EP0018329A1 - Tongue and groove board with spacers permitting expansion - Google Patents
Tongue and groove board with spacers permitting expansion Download PDFInfo
- Publication number
- EP0018329A1 EP0018329A1 EP80810131A EP80810131A EP0018329A1 EP 0018329 A1 EP0018329 A1 EP 0018329A1 EP 80810131 A EP80810131 A EP 80810131A EP 80810131 A EP80810131 A EP 80810131A EP 0018329 A1 EP0018329 A1 EP 0018329A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- projections
- boards
- board
- groove
- rib
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/10—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements of wood or with an outer layer of wood
Definitions
- the present invention avoids this additional expense, by providing on what would otherwise be abutting surfaces of the boards, projections which have a low mechanical resistance to compression. During assembly of the boards, these projections space the boards apart at the proper mutual distance, but compress during expansion of the boards, thereby preventing buckling of the assembly of boards.
- the projections are spaced apart and formed from a continuous rib of preferably triangular cross section, which has been formed on the bottom of the groove of each board.
- the rib is formed by milling, the mill thus having peripheral V-shaped grooves if the rib is to be triangular.
- the spacing of the projections is obtained by compressing the rib bv means of a disc which has at its periphery the contour of the groove without the rib, and which has spaced apart about its periphery a plurality of recesses whose peripheral extent is less than the spacing between the recesses, whereby the disc between the recesses compresses the rib to the level of the floor of the groove and leaves spaced projections at the locations of the recesses on the disc.
- a hoard 1 of known type generally of deal, commonly called "match- board”
- a groove 2 extending lengthwise thereof along one edge
- a tongue 3 extending lengthwise thereof along the other edge of the board.
- groove 2 is deepened by means of a mill (not shown) modified for this purpose so as to form on the bottom 2' of the groove a continuous rib 4 which is preferably of triangular cross section.
- Rib 4 is then flattened at spaced intervals with the disc 5 shown in Fig. 4.
- Disc 5 has peripheral cavities 6, 6', 6" but is otherwise of cylindrical cross-sectional configuration, these cavities being spaced apart by partcylindrical sections 5', 5" which serve to compress rib 4 along the lines 8', 8" shown in Fig. 3, so as to leave projections 4', 4", 4"' spaced apart from each other a distance greater than the length of the projections.
- most of rib 4 has been flattened by disc 5.
- the assembly of the boards is shown in Fig. 5.
- the tongue 3 of one board penetrates into the groove 2 of the other until the edge 3' of the tongue comes into contact with projections 4', 4", etc. of the other board, the two boards 1 and 1' are automatically mutually spaced to provide a space 7 therebetween, that is, by a distance "d" which allows for expansion of the boards without causing buckling and without the need to une :separate spacers during assembly of the boards.
- the projections 4', 4", etc. compress easily in view of their low mechanical resistance to compression, and space 7 closes.
- the boards of the present invention can be not only of wood, but also of composites such as particle board or chip board or the like.
- the projections 4', 4", etc. can be formed instead on edge 3' of tongue 3.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Finishing Walls (AREA)
- Connection Of Plates (AREA)
Abstract
Description
- It is known that, in the assembly of tongue and groove boards, an interspace of about 1-2 mm must be maintained between what would otherwise be abutting surfaces of adjacent boards, in order to allow for expansion due to swelling caused by humidity or by a rise in temperature, without buckling the assembly of the boards.
- In the past, it has been necessary to fit spacers between the boards in order to achieve this; and this is of course time consuming and expensive.
- The present invention avoids this additional expense, by providing on what would otherwise be abutting surfaces of the boards, projections which have a low mechanical resistance to compression. During assembly of the boards, these projections space the boards apart at the proper mutual distance, but compress during expansion of the boards, thereby preventing buckling of the assembly of boards.
