US1047966A - Floor structure. - Google Patents

Description

M. P. MoGARIfHY. FLOOR STRUCTURE.

APPLIOATION FILED MAR.31, 1910.

Patented Dec. 24, 1912.

42/9 4 14 v I I 6 z: 14v/45 4 46 .6 3 .46 z 3 zz -1c A 20 v WITNESSES: INVENTOR ATTORNEYS.

mrrcnnu. r. mccna'rnr, or ma'w YORK, N. Y.

FLOOR STRUCTURE.

Specification of Letters Patent.

' Application filed March 31, 1910. Serial No. 552.710.

To all whom it may concern:

Be it known that I, Mrronaml MC- CARTHY, a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Floor Structures, of which the following is a full, clear, and precise specification.

My invention relates to floor structures, particularly to floor structures built up of units or members of cementitious material.

In fire proof buildings inetallic' beams, usually I beams, are strung between the main and intermediate supporting walls, and heretofore previously formed blocks of stone or cement have been laid over the tops of the beams, or, molds are formed about and between the beams into which concrete or cement is poured to form the floor structure. The application of. the previously formed blocks ontop of the beams results in a floor structure which is very thick and 00- cupies too much space, while the molding process requires considerable labor and other expenditures.

The broad object of my invent-ion is, therefore, to provide for improved construction and application of floor blocks and other previously formed members, which will result in thinner and cheaper floor structures.

More in detail, the salient objects of my invention are to provide skew backs or ledge blocks which can be previously formed and then applied to the I beams to encircle the webs and lower flange thereof and to provide bearingsurfaces for the floor blocks which span between the I beams; to provide an arrangement which will enable the skew backs to be constructed to support the floor blocks in any desired position between the beams ranging from positions in which the floor blocks are above the level of the I beams to positions in which the top surfaces of the blocks are practically flush with the tops of the I beams; to provide improved reinforcing members in the floor blocks which at their ends may hook over the outer upper flanges of the I beams spanned by the blocks thus to more securely strengthen the floor block and also maintain alinement of the I beams; to provide such construction of the skew backs and the floor blocks that after application. of the floor blocks the skewbackswill be held thereby firmly in position on thesupporting beams; to provide an improved construction which will enable finish layers or material to be readily and quickly applied to the floor blocks to either the top or lower faces thereof; and in general to provide a more simplified and eflicient construction of parts and arrangement thereof to produce a firm and neat floor structure.

In the accompanying drawing which clearly illustrates my invention Figure 1 is a perspective partly sectional view of one form of floor structure, Fig. 2 is a similar view of another form of floor structure, and Fig. 3 is a view of still another form of floor structure, showing finish ceiling material applied thereto.

The main supporting means, here shown as I.beams 1, in practice rest on and span between the main and intermediate walls of a building. To the sides of these beams I apply ledge blocks or skew backs 2 formed up of cementitious material such as concrete or cement, these blocks or skew backs fitting against the web and inner faces of the I beam flanges, and each extending also half way across the base of the I beams, as shown, the bases of the blocks abutting so that the entire web and lower flange of a beam is'inclosed by cementitious material.

These blocks'or skew backs are shaped to offer horizontal ledge surfaces 3 for supporting floor blocks or units 4 which span between the beams. Each block 2 is provided with proper metal reinforcement '5 which preferably follows the outer contour of the block. In Fig. 1 the ledge surfaces 3 are rather low to allow the floor block 4 to drop between the supporting beams to bring 1ts top surface almost flush with the tops of the beams. The vertical faces, 6 of the skewbacks are preferably flush with the outer edges of the upper. beam flange, and these surfacesare engaged by the end faces of the floor block. Each floor block is provided with suitable transverse and longitudinal reinforcing bars 7 and 8 respectively. As shownin Fig. 1, the ends of the longitudinal bars 8 deflect upwardly and then to Patented Dec. 24, 1912.

