US2982055A - Prefabricated sheet metal truss and fastening means for two sheet metal structural members - Google Patents

Prefabricated sheet metal truss and fastening means for two sheet metal structural members Download PDF

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US2982055A
US2982055A US467774A US46777454A US2982055A US 2982055 A US2982055 A US 2982055A US 467774 A US467774 A US 467774A US 46777454 A US46777454 A US 46777454A US 2982055 A US2982055 A US 2982055A
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truss
chord
top
clip
sheet metal
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Harold D Thompson
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Modular Buildings Inc
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/11Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with non-parallel upper and lower edges, e.g. roof trusses
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486Truss like structures composed of separate truss elements
    • E04C2003/0491Truss like structures composed of separate truss elements the truss elements being located in one single surface or in several parallel surfaces

Description

ay 1961 H. D. THOMPSON PREFABRICATED SHEET METAL TRUSS AND FASTENING MEANS 'FOR TWO 'ISHEET METAL STRUCTURAL MEMBERS .2 Sheets-Sheet 1 Filed NOV. 9. 1954 May2, 1961 H. D. THOMPSON 2,982,055

. PREFABRICATED "SHEET 'METAL TRUSS AND FASTENING MEANS FOR Two SHEET METAL STRUCTURAL MEMBERS Filed Nov. 9. 1954 2 Sheets-Sheet 2 Hora/a ..fl Thom 0:00

INVENTOR.

U ted States Patent PREFABRICATED SHEET METAL TRUSS AND FASTEMNG MEANS FOR TWO SHEET METAL STRUCTURAL MEMBERS Harold D. Thompson, Houston, Tex., assignor, by mesne assignments, to Modular Buildings, Inc., Houston, Tex.

This invention relates to a means for transmitting a load between two sheet metal structural members and more particularly to a prefabricated truss of sheet metal structural members which may be quickly and easily assembled by unskilled labor. In one important aspect, it relates to a fastening means for transmitting the longitudinal load from a top chord to the bottom chord of a prefabricated sheet metal truss.

The recent trend in home building has been toward factory prefabrication of as many elements of the home as possible to reduce costs. The roof truss has received its share of attention, but the most that has usually been done is to prefabricate and completely assemble each truss at the factory and ship the assembled truss to location. Where the attempt has been made to ship the truss sheetKmetal structural members for the component elements of a roof truss. These efiiorts have been unsuccessful largely due to the lack of a suitable joint between the top chords and the bottom chord of the truss as sheet metal screws, bolts and the like tend to tear out of the thin walls of the sheet metal members under the roof load.

It is an object of this invention to provide a prefabricated truss of sheet metal structural members which may quickly and easily be assembled by unskilled labor with a minimum number of bolts, screws or the like.

Another object is to provide a prefabricated truss of sheet metal structural members which may be nestled together for shipment in a compact bundle, and quickly and easily assembled on location to form a truss.

Another object is to provide a connection between two sheet metal structural members in which there is a large area abutment contact through which the load on one member may be transmitted to the other member.

Another object is to provide a connection between a top chord and the bottom chord of a sheet metal truss in which there is a large area abutment contact through which the longitudinal load imposed on the top chord may be transmitted to the bottom chord of the truss.

- Another object is to provide a truss made of sheet metal members which may be nestled together for shipment in which a large area abutment contact is provided between the top chords and the bottom chord when the truss is assembled and the abutment parts carried by the top and bottom chords do not interfere with the bottom chord nestling with the top chords when the latter are exended in a straight line.

Another object is to provide a truss of sheet metal channels in which the flange portions of the channels are held against buckling at the connection between each top chord and the bottom chord. V

.Otherhbjects, features and advantages of this invention Patented May 2, 1961 will appear from a perusal of the drawings, the written specification and the claims.

