHANK OF SAID FASTENER HAS ITS LEADING END OF SUBSTANTIALLY NO GREATER CROSS SECTIONAL AREA THAN ANY OTHER PORTION OF THE SHANK AND IS DRIVABLE LENGTHWISE INTO MATERIAL TO BE FASTENED AND WHEREIN THE HOLDING POWER OF SAID SHANK IS INCREASED, SAID SHANK COMPRISING A REINFORCING METALLIC CORE COMPRISING CONTINUOUS LONGITUDINALLY EXTENDING TRANSVERSELY SPACED PARALLEL MEMBERS DEFINING A LONGITUDINAL POCKET BETWEEN THEM, SAID LONGITUDINAL POCKET BEING OF A CROSS SECTIONAL AREA AT LEAST AS LARGE AS THE CROSS SECTIONAL AREA OF ONE OF SAID REINFORCING CORE MEMBERS, AND A THERMOPLASTIC MATERIAL BONDED TO EACH OF SAID CORE MEMBERS THROUGHOUT THE LENGTH THEREOF AND COMPLETELY ENCASING SAME IN SURROUNDING RELATION THERETO AND COMPLETELY FILLING SAID POCKET, SAID THERMOPLASTIC MATERIAL BEING OF SUCH COMPOSITION THAT SAME HAS AN ELASTIC MEMORY RECOVERY FACTOR, IS COMPRESSIBLE, RELATIVELY HARD, TOUGH AND FLEXIBLE TO THEREBY WITHSTAND SCRUBBING AND BENDING, AND WILL BOND TO CERTAIN METALS, SAID THERMOPLASTIC MATERIAL HAVING ITS FIBERS LINEARLY ORIENTED IN SUBSTANTIALLY PARALLEL RELATION TO THE LONGITUDINAL AXIS OF SAID SHANK WHEREBY THE THERMOPLASTIC MATERIAL IN SAID POCKET COMPRESSES UPON RELATIVE LATERAL MOVEMENT OF SAID CORE MEMBERS TOWARD EACH OTHER WHEN SAID SHANK IS DRIVEN INTO A MATERIAL TO BE FASTENED, SAID ELASTIC MEMORY RECOVERY FACTOR ENABLING THE THERMOPLASTIC MATERIAL TO EXPAND AGAINST THE WALLS OF THE APERTURE IN SAID MATERIAL TO BE FASTENED TO THEREBY INCREASED THE HOLDING RELATION OF SAID SHANK RELATIVE THERETO.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US773854A US3076373A (en) | 1958-11-14 | 1958-11-14 | Fastener with a linearly oriented thermoplastic covering |
GB39350/62A GB980654A (en) | 1958-11-14 | 1962-10-17 | Improvements in or relating to fasteners having filamentary shanks drivable lengthwise into material to be fastened |
FR913673A FR1338684A (en) | 1958-11-14 | 1962-10-27 | Staples enhancements |
BE648224A BE648224A (en) | 1958-11-14 | 1964-05-21 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US773854A US3076373A (en) | 1958-11-14 | 1958-11-14 | Fastener with a linearly oriented thermoplastic covering |
Publications (1)
Publication Number | Publication Date |
---|---|
US3076373A true US3076373A (en) | 1963-02-05 |
Family
ID=25099525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US773854A Expired - Lifetime US3076373A (en) | 1958-11-14 | 1958-11-14 | Fastener with a linearly oriented thermoplastic covering |
Country Status (3)
Country | Link |
---|---|
US (1) | US3076373A (en) |
BE (1) | BE648224A (en) |
GB (1) | GB980654A (en) |
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US3170160A (en) * | 1962-11-14 | 1965-02-23 | Thomas & Betts Co Inc | Insulated "c" rings in coherent strip form |
US3252569A (en) * | 1963-01-29 | 1966-05-24 | Plasti Clad Metal Products Inc | Plastic coated laminated nail |
US3267660A (en) * | 1963-08-30 | 1966-08-23 | Swingfast Inc | Method of securing fasteners in stick form |
US3357296A (en) * | 1965-05-14 | 1967-12-12 | Keuneth W Lefever | Staple fastener |
US3506116A (en) * | 1968-12-13 | 1970-04-14 | Thomas & Betts Corp | Fully insulated c rings |
US3515194A (en) * | 1969-03-17 | 1970-06-02 | Acme Staple Co Inc | Threaded staple |
