US534189A - Thomas bailey - Google Patents

Description

(No Model.) l T.. BAILEY;

FIREPROOF 'FLOOR STRUGTURE.

v Qa Z1/Tiri Y 94; f1- 71/\ 71 j@ A i' Y WITNESSES- PATENT FFC.

THOMAS BAILEY, or NEW YORK, N. Y.

fjFlREPRooF r-"Loo'ri STRUCTURE.

SPECIFICATION forming part of Letters Patent No. 534,189, dated February 12, 1895.

Application nea nach 19,1894..

To 'all whom it may concern:

the beams, and it consists of dovetail ribbed andgrooved metallic sheets whereof the webs of the/bottoms of the grooves are flat, for the support of the [ire proof material between the oor beams and resting at the ends on the lower iianges of the beams,\with`plaster coating ofthe under side, and said lplates when straight adapted for positive resistance to end thrusts to prevent lateral `movement of the beams, the plaster being secured by anchorage in the dovetail grooves land largely reinforcing the power of `the sheets both for supporting weight and resisting end thrusts, whereby I provide cheaper and stronger iilling between the beams and such as may be more readily used.

Y My invention also comprises a simple contrivance for suspending protective coverings for the under sides of the beams from the supporting sheets of the filling material be tween the beams, all as hereinafter fully described, reference being made to the accom- V panyingdrawings, in which@ Figure 1, is a transverse section of the floor beams, and of the intermediate filling as I construct it. Fig. 2, is a `section on line -x Fig. 1. Fig. 3, is a transverse section of the iioor beams and the intermediate filling with the ribbed and grooved sheets in arched form. Fig. 4, is a section of Fig. 3 on line y-y. Fig.

5, is a'plan view of a section of the skeleton floor.A Fig. 6, is a detail in section showing a modified arrangement for protecting the under sides of the beam. Fig. 7, is a detail showing the shape of the ends of the' sheets for the way of protecting the under sides of the beams as inFig. 6. Fig. 8, is a plan view of one'form of bar employed for suspending the lathing 'strips under the'floor beams. Fig. 9, is a plan View of another form of suspending bar for lthe same purpose. Fig. l0, is a detail showing a side view of part of a iioor beam, secserin No. 504,152. (No moda.)

tion of part of a ribbed and grooved sheet, l

and end View of the lathing strip supporting bar of Fig. 8 placed in position, and Fig. 11, is' afview'similar to that of Fig. 10, showing the lathing strip of Fig. 9 in position.

A represents/a couple of metal floor beams between which the fire proof filling is to be placed. v I

b represents thin sheets of metal which are dovetail ribbed and groovedlengthwise, with fiat webs' of the bottoms of the grooves and placed between the beams with the ends resting on the lower iianges a, of the beams.

c represents filling of plaster,`cement, or`

other approved fire proof material, and d represents a plaster coating of the lower surface ofthe plates secured by the anchors c, pressed into the dovetail grooves ot' the under side of the sheets.

lThe metal sheets will be first crimped in the usual manner of crimping, and then they will be placed in position loosely side byside with the ends resting on the flanges a, and with the edges touching-each other, and will then be covered above with any kind of cheap non-combustible filling material shoveled in and lightly tamped and finished with a smooth top tinish of `mortar. The under coating should be agood quality of plaster adapted to set hard and smooth and have strength to hold securely. Sheets of thin, light, andinexpensive character thus crimped alo'rd ample strength for strong floors, the strength largely depending upon the depth of the crimps which may be more or less according to circumstances.

The crimped sheets will generally be flat as in Figs. l and 2, but they may be arched as in Figs. 3, 4 and 6 for greater strength for supportingthe filling above with less ,depth ofthe crimps. When flat asin Figs. l and 2, the ends ofthe sheets resting on the flange a, will be recessed and beveled as atm, to let the lower surface down iiush withthe lower surface of the beams, the recesses being pr0- duced in such a way that the flat bearing webs of the bottoms of the grooves are preserved, and the ends are made to abut against IOC the webs ot' the beams for stays to prevent pensed with. lVhen the sheets are arched the ends of the fiat webs of the bottoms of the grooves have bearing their full width on the iianges of the beams, aiording more substantial i'oot rests than the ends of ordinary corrugated sheets.

For protecting the under sides ot the beams I provide supporting bars n or o, for holding lathing sheets under said beams, said bars being adapted to have the ends secured in dovetail grooves of the sheets b,by expandin the split ends p of bars n, or by means of buttons q pivoted on the ends of bars o, which when ranging lengthwise of the grooves will enter them and when entered and turned crosswise of the bars and the grooves, and the plaster d, is applied, will be eitectually secured therein.