- It is accordingly an object of the present invention to provide a method of making tongue and groove boards, and to provide boards made by that method, in which the spacing projections are formed from at least one of the parts forming the joint, these projections being adapted to keep the adjacent boards spaced apart at the proper distance during assembly but allowing compression of the projections duning expansion of the boards, thereby to prevent buckline.
- In accordance with a preferred embodiment of the invention, the projections are spaced apart and formed from a continuous rib of preferably triangular cross section, which has been formed on the bottom of the groove of each board.
- The rib is formed by milling, the mill thus having peripheral V-shaped grooves if the rib is to be triangular. The spacing of the projections is obtained by compressing the rib bv means of a disc which has at its periphery the contour of the groove without the rib, and which has spaced apart about its periphery a plurality of recesses whose peripheral extent is less than the spacing between the recesses, whereby the disc between the recesses compresses the rib to the level of the floor of the groove and leaves spaced projections at the locations of the recesses on the disc.
- These and other objects, features and advantages of the present invention will become apparent from a consideration of the follwing description, taken in connection whith the accompanying drawing, in which:
- Figure 1 is a cross-sectional view of a known type of tongue and groove board;
- Figure 2 is a cross section of a board according to the present invention, at an intermediate stage of manufacture, that is, having a rib at the bottom of the groove;
- Figure 3 is a cross-sectional view taken on the line III-III of Fig. 2, and showing the completed board according to the present invention, that is, having spaced projections at the bottom of the groove;
- Figure 4 is a fragmentary elevation view of the disc used to flatten spaced portions of the rib so as to obtain spaced projections at the bottom of the groover and
- Figure 5 is a plan view, with parts broken away, of an assembly of tongue and groove boards according to the present invention.
- Referring now to the drawings in greater detail, and first to Fig. 1 thereof, there is shown a cross section of a
hoard 1 of known type, generally of deal, commonly called "match- board", having agroove 2 extending lengthwise thereof along one edge and atongue 3 extending lengthwise thereof along the other edge of the board. - According to the present invention, as seen in Fig. 2,
groove 2 is deepened by means of a mill (not shown) modified for this purpose so as to form on the bottom 2' of the groove acontinuous rib 4 which is preferably of triangular cross section. -
Rib 4 is then flattened at spaced intervals with thedisc 5 shown in Fig. 4.Disc 5 hasperipheral cavities partcylindrical sections 5', 5" which serve to compressrib 4 along thelines 8', 8" shown in Fig. 3, so as to leaveprojections 4', 4", 4"' spaced apart from each other a distance greater than the length of the projections. In other words, most ofrib 4 has been flattened bydisc 5. - The assembly of the boards is shown in Fig. 5. By assembling two
boards 1, 1' like those shown in Fig. 3, thetongue 3 of one board penetrates into thegroove 2 of the other until the edge 3' of the tongue comes into contact withprojections 4', 4", etc. of the other board, the twoboards 1 and 1' are automatically mutually spaced to provide aspace 7 therebetween, that is, by a distance "d" which allows for expansion of the boards without causing buckling and without the need to une :separate spacers during assembly of the boards. - Thus, when the boards expand, for example by swelling as a result of humidity or increase in temperature, the
projections 4', 4", etc. compress easily in view of their low mechanical resistance to compression, andspace 7 closes. - From a consideration of the foregoing disclosure, therefore, it will be evident that the initially recited object of the present invention has been achieved.
