US1788183A - Trussed metal structure - Google Patents

Description

Jan. e, 1931. H, AS ES N 1,788,183

TRUSSED METAL STRUCTjURE Filed July 1929 A mu ll? J 4451 B Patented Jan. 6, 1931 UNITED STATES HANS J. ASLESON, F MINNEAPOLIS, MINNESOTA raussnn METAL s'raucruan Application 11125. July 8, 1929. Serial No. 376,815.

'My present invention relates to trussed steel or metal structures and relates particularly to improved means for connecting the diagonals o lacings' to the longitudinal membars of such trussed structures. The term truss structure is herein used in a broad sense to include structures usually specifically designated as building trusses, bridge trusses, trussed girders and beams and trussed to columns.

tion relates particularly to the improved means for connecting the lacings or diagonal members with the longitudinal members.

' It is a known fact that joints formed between truss-forming members and especially welded joints are not as strong in tension as they are in shear or compression. In accordance with my invention, the diagonals of the truss -are bent in zig-zag form and are provided at their apices with slots that adapt them to receive and embrace flanges of the longitudinal members. When the diagonals are thus applied to and lapped with the flanges of the longitudinal members, they are welded together at the lapped joints either electrically-or by the use of a torch and the accumulated metal of the welds are applied in such manner as to resist separation in shear. This gives the strongestkind of connection at the joints.

In the accompanying drawings, WhIOhillustrate the invention as applied to a truss of the type generally designated as a building truss and which is especially designed for use in garages or the like, like characters indicate like parts thr ghout the several views.

Referring to the gpawings:

Fig. 1 is a'view s owing the truss in side elevation and the parts of-the building vertical section; I

Fig. 2 is a transverse vertical section ,taken on the .line 2-2 of Fig. 1;

Fig. 3 is a fragmentary view showing a portion of the zigzag diagonal before it has been bent into zig-zag form but after the slot has been punched'therein to form a joint, lap;

Fig. 4 is a view in elevation showingone of the struts used in the truss illustrated;

Fig. 5 is a. fragmentaryv side elevation on a larger scale than in Fig.1 illustrating a struc- In all these "structures the inven-.

ture in which the zigzag diagonal is formed from an angle iron; an

Flg. 6 is a section takenpn the line 6-6 of bottom longitudinal members of the truss, v

both of which as shown in thisstructure are formed from T-beams with their flanges turned inward and welded together at 9. The separated intermediate portions of the longitudinal members 8 and 9 are trussed by a diagonal-forming member 10 that is bent zig-zag or with alternated V-shaped bends and projecting apices 11 that have slots 12 adapting the apices thereof'to receive'and embrace the inturned flanges ofsaid members 7 and 8. In the structure shown in Figs. 1 to 4, the diagonal-forming member 10 is formed from a normally flat steel bar and the slots 12 will preferably be punched there in before the member is bent into zig-zag I form. The lapped points of the several joints are then very firmly connected .by accumulated steel welded thereto as indicated at 13.

This welded material 13 it will be noted, is applied at the joints where-it is located on the inner sides of the angles 11 and so that they will resist in shear separation of the joints.

Wherever it is feasible, the entire diagonal member of the truss will be made of one piece bent into a zig-zag form stated,.but in some cases'the diagonal member can be made up of a plurality of members connected by welding or otherwise. The truss also preferably is provided with struts 14 which, in the structure illustrated in Figs. .1 to 4, inclusive, are formed from flat steel bars provided at their ends with notches 15 that embrace the inturned flanges of the members 7 and 8 and are connected thereto by welding.

-Where stiflest kind of diagonal member is desired, it can be made from angle bars 10" bent into zig-zag form and provided at its angles with slots 12 that embrace the flanges of the members 7 and 8. In bending the angle iron, it will naturally be flattened out at itsapices as indicated at 11. When Leo ' very strong truss.

tion broadly disclosed and claimed and thatit is capable of wide application and general utility in trussed metal structures. What I claim is:

i 1. A trussed metallic structure comprising longitudinal members and a diagonal reinforcing member, the. latter being formed with reversely bent angles and slotted at its apices to lap with portions of .said' longitudinal members and the interlapped portions of said angles being connected by metal applied to resist separation in shear, the said diago-.

nalmembers being formed from an angle bar material spread out or flattened at its apices where it embraces portions of said longitudinal members.

2. A trussed metallic structure comprisinglongitudinal members and adiagonal reinforcing member, the latter being formed with reversely bent angles and slotted at its apices to lap with portions of said longitudinal members-and the interlapped portions of said angles being connected by metal applied to resist separation in shear, said longitudinal members having inturned flanges and said lacing being formed from angle bar material flattened at its slotted apices where it emgraces the flanges of said longitudinal m'emers.

3. A fabricated steel structure comprising a longitudinal member, and a diagonal member, the latter being formed with a reversely' bent slotted angle interlappin with a portion of said longitudinal mem er, the interlapping portions of said two members being connected by metal welded thereto and arranged to resist separation in shear.

4. A trussed metallic structure comprising longitudinal members and diagonal reinforcying members, the latter being .formed with reversely bent angles the apices of which are longitudinally slotted between their side edges to la with portions of said longitudinal mem ers, said lapped portions being connected by metal applied to resist separation in shear.

5. The structure defined in claim 4 in further combination with -metallic' struts ap-' forcing, member.

6. A trussed metallic structure comprising flanged longitudinal members and a diagonal bers and to the apices of the angles of said reinforcing member.

In testimony whereof I aflix my signature.

HANS J. ASLESON.

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