CA2264127C - Connector plate and method of assembly - Google Patents

Connector plate and method of assembly Download PDF

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Publication number
CA2264127C
CA2264127C CA002264127A CA2264127A CA2264127C CA 2264127 C CA2264127 C CA 2264127C CA 002264127 A CA002264127 A CA 002264127A CA 2264127 A CA2264127 A CA 2264127A CA 2264127 C CA2264127 C CA 2264127C
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CA
Canada
Prior art keywords
region
teeth
plate
connector plate
wooden
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 - Fee Related
Application number
CA002264127A
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French (fr)
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CA2264127A1 (en
Inventor
John Edwin Griffith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Co-Ordinated Truss & Frame Pty Ltd
Original Assignee
Co-Ordinated Truss & Frame Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Co-Ordinated Truss & Frame Pty Ltd filed Critical Co-Ordinated Truss & Frame Pty Ltd
Publication of CA2264127A1 publication Critical patent/CA2264127A1/en
Application granted granted Critical
Publication of CA2264127C publication Critical patent/CA2264127C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B15/00Nails; Staples
    • F16B15/0023Nail plates
    • F16B15/003Nail plates with teeth cut out from the material of the plate
    • F16B15/0046Nail plates with teeth cut out from the material of the plate from the body of the plate
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S52/00Static structures, e.g. buildings
    • Y10S52/06Toothed connecting means
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/55Member ends joined by inserted section
    • Y10T403/551Externally bridged

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

To facilitate pre-plating of nail plated truss joints, a nail plate (10) has teeth (13) of increased length in a region of the plate for fixing the plate to one member of a joint prior to assembly of the joint.

