US 1749563 A
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Description (OCR text may contain errors)
March 4, 1930. H. B. CHAMBERLAIN FLOOR CONSTRUCTION Filed April 25, 1929 INVENTOR W ,7 BY AM pm 3 1%? w ATTORNEY5 Patented Mar. 4, 1930 UNITED STATES PATENT OFFECE HAROLD B. CHAMBERLAIN, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO TUCO PRODUCTS CORPORATION, OF NEW YORK, N. Y., A CORPORATION 013 NEW YORK FLOOR CONSTRUCTION Application filed. April 25,
railway vehicles, stair-treads, halls and passageways of buildings and similar locations where considerable pedestrian traffic is encountered. Floor surfacing material of this type should be thorougholy reinforced to decrease wear and possibility of rupture there- ;of at places of greatest traflic and heavy loads,
and it is further desirable that such floor surfacings be firmly and permanently secured to the sub-floor structure.
One serious difiiculty encountered in connection with floor coverings, particularly in transportation vehicles, arises from the unusual amount of Wear and abrasion at the 1 door entrances. Thus at certain points where the pedestrian trafiic is extremely concentrated, as at the entrances of vehicles, on stairtreads, etc., depressions are worn into the floor surfacing, requiring repairs or maintenance at suchpoints when the remainder of the floor covering shows no appreciable ef fects of wear, and since it is desirable to infurther object of the invention to provide a flooring construction in which the wear-retarding means employed is capable of keying the plastic surfacingmaterial to the fioor even after considerable wear has taken place. A further object of the invention comprises a provision of means in the flooring construc- 1929. Serial No. 357,916.
tion for preventing the absorption of liquid from the plastic surfacing material by the sub-floor while the plastic material is being laid and is hardening.
Various other specific objects, advantages and characteristic features of the invention will become apparent as the description thereof progresses.
The composite flooring construction of the present invention preferably includes a sheet of water-resistant material laid directly on the sub-floor and covered by a substantially plane reinforcing member which may conveniently comprise wire mesh of a suitable gauge. A wear-retarding member comprising a perforated metallic plate having raised portions thereof rests upon the reinforcing member, and the wear-retarding member, the reinforcing member and the water-resistant sheet are all firmly and permanently secured to the sub-floor by suitable means. The plastic floor surfacing material is poured over the described construction to the required depth, and flows into locking engagement with the reinforcing member and the wear retarding member. The raised portions of the Wear-retarding member are preferably so formed as to lock the plastic material to the sub-floor even after the surface of the plastic material has worn down to such an extent that the raised portions of the wearretarding member are exposed.
In describing the invention in detail, reference will be made to the accompanying drawing, in which:
Figure 1 is a plan view of one embodiment of wear-retarding plate constructed in accordance with the present invention;
Fig. 2 is a sectional view taken along the lines 22 of Figure 1;
Fig. 3 is a sectional side view of one embodiment of my improved flooring construction with certain portions thereof broken away to show the details of construction; and
Fig. 4 is a plan view of the construction shown in Fig. 3.
Referring to the drawings, the disclosed embodiment of the wear-retarding member comprises a metallic plate 1 having a plurality of perforations 2 therethrough and provided with a plurality of spaced up-, wardly protruding circular wear-retarding extensions 3. The extensions 3 and the perforations 2 may be distributed over the sur-' face of the plate 1 in any suitable manner,
but a symmetrical distribution of these elements is preferred. Each extension 3 preferably takes the form of a frustated cone, the diameter of the extension being considerably greater adjacent the plane of the plate 1 than at the upper end, as clearly shown in Fig. 2. The curved conical walls of the extension 3 lock the plastic floor surfacing material in place when this material has worn down to the level of the upper edges of these extensions, as hereinafter morev fully explained. The extensions 3 are preferably formed integral with the plate 1 and may be conveniently stamped or swaged therefrom, or formed in any other suitable manner. The plate 1 is preferably provided with a plurality of small openings 4 for the reception of fastening means.
Referring now to the composite flooring construction of the invention, one embodiment of which is shown in Figs. 3 and 4, the flooring is preferably laid on a sub-floor 5 of wood, metal or any other suitable material. A sheet 6 of water-resistant or waterproof material such as tar paper is laid directly over the sub-floor 5, and a reinforcing member 7, preferably comprising a continuous layer of wire mesh, is laid above the sheet 6. Suitable means such as nails 8 are employed to secure the wire mesh reinforcing member 7 together with the water-resistant sheet to the sub-floor 5. The wearretarding plate 1 is laid over the reinforcing member 7 and is suitably permanently secured to the sub-floor 5 by the screws 9 or other suitable means. The floor surfacing substance C in the form of a moist and plastic mixture of cementitious material is poured to, the desired depth upon the reinforcing and wear-retarding means as desired, the upper surface thereof being leveled off in any suitable manner at a point above the upper edges of wear-retarding extensions 3. The plastic surfacing material Cfiows through the openings 2 in the plate 1 and through the wire mesh reinforcing member 7, and when this material sets or hardens, both the plate 1 and the wire mesh 7 are firmly embedded therein, and the floor surface securely keyed or locked to the sub-floor 5.
