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Publication numberUS2894292 A
Publication typeGrant
Publication dateJul 14, 1959
Filing dateMar 21, 1957
Priority dateMar 21, 1957
Publication numberUS 2894292 A, US 2894292A, US-A-2894292, US2894292 A, US2894292A
InventorsGramelspacher Clarence U
Original AssigneeJasper Wood Crafters Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Combination sub-floor and top floor
US 2894292 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

J y 1959 c. u. GRAMELSPACHER 2,394,292

' COMBINATION SUBFLOOR AND TOP FLOOR Filed March 21, 1957 6 24 CLARENCE u. sa ng E ER 6 m- NJ A i F ATTORNEYS 12,894,292 .COMBINATIONSUB-FLOOR AND TOP FLOOR Clarence .U. lGramelspacher, Jasper, "Ind.,..assignor to Jasper Wood Crafters, Inc., Jasper, Ind. Application March 21, 1957, Serial No. 647,577 I 9 Claims. .(Cl; 20-8) Thisinvention pertains to woodflooring and in particulartto laminated .woodflooring and more specifically stillto flooring in the form-of a .oombinationsub-floor and .top floor.

In the laying of floors in abuilding, such as a residence structureit is customary to-lay sub-flooring on the joistsandthento apply the top Ifiooring on top of the Sll'b'xflGOT. This arrangement is generally satisfactory so longas .the-flooringremains tight but thereis a tendency towork loose and'squeak after a period of-time. Further, the laying of sub-flooring and then the subsequent laying thereon of top flooring represents two complete and independent operations thus-involving the expenditure of considerable time and labor. In any case where top flooring is laid separately from the sub-flooring it is necessary to carry out extensive finishing operations on the'floor. in order to bring the surface .to the desired finished condition.

Having the foregoing .in mind,.the primary object of thepresent invention is to provide a floor member to. be laid on joists. of a building to. form the floor ithereofpand whichmember comprises as an integral unit both the subfloortand top .fioor.

.of on which squeaking of the floors is entirelyeliminated.

A still further. object of this inventionis the provision ofa panel member that can be laidon'the joists of a building inaking up a floorwhich ;can be applied .to sub- .flooring and whichpanelmember is sealedvand which will remain tight and squeak-proof for along period.

A furthero'bject of the present invention is the provision of a factory constructed floor panel having in combination subflooring and finished top flooring integrally secured to the sub-floor so'that themember can be laid on the joists of .a building tomake up a complete sealed tight ,floorin a single operation.

A further object of the present invention is the provision of an arrangement for laying floors in buildings such that factory finished panels can be employed thereby making itpossible to create a variety of .difierentfioor patterns without the great expense that accompanies the creation of such patterns in the floor at the time it is laid.

Another object of this invention is the provision of a tongue and groove type floor panel of substantial size whichtcan be placed directly on the joists of a building to makeup the entire floor thickness thereof and with the panels being of sufficient area that the floor lays up very quickly thus eliminating a great. deal of the labor ordinarily associated with sucha work operation.

These and other objects and advantages will become more apparent upon reference to the accompanying drawuings in -which:

United States Patent iJFigure lis a perspective View showing, somewhat dia- 2,894,292 Patented July 14, .1959

"ice

grammatically, a floor panel according to my invention;

Figure 2 is a perspective view similar to Figure 1 but showing the top and intermediate panels cutback to show the manner in which the three thicknesses of the panelof Figure 1 inter-fit.

Figure 3 is a sectional view through the floor portion of a building showing the joistsand the manner in which a panel according to the present invention lays up thereon.

Figure 4 is a perspective view showing the manner in which the present invention could be adapted for forming a two-ply flooring panel to belaid on a conventionalsubfloor;

Figure 5 is a view like Figure 1 but shows the .top floor in the form of strips rather than blocks;

Figure 6 isa plan viewshowing a panel somewhat like that illustrated in Figure 1 except with the individual blocks of thepanel being formed of small stripsto form a parquet surface efiect.

Figure 7 is a sectional view indicated byline 77 of Figure 1 showing theindividual plies 'of the surfaae sections of the floor panel.

