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Publication numberUS2430200 A
Publication typeGrant
Publication dateNov 4, 1947
Filing dateNov 18, 1944
Priority dateNov 18, 1944
Publication numberUS 2430200 A, US 2430200A, US-A-2430200, US2430200 A, US2430200A
InventorsWilson Winfred E
Original AssigneeNina Mae Wilson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Lock joint
US 2430200 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

LOCK JOINT Filed Nov. 18, 1944 INVENTOR- 5 MNFREDEMLSONZ I ATTORNEY l 'atented Nov. 4, 1947 Winfred E. Wilson, Los-Angeles, of one-half; to Nina. Mae

Calif, assignor Wilson Application November 18, 1944, Serial No. 564,146

1 Claim.

This invention relates to lockjoints.

Specifically, the invention; contemplates improvements in lore-fabricated structures, such as may be formed from plywood. The present invention is adapted to be utilized for pre-fabricated structures to the extent that panels of said structures may be rapidly assembled with one surface of the panels in substantially flush relationship.

An object of the present invention is to provide a lock joint for interconnecting panels, which resists tension, compression, and shear stresses in the plane of the panels along and at a right angle to the joint.

The present invention is adapted for use with floors, roofs, wall surfaces, and like structural members. The invention will permit the standardization of sections for floors, roofs, and wall surfaces, thus resulting in a saving of field labor and the proper erection of dwellings of different types. Thus, by forming the sections of a given size, one man by following plans may erect a dwelling in a minimum of time with the use of simple tools, such as a hammer, saw, nails, and the like.

Those skilled in the art will readily appreciate the function to be performed by the present invention, and the invention is simple of structure, inexpensive in cost of manufacture, and capable of producing superior results.

With the above mentioned and other objects in view, the invention consists in the novel and useful provision, formation, construction, association, and relative arrangement of parts, members and features, all as shown in certain embodiments in the accompanying drawings, described generally, and more particularly pointed out in the claim.

In the drawings:

Figure 1 is a fragmentary plan view of a pair of panels held interlocked through the use of the present invention,

Figure 2 is a fragmentary side elevation look ing in the direction of the arrow 2 of Figure 1 and showing the lock joint,

' Figure 3 is a fragmentary perspective view illustrating one panel in the act of being interlocked with a second panel,

Figure 4 is a fragmentary perspective view of a modified form of one member'of the lock joint, and,

Figure 5 is a fragmentary perspective view of a second member of the lock joint for use with the device shown in Figure 4.

Referring now to the drawings, I have pro- 2. vided a pair of members i and 2 which may constitute panels, flooring, ceiling, a wall surface, roof or similar structure member, and which two members are adapted to be held in working relationship and against displacement laterally when two ofthe surfaces are flush, as illustrated. The surfaces referred to are the uppermost ones of the panels 5 and 2 as shown in Figure 2 at 3 and l. This interlocking action is obtained by providing one of the panels with a portion 5 depending from its lowermost surface'fi and which portion 5 cooperates with part 1 depending from the lower surface of member 2.

Portion 5 is constructed by providing a transverse web 8 spaced inwardly from and paralleling edge 9 of the panel, and which web has integrally or otherwise formed therewith base l0, which is spaced from the under surface 6 and extends forwardly of edge 9 a selected distance. Base i9 is provided with a heel comprising a transverse enlargement H which parallels the web 8, the upper surface I2 of which is spaced a slight distance below the plane of the under surface 6 of the panel. Enlargement H and edge 9 are beveled at l3 and I l, respectively.

The member 7 of the lock joint includes an enlargement formed on the under surface of panel 2, this enlargement having a beveled, edged heel i5, a plane surface It paralleling surface 4, with a tongue ll which extends beyond edge IQ of the panel. The tongue I? is beveled at IS. The beveled edge i5 is at the same angle as the beveled edge I3 of portion 5 and the thickness of part I? corresponds to the width of the groove in portion 5. This groove is, of course, formed by the web 8, the under surface 8 of the panel l and the surface I 6, the intention being that when part i is in the position shown in Figure 2 that the top surfaces 3 and 4 of the panels are flush.

In the form of the invention shown in Figures 4 and 5, the-projections or tongues ll of Figures 2 and 3 are serrated, as shown in Figure 5, at 23. The serration provides a spacing 2! between two projections. The other member adapted to interlock with the projections is provided with spaced blocks 22 confined in the recess or groove included between surfaces 6 and I6 and the web 8. Thus, the blocks are so spaced as to be received between pairs of projections 20 and within the space 2!. Other features remain the same as the structure of Figures 2 and 3.

The operation, uses and advantages of the invention just described are as follows:

When it is desired to rapidly assemble panels, the edges of which are to be interlocked, one of the panels may be tipped so that the projections or tongues ll will readily enter the recess or groove of the interlocking joint of the opposite panel as, for instance, illustrated in Figure 2. The beveled edge 14 of one panel member allows a ready entrance of the projection l1 within the recess of the other member of the lock joint. This member is, of course, moved into such position that the beveled edges l3 and I5 of the heels are in contiguous relationship, as shown in Figure 2.

In the form of the invention shown in Figures 2 and 3, it is obvious that this type of lock joint readily resists tension and compression in the plane of the panels at right angles to the joint.

In the case of the form of the invention shown in Figures 4 and 5, the serrated projections, by entering the serrated recesses not only provides a joint which resists tension and compression in the plane of the panels at right angles to the joint but, in addition, resists shear along the joint.

It is apparent that any edge of a panel may be provided with a lock joint member, depending on the pattern desired. Thus, the opposite parallel edge of panel I would be provided with a lock joint member like 1 and panel 2 with a lock joint member like 5. This provides for continuous interlocking of panel members, as desired.

I claim:

Means for interlocking two panels at an edge of each panel, including two members, both of which depend from their respective panels, one of said members provided with spaced recesses, a base extending forward of the edge of the panel, and a heel portion paralleling the edge of the panel; and said member secured to the other panel formed with spaced projections extending forwardly of the edge of said panel and with a heel portion; said projections adapted for reception in the spaced recesses of the other member to bring the top surfaces of the panels into flush relationship, the said heels of the said two members cooperating to prevent relative displacement of the two members and whereby the two members resist tension and compression in the plane of the panel members at right angles to the two panel members and shear lengthwise of the two members.

WINFRED E. WILSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 713,577 Wickham NOV. 11, 1902 1,015,584 Powell Jan. 23, 1912 213,740 Conner Apr. 1, 1879 2,371,856 Cade Mar. 15, 1921 2,360,933 Bunker Oct. 24, 19M

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Classifications
U.S. Classification52/588.1, 52/536, 52/538, 52/539
International ClassificationF16B5/00, E04F15/04, E04F13/10
Cooperative ClassificationE04F13/10, E04F2201/0153, F16B5/008, E04F15/04
European ClassificationE04F15/04, E04F13/10