In the drawings wherein there is shown by way of illustration one embodiment of this invention and wherein like reference numerals indicate like parts:

Fig. 1 is a view in side elevation of a sheet metal truss constructed in accordance with this invention and resting upon bearing walls;

Fig. 2 is a view in side elevation of the principal components of the truss of Fig. 1 after they have been formed but before being bent to the proper shape and assembled;

Fig. 3 is a view in cross section of the several components of the truss as shown in Fig. 2, with the components of the truss nestled together for shipment;

Fig. 4 is a view in vertical cross section taken along the line 44 of Fig. 1;

Fig. 5 is an exploded isometric view on an enlarged scale of the abutment connection between the top and bottom chords;

Fig. 6 is an isometric view on a still further enlarged scale of the abutment connection between the top and bottom chords with parts broken away to illustrate details of the connection;

Fig. 7 is a fragmentary view in side elevation on an enlarged scale of a portion of the truss of Fig. 1, illustrating the connection between the diagonal bracing and the bottom chord, and the indentations in the flange portion of the bottom chord to secure a wood filler within the bottom chord;

Fig. 8 is a cross-sectional view through a modified form of bottom chord; and

Fig. '9 is a fragmentary side view on an enlarged scale of the truss of Fig. 1 at the peak of the truss with parts broken away to illustrate details of construction.

The truss of this invention is preferably made up of channel-shaped structural members formed from sheet metal, such as, for example, 16-gauge steel. Three basic channel sizes are employed with the top chords formed from the larger channel size member, the diagonal bracing, and the pressure plate and clip of the connection between the top and bottom chords formed of the intermediate size channel, and the bottom chord formed of the smaller size channel. Preferably, the channel sizes are such that the smaller channel will nestle snugly within the intermediate channel and the intermediate channel will nestle snugly within the larger channel. This preferred sizing will permit the unassembled truss to be shipped as a compact unit, and when the truss is assembled will result in a more rigid structure. The stop and pressure clips. are secured to the bottom and top 7 chords respectively over a large area which will transmit the expected loads, as by welding, and are arranged to have end faces in abutment to transmit the longitudinal load on the top chord to the bottom chord. This arrangement permits the connection between the top and bottom chords of the end of the truss to be made with a single bolt and vastly simplifies assembling the truss.

Referring now more in detail to the drawings, top chords 10 and 11 are fabricated from a length of the large size sheet metal channel. Other types of structural beams might be used, but a beam including a web and channels arranged in U form, at least in the area where the pressure clip is attached to the chord, is preferred so that the top and bottom chords and their respective clips maynestle together for additional strength. Referring to Fig. 2, a pie-shaped wedge 12 is shown to be cut from the flange portions of the large size channel at its mid' each other when the truss is assembled, as best shown in Fig. 9. This angle will, of course, be determined by the pitch of the truss. Spaced along the flange portions of chords and 11 are holes 13, 14, 15, 16, 17 and 18. These holes may be pre-stamped in the chords and receives bolts during the, assembling of the truss as will more fully appear hereinafter.

Top chords 10 and 11 each carry respectively pressure clips 19 and 20 which transmit the longitudinal load on the top chords to the bottom chord. These clips are identical as are the stop clips with which they cooperate and the description will be directed to clip 20 with the understanding that it applies as well to clip 19 and the connection at the other end of the truss. These clips are short sections of intermediate size channel-shaped members and are secured to the respective top chords in a partially nestled relation therewith as by welding the lower edge of the flanges of the top chords to the outer wall of the pressure clip, which underlies the flange portion of the top chord as at 22. Inasmuch as weld 22 transmits substantially all of the longitudinal load from the top chord to the pressure clip, the weld should extend over an area sufiicient to transmit the expected load on the top chord and pressure clip 20 should have a length dimension sufiicient to permit such a weld.

The end face 21 of pressure clip 20 closest to the adjacent end of the truss or most remote from the center of the truss provides an abutment member for engagement with an abutment member on stop clip 23 carried by bottom chord 24. The abutment surface 21a provided by the end faces of the flanges of the pressure clip 20 preferably extends in a direction relative to the length dimensionof the top and bottom chords which will tend to draw the bottom chord more snugly into pressure clip 20. As best shown in Fig. 6, this surface may be at a right angle to the length dimension of bottom chord 24 and to the length dimension of the clips. With this angle there is a slight wedge action between abutment surface 21a and the complementary surface 23a of stop clip 23 when the truss is loaded, which wedge action tends to draw the bottom chord more snugly into pressure clip 20.