US3563372A (en) * | 1969-04-21 | 1971-02-16 | Fastener Corp | Method and apparatus for coating fastening devices, and improved coating and fastening devices |
DE2149951A1 (en) * | 1971-05-10 | 1973-01-18 | Robert J Schneider | STAPLE OR THE SAME |
US3894469A (en) * | 1973-01-05 | 1975-07-15 | Nordisk Kartro Ab | Fastener |
US4321232A (en) * | 1980-03-25 | 1982-03-23 | Tegal Corporation | Package and sterilizing process for same |
FR2655976A1 (en) * | 1989-12-19 | 1991-06-21 | Europ Propulsion | Process for the production of a composite structure, strip of staples of composite material enabling the process to be implemented and process for the manufacture of the strip of staples |
US5223675A (en) * | 1992-04-02 | 1993-06-29 | Taft Anthony W | Cable fastener |
US5620289A (en) * | 1996-02-09 | 1997-04-15 | Curry; Rinda M. | Colored staples |
US6095739A (en) * | 1998-07-02 | 2000-08-01 | Albertson; Stephen H. | Categorizing fasteners and construction connectors using visual identifiers |
US20040115022A1 (en) * | 1997-07-03 | 2004-06-17 | Albertson Stephen H. | Categorizing fasteners and construction connectors using visual identifiers |
US20040126201A1 (en) * | 2002-08-09 | 2004-07-01 | Brian Kobylinski | Color-coded staples |
US20040265093A1 (en) * | 2003-06-30 | 2004-12-30 | Strunk Jeffrey L. | Self-filling fastener and method of making |
US20050147485A1 (en) * | 2003-06-30 | 2005-07-07 | Strunk Jeffrey L. | Self-filling fastener and method of making |
US20070278277A1 (en) * | 2006-05-19 | 2007-12-06 | Applied Medical Resources Corporation | Surgical stapler |
US20080179371A1 (en) * | 2007-01-29 | 2008-07-31 | The Halex Company | Portable fastener driving device |
US20090119860A1 (en) * | 2006-03-16 | 2009-05-14 | Klaus Amsel | Riveted joint based on plastic |
US9657761B2 (en) * | 2015-08-19 | 2017-05-23 | Taizhou Dajiang Ind. Co., Ltd. | Double-pin nail assembly |
US20190154071A1 (en) * | 2017-11-20 | 2019-05-23 | Cah, Inc | Double-adhesive-tape spiked-foot staple |
US10448949B2 (en) | 2015-08-06 | 2019-10-22 | Applied Medical Resources Corporation | Surgical stapler having locking articulation joint |
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US20210317862A1 (en) * | 2018-08-22 | 2021-10-14 | Omg, Inc. | Self-Sealing Fastener and Collated Strips Thereof for Integrated Sheathing |
US11311293B2 (en) | 2019-02-27 | 2022-04-26 | Applied Medical Resources Corporation | Surgical stapling instrument having a two-position lockout mechanism |
USD980051S1 (en) * | 2020-10-15 | 2023-03-07 | Milwaukee Electric Tool Corporation | Staple |
US20230218293A1 (en) * | 2016-02-08 | 2023-07-13 | Acumed Llc | Implant inserter |
US11717293B2 (en) | 2019-03-29 | 2023-08-08 | Applied Medical Resources Corporation | Reload cover for surgical stapling system |
US11730475B2 (en) | 2020-10-29 | 2023-08-22 | Applied Medical Resources Corporation | Surgical stapler having a powered handle |
US11771428B2 (en) | 2020-10-29 | 2023-10-03 | Applied Medical Resources Corporation | Actuation shaft retention mechanism for surgical stapler |
US11913483B2 (en) | 2020-05-28 | 2024-02-27 | Milwaukee Electric Tool Corporation | Insulated staple and staple collation |
USD1016600S1 (en) * | 2018-06-21 | 2024-03-05 | Louis Vuitton Malletier | Staple |
US11963711B2 (en) | 2019-12-31 | 2024-04-23 | Applied Medical Resources Corporation | Electrosurgical system with tissue and maximum current identification |