Description

1015202530CA 02264127 1999-02-24PCT/AU97 /00541I JUL 1993CONNECTOR PLATE AND METHOD OF ASSEMBLYFIELD OF THE INVENTIONThis invention relates to the manufacture of wooden structures such as roof and floortrusses, where structural members such as webs and chords are attached by means ofmetal connector plates, consisting of plates from which have been struck a pattern ofprojecting teeth which are driven into the members to effect the joint. The inventionalso relates to connector plates for use in the manufacture of such members. Theinvention is particularly applicable to the location and attachment of webs to chords inthe manufacture of wooden roof trusses.BACKGROUND ARTVarious procedures are used in the assembly and fixing of trusses. In one approach,the chords are laid out and connected, then the webs are positioned and stapled to thechords to maintain their position while connector plates are applied successively toeach side of each joint. The plates are driven home by pressing. The need for astapling operation at each joint adds to the assembly time, as does the positioning ofthe underneath plate, for example by the use of a jig or frame device, or bytemporarily locating the underneath plate by means of a hammer. The latter techniquehas the further disadvantage that teeth may be bent, reducing the quality of the joint.Attempts have been made to reduce the time involved in truss manufacture byattaching the connector plates to components of the truss prior to their assembly withthe other components. For example, International patent application No.PCT/F191/00104 describes an approach in which the plates for one side of the trussare pre—attached to the webs, while the plates for the other side of the truss are pre-attached to the chords. Such a method is of limited usefulness.SUMMARY OF THE INVENTIONAMENDED SHEETIPEA/AU1015202530CA 02264127 1999-02-24PCT/AU97 /00541"I4JUL1Q98The present invention seeks to provide an alternative approach, which enables theplates for both sides of the joint to be pre-attached to each end of a web, while stillenabling the webs to be brought into position in the truss without difficulty, prior topressing of the joint.This is achieved by providing the nail plates with at least one, but preferably several,teeth of greater length than the remainder of the plate teeth, these longer teeth beinglocated only in the region of the plate which is to be attached to one of the jointmembers, preferably the web.In this way, plates can be attached to the web ends by pressing the plates into position,the press driving only the longer teeth into the web. The opposed ends of the teeth ofthe portion of each plate which extends beyond the end of the web will thus still beseparated by at least the thickness of the chord to which the web is to be attached, sothe web can be brought into position for fixing to the chord without these teeth foulingthe chord and thereby obstructing movement of the web.Of course, while it is preferred to pre—attach the plates to the webs, they may insteadbe pre-attached in the same way to the chords at the correct joint positions and thewebs then brought into position with their ends between the projecting opposed pre-fixed plates.It may be noted here that in U.S. patent 3,304,106 of Gerald M. McCorrnack there isdescribed a nail plate which is divided into a region having short teeth and a regionhaving longer teeth. In the McCormack patent, however, the short teeth have lowwithdrawal strength, so that the plate may be permanently fastened to the member bymeans of the longer teeth and removably fastened to the other member by the shortteeth, in order that the truss may be disassembled for transport and later reassembledon site. Because the short teeth are incapable of forming a permanent joint, nail holesare also provided and the final joint is achieved by nailing through these holes.AMENDED SHEETIPEJ’-\IAU1015202530CA 02264127 1999-02-24PCT/AU97 100541*1-4JULl998A connector plate of the kind described by McCormack is distinguished from platesaccording to the present invention by the fact that the short teeth of McCormack aredesigned for low withdrawal resistance and are incapable of forming a permanentjoint, whereas in the case of the present invention the short teeth are of conventionalconnector plate design, and consequently have conventional withdrawal resistance andare capable of forming a permanent joint. In other words, McCorrnack achieves theability to disassemble the joint by having shorter than normal teeth over one half ofthe plate, whereas in the present invention the ability to pre-attach plates to one side ofthe joint is achieved by using in one half of the plate some teeth which are longer thannormal. The conventional teeth employed in the plate are, ipsofacto, capable offorming a satisfactory joint without additional means such as nailing. Such a jointwill be referred to herein as a permanent joint.The invention will be exemplified below in its application to roof trusses, but it is tobe understood that it is applicable to other structural assemblies of woodencomponents, such as floor trusses.The accompanying drawings illustrate, by way of example only, the application of theinvention to the manufacture of roof trusses.BRIEF DESCRIPTION OF THE DRAWINGSIn the drawings,Fig. 1 is a plan view of a connector plate according to a first embodiment of thepresent invention;Fig. 2 is a side elevation of the connector plate of Fig. 1;Fig. 3 illustrates a connector plate pre-fixed to a web;"l"“"T'~* V‘. ''1'.-": 1‘‘hi.-.I‘1a.iu..J ‘J1 l....l..nll-""“ AU1015202530CA 02264127 1999-02-24PCT/AU97 /005411 4 JUL 1998Fig. 4 illustrates a connector plate according to a second embodiment of the inventionprefixed to a first member; andFig. 5 illustrates the connector plate of Fig. 4 in a first stage of temporary fixing to asecond member.DESCRIPTION OF THE PREFERRED EMBODIMENTSAs shown in Figs. 1 and 2, the connector plate 10 is provided, in a conventionalmanner, with rows of teeth 11 struck out from the plate leaving apertures 12.The manner of formation and the pattern of these teeth may be of any suitable kind.At four locations on the left hand portion of the plate (as viewed in Figs. 1 and 2), alonger tooth 13 is formed by punching from a longer aperture 14. In this way, asillustrated in Fig. 3, a pair of the plates 10 may be attached to an end of a web 15 bydriving the longer teeth 13 into the web, but stopping short of the point where theshorter, conventional teeth 11 penetrate the web.The web can then be introduced with a rotational movement into a truss so that theopposed free ends of the pre-attached plates embrace the chord 16, shown in ghostoutline in Fig. 3, and the joint subsequently formed by pressing the plates in anyconventional manner.The plate 10 illustrated in Figs. 1 and 2 is provided with four long teeth 13, oneapproximately at each comer of the region of the plate to be engaged with the web.This is but one example of a suitable pattern of location of the longer teeth. Theymay, for example, all be located at the rear of the plate, or towards the middle, oralong one or both sides. The location of the longer teeth is entirely a matter of choice.Similarly, the number of longer teeth may be chosen to suit the convenience of theapplication to which the plate is to be put, and to enable efficient production of theplates. While it is possible to use only one longer tooth, a greater number is preferredm-f1w'\1v~.--2--. pt, . ,../u\i'o:a'.3.n;1..‘ ~.;;i*‘..,,;.._;.;IPEA/AU10152025CA 02264127 1999-02-24PCT/AU97 I00541’1!+’JULl998to give stability to the pre-fixing of the plate. It is also preferred in the interests ofstability that longer teeth are located both at the rear and the forward parts of therelevant region of the plate.Connector plates according to the invention can be employed at joints between morethan two members, for example where two or three webs are connected to a chord atthe same location.Figs. 4 and 5 illustrate a fllI'th€I‘ development of the invention, in which the secondportion of the plate is provided with a number of teeth the length of which isintermediate that of the longer teeth provided for the pre-fixing of the first portion ofthe plate, and that of the conventional teeth 11.This plate enables the elimination of separate means, such as stapling, for thetemporary fixing of the web 15 in its correct position in conjunction with the chord 16,prior to the pressing of the joint. The plates 10 (only one of which is shown here) arepre-fixed to the web 15 by pressing them only by a distance which does not exceed thedifference between the length of the teeth 13 and the teeth 17. At this stage the teeth11 will be proud of the surface of the web, and the teeth 17 will not obstruct theengagement of the web with the chord, as the chord enters the space between theopposed free ends of the plates. The plates can then be engaged with the chords bydriving the intermediate teeth 17 into the chord, for example by means of a hammerblow, prior to the final pressing of the joint.It will be understood that the principles disclosed in this specification can be appliedto connector plates and connector plate joints in wooden structures in many waysother than those given by way of example.:~-v-.7.--—~. 4 » .. 1, :‘-r.*..uu.....6.../.-._..' ~.,,.. ._ ,,zPE;r4.au ’