The moisture-resistant sheet 6 prevents the leakage of moisture from the plastic material C and the absorption of such moisture by the sub-floor 5 before the material has set. Thus the material C is not weakened by the premature extraction of moisture thereform during the hardening period, and the sub-floor 5 is not rotted by water from the plastic material. The sheet 6 further separates the plastic floor slab C from the subfloor 5 and thereby prevents the cracking or rupture of slab upon the warping, sagging or vibration of the sub-floor.
The wire mesh reinforcing member 7 strengthens the entire floor slab and further keys or fastens the surface slab to the subfloor. The wear-retarding plate 1 also reinforces the plastic material C and keys it to the sub-floor, but the primary function of this plate is to retard the wearing away of the surfacing material C at points'such as the entrances or vestibules of vehicles where excessive wear is encountered. When the plastic material C is worn down to such an extent that the upper edges of the extensions 3 are exposed, these extensions retard the further abrasion of the floor surface, and thereby prevent premature failure at points of ex-- cessive wear. The tapered or conical shape of the extensions 3 prevents the breakage or dislodgement of the portions 11 of the plastic material C within these extensions 3. WVhen the floor surface is worn down to the edges of the extensions 3, the portions 11 within these extensions are connected to the remainder of the plastic slab by a comparatively thin layer of plastic material below the plate 1 only, but the inclined walls of the extensions 3 firmly key these portions 11 to the remain der of the floor structure and preventthe ltgosening, cracking or dislod-gement there- 0 The wear-retarding plate 1 maybe formed of ordinary sheet metal such as iron, brass or aluminum. The rounded shape of the extensions 3 in the plate 1 provides smooth surfaces for contact with the plastic mate rial C, whereby the cracking of the plastic ioo Q material due to contact with sharp edges is effectively prevented.
Due to the thorough and'eflicient reinforcing and keying means provided, the flooring construction of the present invention is not only of ample strength to bear considerable loads, but is unusually light in weight. The flooring construction is thus particularly desirable for use in railway vehicles where light strong floors are essential, but the in vention is in no way limited to this specific use.
Although the flooring construction of the present invention has been described in connectlon wlth a single specific embodiment, it
should be understood that various changes,
modifications and omissions may be made in the construction without departing from the scope of the invention as defined by the appended claims.
1. A floorstructure of the type described member and said plate to said sub-floor and a plastic surfacing material embedding said reinforcing member and said plate and ex tending above said wear-retarding extensions.
2. A floor structure of the type described comprising a sub-floor, a layer of moistureresistant material on said sub-floor, a network of reinforcing elements above said moistureresistant material, a metallic plate above said reinforcing elements, upwardly protruding wear-retarding extensions on said plate, means for securing said plate and said reinforcing elements to said sub-floor, and a mass of plastic floor surfacing material embedding said reinforcing member on said plate and extending from said mosture-resistant ma terial to a plane above said wear-retarding extensions.
3. A floor structure of the type described comprising a sheet of moisture-resistant material, a network of reinforcing elements above said sheet, a metallic plate above said reinforcing network, a plurality of wear-retarding extensions integral with and extending upwardly from said metallic plate and a plastic surfacing material embedding said reinforcing elements and said plate and extending from said moisture-resistant sheet to a plane above said wear-retarding extensions.
4. A floor structure of the type described comprising a sub-floor, a sheet of moisture resistant material on said sub-floor, a wire mesh reinforcing element above said sheet, means for securing said reinforcing element and said sheets to said sub-floor, a perforate metallic plate above said reinforcing element, a plurality of spaced upwardly protruding wear-retarding extensions on said plate, means for securing said plate to said subfloor, and a plastic surfacing material embedding said reinforcing member and said plate and extending from said moisture-resistant sheet to a plane above the wear-retarding extensions of said plate.
5. A floor structure of the type described comprising a sub-floor, a sheet of moistureresistant material on said sub-floor, a wire mesh reinforcing element above said sheet, means for securing said reinforcing element and said sheet to said sub-fioor, a perforate metallic plate above said reinforcing element, a plurality of hollow frusto-conical wear-retarding extensions 7 protruding upwardly from said plate, means for securing said plate to said sub-floor, and a mass of plastic floor surfacing material surrounding said plate and filling said extensions.
6. A floor structure of the type described comprising a sub-floor, a reinforcing element above said sub-floor, a metallic plate above said reinforcing element, a plurality of hollow upwardly protruding wear-retarding extensions of rounded section on said plate, said extensions being open at their upper ends and being of larger section at the plane of said plate than at their upper ends, a mass of plastic floor surfacing material surrounding said plate and said reinforcing elements and filling said hollow extensions, and means for securing said plate to said sub-floor.
7. A floor structure of the type described comprising a sub-floor, a sheet of moistureresistant material on said sub-floor, a wire mesh reinforcing element above said sheet, a perforate metallic plate above said reinforcing element, a plurality of spaced upwardly protruding hollow extensions of rounded section formed integral with said plate, said extensions having an upwardly constricted inner bore and being open at their upper ends, means for securing said plate to said subfioor and a plastic floor surfacing material surrounding said plate and said reinforcing member and filling said hollow extensions, said surfacing material extending from said moisture-resistant sheet to a plane above the upper ends of said extensions.
In testimony whereof I affix my signature.
HAROLD B. CHAMBERLAIN.