US2482405A - Wooden slab for building purposes - Google Patents

Wooden slab for building purposes Download PDF

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Publication number
US2482405A
US2482405A US720377A US72037747A US2482405A US 2482405 A US2482405 A US 2482405A US 720377 A US720377 A US 720377A US 72037747 A US72037747 A US 72037747A US 2482405 A US2482405 A US 2482405A
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slab
pieces
boards
board
building purposes
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US720377A
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Edlund Uno Ivan Samuel
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/12—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of solid wood
    • E04C2/14—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of solid wood reinforced

Definitions

  • the present invention relates to the manufacture of reinforced wooden elements, or slabs, of flat shape especially for use in setting up moulds for concrete constructions.
  • Said elements according to the invention are built of pieces of board with their longer edges abutting against each other, said pieces of board being connected together, in part, by means of corrugated fasteners arranged so as to cross the joints substantially under right angles and, in part, by means of metallic bars engaging grooves formed in the ends of the connected boards which are sealed in this engagement by means of appropriate cramp-irons or the like.
  • Said corrugated fasteners permit expansion of the boards owing to moisture and effect contractions thereof when the boards again become dry.
  • the rods or bars engaging the grooves at the ends of the boards tend to maintain the boards of an element in the same plane, so as to prevent the element as a whole from warping Ywhile at same time armouring and stiiening it.
  • Fig. 1 is a plan view of a slab constructed in accordance with this invention.
  • Fig. 2 is a side view as seen in the direction of line II-II of Fig. 1.
  • Fig. 31 s an end View.
  • Figs. 4 and 5 are detail views on a larger scale showing a corrugated fastener as seen from its edge and in plan View, respectively.
  • a wooden element, or slab, according to this invention is built up of a number of pieces of board l, with their longer edges abutting against each other or engaging each other by means of tongues and grooves.
  • corrugated fasteners 2 are utilized, which are driven into the pieces of board so as to cross the joints therebetween, substantially at right angles.
  • Such fasteners may be used either on one surface of the slab only or on both surfaces thereof.
  • the fasteners on one surface in the direction of the joints with relation to those on the other surface as will appear from Fig. 2.
  • Figs. 4 and 5 a separate fastener is illustrated.
  • the fastening elements due to their corrugated Vshape allow expansions of the slab under the iniluence of moisture and act to draw the pieces of boards together when dried so as to avoid gaps between the individual pieces of board.
  • each groove receiving a rod or bar that extends substantially over the entire width of the slab.
  • cramp-irons 4 are used, which are driven into the pieces of board.
  • each rod or bar is sharpened to a point and bent so as to form a nail 5 that may be driven into the wood of the respective board.
  • the rods or bars 3 act to maintain the boards of an element, or slab, in at state, thereby stifening it and keeping it from warping.
  • a wooden element for use in setting up moulds for concrete constructions comprising in combination, a set of pieces of boards placed with their longer ⁇ edges abutting each other, so as to form a plane slab, said slab having grooves in Opposite ends thereof the grooves at the respective ends being in alignment with each other, corrugated elastic metal fasteners driven into adjacent pieces of boards across the joints therebetween for keeping each two pieces of boards together while allowing expansion thereof under the influence of moisture and for positively drawing them close to each other when they become dry and contract, each such fastener to this end being of a length -considerably shorter than the width of a piece of board, and metallic bars in said grooves, means for securing said bars against dislodgment from the grooves, said bars providing a flat state of the slab under variable conditions.
  • each metallic bar is formed with a bent pointed end for acting as a nail in ensagement with the material of the slab.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)

