US1724519A - Joint for flanged steel beams - Google Patents

Description

Aug. 13, 1929. E. SCHELLEWALD 1,724,519

JOINT FOR FLANGE) STEEL BEAMS Filed April 26, 1926 2 Sheets-Sheet 1 I11 V81: 6-01 Eda card .Schel-le Wald Ger JOINT FOR FLANGED STEEL BEAMS Filed April 26, 1926 4 I 2 sneets-sheet' '2 I22 Vezzzfor:

Eduard Sahel Zen 01d.

[09PM f6 .flttb rwey Patented Aug. 13, 1929.

EDUABD SCHELLEWALD, OF DORTMUND, GERMANY.

JOINT FOR FLANGE-D STEEL BEAMS.

Application filed April 26, 1926, Serial No.

My invention relates to improvements in joints for flanged steel beams, and the object of the improvements is to provide a joint which can be made at low cost, and which has great strength. With this ob ect in view my invention consists in bending the flanges or other portions of the beams at the ends to be jointed so as to produce plane end portions fitting on each other and adapted to be fixed to each other by rivets, screwbolts or welding.

For the purpose of explaining the inven tion I have illustrated, in the accompanying drawing, a joint of a flanged beam such as is now constructed, and several examples of joints made according to my invention. In said drawing,

Fig. 1, is an elevation showing the jointof two I-beams,

Fig. 2, is a top-plan view of Fig. 1,

Fig. 8, is a sectional elevation taken on the line 3-8 of Fig. 1,

Fig. 4, is an elevation showing the endof an Lbeam having the flanges at one side bent upwardly to provide a plane end portion,

Fig. 5, is a top-plan view of Fig. 4,

Fig. 6, is a sectional elevation taken on the line 66 of Fig. 4,

Fig. 7, is a sectional elevation taken on the line 7-7 of Fig. 4,

Fig. 8, is an elevation showing the end of a Z-beam having one of its flanges bent upwardly at its end to form with the web portion a plane surface,

Fig. 9, is a top-plan view of Fig. 8,

Figs. 10 and 11, are sectional elevations taken respectively on the lines 10-10 and 11-11 of Fig. 8,

Fig. 12, is an elevation showing the end of a channel bar having its flanges bent outwardly at one of its ends,

Fig. 13, is a top-plan view of Fig. 12,

Figs. 14 and 15, are sectional elevations taken respectively on the lines 1414 and 15-15 of Fig. 12,

Fig. 16, is an elevation similar to the one shown in Fig. 12 and showing the end of a T-bar,

Fig. 17, is a top-plan view of Fig. 16,

Figs. 18 and 19, are sectional elevations taken respectively on the lines 1818 and 19-19 of Fig. 16,

Fig. 20, is an elevation showing the joint 104,764, and in Germany April 27, 1925.

of two I-beams of the construction shown in Figs. 4 to; 7,

Fig. 21, is a top-plan view of Fig. 20, and

Figs. 22 and 23, are respectively an elevation and a top-plan view showing a joint of two Z-beams of the construction shown in Figs. 8 to 11.

In Figs. 1 to3 I have shown the joint of an I-beam such as is now ordinarily constructed. As shown in the said figures the beams a, a are jointed. to each other by means of plates 5 5 b riveted to the flanges and the web of'the I-beams. As appears from Fig. 3, the I-beams are entirely separated from each other at their ends, the strain being transmitted through the plates 5 b 6 As appears from Fig. 3 eight plates are needed for making the joint, and the said plates havethree different dimensions. Further, a large number of rivets or screw-bolts or welded seams are required. Therefore, the joint can be made only at high cost. Further, the joint is objectionable, and more particularly in case of bars of small size, because the rivets and screwbolts or the welded seams cannot always be readily applied by reason of the limited space.

In my improved construction the said objections are obviated, and with this object in view the joint is made by bending certain flanges or other parts of the beams or bars so as to produce plane surfaces and placing the said plane surfaces upon each other, and fixing the parts together by means of rivets, screw-bolts or welding.

In Figs. 4 to 7 I have shown an I-beam having a part of the flanges bent outwardly at one of its ends so as to produce a plane surface. As shown, the flanges 0 0 located at one side of the web at are bent outw wardly at the end of the beam so as to produce with the web d a plane surface, while the flanges 0 0 located at the opposite side of the web cl remain in their normal positions. As appears from Figs. 20 and 21, the ends of the I-beams to be jointed are placed with their plane ends upon each other, and they are fixed to each other by means of rivets 6. It will be understood that my improved joint may be manufactured at low cost and that it has a high strength.

In Figs. 8 to 11 I have shown a Z-beam In Figs. 12 to 15 I have shown a channel bar having both of its flanges g bent outwardly at its end and into the plane of the web it. The joint of two channel bars is made by placing the same with their flat ends upon each other and connecting the said ends by means of rivets or the like, as has been shown in Fig. 13.

Figs. 16 to 19 show a modification in which a T-bar has one of its flanges 2' bent outwardly and into the plane of the web j, the other flange i being unaltered. The joint of two T-bars is made by placing the same with their flat ends upon each other and connecting the same to each other by rivets, as has been indicated in Fig. 17 showing one of the beams in full lines and the other one in dotted lines.

From the foregoing description it will be understood that the joint can be made at low cost, and that comparatively little work is needed, which is particularly important where the joint is to be made away from the work shop and on the field. Further, the joint can readily be made because there is much room for applying the rivets or screwbolts to the beams.

While in describing the invention refer ence has been made to particular examples embodying the same I wish it to be understood that my invention is not limited to the constructions shown in the drawing.

I claim:

1. A structure capable of taking up bending stresses, comprising flanged beams disposed in alignment and with their ends overlapping, said beams having the parts of the flanges interfering with the overlapping bent outwardly and into the planes of the web portions.

2. A structure capable of taking up bending stresses, comprising flanged beams disposed in alignment and with their ends overlapping, said beams having the parts of the flanges interfering with the overlapping bent outwardly and into the planes of the web portions, one of said beams being formed at its end with a flange directed outwardly and away from its web.

3. A structure capable of taking up bending stresses, comprising flanged beams disposed in alignment and with their ends overlapping, said beams having the parts of the flanges interfering with the overlapping bent outwardly and into the planes of the web portions and provided at their ends with flanges directed outwardly and away from their webs.

In testimony whereof I have signed my name to this specification.

EDUARD SCHELLEWALD.

Images