US587797A - George robert dawnay - Google Patents

Description

(No Model.)

G. R. DAWNAY. TILE EOE PERMANENT GENTEEING To EIEEPEooE fLooEs.

Patented Aug. 1.0, 1897.

w/TNEssEs UNITED STATES PATENT OFFICE.

GEORGE ROBERT DAVNAY, OF LONDON, ENGLAND.

TILE FOR PERMANENT CENTERING TO FIREPROOF FLOORS.

SPECIFICATION forming part of Letters Patent No. 587,797', dated August 10, 1897.

Application filed June 13, 1896. Serial No. 595,486. (No model.) Patented in England April 29, 1895, No. 8,402.

To all whom, it may concern:

Beit known that I, GEORGE ROBERT DAW- NAY, a resident of 9 Fellbrigg Road, EastDulwich, London, in the county of Surrey, England, have invented certain new and useful Improvements in Tiles for Permanent Centering to Fireproof Floors, of which the fol# lowing is a specification, reference being had to the accompanying drawings, vforming a part thereof, in which similar letters of reference indicate corresponding parts.

This invention relates to flreproof floors and ceilings; and the object thereof is to provide improved tiles for this purpose and improved means for connecting them with the joists, beams, or girders employed for this purpose, and the invention is the same as that for which Letters Patent were granted in Great Britain April 29, 1895, No. 8,402.

The invention is fully disclosed in the following specicatiomof which the accompanying drawings form a part, in which- Figure l isa side elevation of one of the tiles which I employ, showing the method of connecting the same with the j oists, beams, or girders, which are shown in section; Fig. 2, a transverse section thereof on the line` a a; Fig. 3, a side view of a modified form of tile; Fig. 4, a section on the line X X of Fig. 3; Fig. 5, a plan view of the tile shown in Fig. 3; Fig. 6, asection on the line y y of Fig. 3; Fig. 7, a tranverse section of one of the beams, joists, or girders and showing also an end view of anumber of tiles connected therewith and the method of supporting the same, the tiles shown being what are called sin gle-rib tiles.

In the drawings forming part of this specification I have shown at A, Fig. l, transverse sections of two parallel joists, which are provided at their bottoms with the usual flanges C, and in the practice of my invention I provide cross bars or supports B, which rest upon these ilanges, and I also provide suitable tiles T, which may be made of any suitable material and of any desired size, and which are oblong in form and of such length as to extend from one of the cross bars or supports to the other. These tiles are provided with upwardly-directed flanges or plates D,having longitudinal flanges or projections cZ,by means of which they are suspendedlfrom the cross bars or supports B, and these longitudinal flanges or projections may be provided at their outer ends with depending ribs or fillet-s d2, which are designed to hold the tiles in proper position on the cross bars or supports B and to prevent-them from being swung around, and the said tiles are so formed that whenrsuspended from the bars or supports AB they will hang in proper position or be per-v fectly counterbalanced, so that the lower surfaces thereof may be flush or even, as shown in Fig. 7.

The bottoms of the tiles are prepared with sinkings or llets to provide proper keying facilities for plaster, cement, or other material, and the upwardly-directed 'plates or anges D are formed integrally therewith,and said ribs or flanges are shorter than the body portion of the tile, so as to allow of passing up clear between edges of oor bearer or jois't.

The upper surfaces of the tiles are provided with longitudinal ribs G or transverse ribs g, as shown in Figs. 2, 3, and 4, the object of these ribs being to provide proper keyings for the plaster, concrete, or other material, and these ribs are so formed when placed longitudinally as to properly counterbalance the tiles when suspended, as hereinbefore described, or so that thebars or supports B will be in line with the center of gravity.

In place of providing the longitudinal ribs or fillets cl2 I may provide pegs or nails N, which will serve for a similarl purpose and which are passed through perforations form ed in the longitudinal flanges or projections cl.

It will be understood that any desired num-- ber of the ribs G and g may be employed, the only object in this connection being to provide suitable devices which will serve as' proper attachments for the plaster, concrete, or other material, and this is also true of the bottoni surface of the tiles, or said tiles may be ornamented on their under surfaces in any desired manner, and in this event no plastering is placed thereon. It will'be understood, however, that projections or ,openings may be substituted for the ribs G and g and that the lower surfaces of the tiles may be similarly prepared, and the hanging rods or bars B may also be made of any desired material, and my invention is not limited tov the means herein described for suspending IOO the tiles, and any suitable device may be einployed for this purpose.

lIaving fully described my invention, I'

the said tiles, longitudinally-extending pro.

jections secured thereto, depending ribs or fil-lets secured to the outer ends of the said projections and adapted to hold the said tile in position, said tiles being constructed so as to balance perfectly, the bottoms of said tiles being provided with sinkings, and being provided with vlon gitudinal ribs on the uppersurface of said tiles, all of the said parts being combined substantially as and for the purpose set forth and described. v

2. A ireproof iiooring consisting of the combination of a girder B; joists A, resting at its ends upon the lower flanges of two opposite girders; cross-bars, hangers, or supports B, resting upon and against the lower flanges .of two opposite joists, tiles, oblong in form dicular flange D, having longitudinal lips or iianges (l, which are provided on their outside and under edge with a thickening or fillet d2, said tiles being provided with a roughening or keying surface on its bottom, for plaster, cement or the like, substantially as described.

3. A iireproof flooring consisting of the combination of a girder B', joists A, resting at its ends upon the lower flanges of two opposite girders, cross-bars, hangers or supports B, resting upon and against the lower flanges of two opposite joists, tiles, oblong in form and of such length as to extend from joist to joist, hanging from the hangers or supports B, said tiles being provided with a perpenf dicular flange l), having longitudinal lips or iauges d, which are provided on their outside and under edge with a thickening or llet d2, said tiles being provided with a smooth, finished, glazed, embossed and ornamental surface on its bottom, substantially as described.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of the subscribing witnesses, this 16th day of May, 1896.

GEORGE ROBERT DANVNAY.

Witnesses:

HENRY GEORGE BISHOP, ARTHUR CARRICK.

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