US 1551544 A
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Patented Y Sept. l, 1925.
KENNETH E. CROOXS, 0F WILLIAMSPOBT, PENNSYLVANIA, ASSIGNO'B TO THE'OROOKS- DITTMAR COMPANY, OF WILLILMSPO PENNSYLVANIA.
RT, IPEWNSYLVANIA, A CORPORATION 0F FLOORING.
Application tiled August 16, 1921. Serial No. 492,640.
To all whom it mag/concern.'
Be it known that I, KENNETH E. CnooKs, a citizen of the United States, residingat Williamsport, in the county of Lycoming and State of Pennsylvania, have invented certain new and useful Improvements in Flooring, of'which the following is aspecification, reference being had therein to the accompanying drawing.
This invention relates to certain new and useful improvements in flooring and is an improvement upon a construction of iooring shown in the reissue patent of Elmer C. lDittmar, Number 14,660, dated June 10, 1919, the object being to provide a stripof flooring having a substantially V-shaped groove along one edge and a substantially V-shaped tongue along the other edge c uton different angles to facilitate holding in contact the rounded portionl when interlocked phen the floor is laid over an uneven surace.
Another and further object of the invention is. to provide a flooring strip with a V-shaped tongue cut on an angle'of approximately 50, alon one edge and a -Vshaped groove on-the ot er edgecut on an angle of a proximately so that when a number o these stri s are assembled to produce a ooring, a tight joint will be formed and mantamed irrespective of the roughness of the sub-floor.
Other and further objects and advantages of the invention will be hereinafter set forth and the n ovel features thereof deinedlby the appended claims.
In the drawings,
Figure 1 is a section through a pair of strips showing the .manner of formmg the tongue and groove in accordance with my invention;
Figure 2 is a similar view showing a flooring constructed in accordance with mylinvention in position on an uneven sub-floor; and
Figure l3 is a detail perspective view of one of the iiooring stri s.
In thel drawing 1 in icates a strip'ofgma-I v terial having along onevof its .longitudinal edges a substantially V-shaped tongue `2 formed by beveling the strip from o posite sides, said ltongue being substantialy the same thicknessof the strip and rounded asYA y'shown at 3. The beveled faces 4 forming the tongue are cut on an angle of .for the purpose 'hereinafter fully described.
The opposite longitudinal edge is provided with a V-shaped groove 5 cut on an angle of 45 to form beveled faces 6, the edges of the groove being rounded as shown at 7. When va number of strips are assembled to produce a flooring as shown inFigures 1 and 2`and secured together, substantially V-shaped grooves having rounded edges are formed between the assembled strips. By forming the beveled faces of the tongue at a different angle from the beveled faces of the groove, when a pair of strips areassembled to produce a floorin the rounded edges 3 and 7 will always be held in contact in order` to obtain a tight joint between the strips irrespective of the uneven` ness of the sub-flooring as byvreferrin to Figure 2, I have shown a pair of strips laid on an uneven,- sub1-Hoor to illustrate the advantage of my'invention and by referring to this figure it will be seen that the edges 3 and 7 are in contact and by referrin to Figure 1, which illustrates ioori'nglai on even sub-ooring, the edges 3 and 7 are also in contact. This enables the fiooring to be laid on an ordinary sub-Hoor or over top of a iiooring which has been in use.
As shown in the various figures 'of the drawing, the flooring when laid in accordance vwith my invention produces substan# tially V-shaped grooves having rounded edges between the abutting strips and by cutting the beveled faces of the tongue and;
groove at different angles, I am able to hold the contacting portions of the beveled faces of the tongues and grooves at the intersection of the rounded portions in contact with one another irrespective of the condition of the subiioring which enables the iiooring to be preiinished before being laid. y
I am aware that a flooring constructed with atv-groove larger than the Vtongue can be constructed which could be laid on an uneven surface as this would roduce iooring with a bearin which woul be un equal and when the ooring is laid over a rough. surface it would squeak but with my improvedl construction by forming the groove and tongue of an les of different degrees, a firm bearing is ormed to obtain a tight joint which prevents the floorlng from squeaking when m use.
20 grooved to form a substantlally What I claim isz- 1. A flooring formed of a series of duplicate finished ooring strips having interloeking-substantia1ly V-shaped tongues and grooves along the side edges, each strip having the side edges adjacent to the upper surface cut away to provide a rounded surface said strips when operabl assembled forming a oorin lsurface having substantially rounded V-s aped ooves at the junction of each two strips, t e beveled faces of the tongue of each stri being cut on an angle greater than that etween the beveled faces of the groove of such strip.
2. As a new article of manufacture, a flooring strip having one of its longitudinal edges formed with beveled faces to provide a tongue of substantially V-sha e m cross section and its other longitu inal edgev V-shaped groove, each strip having its si e edges adjacent to the upper surface cut away whereby said edges may cooperate with the respective edges of the adjacent strips to produce a groove at rthe junction of the strips,` the beveled face of the tongue being cut on an angle. of 50 and the beveled face of the groove being cut on an angle of 45 for holding the intersection of the rounded portions in contact.
3t A flooring formed of a series of duplicate finished flooring strips having interlocking tongues and grooves of substantially V-shape in cross section along their side edges, the beveled faces of the tongue4 of each strip being cut on an angle of 50 and the the beveled faces of said groove being cut on an angle of 45. l
In testimony whereof I. hereunto afiix my signature.
KENNETH E. CROOKS.