In another way of protecting the under sides of the beams, more particularly applicable to the arched sheets, I make a notch as g, in each end to receive theflange a, with a part l below extending a little farther than the part above the notch so that these parts Z will meet below the beam, the sheets being supported on the fianges of the beam by the parts 1I above the notch, and to provide more substantial support of the ends of the plates on the iianges ot the beams I insert bearing blocks 7c, between the iianges and the upperwebs of the ribs whereby the stress is distributed, and tearing the side websof the ribs and at the same time serve the purpose of` metal lathing for the under coating of plaster. The upper filling may consist of cheapnuaterials for the most part as broken bricks or stones mixed with cement of any kind.

I am aware that iiat dovetail corrugated sheets have been used on the upper sides of wood beams for the support of floors and also on rafters for the supportfof cement rooting, and I do not claim such application of such sheets myinvention being limited to thekind of floor construction in which the filling is located between the beams and where the said plates maywhen straight and thus adapted to resist powerful end thrusts-be utilized for stays to prevent lateral movement of the beams. I am also aware that both arched and flat corrugated sheets of the ordinary form not having the dovetail ribs and grooves have been similarlyplaced on the iianges between the beams,y asin patents to Hoyt, No. 173,470; Fugman, No.475,851i, and White, No. 511,385, and I do noticlaim such device, my invention being also limited to sheets having dovetail corrugations for holding the plaster coating both on the upper and the under sides in` a way to add largely both to the power of the sheets to `resist end thrusts, and to resiststressestend ing to break them, besides simplifying the means of attaching the plaster to the under side for beingr retained thereat, and to utilize the fiat bottoms of the ribs for more substantial and reliable bearing on the supporting llanges of the beams. In the forms of corrugations represented in the said patents, the bearings of the sheets on the beam flanges are narrow points of the crowns of the inverted arches of the ribs distant from each other the entire length of the pitch of the corrugations which oler but slight resistance to crushing stresses of the weight, while the broad. flat seats of the dovetail ribs reinforced with the fillings of cement locked in the dove tail grooves of both sides of the sheet afford ample power for sustaining the greatest weight liable to befimposedtand it is to be specially noted that the "cement thus locked in the grooves of `both sides of the sheets largely stiensthe sheets against` end thrusts for greater power toresist lateralrmovements of theA beams and also increases their power of supporting-weight. Theret'oreait is plain that much lighter sheetswith, smaller corrugations may be used forgivenzstrength. The cement locked in the grooves: by their', dove tail forminnites with thewebs otfthegrooves and forms a solidfmass electually preventing the webs frombuckling understresses, whereas the cement covered sheetsoi` ordinary corrugations have `onlyr'theweight of the cement to oppose the crowdingtof thecement out of the grooves in the actof buckling.

1. In fire proof oor construction, dovetail ribbed and grooved sheet metal plates having flat` webs of the bottomsof the grooves placed between the beams and resting at theends on the loweriiianges of the iloor` beamsgsaid f ends ofthe sheets beingyrecessed and the lower surfacesof thesheets arranged flush with the lower surfaces of the beams ,with iilling oftire proof material above,` and a `plaster coating of the under sidesecured in the dovetail grooves substantially asrdescribedi 2.` In r fire proof oor construction, `dovetail ribbed and groovedsheet metalfplates placed between the beamsand` resting at theends on the lower flanges, of the iioor beams, with filling of :tire proof material above, a plaster coating offtherundersides of the sheets, and also under the beams, thepart under the beams supportedfrom the sheets substantially `as described.

3. In `fire proof iioor construction, dovetail ribbed and grooved sheet metalplates placed between thebeams and resting at the ends on the lowerrilangesi ofil the floor beams, with Iillingof tiren proof material above, a plaster coating of theundersidesof the: sheets, and also under the beams, `thepart` under the beams supported from the sheets bythe bars having the ends secured in the dovetail grooves ofthe sheet metal platessubstantially as described.

4:. In tireiproof-floorrconstruction the combination of metallic beams having `lateral anges of the lower edges, dovetail ribbed IOO forcing bearing blocks in the grooves of the.

underside of the sheets and resting on the flanges of the beams, and with lling of fire proof material above the sheets and plaster coating of the underside secured in the dove- I5 tail grooves substantially as described.

Signed at New York city, in the county and n State of New York, this 21st day of February,

THOMAS BAILEY. p

Witnesses:

W. J. MORGAN, Sg. H; MORGAN.

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