Referring tothe. drawings somewhat more in detail the floorpanel illustrated in Figure 1 comprises a bottom section 10, an intermediate section 12, and a top section 14. Bottom section 10 is of ply-wood as is also intermediate sectionlZ. The top section14 is also-composed of plywood but .is in the form. of individual rectangular blocks 16 having a hard wood upper facing suitable .-for a floor surface and finished smooth andwith adja cent blocks 16 laid, preferably, so that they are respectivelyat right angles. 9

.It is preferred that the three layers be ofthe same overall dimensionsandthis enablesthe top and bottom layers to be arranged in exact vertical alignment with each 'otherwhile the intermediate layer or section 12 .is off-set longitudinally and laterally thereby forming va tongue on two adjacent edges of the panel in andaa corresponding groove on the othertwo adjacent edges.

The plies making .upwthe sections Ill, .12 and 14. may vary considerably as to the make up but a preferred arrangement is .to have the bottom-mostply of section 10 ofsubstantial thickness and to have the top-most ply Figure 7 which is asection through one edge of. panel of Figure 1 in somewhat enlarged scale. This view also showsfthe groove 18 that extends about two edgesof the panel and which may advantageously be somewhat tapered on .the top to. receive the'tongue of the next adjacent panel which may. similarly besomewhat tapered onthe top surface to 1 match the tapered surface of the tongue. V

As will be seen in Figure 2 the three sections of floor panels are connected by. conventional gluing methods by applying an adhesive 20 between the layers and'then pressing them together and permitting the. adhesive to set.

Thepanel of Figure lis made up of three sectionsj but it will be evident that the panel could consist of merely twosections as shown in Figure 4 and be laid 'on subfiooring 22. The backing of the panel is indicated it at :24 and comprises plywood and the topxfloorat26 may ;be madejup ofpanels of any.suitablewtyperandzthese may be plywoodalsoor may consistofiindividual strips 1. of .flooring wood asillustrated. As in the ease; .otvthe panel of'Figure 1 panels 24 and 26 are preferably set up to provide a tongue and groove effect for interlocking the adjacent panels and provide for a sealing overlap therebetween.

Figure illustrates a panel like Figure'l except the top floor 28 thereof is in the form of strips and which strips may be the entire thickness of the top section of the panel, or may comprise veneer strips forming the top ply of the plywood making up the top section of the panel.

Figure 6 shows a still further modified panel arrangement in which the top face of the panel presents a parquet surface effect by means of parquet blocks 30' arranged on a backing similar to the previously described panel arrangements.

A feature of the present invention resides in the fact that a panel of substantial size when glued up in the manner described and illustrated, tends to warp so as to be concave upwardly. This effect will be noted in Figures 1 and 5 and in Figure 3 it will be seen how the panel appears when put in place on the floor but before it is nailed to the joists.

The showing in Figure 3 illustrates a plurality of ad- 'jacent joists 31 and at the extreme right side of the view is the left edge of a panel 32 fixed in place on the joists. Leftwardly of panel 32 is a panel 34 receiving in its groove '36 the tongue at the left edge of panel 32. It

will be noted that panel 34 curves upwardly before being fixed in position against the joists. When the panel 34 is pulled down into the position indicated by the dotdash outline 38 it will be flat and press against the joists from one edge to the other thereby eliminating squeaking and cracking of the flooring. The panels may be nailed in place or there may be an adhesive applied between the joists and the panels or both may be employed in order to arrive at a particularly permanent and tight structure.

It will be evident that the floor panels could be laid on sub-flooring if so desired with the advantage obtaining that all nails in the panels could be invisible with a suitable adhesive connecting the panels to the sub-flooring.

I claim:

'1. In a floor panel; a plywood surface layer having its upper ply of substantial thickness and of hardwood, a core layer applied to the back of said surface layer and off-set therefrom in two directions and adhesively connected to the top layer, and a backing layer in alignment with the top layer and adhesively bonded to the back of said core layer whereby integral tongues and grooves are formed about the panel, and said panel being characterized in that it is at least slightly concave up- '-wardly whereby it bears against joists on which it is laid up with sufiicient pressure to prevent squeaking and cracking.