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AR206305A1 (en) * | 1972-11-28 | 1976-07-15 | Australian Wire Ind Pty | REINFORCEMENT FIBERS FOR MOLDABLE MATRIX MATERIALS METHOD AND APPARATUS TO PRODUCE IT |
US4261244A (en) * | 1979-05-14 | 1981-04-14 | Senco Products, Inc. | Surgical staple |
AU661033B2 (en) * | 1991-09-03 | 1995-07-13 | David Dennis Dunkley | Fixing devices |
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US3170160A (en) * | 1962-11-14 | 1965-02-23 | Thomas & Betts Co Inc | Insulated "c" rings in coherent strip form |
US3252569A (en) * | 1963-01-29 | 1966-05-24 | Plasti Clad Metal Products Inc | Plastic coated laminated nail |
US3267660A (en) * | 1963-08-30 | 1966-08-23 | Swingfast Inc | Method of securing fasteners in stick form |
US3357296A (en) * | 1965-05-14 | 1967-12-12 | Keuneth W Lefever | Staple fastener |
US3506116A (en) * | 1968-12-13 | 1970-04-14 | Thomas & Betts Corp | Fully insulated c rings |
US3515194A (en) * | 1969-03-17 | 1970-06-02 | Acme Staple Co Inc | Threaded staple |
US3563372A (en) * | 1969-04-21 | 1971-02-16 | Fastener Corp | Method and apparatus for coating fastening devices, and improved coating and fastening devices |
DE2149951A1 (en) * | 1971-05-10 | 1973-01-18 | Robert J Schneider | STAPLE OR THE SAME |
US3894469A (en) * | 1973-01-05 | 1975-07-15 | Nordisk Kartro Ab | Fastener |
US4321232A (en) * | 1980-03-25 | 1982-03-23 | Tegal Corporation | Package and sterilizing process for same |
FR2655976A1 (en) * | 1989-12-19 | 1991-06-21 | Europ Propulsion | Process for the production of a composite structure, strip of staples of composite material enabling the process to be implemented and process for the manufacture of the strip of staples |
US5223675A (en) * | 1992-04-02 | 1993-06-29 | Taft Anthony W | Cable fastener |
US5620289A (en) * | 1996-02-09 | 1997-04-15 | Curry; Rinda M. | Colored staples |
US7021878B1 (en) | 1997-07-03 | 2006-04-04 | Trackers Company | Categorizing fasteners and construction connectors using visual identifiers |
US20050055961A1 (en) * | 1997-07-03 | 2005-03-17 | Albertson Stephen H. | Categorizing fasteners and construction connectors using visual identifiers |
US20060133911A1 (en) * | 1997-07-03 | 2006-06-22 | Albertson Stephen H | Categorizing fasteners and construction connectors using visual identifiers |
US20110176885A1 (en) * | 1997-07-03 | 2011-07-21 | Trackers Company | Categorizing fasteners and construction connectors using visual identifiers |
US20040115022A1 (en) * | 1997-07-03 | 2004-06-17 | Albertson Stephen H. | Categorizing fasteners and construction connectors using visual identifiers |
US6095739A (en) * | 1998-07-02 | 2000-08-01 | Albertson; Stephen H. | Categorizing fasteners and construction connectors using visual identifiers |
US20040126201A1 (en) * | 2002-08-09 | 2004-07-01 | Brian Kobylinski | Color-coded staples |
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US20090119860A1 (en) * | 2006-03-16 | 2009-05-14 | Klaus Amsel | Riveted joint based on plastic |
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Also Published As
Publication number | Publication date |
---|---|
BE648224A (en) | 1964-09-16 |
GB980654A (en) | 1965-01-13 |
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