Патент USA US2129497код для вставки
Sept. 6, 1938. , E. A. HORN> I I 2,129,497 SPLINE PANEL JOINT ' Filed Dec. .20, 1957 Z. l: , ' y ' Í f ,f' ,«' / :Z4 'www A» ' ~ / 1,2 1)? ül R _.70f 10 / ¿\\v\\ \` \ \>\ 12 %><Èî\<îì\\\\ 12 / M /// // l 4?/ ,/ l’/////// i / /0 > _20' 10 'i .bg/¿114.74m .nlll y , „ ' " M . _ «|' _. l@gl/Infini' « WW" ß@ |-l 3mm fra/Ufo UH. jî’or/7„ A2,129,491 Patented Sept. 6, 1938 UNITED STATES _PATENT oFFICE _ 2,129,497 sPLINE PANEL JolN'r Erwin A. Horn, Seattle, Wash., assignor to I. F. Laucks, Seattle, Wash. ‘ Application December 20, 1937, Serial No. 180,890 Z Claims. (Cl. 2li-_15) My invention relates to a method of forming the wedge is not everywhere equally tight. 'I'here joints in paneled wall -structures and to the product thereof. More particularly, the inven tion relates to> an improved joint for paneled 5 walls including the feature of forming a longi is also a tendency for panel edges to rise, or pop tudinal recess of uniform cross section, having joints does not seem to counteract this tendency. The present invention solves these diniculties boundary surfaces formed both in the support by a new treatment which is free from these ob ing framing member and in the edges of adja cent wall panels and in amxing therein a spline f -jections ,and insures the maximum possible con of the same cross section as the recess, the spline tact between the cooperating surfaces. Atten 10 being preferably adhesively united with all the tion is .directed to the accompanyingdrawing in boundary surfaces and then dressed oiî flush with which: Figure 1 is a perspective view with parts broken the face surfaces of the panels to form a flush away of a_ previously grooved supporting stud ToA the accomplishment of the foregoing and and two surface- panels meeting thereon with related ends, the invention, then comprises the their meeting edges located above the groove. Figure 2 is a view similar' to Figure 1, lbut features hereinafter fully described, and particu showing _the remainder of the spline'groove cut larly pointe-d out in the claims, the following de in the edges of panels meeting above the groove. scription setting forth in detail certain illustra Figure 3 is a similar view to Figure 1, showing tive embodiments of the invention, these being indicative, however, of but few of the various the spline secured in place and projecting some ways, in which the principle of the invention may what beyond the surfaces of the panels. Figure 4 shows a similar view but with the be employed. _ ‘ The extensiveluse of plywood and artificial spline dressed flush with the panel surfaces. _ , Figures 5, 6, '7, 8 and 9 show, in perspective, 25 boards in constructing paneled walls has preend portions of some of the various types of sented a troublesome problem in- producing satis y factory flush joints at the junction of the panels. I,splines which may be used; A preferred form of the present invention em There has been a marked tendency for cracks and defects to develop along the joint, and, although ploys the following method as illustrated in Fig various methods for forming panel joints have ures 1 to 4. Studs, as at I0, are provided as shown 30 been devised, none has been wholly satisfactory. with a groove I I cut straight and true. In erect One such method has been to apply glue-to one ing the wall, the meeting edges of adjacent pan of the adjacent panel edges and then butt it els I2 are so located as to come approximately parallel to and over >the groove II. To form a tightly `against its ma'te, sometimes with the ad ditional feature of gluing the panel edges shown strong wall of superior quality it is preferable down to the supporting stud. Another suggested but not essential that thepanels be glued to the method has been to slightly space apart the face of the stud along `surfaces I3 and then edges of- adjacent panels where they meet on nailed so that the holding power of the nails the surface of a stud and then press in tightly acts as a retaining clamp to insure a good glue " and glue in place .a thin wedge-shaped member joint. When the glue is set, a small hole of the 40 dressing the projecting portion off flush with the same diameter as. the width of groove II is panel surface. Such methods have been found _ bored through the face of the panels into the open to the rather serious objection that the groove in the stud. An electric router is then used with a pilot >tip which iits the stud groove edges of panels, as furnished by the panel manu facturers, are not perfectly straight. Obviously, II and cutting bits which cut out the adjacent if one of them is not quite straight, neither the panel edges to form surfaces indicated by the butt joint _method nor the wedge arrangement reference‘numeral I4. The bits are arranged so can give very perfect results. In neither case is that the cross section of the recess thus formed, it possible to get a perfect glue joint from panel and previously formed, is exactly the same as the. to panel along the entire surface of the abutting cross section of the spline member i5, or portion 50 panel edges, and in the case of the wedge method, thereof, which is secured in the completed groove. the faces of the wedge member are only tight These spline members may take a variety of to the panel edges at the outer surface and are forms, such, for example, as those shown in necessarily loose within, and, owing to lack of Figures 5, 6, 7, 8, or 9, at I6, I1, I8, I9 and 29, wall. i. Ci 20 30 40 50 up slightly