US1158196A - Floor structure. - Google Patents

Description

. FRANCIS FLOOR STRUCTURE APPLICATION FILED NOV.

Patented Oct. 26, 1915.

2 SHEETS-SHEET l.

cnLUMmA PLANDGRM'H co.. WASmNG'mN, nA c.

Patented Oct. 26, 1915 2 SHEETS-SHEET 2.

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WIT/VESSES COLUMBIA PLANOGRM'H cn..w/\SH|NGTON. D. c.

FLOOR STRUCTURE.

Application filed November 3, 1914.

To all whom t may concern Be it known that I, WILLIAM PINGKNEY FRANCIS, a citizen of the United States, and a resident of Atlanta, in the county of Fulton and State of Georgia, have invented a new and Improved Floor Structure, of which the following is a. full, clear, and exact description.

rIhis invention relates to floor construction in which cellular tiles, metal reinforcing bars and concrete form the constituent elements, and the invention has to deal more particu* larly with a slab construction embodying a plurality of tiles, which slabs are laid side by side and supported on beams or girders, and over the slab is poured a surface-forming concrete.

'Ihe general objects of the present invention are to provide an improved form of slab made of cellular blocks or sections which are bonded by concrete in a novel and effective manner, whereby a slab of great strength and durability is obtained.

A further object of the invention is the provision of a novel form of cellular tile especially designed to be severed longitudinally so that these severed sections can be laid in two lines a suitable distance apart and bonded by concrete, the surfaces in the plane of severance being so shaped that the bonding concrete will be dovetailed into the severed sections of the tile.

With such objects in View and others which will appear as the description pro ceeds, the invention comprises various novel features of construction and arrangement of parts which will be set forth with particularity in the following description and claims appended hereto.

In the accompanying drawings which illustrate one embodiment of the invention and wherein similar characters of reference indicate corresponding parts in all the views, Figure l is a perspective view of one of the cellular tiles as manufactured; Fig. 2 is a transverse section of a slab showing two sections of a tile united by a bond of concrete, the slab being in place on a form that is used in the making of the slab; Fig. 3 is a transverse section through two slabs arranged side by side as in the laying of a floor; Fig. 4 is a similar view with the concrete ooring layer applied to the slabs;

Specification of Letters Patent.

Patented Uct. 26, 1915.

serial No. 870,015.

Referring to the drawing, in Fig. 1 is shown a terra cotta or other cellular tile which comprises a bottoni plate Vl, a top plate 2, outer vertical walls 3 and inner vertical walls 4, said plates and walls being so related as to form longitudinal passages or cells 5. The walls 4 are spaced apart to form a central passage 6 and the tile is scored at the top and bottom along the lines 7 and 8 so that the tile can be severed by a trowel or other instrument into two sections a and vseparable on a plane passing centrally between the inner walls 4. This leaves in theouter surface of each wall 4 a recess 9 which is of dovetailed cross-section for the purpose of enabling the two sections to be bonded together effectively by cement which is placed between the sections while the latter are suitably spaced apart. 'Ihe plate 1 projects from the sides of the tile to forni anges 10 for the purpose to be hereinafter described.

In making a slab from tiles of the construction described a form A, Fig. 2, is employed, this form being as long as the slab desired and of a width corresponding to the width of the slab. The sides of the form are provided with upstanding flanges l1 and lla, so that the slab will be of uniform width throughout its length, and all the slabs will be of the same width. In making the slab the cellular tiles are divided into two sections a and ZJ, and these sections are placed on, the forni with all the sections a in end to end contact and the sections b also in end to end contact, and all the sections ct are in engagement with the flange 1l of the form, while the sections b are engaged with the flange 11a. This leaves a space between the oppositely disposed sections a and b the full length of the slab, and this space is filled with a bonding material, such as concrete 12, Fig. 2, but before this material is filled in a metallic reinforcing bar or fiat strip 13 is disposed longitudinally of the space between the two series of tile sections a. and the plane of the strip being vertical or parallel with the walls 4, and this strip is long enough that its ends will project out of the ends of the slab. After the concrete l2 has hardened, the slab is removed from the form A.

In laying a floor, roof or other structure the slabs made as described are placed side by side in longitudinal parallel relation, as v shown in Fig. 3, The flanges 10 of the cell.

formed between adjacent slabs.

form flanges extending the full length of the slab, and these flanges are placed in contact so that a longitudinal channel 14 is In this channel is a longitudinal reinforcing means in the form of an iron bar 15, and after this i's placed a surface layer of concrete 16 is poured over the slabs and smoothed, this concrete filling the channels la;

It is to be understood that the slabs have end supports such as the beams, girders or piers B, Figs. 5 and 6. It will be noted that the series of slabsC are in line with the series and C2, and the projecting extremities 13a of the reinforcing bars 13 of the alinv ing slabs of the several series are arranged in overlapping relation, and for this purpose they are slightly bent, as clearly shown in Fig. 5. These overlapping extremities of the reinforcing bars overlie the beams B and each reinforcing bar 15 between adjacent slabs overlaps at its ends 15,u the extremities Yof alining reinforcing bars, and

` f this overlapping occurs directly over the beams. IVhen the surface layer of concrete 16 'is placed over the slabs it not only covers the latter but fills in the space between the ends of alining slabs at the beams or girders B, and consequently the overlapping extremities of the twov sets of reinforcing bars will be embedded in concrete.

From the foregoing description taken in connection with the accompanying drawing,

the advantages of *the construction and 35 method of operation will be readily understood by those skilled in the art to which the invention appertains, and while I have described the principle of operation, together with the structure which I now consider to be the best embodiment thereof, I desire to have it understood that the structure shown is merely illustrative and that such changes may be made when desired as are within the scope of the appended claims.

Having thus described my invention, I claim as'new and desire to secure by Letters Patent:

1. A tile structure made of two symmetrical halves, each formed of four walls providing a chamber open at the ends, the inner walls of the two halves being scparated by a narrow chamber of double dovetailed cross-section, there being grooves forming lines of cleavage disposed centrally of the said last-mentioned chamber, whereby the tile can be separated into two similar parts, each half of the tile having an outwardly-extending flange flush with the bottom face.-

2. As a new article of manufacture, a slab composed of spaced lines of hollow bodies, and concrete between the lines for bonding the lines of bodies together and for holding the bodies of each line together, said bodies composing halves of tiles each formed of four walls providing a chamber open at the ends, the inner walls of the two halves being separated by a narrow chamber of double dove-tailed crosssection, there being grooves forming lines of cleavage disposed centrally of the said lastmentioned chamber, whereby the tile can be separated into two similar parts, each half of the tile having an outwardly-extending flange iiush with the bottom face.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM PINUKNEY FRANCIS. lVitnesses FAIR Donn, F. T. RILEY;

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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