Clip 20 preferably extends in a direction relative'to the length dimension of the top chord which will snugly receive bottom chord 24 and provide a large area contact therewith to hold the bottom chord against upward movement relative to the top chord. As shown in Fig. 6, this direction of extension of clip 20 is preferably parallel to the direction of bottom chord 24 when the truss is assembled and the entire web of the pressure clip is in abutment with the web of the bottom chord.

Pressure clip 20 may be provided with laterally extending ears 25 which provide a ready means of securing the pressure clip to the plate 26 of bearing walls 27 as by bolts or the like. The bottom surface of ears 25 lies substantially in the same plane as the lower edge of bottom chord 24 when the bottom chord is snugly received in pressure plate 20. Thus, when cars 25 are secured to plates 26, the plates together with pressure clip 20 comprise a box which completely surrounds bottom chord 24. When ears 25 are tied to plate 26, the fastening assembly is strengthened against outward buckling or spreading of the flange portions of the clips and bottom chord which might permit the clips to slide over each other. This latter feature while a preferred embodiment is not essential and, if desired, ears 25 may be omitted and the truss secured to hearing walls 27 in any suitable manner.

Bottom chord 24 is provided at each of its ends with a stop clip 23 which cooperates with pressure clips 20 as heretofore pointed out to provide a fastening assembly between the top and bottom chords. Stop clip 23 is fashioned from a channel-shaped sheet metal member of the same intermediate channel size as pressure clip 20 so that the end faces of the two clips will match when in abutment. The stop clip may be secured to bottom chord 24 in any desired manner such as by weld 28. As partially shown in Figs. 5 and 6, weld 28 extends along the entire outboard end face of stop clip 23 to attach the stop clip to the bottom chord over the large area necessitated by the thin gauge steel of the bottom chord and stop part. As in the case of the pressure clip, the area of weld 28 should be such as will transmit the expected load on the top chord.

As best shown in Figs. 1 and 2, the stop clips 23 should be spaced along bottom chord 24 at positions which, with chords 10 and 11 extending in a single direction, will permit the stop clips to bev nestled within the top chords inboard of pressure clips 19. and 20 for transport. At the same time abutment faces 23a of the stop clips should be spaced apart a sufficient distance to engage abutment faces 21a of the pressure clips when the chords are in their assembled positions as shown in Fig. 1. The abutting end faces 23a of the flanges of stop clip 23 should extend at right angles to the length dimension of the clip so as to abut edges 21a of pressure clip 20 along their entire length.

A means for selectively fastening the bottom chord to the top chord is provided to hold the truss in assembled form. This means may include a hole 29 which extends through each stop clip 23 and bottom chord 24 and is in register with hole 18 of chord 11 when the chords are in assembled position. A bolt 30 is received in these registering holes and maintains the truss in assembled position. It should be pointed out that there is no substantial amount of stress transmitted by bolt 30 when the truss is loaded as the load is transmitted to bottom chord 24 through the abutment surfaces 21 and 23a.

A wood filler 31 is nestled within bottom chord 24 and extends the entire length thereof. Filler 31 is maintained in place by indentions 32 in the flange portions of bottom chord 24. These indentions extend into filler 31 and secure the filler within the bottom chord. Filler 31 provides a base to which a ceiling may be nailed and additionally prevents inward buckling of any portion of the fastening assembly. Thus, it will be seen that filler 31 cooperates with cars 25 and bolt 30 to eliminate any possibility of buckling of clips 20 or 23 and the consequent disengagement of abutment surfaces 21 and 23a.

