US783807A - Joist-hanger. - Google Patents

Description

No. 783,807. PATENTED FEB. 28, 1905. (I. TUTEUR.

JUIST HANGER.

APPLIUATION FILED JULY 28, 1902.

A fir/Hwy:

ir Aras Patented February' 28, 1905.

.'lULlUS TUFEUR, OF (JLEVELANI'), OHIO.

dOlST-HANGEH SPECIFICATION forming part of Letters Patent No. 783,807, dated February 28, 1905.

Application filed July 28,1902. Serial No. 117,287.

To all 11171/0111, it 111/(1/1/ concern:

Be it known that l, JULIUs Turnen, a citizen of the United States of America, and aresidentof Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Joist-l'langers, (Oase No. 1,) of which the following is a specifieation.

My invention relates to improvements in ioist-hangers, and has for its object the provision of a cheap, strong, and efiicient device of this character constructed upon correct lines from a single strap or fiat bar of metal. ln a device of this`- kind the strains or weights to be supported are applied unevenly at different portions thereof, and the problem presented is to shape from the simple strap of metal a hanger that will effectively meet such strains without involving the employment el material otherwise of unnecessarily large cross-section, since in practice it would beimpossible, or, at least, not feasible, to increase` the body of a hanger of this type simply at the points of excessive strain. Accordingly l have so constructed my improved hanger that substantially the same results are attained as would be secured by actually reinforcing' the metal strap at its most vulnerable points.

ln this type of hanger the most likely point of 'failure is along' or near the front supporting edge of the girder to which the hanger is attached. The supporting joist-seat or base of the hanger also requires that it shall be efiiciently stayed to insure sufficient stability therein. These parts I have strengthened or reinforced by constructing the hanger upon correct and improved lines, the embodiment of my invention being briefi y described as consisting of a hanger, generally of U shape, formed of a fiat metal strap with the upper portions or ends bent rearwardly to engage the su pporting-girder. Adjacent to the su pporting edge thereof the metal is fiuted or corrugated, preferably, along' the lines of strain, and the side straps or u prights of the hanger are bent diagonally from the front to present fiat and reetangularly-disposed parts to the girder and to stay the forward edge of and strengthen the liangenseat.

This construction will be much better appreciated by making reference to the accompanying sheet of drawings, whereinm Figure l is an isometric View of my improved joist-hanger; Fig. 2, a side elevation thereof with the girder and joist shown in dotted lines; and Fig. 3 is a cross-sectional view thrcmgh the corrugated portions, showing in dotted lines the remainder of the hanger.

',lhe same character o l: reference is employed to designate similar parts in cach of the said figures.

'llhe drawii'lgs are almost selfcxplauatory, showing, as they do, the complete joist-hanger formed from a single strap or flat bar of iron or steel of the required width and gage and suitably-shaped upon lines adapted to render most efficient support to the joist seated therein.

The hanger comprises a seat or base 1, from which the u lin'ights /1 rise substantially at right angles. Both uprights are bent or folded outwardly and diagonally from the frontatc,the end portions of the hanger being ribbed or corrugated at (l and bent midway of the corrugated portions at right angles to the rear ed ges of the uprghtsb to form engaging portions for the upper face ovl` the supportinggirder y. (Shown in dotted lilies.) The ribs o r corrugations are shown substantially parallel with the edges of the strap and lie along the lines of greatest strain upon the hanger, while the front edge of the juist-seat or base is supported at either side by a web of metal t, extending in direct line therefrom to the supporting edge of the girder. The terminals or extremities 1 of the hanger are bent downward substantially parallel with therear edges of the uprights to overlap the rear edge of the girder. Nail-holes a Z2 are provided in the body of the hanger to secure it to the beam or joist f and the girder q.

As previously pointed out, the two uprights and rearwardly-extending supportingarms are corrugated only adjacent to the portions hanger may be much more readily and cheaply bent to shape by a single continuous opera- TOO tion when the corrugations are confined to small areas of the strap or bar, since the relatively heavy material thereof would be shaped with much difficulty were it fully corrugated. The requirements also demand an increase of strength and rigidity I lind only at these two points, and, moreover, the corrugations as thus disposed permit the supported joist to be at once fitted tightly and firmly within its hanger-seat and abutting' the girder. By fashioning my improved joist-hanger with corrugated angular areas lower grade, and.

hence cheaper stock, may be used to supplant more costly material, with an equally good resulting product.

The construction shown and described very materially stiffens and strengthens the hanger at is critical points. By corrugating the strap at l the elfective thickness of the metal, and consequently its real strength, are very materially increased, while the diagonal folds of the uprights not only serve to present straight rear bearing edges to the front face of the supporting-girder, but rigidly stay the forward portion of the joist-seat. Extremely severe tests haveshown conclusively that my improved hanger is rendered much more efficient by reason of the features of construction herein set forth.

Quite obviously the proportioning and arrangement of the hanger parts will vary somewhat, according to the requirements which are to be met; but such modifications as may be made by mere skill I desire to be underj stood as claiming herein as follows:

l claiml Y 1. rlhe integral reinforced ]oist-hanger havin a joist-seat formed from a flat strap, and side portions outwardly folded which terminate in two rearwardly-eXtending arms for engaging the top of the girder; the same being so formed as to corrugate the two portions of the hanger adjacentl to the supporting edge only, parallel to the lines of tension, substantially as herein shown and described.

2. An integral joist-hanger comprising a flat bar or strip bent to form a joist-seat with uprights or side portions terminating in two rearwardly-eXtending supporting' portions for engaging the top of the supporting-girder; the two angular areas of the said hanger adjacent to the edge of the girder merely, being strengthened by reinforcing ribs or corrugations lying substantially in the lines of strain, substantially as set forth.

3. An integral joist-hanger comprising a flat bar bent to form a joist-seat with side portions outwardly folded to support the edge thereof directly from the girder and terminating in two rearwardly-extending arms for engaging the top of the girder, said supporting-arms having ribs or corrugations substantially in the line of strain and only in the areas engaging or substantially adjacent to the edge of the girder, substantially as set forth.

Signed at Cleveland this 26th day of July, 1902, in the presence of two subscribing witnesses.

J ULIUS TUTEUR.

fitnessesz WILLIS VIGKERY, ALBERT LYNN LAWRENCE.

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