from the supporting stud particularly where they are only held downfwith nails. The aforementioned wedge method of forming the 5 ` - 55 complete parallelism of the adjacent panel edges, with corresponding character of router bits. _ As 2 2,129,497 shown in Figures 3 and 4, the spline l5 is then secured in the groove, preferably by gluing, and after the glue is set, if a flush wall is desired, as is usually the case, the projecting portion lia oi' the spline is dressed smooth with the panel surfaces. If desired, an ornamental spline hav ing an outer surface which forms a batten may be used and the projecting portion allowed to remain. Figure 9 illustrates a spline of this 10 character. Where it is used it is desirable to provide glue on> the lower surface of the pro jecting batten portions so that all the Contactin surfaces are securely glued together. 15 ' Obviously many modifications may be _used employing the principles of this invention, it be ing essential, however, that the groove be formed to an accurate cross 'section both in the abutting panel edges and in the stud and that the spline be an accurate ñt for the groove and strongly se As here shown, the grooves are 20 cured in place. preferably outwardly unrestricted so that the splines may be applied by- direct movement to ward the wall rather than having to be inserted by a longitudinal movement as would be the case 25 if the grooves were undercut and the splines cor respondingly shaped. Preferably all the boun dary surfaces should be adhesively united so as to produce the strongest and most durable joint. Various methods may be used for forming the 30 spline groove. One method permits the use of ordinary studs which are not previously grooved and also the erection of panels fixed to the Wall with the customary contacting butt joints. In this case, when cutting the groove with the router, a straight-edge guide is temporarily held on the wall parallel with and a slight distance to one side of the panel joint and the router is provided with a collar which acts as a guide by running against the straight edge while the 40 lower face of the collar which is smooth also acts as a guide to regulate the depth to which the spline groove is cut. In that case, the router bit forms the entire groove, such as is shown in Fig. 2, for example, for the spline, including 45 the portion which enters the face of the stlid, as Well as the portion formed in the edges4 óf the abutting panels. Other modified methods of forming the groove will be apparent to any skilled workman. , This method is very effective and useful for 50 the construction of paneled walls surfaced either , with plywood or artificial boards. In the pre ferred form the important advantage is secured of an adhesive union of all the cooperating sur 55 faces which handle the stresses towhich a panel joint is subjected. No previous method, so far as I am aware, secures this complete tying to gether of all the elements. It is noted that the form of spline joint shown, for example, in Fig. 2, securely ties the panel edges to the stud be cause of the outwardly enlarging form of the groove so that they cannot come loose from it and also is not adversely affected by lack of com plete straightness originally in the adjacent panel edges. The method is also convenient, inexpensive and practical under present day conditions where the majority of dwelling houses are built by con tractors who make use of electric power operated tools on the construction job. Under such condi tions a small portable electric drill fitted with the correct router bit, rapidly and accurately forms the spline grooves, and with a supply of suitable splines which can be cheaply prepared in any well equipped woodworking shop, an inexpensive and highly effective solution of the panel jomt problem is provided. Othe modes of applying the principle of the 20 invention may be employed, change being made as regards the details described, provided the features-stated in any of the following claims, or the equivalent of such, be employed. I claim: , 1. Wall structure of wood or the like compris 25 ing facing panels having spaced-apartv edges, a common supporting framing member behind said panels and lapping the adjacent margins of the latter, said margins being inthe same plane, 30 means securing said margins to said member, said member having a recess between said panel edges so that an- outwardly unrestricted groove of uniform cross-section is provided having boun dary surfaces including the lateral walls of said recess and the panel edges, and a spline Secured in said groove and filling the same cross-section ally, said spline having an exposed front surface forming a part of the face of the wall structure. 2. Wall structure of Wood or the like compris 40 ing facing panels having spaced-apart edges, a common supporting framing member behind said panels' and lapping the adjacent margins of the latter, said margins being in the same plane, means securing said margins to said member, said member having a recess between-said panel edges so that an outwardly unrestricted groove of uniform cross-section is provided having boundary surfaces including the lateral walls of said recess and the panel edges, and a spline in said groove filling the same cross-sectionally, 50 said spline'being secured in said groove by ad hesive union with all the boundary surfaces of the latter and having an exposed front sur face forming a part of the face of the wall struc ture. . ' ERWIN A. HORN.