Referring to Fig. 8, there is shown a modified form of bottom chord 24a in which the channel-shaped chord is closed by a sheet metal flange 24b which extends outboard of the channel-shaped portion of the chord and provides an anchor for splines when the ceiling is to be secured to the truss by keepers. If desired, the ceiling may be nailed to flange 24b with metal nails. This flange 241) will also serve to reinforce the bottom chord and prevent inward buckling of the side walls of the chord.

As best shown in Fig. 1, intermediate bracing is provided between bottom chord 24 and each of top chords 10 and 11. The bracing may comprise diagonal struts arranged in the shape of a W as illustrated. Preferably,

the diagonal bracing is formed of a section of intermediate size channel 33 with the side flanges of the section of channel 33 cut and punched as shown in Fig. 2 to permit the channel member to be bent in the form of a W as shown in Fig. 1.

Bending of channel member 33 is facilitated by the removal of a pie-shaped wedge 34 of material from each of the flanges of member 33 at substantially the mid point of the member. This permits member 33 to be bent downwardly from the apex of the pie-shaped wedge 34 to form diagonal struts 35 and 36. The diagonal braces 35 and 36 are provided with apertures 37 and 38 which with the diagonal braces in the position shown in Fig. l are in register with holes 15 and 16 of top chords 10 and 11, respectively. 'As best shown in Fig. 9, a

triangular fille r 39 of wood or the like is received within thechannel of members'35 and '36 andpreventsinward cut 34 and one end of member 33, spaced transverse slits 42 and 43 are made in the flange portions of member 33 to define ashort section 44 about which diagonal 35 and diagonal ,36 may be bent. In other words, section 44 may be bent upwardly relative to diagonal 35 so as' to extend parallel to bottom chord 24 as best shown in Fig. l and short diagonal strut 36 may be bent upwardly relative to section 44 to form one short leg of the W truss. Section 44 is provided with an aperture 45 which with the W bracing in theposition shown in Fig. l is in register. with a hole 46 in the flange portions of bottom chord 24 and provides a means of securing the short section 44 to the bottom chord with a single bolt 47. Thus, the two diagonal struts 35 and 36 will be secured to the bottom chord with but a single bolt. The other end of channel member 33 is provided with similar transverse slits and apertures to permit diagonal struts 48 and 36 to be secured to bottom chord 24 on the other side of the truss.

During transport between the factory and the building with which the truss is to be used, member 33 will be a single piece extending in a single direction as shown in Fig. 2 and will snugly nestle in the channel member forming the top chords and will snugly receive bottom chord 24 as illustratedin Fig. 3. If desired, the W-shaped After the unassembled truss is transported to location, A

it is quickly and easily assembled with but eight bolts. After the top and bottom chords have been assembled as explained hereinabove, the member 33 is bent in the shape of a W as shown in Fig. 1 and is secured to the chords and bottom chord to complete the truss.

When the pitch of the truss is such that lower chord 24 will not clear pressure clips 19 and 20 in packaging the truss, the top chords may be severed at wedge 12 to permit nestling. The angular relationship of the pressure clips and top chords will depend upon the pitch of the truss and where it is necessary to sever the top chords to permit nestling, it will usually be found that the lower chord can extend into the space between the web of the chord and the web of the pressure clip. Thus, the top chords may be jacked over the bottom chord until the ends of the lower chord are wedged between the top chords and pressure clips. It will then only be necessary to temporarily secure the ends of the top chords which terminate in wedge 12 to the lower chord to secure the "From the foregoing it will be seen that this invention is one well adapted to attain all of the ends and objects hereinabove set forth, together with other advantages which are obvious and which are inherent to the apparatus'; a 5

It will be understood that certain features and subcombinations are of utility and may be employed without reference. to other features andsubcombinations. This is contemplated by and is within the scope of the claims. As many possible embodiments may be made of the I invention without departing from the scope thereof, it

is to be understood that all matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

The invention having been described, what is claimed is:

