US1308372A - Joint - Google Patents

Description

B. C. ROCKWELL WOODEN STRUCTURE JOINT. PPLICATION FILED m4 Patented July 1, 1919.

moses 2;

UNITED STATES PATENT OFFICE.

em) 0. ROCKWELL, or cnivmnmnannivsns Application madam 5,1918 Seria1IiTol210,568.

To all whom it may concern:

Be it knownthat I, Bren G. RooKwnLL,

Camden, Arkansashave inventeda certain new and useful Improvement in Wooden- Structure Joints, of which the following is a full, clear, and exact description, such will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification."

My invention relates generallyto wooden structures and more specifically toa mortise and tenon jolnt and themethodfof producing same. it

- The joint resulting from the practising of my improved method is applicable fora wide variety of uses, for instance, in the formation of the walls of boxes or lilre corr tainers, for the sidewalls of the bodies of wagons carriages and the like, for interior finish andfittings, such as casings, wailinscoting and paneling, for the construction of slab doors, or in any structure wherein a number of pieces or sections of wood are glued together at their edges and connected at their ends to rails or framing members.

The principal object of my invention is to provide simple and efficient means for maintaining the panel strips or members in assembled relation and to provide simple means for squeezing together the tenon parts of two adjacent panel members, thereby forming and maintaining a perfect joint or glue line between said members.

Further objects of my invention are, to provide a mortise and tenon joint construction which can be produced very economically, thereby effecting a material saving in the manufacture of the finished pieces, and further to provide a construction wherein the parts are firmly secured in assembled relation.

With the foregoing and other objects in view, my invention consists in certain novel features of construction and arrangement of parts, hereinafter more fully described and claimed, and illustrated in the accompanying drawings, in which- Figure 1 is a perspective view of a panel constructed in accordance with my invention.

Fig. 2 is a perspective view of a rail in which is formed a series of mortises as contemplated by my invention.

Fig. 3 is a perspective view of a pair of be inserted into the mortise. Referring by numerals tothe accompanying drawings which illustrate a wooden structure produced in accordance with my "improved method, 10 designates a wooden or narrowest spendin mortlse.

woonun-s'raucruan Joint.

Paaneda i, 1919.

panel strips or members, the ends of which are-provlded with teno-ns. a citlzen of the United States, residing at Fig. 4: is asectional vlew of a structure made up ofa niunbcr ofparts, the same beinvention.

Fig. 5 is a vertlcal section taken approximately on the line 55 of Fig. 4. Fig. 6 is a detail sectional view of parts of astructure with the tenon in position to strip or rail in which is formed a series of mortises 11. The ends of the panel members 12 which are to be oined to member 10 are provided adj acfent to their edges with tenons 1 3,- the thickness or transverse dimension thereof being approximately equal to the dimension of the corre- The width of a pair of complementary tenons 13 is slightly greater than the greatest width of the corresponding mortise and thus, when a pair of the tenons are forced into the mortise, said tenons will necessarily be pressed or squeezed toward eachother in order to be properly seated in said mortise. The different dimensions just referred to are graphically illustrated in Fig. 6, wherein the dotted line 02 indicates the greatest width of the mortise and the dotted line 2 illustrates the greatest width of a complementary pair of the tenons. In order that a pair of the tenons will enter the mortise. the outer faces of said tenons are tapered or beveled as designated by 14.

When two or more of the panel members are assembled for connection to a rail memher, the edge of one panel member and its tenon is provided with a longitudinally disposed rib 15 and the edge of the adjacent panel member is provided with a longitudinally disposed groove .16. This tongue and groove arrangement is materially effective in maintaining the panel members in proper assembled relation and tendsto prevent the central portions thereof from warping or buckling away from each other.

Before two of the panel members are brought into assembled relation, the edges provided with the tongue and groove are coated with a suitable adhesive, such as glue, and thus when thetenons on the panels are :semble the forced into the mortises of the rail members, the joint or glue line between the panel members is made very tight, by virtue of the fact that the complementary tenon on the panels are squeezed or forced toward each other with considerable pressure While they are being forced into the mortises.

It will be understood, of course, that con siderable pressur is required to properly aspanels and rails of a structure, and for performing this operation I prefer to use a press operated by steam or any suitable power, and said press being of sufficient size to act simultaneously throughout the entire length of the assembled structure.

My improved method of producing joints can be very easily practised, is applicable for a wide Variety of uses, and by locating the tenons on the edges of the panel members and forming said tenons in complementary pairs, a very firm and substantial joint or glue line is formed between the meeting edges of the panels and said joint is main tained and supported by the pressure or squeeze imparted to the tenons when they are forced into the mortises.

I am aware that my improved joint structure is capable of various adaptations and modifications Without departing from the Copies of this patent may be obtained for five cents each, by addressing the spirit of the invention, the scope of which is set forth in the appended claims.

I claim:

1. In a permanent wooden joint structure a member having a mortise, a pair of panel members arranged edge to edge, the engaging edges of said panel members having a tongue andgroove connection, complementary tenons formed integral with and proj ecting outwardly from the ends of said panel members adjacent to the meeting edges thereof, the greatest width of the combined tenons being greater than the breadth of the mortise, and the outer ends of said tenons being tapered so as to readily enter the mortise.

2. In a permanent wooden joint structure a member having a mortise, a pair of panel members arranged edge to edge, complementary tenons formed integral with and projecting outwardly from the ends of said panel members adjacent to the meeting edges thereof, the width of the combined tenons being greater than the breadth of the mortise, and the outer ends of said tenons being tapered so as to readily enter the mortise.

In testimony whereof I hereunto aflix my signature, this 1st day of J any, 1918.

BYRD C. ROCKWELL.

Commissioner of Patents,

Washington, II). G.

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