Claims (10)

CLAIMS:
1. A method of forming a joint between a first wooden member and a second wooden member employing a connector plate, said connector plate comprising a metal plate from which has been struck a pattern of projecting teeth which are driven into respective wooden members to effect a permanent joint between said members, said pattern of teeth including a first region of the plate, being the region of the connector plate which is intended for engagement with one of said members and a second region of the plate, being the region of the connector plate which is intended for engagement with a second of said members, wherein at least one further tooth provided in said first region is longer than the remainder of the teeth in that region and longer than the teeth in said second region, said method comprising the steps of:
(a) attaching said plate to said first member by penetration of the first member with said at least one further tooth to a depth which does not require the penetration of the first member by the remaining teeth in said first region, (b) locating the first and second members in the relative positions in which they are to be joined, and (c) causing the penetration of said first and second members by the remaining teeth of said first region and the teeth of said second region.
2. A method according to claim 1, in which a connector plate is employed on each side of the joint, the first region of each plate being attached to the first member.
3. A method of forming a joint between a first wooden member and a second wooden member employing a connector plate, said connector plate comprising a metal plate from which has been struck a pattern of projecting teeth which are driven into respective wooden members to effect a permanent joint between said members, said pattern of teeth including a first region of the plate, being the region of the connector plate which is intended for engagement with one of said members and a second region of the plate, being the region of the connector plate which is intended for engagement with a second of said members, wherein at least one further tooth provided in said first region is longer than the remainder of the teeth in that region and longer than the teeth in said second region, and in which at least one additional tooth is provided in said second region having a length which is intermediate the length of said further teeth in said first region and the remainder of the teeth in said second region, said method comprising the steps of:
(a) attaching said plate to said first member by the penetration of the first member with said at least one further tooth in said first region to a depth which does not require the penetration of the first member by the remaining teeth in said first region, (b) locating the first and second members in the relative positions in which they are to be joined, (c) attaching said plate to said second member by the penetration of the second member with said at least one additional tooth of intermediate length in said second region to a depth which does not require the penetration of the second member by the remaining teeth in said second region, and (d) causing the penetration of said first and second members by the remaining teeth of said first region and the remaining teeth of said second region.
4. A method according to claim 3, in which a connector plate is employed on each side of the joint, the first region of each plate being attached to the first member.
5. A structure for use in manufacturing wooden structures, such as roofs and floors, said structure comprising:
a first wooden member;
a second wooden member;
a connector plate forming a permanent joint between said first wooden member and said second wooden member, said connector plate comprising a metal plate having a pattern of projecting teeth, which are driven into respective portions of said first wooden member and said second wooden member for effecting said permanent joint between said first wooden member and said second wooden member, said pattern of projecting teeth including a first region of said connector plate being in a region of said connector plate which engages said first wooden member and a second region of said connector plate being in a region of said connector plate which engages said second wooden member such that engagement of said Pattern of protecting teeth with respective said first wooden member and said second wooden member effects said permanent joint; and, at least one further tooth is provided in said first region of said connector plate which is longer than other teeth in said first region and longer than said pattern of projecting teeth in said second region of said connector plate.
6. The structure for use in manufacturing wooden structures according to claim 5, wherein said connector plate includes a plurality of said further teeth.
7. The structure for use in manufacturing wooden structures according to claim 6, wherein a portion of said further teeth are located in a part of said first region of said connector plate which is remote from said second region, and a portion of said further teeth are located in a part of said first region which is adjacent said second region.
8. The structure for use in manufacturing wooden structures according to claim 5, comprising at least two of said connector plates, with at least one of said connector plates being utilized on each side of said permanent joint, said first region of each of said connector plates being attached to said first wooden member.
9. A structure for use in manufacturing wooden structures, such as roofs and floors, said structure comprising:
a first wooden member;
a second wooden member;
a connector plate forming a permanent joint between said first wooden member and said second wooden member, said connector plate comprising a metal plate having a pattern of projecting teeth, which are driven into respective portions of said first wooden member and said second wooden member for effecting said permanent joint between said first wooden member and said second wooden member, said pattern of projecting teeth including a first region of said connector plate being in a region of said connector plate which engages said first wooden member and a second region of said connector plate being in a region of said connector plate which engages said second wooden member;

at least one further tooth is provided in said first region of said connector plate which is longer than other teeth in said first region and longer than said pattern of projecting teeth in said second region of said connector plate; and, at least one additional tooth in said second region of said connector plate, said at least one additional tooth having a length which is intermediate the length of said at least one further tooth in said first region of said connector plate and a remainder of said pattern of projecting teeth in said second region of said connector plate.
10. The structure for use in manufacturing wooden structures according to claim 9, wherein said connector plate includes a plurality of said additional teeth.
CA002264127A 1996-08-28 1997-08-22 Connector plate and method of assembly Expired - Fee Related CA2264127C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPO1934A AUPO193496A0 (en) 1996-08-28 1996-08-28 Connector plate and method of assembly
AUPO1934 1996-08-28
PCT/AU1997/000541 WO1998009029A1 (en) 1996-08-28 1997-08-22 Connector plate and method of assembly