1. A truss comprising, a top and bottom chord each formedfrom sheet metal structural members with the top chord formed from a member comprising a web and flange portions arranged to form a U in cross section, said chords fastened together by an assembly comprising, a U-shaped pressure clip at least partially nestled in and attached to the top chord over a substantial area which will transmit the expected longitudinal load on the top chord to the clip, said clip having an abutment face on the side of the clip closest to the end of the truss adjacent the fastening assembly, a stop clip at least partially nestled in the top chord and having an abutment face in engagement with the abutment face on the pressure clip, said stop clip attached to the bottom chord over a substantial area which will transmit the expected longitudinal load on the top chord from the stop clip to the bottom chord, and means releasably securing the chords to each other to hold the truss in assembled form without transmitting a substantial portion of the load from the top to the bottom chord.

2. A truss comprising, a top and bottom chord each formed from sheet metal structural members with the top chord formed from a member comprising a web and flange portions arranged to form a U in cross section, said chords fastened together by an assembly comprising,

. a U-shaped pressure clip at least partially nestled in and components of the truss in nestled relationship for shipping. As a further alternative means of shipping, it is contemplated that the top chords may be severed and the bottom chord formed in two pieces permitting the truss to be made up in two packages for shipping.

From the above it will be seen that all the ends and objects of this invention have been accomplished. There has been provided a truss made of sheet metal in which the principal points of load transfer between the top and bottom chords are provided with abutment fastening assemblies which transmit the load imposed upon the truss without the use of a large number of bolts or screws as would be necessary in'the absence of the abutment assembly. There has also been provided a truss which when disassembled may be packaged in a small compact bundle for shipment and which may quickly and easily be assembled on the job by unskilled labor.

attached to the top chord over a substantial area which will transmit-the expected longitudinal load on the top chord to'the clip', said clip having an abutment face on the side of the clip closest to the end of the truss adjacent the fastening assembly, said bottom chord nestled in the pressure clip and held against upward movement relative tothe top chord by the clip, a stop clip at least partially nestled in the top chord and having an abutment face in engagement with the abutment face on the pressure clip, said stop clip received about and attached to the bottom chord over a substantial area which will transmit the expected longitudinal load on the top chord from the stop clip to the bottom chord, and means releasably securing the chords to each other to hold the truss in assembled form without transmitting a substantial portion of the load from the top to the bottom chord.

3. A truss comprising, a top and bottom chord each formed from sheet metal structural members comprising channels sized to permit the bottom chord to nestle within the top chord, said chords fastened together by an assembly comprising, a pressure clip formed of sheet metal channel of a cross-sectional size intermediate that of the top and bottom chords, said clip at least partially nestled in and attached to the top chord over a substantial area which will transmit the expected longitudinal load on the top chord to the clip with the clip extending parallel to the length dimension of the bottom chord, a stop clip formed of sheet metal channel of the same channel size as the pressure clip, said stop clip received over the bottom chord and attached thereto over a substantial area which will transmit the expected longitudinal load on the top chord from the stop clip to the bottom chord with an end face of the stop clip in abutment with the end face of the pressure clip closest to the end of the assaoss truss adjacent the fastening assembly, and, means releas ably securing the bottom chord in nestled position in the pressure, clip with the pressure clip and stop clip in end to end abutment whereby the load on the chordwill' be transmitted to the bottom chord through the abutting clips.

4. A truss comprising, a top and bottom chord each formed from sheet metal structural members. comprising channels with the bottom chord of a slightly smaller channcl size than the top chord, said chords fastened together by an assembly comprising, a pressure clip formed of sheet metal channel of a channel size intermediate the size of the chords, said clip at least partially nestled in.

and attached to the top chord over an area which will transmit the expected longitudinal load on the top chord to the clip, said clip extending parallel to the length dimension of the bottom chord which is nestled in the clip to. provide a large area contact between the web of the clip and the bottom chord to prevent upward movement of the bottom chord relative to the top chord, a stop clip formed of sheet metal channel of the same channel size as the pressure clip, said stop clip snugly received over the bottom chord in a position to have an end face abut the end face of the pressure clip most remote from the top of the truss and attached to the bottom chord over an area which will transmit the expected longitudinal load on the top chord to the bottom chord, and means releasably securing the bottom chord in nestled position in the pressure clip with the pressure clip and stop clip in end to end abutment.

