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
  • F16B15/02—Nails; Staples with specially-shaped heads, e.g. with enlarged surfaces
• • 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

Definitions

• This invention relates to fastener packages and more particularly to fastener packages of the T-head nail stick type.
• T-head nail sticks have been available commercially for many, many years.
• a typical example of a prior art T-head nail stick is disclosed in U.S.
• T-head nail stick which is disclosed in the patent is such that the flat striking surfaces of the T-heads of the nails are all disposed in a common plane which extends perpendicularly to the axis of either one of the end nails.
• the penetrating ends of the nails in at least the embodiment of Figure 1 consist of V-shaped edges extending along a line perpendicular to the axis of either of the end nails.
• T-head nail sticks of the configuration disclosed in the aforesaid patent are sometimes referred to as straight sticks and their operating characteristic is that the stick must be moved horizontally in order to feed the leading nail into a vertically extending drive track of a fastener driving device.
• the T-head nail stick In order to accommodate the angular magazines, the T-head nail stick must be likewise angulated so that the heads are stepped in one longitudinal direction progressively from one end nail of the array of nails to the other end nail such that the stepped ends or the striking surfaces and penetrating edges extend generally along a predetermined angle which is equal to the angle of the magazine of. the fastener driving device.
• a T-head nail stick of this configuration can be referred to as an angular stick.
• angular stick known angular
• T-head nail sticks are formed of T-head nails just like those which form the straight sticks shown in the aforesaid patent.
• the result is that when each stick is supported in the angular fastener magazine, each nail of the stick engages the upwardly facing support rail surfaces of the magazine with a line contact at the underside of each T-head portion which line contact is at the trailing end of the head.
• the present invention is based upon the proposition that it is advantageous to provide surface area contact for each nail which is centered with respect to the fore and aft direction of the T-head as oriented in the stick.
• T-head nail stick which will secure the above described advantage.
• this objective is achieved by forming the T-head nail stick from T-head nails each of which is configured so that the underside of the oppositely outwardly extending head portions have flat surfaces which extend at an angle with respect to the plane of the flat striking surface thereof.
• the angled surface configuration is such that the head portions on each side of the .array have coplanar surfaces facing away from the associated striking surfaces and extending in parallel relation to the angular extent of the array so as to enable the coplanar surfaces on opposite sides of the array to engage magazine supporting surfaces extending in the same angle throughout an area of contact rather than a line or point contact.
• Another object of the present invention is the provision of an improved T-head nail stick of the type described which is simple in construction and effective in operation.
• FIG. 1 is a side elevational view of a T-head nail stick embodying the principles of the present invention
• Figure 2 is a lefthand end view of the nail stick
• Figure 3 is a righthand end view of the nail stick.
• each T-head nail includes an elongated shank 12 formed of metal wire having one end thereof configured to facilitate penetration of the nail into a workpiece.
• the penetrating end of each shank 12 is formed with a flat chisel edge 14 which extends in a direction perpendicular to the axis of the shank and intersects the same at the midpoint thereof.
• Each penetrating edge 14 is V-shaped in cross-sectional configuration and may be formed in any known manner.
• each shank 12 is formed, as by swaging or the like, with a T-head constructed in accordance with the principles of the present invention.
• Each T-head includes a pair of head portions 16 extending outwardly from the shank in opposite directions perpendicular to the longitudinal extent of the shank.
• the head portions 16 form with the adjacent end of the ⁇ hank 12 a flat striking surface 18 facing in a direction away from the penetrating edge 14.
• Each head portion 16 is also provided with a second flat surface 20 which faces in a direction generally opposed to the direction in which the striking surface 18 faces.
• the surfaces 20 of both head portions 16 are disposed in the same flat plane.
• this flat plane extends at an angle with respect to a plane passing through the striking surface.
• An exemplary angle is 24-1/2°.
• the angular relationship between the coplanar flat surfaces 20 beneath the head portions 16 with respect to the striking surface 18 on the top of the nail is related to the manner in which the series of nails are assembled in the array forming the stick 10.
• all of the nails in the stick formation array are oriented generally the same so that the shanks 12 of the nails are in abutting relation in the direction of extent of the stick formation array and the head portions 16 extend in opposite directions at right angles to the direction of extent of the stick formation array and likewise are in abutting relation.
• the individual nails of the array however are longitudinally offset in the stick formation equal amounts so that the lower penetrating edges 14 are in a step formation and the upwardly facing striking surfaces 18 likewise are in step formation.
• the relationship of the lower surfaces 20 is the relationship of the lower surfaces 20. As shown, all of the surfaces 20 on each side of the array are disposed in a common plane and, preferably, the coplanar surfaces 20 on both sides are likewise disposed in the same common plane. This common plane extends at an angle which is equal to the angle of the stepped striking surfaces 18 and the stepped penetrating edges 14. It will be noted that the juncture between each surface 20 with the associated shank 12 is defined by the formation of a gripping groove 22 in the adjacent side of the shank which extends angularly in parallel relation with the associated surface 20. Moreover, it is preferable to provide additional parallel angular gripping grooves 24 in each side of the associated shank. As shown, there are four additional gripping grooves 24 on each side of each shank 12.
• the individual nails with the shanks in the abutting array described and with the head portions 16 interrelated in the manner set forth are suitably held in this stick formation array by any known means enabling the individual nails to be stripped from the remaining nails of the nail stick by impacting the striking surface of the leading nail while supporting the remaining nails of the stick beneath their head portions on the surfaces 20 thereof.
• such means takes the form of a cement, such as a thermoplastic resin, or the like which covers at least the abutting shanks 12 of the nails forming the stick 10.
• Such magazine assemblies typically provide two spaced rails which extend downwardly and forwardly to a vertically disposed drive track.
• the two rails have upwardly facing surfaces which engage beneath the outwardly extending head portions 16 of the nails of the stick.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Portable Nailing Machines And Staplers (AREA)

Priority Applications (3)

Applications Claiming Priority (1)

Publications (1)

Family

ID=22202343

Family Applications (1)

Country Status (3)

Cited By (6)

Citations (6)

• 1987
  • 1987-04-09 JP JP50283187A patent/JPH02503025A/ja active Pending
  • 1987-04-09 WO PCT/US1987/000812 patent/WO1988008087A1/en not_active Application Discontinuation
  • 1987-04-09 EP EP19870903087 patent/EP0357594A1/en not_active Withdrawn

Patent Citations (6)

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