- Although the present invention has been described and illustrated in connection with a preferred embodiment, it is to be understood that modifications and variations may be resorted to without departing from the spirit of the invention, as those skilled in this art will readily understand. For example, the boards of the present invention can be not only of wood, but also of composites such as particle board or chip board or the like. Also, the
projections 4', 4", etc. can be formed instead on edge 3' oftongue 3. These and other modifications and variations are considered to be within the purview and scope of the present invention as defined by the appended claims.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT80810131T ATE1915T1 (en) | 1979-04-23 | 1980-04-18 | BOARD WITH TONGUE AND GROOVES, FITTED WITH SPACING ELEMENTS ALLOWING DILATION. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH381979A CH633063A5 (en) | 1979-04-23 | 1979-04-23 | PROCEDURE FOR CREATING STRIPES INTENDED TO JOIN LATERALLY WITH INTERSPACES FOR EXPANSION AND STRIP MADE WITH THE PROCEDURE. |
CH3819/79 | 1979-04-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0018329A1 true EP0018329A1 (en) | 1980-10-29 |
EP0018329B1 EP0018329B1 (en) | 1982-12-01 |
Family
ID=4264142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80810131A Expired EP0018329B1 (en) | 1979-04-23 | 1980-04-18 | Tongue and groove board with spacers permitting expansion |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0018329B1 (en) |
AT (1) | ATE1915T1 (en) |
CA (1) | CA1131873A (en) |
CH (1) | CH633063A5 (en) |
DE (1) | DE3061198D1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4453352A (en) * | 1982-08-18 | 1984-06-12 | Kaiser Aluminum & Chemical Corporation | Refractory brick with expansion allowance |
WO1985000844A1 (en) * | 1983-08-17 | 1985-02-28 | Kipptorbau Pfullendorf Gebhard Hügle Gmbh & Co. Kg | Wood panelling from profiled boards |
US7360336B2 (en) * | 2003-06-17 | 2008-04-22 | E. Van Zanten Holding B.V. | Plant base |
EP2644478B1 (en) | 2012-03-27 | 2018-05-09 | UPM Plywood Oy | Plywood Panel |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2110729A (en) * | 1933-01-03 | 1938-03-08 | Certain Teed Prod Corp | Construction material |
US3987599A (en) * | 1975-06-30 | 1976-10-26 | Potlatch Corporation | Wood paneling |
FR2425306A1 (en) * | 1978-05-08 | 1979-12-07 | Pasquet Roger | Tongue and groove joint for wainscoting - includes triangular rib inside groove to be broken by tongue when panels swell and prevent warping |
-
1979
- 1979-04-23 CH CH381979A patent/CH633063A5/en not_active IP Right Cessation
-
1980
- 1980-04-18 AT AT80810131T patent/ATE1915T1/en not_active IP Right Cessation
- 1980-04-18 DE DE8080810131T patent/DE3061198D1/en not_active Expired
- 1980-04-18 EP EP80810131A patent/EP0018329B1/en not_active Expired
- 1980-04-22 CA CA350,398A patent/CA1131873A/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2110729A (en) * | 1933-01-03 | 1938-03-08 | Certain Teed Prod Corp | Construction material |
US3987599A (en) * | 1975-06-30 | 1976-10-26 | Potlatch Corporation | Wood paneling |
FR2425306A1 (en) * | 1978-05-08 | 1979-12-07 | Pasquet Roger | Tongue and groove joint for wainscoting - includes triangular rib inside groove to be broken by tongue when panels swell and prevent warping |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4453352A (en) * | 1982-08-18 | 1984-06-12 | Kaiser Aluminum & Chemical Corporation | Refractory brick with expansion allowance |
WO1985000844A1 (en) * | 1983-08-17 | 1985-02-28 | Kipptorbau Pfullendorf Gebhard Hügle Gmbh & Co. Kg | Wood panelling from profiled boards |
EP0137204A1 (en) * | 1983-08-17 | 1985-04-17 | Kipptorbau Pfullendorf Gebhard Hügle GmbH & Co. KG | Timbering of profiled boards |
US7360336B2 (en) * | 2003-06-17 | 2008-04-22 | E. Van Zanten Holding B.V. | Plant base |
EP2644478B1 (en) | 2012-03-27 | 2018-05-09 | UPM Plywood Oy | Plywood Panel |
Also Published As
Publication number | Publication date |
---|---|
EP0018329B1 (en) | 1982-12-01 |
CA1131873A (en) | 1982-09-21 |
ATE1915T1 (en) | 1982-12-15 |
DE3061198D1 (en) | 1983-01-05 |
CH633063A5 (en) | 1982-11-15 |
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