5. The truss of claim 4 wherein means including the securing means holds the flange portion of the two clips against outward buckling, and means are provided to prevent inward buckling of the flange portions of the two clips.

6. A truss comprising, a top and bottom chord each formed from sheet metal structural members comprising a web and flange portions arranged to form a U in cross section, said chords fastened. together by an assembly comprising, a U-shaped pressure clip at least partially nestled in and attached to the top chord over a substantial area which will transmit the expected longitudinal load on the top chord to the clip, said clip having an abutment face on the side of the clip closest to the end of the truss adjacent the fastening assembly, said bottom chord nestled in the pressure clip and held against upward movement relative to the top chord by the clip, a U-shaped stop clip. carried by the bottom chord with the bottom chord nestled in the stop clip and the stop clip at least partially nestled in the top chord, said stop clip having an abutment face in engagement with the abutment face on the pressure clip and attached to the bottom chord over a substantial area which will transmit the expected longitudinal load on the top chord from the stop clip to the bottom chord, and means releasably securing the chordsto each other to hold the truss in assembled form without transmitting any substantial portion of the load from the top to the bottom chord.

. 7. The truss of claim 8 wherein the pressure clip extends parallel to the length dimension of the bottom chord to provide a large area contact with the bottom chord holding the bottom chord against upward movement relative to the top chord.

,8. A triangular truss comprising, two top chords of sheet metal channel connected together at the ends thereof intermediate the ends of the truss when the truss is assembled, bracing of sheet metal channel of a size to nestle within the top chords before the truss is assembled, a bottom chord of sheet metal channel sized to nestle within the top chords and bracing before the truss is assembled, means connectmg said bracing to said top and bottom chordswhen the truss is assembled and a fastening assembly for each of the top chords and the bottom chord of abutting clips of sheet metal channel, one of saidclips at least partially nestled in and carried by each top chord adjacent the ends of the truss and one received about and carried by the bottom chord adjacent each end outboard of and in abutment with the clips carried by the top chords, said clips of the same channel size as the bracing whereby with the two top chords extending along a line the bottom chord and bracing may be nestled within the top chords to form a compact package for shipment.

9. The truss of claim 8 wherein at least two braces are formed from a single length of sheet metal channel and at an intermediate point along the channel the flange portions of the channel are cut laterally at spaced points to facilitate bending of each end of the'channel about a short intermediate section when assembling the truss, said short section overlying the bottom chord and providing a means of securing the braces to the bottom chord when the truss is assembled.

10. A triangular truss comprising, a length of channelshaped sheet metal bent intermediate its ends to form the two top chords of the truss, a bottom chord formed of a length of channel-shaped sheet metal of slightly smaller channel size than the top chords, said bottom chord fastened to the two top chords at each end of the truss by an assembly comprising, a pressure clip formed of sheet metal channel of a channel size to be received over the bottom chord and to be nestled within the top chord, said pressure clip at least partially nestled in and welded to the top chord with the clip extending parallel to the length dimension of the bottom chord, a stop clip formed of sheet metal channel of the same channel size as the pressure clip, said stop clip received over the bottom chord and welded thereto in a position to have an end face abut the end face of the pressure clip most remote from the top of the truss, and means releasably securing the bottom chord in nestled position in the pressure clips with the pressure clips and stop clips in end to end abutment whereby the load on the top chord will be transmittedto the bottom chord through the abutting clips, bracing extending between the top chords and the bottom chord formed of sheet metal channel of the same channel size as said clips whereby before being assembled they will nestle in the top chord, at least two adjacent braces formed from a single member and bent into the desired angular relationship when the truss is assembled, said stop clips on the bottom chord spaced inboard of the pressure clips when the top chords are extended in a straight line whereby the bottom chord will nestle in the bracing and top chords for shipment.

