US1563117A - Fabricated structural member - Google Patents

Description

' Nov. 24, 1925' ,563,117

J. E. TONN ELIER ET AL FABRICATED STiiUCTURAL MEMBER Filed April 2, 1924 gwmntow J 50%70/70 75 7/76/MQ Gearye 6. Feuc/vfi M Gamm Patented Nov. 24, 1925.

UNITED STATES F ICE.

PATENT F J'. EDMUND TONNELIER AND. GEORGE C. FEUCHT, OF PITTSBURGH, PENNSYLVANIA,

ASSIGNORS TO J' ONES & LAUGHLIN STEEL CORPORATION, OF PITTSBURGH, PENN- SYLVANIA, A CORPORATION OF PENNSYLVANIA.

FABRICATED STRUCTURAL MEMBER.

Application filed April 2,

To all whom it may concern:

Be it known that we, J. EDMUND Ton- NELIER and GEORGE C. FEUoH'r, citizens of the United States, residing inPittsburgh, in the county of Allegheny and State of Pennsylvania, have invented an Improvementin Fabricated Structural Members, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

Our'invention aims to strengthen and improve rolled structural members or shapes of open web or trussed form, and toenable such members to be readily and economically fabricated and utilized for building and other purposes.

In the accompanying drawings, wherein we have shown one embodiment of our invention for purposes of illustration,

Fig. 1 is a side View of a trussed web I- beam such as is suitable for floor beams, roof trusses and purlins, bridge girders, and other structural purposes;

Fig. 2 is an enlarged side view of one end of theibeam shown in Fig. 1;

Fig. 3 is a cross-section of the same on the line 3-3 in Fig. 2; and

Fig. 4 is a View similar to Fig. 2, showing a modified form of the invention.

The invention may be applied to lE-beams, channels, Z-sections, T-sections, H-sections, and other shapes with and without flanges, having trussed or open web portions formed integrally with the flanges or margins. In rolling such structural shapes the web p or tions which may be in the form of tie members) are most readily made of uniform character throughout their lengths. For example, the web tie members may be of similar shape and arrangement, whereby they are of equal strength and are equally spaced lengthwise of the shape. Such structural shapes, if loaded to their maximum carrying capacity, are likely to collapse at their ends where they are supported unless the ends are braced in such a manner as to reenforce the adjacent ties against direct thrust and transverse and longitudinal shear.

The particular embodiment of the invention selected for illustration herein and shown in the drawings comprises a principal member and'stifieners,more especially such as are adapted for reenforcing the ends of lattice-web structural shapes, although they 1924. erial No. 703,644.

may be applied to intermediate points. Other shapes and forms of stifieners are contemplated.

Referring particularly to Fig. 1, the invention is embodied in a trussed I-beam having flanges 12 connected by angularly disposed lattice or web members 13 formed integrally with the flanges by any suitable process of manufacture. Each end of'the beam is strengthened by securing thereto suitable stiffeners or reenforcement, such as the angle plates 14, which are preferably disposed on'opposite sides of the web members of the beam at its ends and substantially parallel to and between the flanges, preferably with their horizontal flanges or legs 15 lowermost. The angle bars illustrated in Fig. 2 have their outer end portionsv 11 substantially parallel to the flanges, and their inner end portions 16 are bent preferably to follow the first com lete downwardly and inwardly extending iagonal tie member to the lower flange, where they may be secured. Their inner ends may be turned up and secured to the upper flange, forming a vertical strut 17 across the end opening of the lattice work, as shown in Fig. 1. The preferred manner of securing shear plates to the web portions of the beam is by welding, although any suitable means for attaching the members rigidly together may be used.

The horizontal legs 15 of the angles 14 afl'ord wide supports for the ends of the beam and may be punched with holes 18 for securing them to the supporting structure by bolts, rivets or other usual standard forms of construction; and similarly the horizontal legs of the angles may be utilized to support minor portions of thefloor system or other parts of the structure. I

Any free endportions of incomplete tie members at the ends of the beam may advantageously be removed to avoid interference with portions of the supporting struc ture.

Either angle bars or other shapes, or flat plates, may be utilized for web strengthenmg members, and by disposing them over the web of the beam so as to span one or more complete panels the distribution of stresses in the web portions of the beam is made less severe upon the tie members.

tage is that the ends of the beam may be' cut off, or the web members and lower flange may be out out, as indicated in broken lines in the drawing, to reduce its len h or suit the conditions of use without wea ening the beam.

The invention is not restricted to the forms,.shapes, and dimensions of the members shown in the drawings, as it is obvious that it may be applied in various forms and shapes suitable to the uses for which it is adapted.

In the claims the term flange is used to indicate the upper and lower chord members of a truss-like beam or structural shape, whatever their form and however produced. What we claim as our invention and desire to secure by Letters Patent is: p

1. A rolled shape having a webcomprising integral, diagonally disposed tie members,- in combination with lengthwise extending braces secured to the shape adjacent to the upper ends of outer tie members, said braces having inwardly and downwardly extending portions secured to the shape adjacent to the lower ends of said tie members.

2. A rolledshape having a web comprising integral, diagonally disposed tie members, in combination with lengthwise extending braces secured to the shape adjacent to the upper ends of outer tie members, said braces having inwardly and downwardly extending portions secured to the shape adjacent to the lower ends of said tie members, and. upturned inner extremities secured to the upper flangemember of said shape.

3. A rolled shape having a web comprising integral, diagonally disposed tie members, in combination with lengthwise extending braces at its ends secured to the shape adjacent to the upper ends of the end tie members, said braces having inwardly and downwardly extending portions following the end tie members and secured to-the shape adjacent to the lower ends of said tie memand an open work web, and end braces secured thereto having horizontal portions extending inwardly along the up er flange and bent down to cross the mid e axis of the member with their lower ends secured to the shape adjacent to its lower flange, the inner extremities of said braces being turned up and secured to the shape adjacent to its upper flange.

6. A structural member consisting principally of a rolled shape having marginal flanges and a connecting open work web of uniform character throu out the length of the shape, the ends 0 the she e being strengthened by stiifeners secure to the web having lengthwise disposed portions extending inwardly adjacent one flange and crossing the web space to the 0p )osite flange to form truss members therewith, thereby providing combined end supporting and web strengthening means for said she 7. A structural member consisting principally of it rolled shape having marginal flanges and a connecting open work web of uniform shape and spacing of openings throughout the length of the shape com rising angulariy disposed ties, the ends 0 the shape being strengthened by stifieners se cured to the web having len hwise disposed portions extending inwar ly adjacent line flange and crossing the web space following the angle made by the ties to the opposite flange and secured to said flanges to form truss members therewith, thereby providing combined end supporting and web strengthening means for said shape.

8. A structural member comprising a rolled shape having upper and lower flanges 12 and diagonal ties 13 constituting its web, and end braces 14: having horizontal outer ends 11 and downwardly slanting inner ends.

16, said braces being secured to the end ties and to the member at their ends, substau tially as described.

In testimony whereof, we have signed our names to this specification.

J. EDMUND TONNELIER. GEORGE C. FEUCHT.

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