Description

Sept. 20, 1949. u. l.` s. l-:DLUND l 2,482,405
WOODEN SLAB FOR BUILDING PURPOSES Filed Jan. 6, 1947 E g4. MM5@ @JMW Patented Sept. 20, 1949 2,482,405 WOODEN SLAB FOR BUILDING PURPOSES Uno Ivan Samuel Edlund, Akers Styckebruk, Y
Sweden Application January 6, 1947, Serial No. 720,377
In Sweden Sep 2 Claims.
The present invention relates to the manufacture of reinforced wooden elements, or slabs, of flat shape especially for use in setting up moulds for concrete constructions.
Said elements according to the invention are built of pieces of board with their longer edges abutting against each other, said pieces of board being connected together, in part, by means of corrugated fasteners arranged so as to cross the joints substantially under right angles and, in part, by means of metallic bars engaging grooves formed in the ends of the connected boards which are sealed in this engagement by means of appropriate cramp-irons or the like. Said corrugated fasteners permit expansion of the boards owing to moisture and effect contractions thereof when the boards again become dry. The rods or bars engaging the grooves at the ends of the boards tend to maintain the boards of an element in the same plane, so as to prevent the element as a whole from warping Ywhile at same time armouring and stiiening it. f
In the accompanying drawing an embodiment of the invention is shown by way of example.
Fig. 1 is a plan view of a slab constructed in accordance with this invention. Fig. 2 is a side view as seen in the direction of line II-II of Fig. 1. Fig. 31s an end View. Figs. 4 and 5 are detail views on a larger scale showing a corrugated fastener as seen from its edge and in plan View, respectively.
A wooden element, or slab, according to this invention is built up of a number of pieces of board l, with their longer edges abutting against each other or engaging each other by means of tongues and grooves.
To hold the pieces of board together corrugated fasteners 2 are utilized, which are driven into the pieces of board so as to cross the joints therebetween, substantially at right angles. Such fasteners may be used either on one surface of the slab only or on both surfaces thereof. In the said last-mentioned case the fasteners on one surface in the direction of the joints with relation to those on the other surface, as will appear from Fig. 2. In Figs. 4 and 5 a separate fastener is illustrated. Y
The fastening elements due to their corrugated Vshape allow expansions of the slab under the iniluence of moisture and act to draw the pieces of boards together when dried so as to avoid gaps between the individual pieces of board.
To hold the slab flat under all conditions and guide them under the said expansions and contember 21, 1943 it is preferred to displace y tractions rods or bars 3 are used, let into grooves formed at the ends of the slab, each groove receiving a rod or bar that extends substantially over the entire width of the slab. To seal the rods or bars in the grooves cramp-irons 4 are used, which are driven into the pieces of board. At one end each rod or bar is sharpened to a point and bent so as to form a nail 5 that may be driven into the wood of the respective board. The rods or bars 3 act to maintain the boards of an element, or slab, in at state, thereby stifening it and keeping it from warping.
What I claim is:
1. A wooden element for use in setting up moulds for concrete constructions, comprising in combination, a set of pieces of boards placed with their longer `edges abutting each other, so as to form a plane slab, said slab having grooves in Opposite ends thereof the grooves at the respective ends being in alignment with each other, corrugated elastic metal fasteners driven into adjacent pieces of boards across the joints therebetween for keeping each two pieces of boards together while allowing expansion thereof under the influence of moisture and for positively drawing them close to each other when they become dry and contract, each such fastener to this end being of a length -considerably shorter than the width of a piece of board, and metallic bars in said grooves, means for securing said bars against dislodgment from the grooves, said bars providing a flat state of the slab under variable conditions.
2. Anelement as claimed in claim 1, and in which one end of each metallic bar is formed with a bent pointed end for acting as a nail in ensagement with the material of the slab.
UNO IVAN SAMUEL EDLUND.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 666,345 Goehst Jan. 22, 1901 2,143,764 DeWitt Jan. 10, 1939 2,276,170 Elmendorf Mar. 10, 1942 FOREIGN PATENTS 5 Number Country Date 21,343 Great Britain Oct. 11, 1898 4,947 Great Britain Mar. 1, 1907 115,433 Sweden Nov. 27, 1945
US720377A 1943-09-21 1947-01-06 Wooden slab for building purposes Expired - Lifetime US2482405A (en)

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SE2482405X 1943-09-21

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843885A (en) * 1955-06-06 1958-07-22 Jeantelot Maurice Aristide Process for making wooden floor panels
US2859490A (en) * 1953-03-13 1958-11-11 Cestarelli Lucio Flooring section
US2967343A (en) * 1952-12-02 1961-01-10 Chester I Williams Cantilever form
US3223131A (en) * 1961-03-17 1965-12-14 Roy M Hovermale Apparatus for forming transversely reinforced wood planks
US5027551A (en) * 1990-02-28 1991-07-02 Rodriguez Lazaro E Decorative lawn edging package
US6418681B1 (en) 2000-09-21 2002-07-16 James E. Dunks Modular temporary barrier system comprising foam core panels with peg-receiving apertures on the sides and u-shaped connector receiving portions on the top and bottom

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189821343A (en) * 1898-10-11 1899-10-07 James Hawley Improvements in Pressing and Securing Sectional Blocks of Timber to Form Rectangular or Square Blocks.
US666345A (en) * 1900-10-03 1901-01-22 Edward Goehst Floor.
GB190704947A (en) * 1907-03-01 1907-07-11 John Titley Improvements in the Manufacture of Wood Paving Blocks.
US2143764A (en) * 1936-03-30 1939-01-10 Holt Hardwood Company Parquetry flooring block
US2276170A (en) * 1940-10-26 1942-03-10 Elmendorf Armin Siding for buildings

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189821343A (en) * 1898-10-11 1899-10-07 James Hawley Improvements in Pressing and Securing Sectional Blocks of Timber to Form Rectangular or Square Blocks.
US666345A (en) * 1900-10-03 1901-01-22 Edward Goehst Floor.
GB190704947A (en) * 1907-03-01 1907-07-11 John Titley Improvements in the Manufacture of Wood Paving Blocks.
US2143764A (en) * 1936-03-30 1939-01-10 Holt Hardwood Company Parquetry flooring block
US2276170A (en) * 1940-10-26 1942-03-10 Elmendorf Armin Siding for buildings

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967343A (en) * 1952-12-02 1961-01-10 Chester I Williams Cantilever form
US2859490A (en) * 1953-03-13 1958-11-11 Cestarelli Lucio Flooring section
US2843885A (en) * 1955-06-06 1958-07-22 Jeantelot Maurice Aristide Process for making wooden floor panels
US3223131A (en) * 1961-03-17 1965-12-14 Roy M Hovermale Apparatus for forming transversely reinforced wood planks
US5027551A (en) * 1990-02-28 1991-07-02 Rodriguez Lazaro E Decorative lawn edging package
US6418681B1 (en) 2000-09-21 2002-07-16 James E. Dunks Modular temporary barrier system comprising foam core panels with peg-receiving apertures on the sides and u-shaped connector receiving portions on the top and bottom

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