References Cited in the file of this patent UNITED STATES PATENTS 593,185 Baird Nov. 9, 1897 958,752 Mackensen May 24, 1910 1,451,555 Schenstrom Apr. 10, 1923 1,973,882 Pratt Sept. 18, 1934 2,477,163 Barnett July 26, 1949 2,541,784 Shannon Feb. 13, 1951 2,642,825 McElhone et a1. June 23, 1953 2,692,795 Lander Oct. 26, 1954 12,722,901 Johnson et a1 Nov. 8, 1955 FOREIGN PATENTS 121,875 Great Britain 1919 241,846 Switzerland Aug. 16, 1946 OTHER REFERENCES American Builder, July 1954, pp. 50 and 51.

US467774A 1954-11-09 1954-11-09 Prefabricated sheet metal truss and fastening means for two sheet metal structural members Expired - Lifetime US2982055A (en)

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US4167090A (en) * 1978-04-26 1979-09-11 Sanford Arthur C Knock-down truss structure
US5152114A (en) * 1987-08-13 1992-10-06 El Barador Holdings Pty. Ltd. Building structures
US5970672A (en) * 1996-12-16 1999-10-26 Amisk Technologies Inc. Building system
US6047513A (en) * 1997-01-17 2000-04-11 Gibson; J.W. Steel construction system
EP1245751A1 (en) * 2001-03-26 2002-10-02 Severino Donà Truss
US20060123733A1 (en) * 2004-12-09 2006-06-15 Moody Donald R Roof truss
US7325362B1 (en) 2004-12-06 2008-02-05 David Rowland Steel roof truss system

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GB121875A (en) * 1918-03-13 1919-01-09 Gustave Robert Speaker Improvements in Trussed Roofs for Buildings and the like.
US1451555A (en) * 1920-10-11 1923-04-10 Schenstrom William Arc-welded truss
US1973882A (en) * 1929-09-16 1934-09-18 Walter M Pratt Roof truss
CH241846A (en) * 1945-03-27 1946-04-15 Cron Jean Roof construction made of wood.
US2477163A (en) * 1945-06-06 1949-07-26 George F Barnett Truss shoe
US2541784A (en) * 1946-06-22 1951-02-13 Nat Steel Corp Roof construction
US2722901A (en) * 1949-06-10 1955-11-08 Hugh B Johnson Roof structure
US2642825A (en) * 1951-11-01 1953-06-23 Copco Steel And Engineering Co Foldable and compactable truss and stud support
US2692795A (en) * 1953-01-07 1954-10-26 William F Long Demountable truck top frame

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3229333A (en) * 1962-10-15 1966-01-18 Albert J Hillesheim Building frame bracket
US4167090A (en) * 1978-04-26 1979-09-11 Sanford Arthur C Knock-down truss structure
US5152114A (en) * 1987-08-13 1992-10-06 El Barador Holdings Pty. Ltd. Building structures
US5970672A (en) * 1996-12-16 1999-10-26 Amisk Technologies Inc. Building system
US6047513A (en) * 1997-01-17 2000-04-11 Gibson; J.W. Steel construction system
EP1245751A1 (en) * 2001-03-26 2002-10-02 Severino Donà Truss
US8006461B2 (en) * 2003-12-09 2011-08-30 Nucon Steel Corporation Roof truss
US7735294B2 (en) * 2003-12-09 2010-06-15 Nucon Steel Corporation Roof truss
US20080295442A1 (en) * 2003-12-09 2008-12-04 Nucon Steel Corporation Roof truss
US20080295448A1 (en) * 2003-12-09 2008-12-04 Nucon Steel Corporation Roof truss
US7325362B1 (en) 2004-12-06 2008-02-05 David Rowland Steel roof truss system
US7409804B2 (en) * 2004-12-09 2008-08-12 Nucon Steel Corporation Roof truss
US20060123733A1 (en) * 2004-12-09 2006-06-15 Moody Donald R Roof truss

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