2. In a floor panel; a plywood surface layer having its upper ply of substantial thickness and of hardwood, a core layer applied to the back of said surface layer andofiset therefrom in two directions and adhesively connected to the top layer, and a backing layer in alignment with the top layer whereby integral tongues and grooves are formed about the panel, and said panelbeing characterized in'that it is at least slightly concave upwardly where by it bears against joists on which it is laid up with sulficient pressure to prevent squeaking and cracking, the

.said upper ply of the top layer being made up of blocks with the grain of adjacent blocks at respectively right angles to each other.

3. In a floor panel; a plywood surface layer having its upper ply of substantial thickness and of hardwood, a core layer applied to the back of said surface layer and off-set therefrom in two directions and adhesively connected to the top layer, and a backing layer in alignment with the top layer whereby integral tongues and grooves are formed about the panel, and said panel being characterized in that -it is atleast slightly concave upwardly whereby it bears against joists on which it is laid up with sufficient pressure the upper layer of the panel being formed of strips extending the length of the panel.

4. In a floor panel; a plywood surface layer having its upper ply of substantial thickness and of hardwood, a core layer applied to the back of said surface layer and off-set therefrom in two directions and adhesively connected to the top layer, and a backing layer in alignment with the top layer and adhesively bonded to the back of said core layer whereby integral tongues and grooves are formed about the panel, and said panel being characterized in that it is at least slightly concave upwardly whereby it bears against joists on which it is laid up with sulficient pressure to prevent squeaking and cracking, at least the top layer of the upper layer of the panel being formed of narrow strips laid up in a block pattern.

5. In a floor panel; a plywood surface layer having its upper ply of substantial thickness and of hardwood, a core layer applied to the back of said surface layer and off-set therefrom in two directions and adhesively connected to the top layer, and a backing layer in alignment with the top layer and adhesively bonded to the back of said core layer whereby integral tongues and grooves are formed about the panel, and said panel being characterized in that it is at least slightly concave upwardly whereby it 'bears against joists on which it is laid up with suflicient pressure to prevent squeaking and cracking, at least the top layer of the upper layer of the panel being formed of narrow strips laid up in parquet pattern.

6. In a building structure; spaced floor joists, and floor panels laid up on the floor joists and forming the floor, said panels being of substantial size and comprising'a plurality of layers of plywod integrally bonded together, and said panels being characterized in being at least slightly concave upwardly before being fixed to the joists.

7. In a building structure; spaced floor joists, and floor panels laid up on the [floor joists and forming the floor, said panels being of substantial size and comprising a plurality of layers of plywood integrally bonded together, and said panel being characterized in being at least slightly'concave upwardly before being fixed to the joists, said panels having inter-engaging tongues andgrooves about the edges.

8. In a building structure; spaced floor joists, and floor panels laid up on the floor joists and forming the floor, said panels being of substantial size and comprising a plurality of layers of plywood integrally bonded together, and said panel being characterized in being at least slightly concave upwardly before being fixed to the joists, said panels having a surface ply of substantial thickness and of hardwood whereby the panel can be finished in a conventional manner after being laid up on the joists.

9. A method of flooring a building having joists which comprise; preparing floor panels of a substantial area so that the panels will span a plurality of spaces between the joists, forming said panels so as to be concave upwardly, and fixing the panels to the joists so that the panels areflat and thus bear down on the joists between the edges of the panels thereby preventing squeaking and cracking of the floor, said method also including the step of overlaping the edges of panels whereby the panels are sealingly inter-fitted.

References Cited in the file of this patent UNITED STATES PATENTS 187,502 Banker Feb. 20, 1877 1,477,813 Daniels Dec. 18, 1923 1,520,313 Skinner Dec. 23, 1924 2,253,943 Rice Aug. 26, 1941 2,257,048 Fulbright Sept. 23, 1941 FOREIGN PATENTS 284,205 Great Britain June 28, 1928 485,823 Canada Aug. 19, 1952

Patent Citations
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US3042563 *Nov 13, 1959Jul 3, 1962Plastic Coating CorpDecorative laminated paper board and the method for its production
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Classifications
U.S. Classification52/474, 428/61, 52/591.1, 428/56, 428/53, 52/747.11, 428/120
International ClassificationE04F15/022
Cooperative ClassificationE04F15/022
European ClassificationE04F15/022