Publications (2)

Publication Number Publication Date
CA2264127A1 CA2264127A1 (en) 1998-03-05
CA2264127C true CA2264127C (en) 2007-02-27

Family

ID=3796247

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002264127A Expired - Fee Related CA2264127C (en) 1996-08-28 1997-08-22 Connector plate and method of assembly

Country Status (6)

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US (1) US6299378B1 (en)
AU (1) AUPO193496A0 (en)
CA (1) CA2264127C (en)
GB (1) GB2332031B (en)
NZ (1) NZ334413A (en)
WO (1) WO1998009029A1 (en)

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RU2169239C1 (en) * 1999-12-20 2001-06-20 Кутуев Сергей Булатович Joining member for wood structures
US6457292B1 (en) * 2000-05-01 2002-10-01 Jan Vrana Composite structural member
US20030228204A1 (en) * 2002-06-11 2003-12-11 Philip Bear Connector plate
AU2002952898A0 (en) * 2002-11-22 2002-12-12 Tec-Truss Holdings Pty Ltd Composite beams
AU2004201369B2 (en) * 2004-03-31 2007-12-13 Mitek Holdings, Inc. Building framework, method for making the same and components used in the framework
US7704170B2 (en) * 2006-05-12 2010-04-27 Sop Services, Inc. Four piece table tennis table having a stabilized joint
US7748190B1 (en) * 2006-10-02 2010-07-06 Thomas Loper Cleat
US20090223147A1 (en) * 2008-03-07 2009-09-10 Leo Spignesi Drainage System For A Floor
US20100024345A1 (en) * 2008-07-31 2010-02-04 Illinois Tool Works Inc. Truss Member Transportation System
US8478436B2 (en) * 2008-07-31 2013-07-02 Illinois Tool Works Inc. Apparatus, method and computer program product for providing automated truss assembly
MY147002A (en) * 2008-12-19 2012-10-15 Wong Chiang Heng Nail-plated composite structural system
US8281526B2 (en) * 2010-05-04 2012-10-09 Mpi Concepts, Inc. Stairway tread and riser assembly
US20120261535A1 (en) * 2011-04-13 2012-10-18 Joshua Blake Non-penetrating mount for an antenna
US9234350B1 (en) 2013-12-06 2016-01-12 Jack Walters & Sons, Corp. System and method of constructing a composite assembly
US9719257B2 (en) 2013-12-06 2017-08-01 Jack Walters & Sons, Corp. Friction fit composite column
US9528265B1 (en) * 2013-12-06 2016-12-27 Jack Walters & Sons, Corp. System and method of constructing a composite assembly
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US10309100B2 (en) 2016-12-09 2019-06-04 Owens Corning Intellectual Capital, Llc Mullion cover hanger and curtain wall insulation system incorporating the same
CN107254937B (en) * 2017-08-07 2019-07-12 北京工业大学 A kind of assembled energy consumption girder connection of built-in X-shaped low-yield structural steel connecting member
US10443240B2 (en) 2017-10-02 2019-10-15 Jack Walters & Son, Corp. Reinforced composite column
USD848253S1 (en) * 2018-02-05 2019-05-14 James Hardie Technology Limited Fastening device
US10975571B1 (en) * 2020-04-06 2021-04-13 Dragomir Smoljo Truss plates for joining members
IT202000025540A1 (en) * 2020-10-28 2022-04-28 Rotho Blaas S R L Ovvero Rotho Blaas Gmbh METHOD FOR CONNECTION USING A CONNECTING PLATE FOR WOODEN CONSTRUCTION ELEMENTS WITH A LAYER OF INSULATION MATERIAL IN PARTICULAR ACOUSTIC AND PLATE USED FOR THIS CONNECTION

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Also Published As

Publication number Publication date
GB9903483D0 (en) 1999-04-07
GB2332031B (en) 2000-10-25
US6299378B1 (en) 2001-10-09
NZ334413A (en) 2000-10-27
GB2332031A (en) 1999-06-09
WO1998009029A1 (en) 1998-03-05
CA2264127A1 (en) 1998-03-05
AUPO193496A0 (en) 1996-09-19

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