the exterior of the block to form horizontal extensions 9 terminating in downwardly extending hook ends 10. The sections 9 engage with the tops of the I beams, and the hook ends 10 engage about the outer edge of the upper I beam flanges but preferably not 1n direct contact therewith. The floor block at its outer end edges is cut away to leave recesses 11 for receiving the hook'ends 10 of adjacent floor blocks, as shown in the figure. After the blocks are in place cement 12 is applied over the tops of the I beams and in the recesses 11 to fill the recesses and to cover up the extensions 9 and their hooked ends 10, the top surface of the cement 12 forming then a continuation of the top surfaces of the adjacent blocks. The extending ends of the reinforcing rods 8 and the top of the beams are thus entirely incased by cement, the skew backs, as before explained, incasing the web and lower flange of the beams, the entire beam being thus incased and thoroughl protected against cor rosion and other eflia cts. In Fig. 1 I have also shown nailing strips 13 securely embedded in the top face of the floor block, the

under side of which block may have the peripheral flanges 14, whose longitudinal sections act in the capacity of arches for strengthening the floor blocks and for enabling said blocks to be of considerable length.

In Fig. 2'the ledge surfaces 3 are close to the top of the supporting beams and receive the ends of the floor blocks 4. In this arrangement the horizontal reinforcing bars 8 do not deflect upwardly, as shown in Fig. 1, but extend straight outwardly to engage with the I beam in the same manner as described with reference to Fig. 1. In the arrangement of Fig. 2the floor blocks are shorter than the distances between the vertical faces 6 of the skew backs in order to leave recesses 11 between the ends of the floor blocks and the faces 6, these recesses and the spaces between the floor block ends above the I beams being filled in with cement 12 flush with the top surfaces of the floor blocks.

In Fig. 3 the floor blocks have peripheral rims or flanges 15 whose end sections are provided at their outer faces with intermediate flanges 16 whose lower faces engage with the ledge faces 3 of the skew backs, and whose upper faces form the bases of the recesses 11 for receiving the hooked ends of the longitudinal reinforcing bars 8 passing through'the body parts of the floor'blocks, these recesses and the spaces between the adjacent ends of the floor blocks and above the I beams being filled in with cement in the same manner as in the arrangement of Figs. 1 and 2. The rims 15 extend downwardly below the lower flanges of the I beams for receiving finish ceiling blocks'17. {is shown, each of these finish blocks has inner and outer flanges 18 and 19 at its edges forming between them a groove 20, the inner flanges being slightly shorter than the outer flanges so that when adjacent blocks meet there will be formed a locking channel 21 connecting with the exterior through the passageway 22 between the shorter inner flanges. 1n the adjacent transverse rims of the floor blocks are formed grooves 23 which register to form a channel for receiving the heads 24 of locking keys is, the webs 25 of these keys passing through the channels 22 between the short flanges of the finish blocks, and the flanges 26 of the keys engaging in the channels 21 between adjacent finish blocks, these keys thus serving to rigidly support the finish blocks from and against the rims of the floor blocks. The ceiling blocks can be-applied so that the keys It will engage the adjacent edges thereof to thus interlock the blocks. A layer 27 of insulating material is preferably'inserted between the ceiling blocks and the floor blocks, as shown. The inner flanges 18 of the ceiling blocks are preferably offset a distance so that insulating spaces 28 are formed between the ceiling blocks and insulating material. In some cases the ceiling blocks are not necessary, particularly in the arrangement shown in Fig. 2, where the lower surnecessity of subsequent finishing operations.

The various parts mutually hold each other firmly and securely in proper position, the floor blocks being provided with reinforcing members which hook over the supporting beams so that ti ey arelocked rigidly in position and the supporting beams held in alinement.

I do not desire to be limited to the exact forms, construction and arrangement which I have shown, as changes may readily be made which would still come within the scope of my invention, and I, therefore, desire to secure the following claim.

I claim- In a floor structure, the combination of supporting I-beams, skew back units applied to'the sides of the beams and formed of cementitious material, floor blocks of cementitious material spannin between the skew back units of adjacent loeams and having downwardly extending flanges terminating below said I-beams, ceiling units having lugs or ridges for engaging the floor block flanges to space the ceiling unit bodies from provide air space between said sheets and said flanges, keys engaging on said flanges the bodies of the floor blocks. 10 and with said ceiling unit lugs or ridges for In Witness hereof, I hereunto subscribe my suspending said ceiling units, and sheets of name this 25th day of March, A. D. 1910.

insulat ng material interposed between said MITCHELL F. MCCARTHY. flanges and said ceiling unit lugs or ridges Witnesses: to thereby introduce an air s ace between THOMAS E. COWART,

said sheets and the ceiling unit odies and to JESSE W. TOBEY.

Images