US809090A - Interior concrete structural work. - Google Patents

Description

No. 909,999. PATENTBD JAN. 2,1996.

l P. c. GAINE.

INTERIOR CONCRETE STRUCTURAL WORK. ArPLIoATIoN FILED 199.19.24, 1905.

2 SHEETS-SHEET 1.

Flc-9.1. 1,1

Witwe/ooe@ 314909441601/ No. 909,090. PATBNTED 0.901,2, 1909.

F. C. OAINE.

INTERIOR CONCRETE STRUCTURAL WORK. APPLIUATlo-N FILED 90,911.24, 1905.

2 SHEETS-SHEET 2.

UNITED sTATEs PATENT oEEroE.

INTERIOR CONCRETE STRUCTURAL WORK.

Specification of Letters Patent.

Patented Jan. 2, 1906.

Application filed March 24, 1905. Serial No. 251,896.

To all whom, it may concern:

Be it known that I, FRANK C. CAINE, a citi- Zen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Interior Concrete Structural Work; and I do declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to interior concrete structural work; and the invention consists in a method of and means for building concrete iioors and ceilings and in the construction and combination of parts substantially as shown and described, and particularly pointed out in the claim.

In the accompanying drawings, Figure l is a cross-section of a portion of a floor comprising two I-beams in cross-section and illustrating how a concrete oor and ceiling is built in with said beams, as hereinafter fully described. Fig. 2 is a cross-section of a floor corresponding to Fig. 1, but showing a different construction and arrangement of truss connections or stays between the said beams. Fig. 3 is a perspective view of one of the concrete slabs employed in building up the ceiling and making a platform for the green concrete. Fig. 4 is a plan view of a section of floor corresponding to what is shown in Fig. 5 and showing parts in position to receive the green concrete from above. Fig. 5 is a crosssection on line Fig. 4. Fig. 6 is a crosssection on line y y, Fig. 4, at right angles to Fig. 5. Fig. 7 is a cross-section of a modified form of slab.

The idea of this invention is to avoid the annoyance and expense of building up temporary wood supports for concrete floors and ceilings, as has heretofore very generally been the practice, and to provide a comparatively cheap and effective substitute therefor, whereby a combined concrete floor and ceiling can be laid wlth materially less initial outlay for temporary supports and with correspondingly less labor and time in the prosecution of such work, all as will hereinafter fully appear. Thus it is presumed that the skeleton-or frame work of the building is of steel, as usual where concrete ioors are used, and comprises the usual metallic I-beams A at intervals and concrete floor and ceiling built to these beams; but in addition thereto I employ intermediate sustaining or reinforcing trusses or stays B lvery excellent.

and C, respectively, as seen in Figs. l and Q, and in which two different forms of stays are shown, but which are alike engaged over the top of beams A and serve the same general purpose. In building up a floor and ceiling with these means incorporated therein, but not showing when the work is finished, I employ a number of concrete slabs D, made up to a suitable size and thickness and furnished with embedded ties or tie-strips d of any suitable material, but preferably of wire, adapted to be twisted, as shown, and furnishing a strong support in itself from the stays B or C above. A truss form of stay likeCis deemed Obviously all this work is prior and preparatory to building the body of concrete thereon from above in a green state, and the said slabs of concrete constitute a base or platform onto which the green material is poured and spread and otherwise placed, so as to produce a compact, even, and solid mass as complete in all essential particulars as if laid in the old way. This of course entails considerable weight upon the iioor of slabs D, and in order that they may be temporarily reinforced I provide a series of fairly heavy wooden beams E beneath said slabs and supports or bars G for said beams at the top above the space where the iioor is to come and suspend the beams Etherefrom by means of suitable wires g or their equivalent and which are arranged to come between the edges of the slabs D and fasten about said beams E.

The bars G at the top are supported temporarily by any suitable means here and there over the I-beams, and when all the parts are arranged and built together substantially as seen in Figs. 4 and 5 they are ready to receive the concrete (marked H) and which not only fills in all the interstices about beams A and about and over the cross-stays or trusses B and C, embedding the said stays permanently in the concrete body, as in Figs. l and 2, but also becoming thoroughly amalgamated or incorporated with the slabs D and making the entire mass homogeneous and as if it were all built at one time and out of the same material. The inner surfaces of slabs D are made rough to promote adhesion. When the work is done and the concrete is hardened, the beams or bars E and G are removed and are adapted to bel used over and over again, and the ceiling is then plastered and finished while the top of the cement-body H becomes the floor surface for the room above.

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In Figs. 5 and 6 especially I show how slab D is supported beneath beam A by means of wires 0l about the top of said beam, and the side slabs D rest upon the edges of slabs D.

It will be seen by the foregoing that the only temporary and removable members of the entire structure seen in Figs. 4 and 5 are the upper and lower` beams E and G, which remain in place only until the body of the material has hardened to a self-sustaining condition. Otherwise all the several parts are built in with the concrete and become part of the permanent structure.

In some instances it may be desirable to mold the bottom or exposed surface of the slabs D with an ornamental design, and thereby provide an ornamental ceiling and which would take the place of the ordinary plastered ceiling, and the joints would be pointed up and nished in any suitable manner or could be covered by ornamental molding to give a paneled elfect to the ceiling.

Slabs D are preferably made as light as possible and of such thickness as will support the green concrete with safety. I may also provide slabs D with recesses or raised projections or dovetailed grooves to more firmly bind the slabs and the main body of concrete together, and thereby guard against any possible chance of a slab or portion thereof from becoming detached and falling.

What I claim is- The I-beams and the cross-stays connecting the same at intervals, concrete slabs suspended from said stays between said beams and temporary auxiliary supports for said slabs comprising beams beneath and supports above, and means engaging said beams with said supports.

In testimony whereof I sign this specification in the presence of two witnesses.

` FRANK C. CAINE.

Witnesses:

C. A. SELL, H. T. FISHER.

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