US1770507A - Synthetic lumber - Google Patents

Synthetic lumber Download PDF

Info

Publication number
US1770507A
US1770507A US149764A US14976426A US1770507A US 1770507 A US1770507 A US 1770507A US 149764 A US149764 A US 149764A US 14976426 A US14976426 A US 14976426A US 1770507 A US1770507 A US 1770507A
Authority
US
United States
Prior art keywords
lumber
board
ber
cementitious
qualities
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.)
Expired - Lifetime
Application number
US149764A
Inventor
Albert F Bemis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bemis Industries Inc
Original Assignee
Bemis Industries Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bemis Industries Inc filed Critical Bemis Industries Inc
Priority to US149764A priority Critical patent/US1770507A/en
Application granted granted Critical
Publication of US1770507A publication Critical patent/US1770507A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/288Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material

Definitions

  • the invention more particularly pertains structural to the formation of composite lumber fromv4 loshcets or laminations of fibrous material prefof high humidity.
  • the fiber -board is provided with a rough, irregular, or
  • slabs of cementitious material such as gypsum
  • thin fibrous covering sheets of flexible material such as paper or cardboard
  • slabs of this character having low tensile and bending strength, poor heat insulating qualities, comparatively poor nailing qualities and a tendency to break or crack easily, as well as being l particularly difficult to ship and handle.
  • the present invention by combining the characteristics of the separate materials indicated above provides a building material which has the advantages common to both of the ty es of materialpreviously used, with the disa vantages thereof reduced in degree or eliminated, thus being suited to a wide range of uses.
  • the synthetic lumber disclosed herein which comprises fiber boards located at either side" of a frangible core, has compartively good tensile and bending strength aswell as a satisfactory degree of compressive strength and does not have an objectional 5e. tendency4 to swell or warp under vconditions ythe material.
  • composition lumber herein disclosed may be made of many suitable materials, but preferably includes outer layers of fiber board so having considerable inherent stiffness or tensile strength, for instance, material formed of felted vegetable fibers such as wood bers, or material, which is made from bagasse fibers v which have been only partially cooked and a5 therefore retain substantially .all their original strength; these materials possessing numerous interstices or air cells so that their heat insulating qualities are comparatively' high and having rough, somewhat vlllous Sul- 'faces to permit'mtimate bonding with cementitious material. Rather than material of this character a ber board having the characteristics commonly associated with other ordinary fibrous wall boards may be used.
  • the thickness of the gypsum layer and of each of the ber boards preferiably may be substantially equal, but the thickness of the laminations may be somewhat varied in order to adapt the lumber to individual uses and installations.
  • the ber board, insulite or celoteX layers may be made thicker, while in other cases where moisture resistance is a prime requisite, the inner gypsum core may be somewhat thicker.
  • the outer ber board laminations and the gypsum core may be unitedvby Yany suitable means, but preferably in such a manner that a rough brous surface of the board may firmly unite with the plastic material as it hardens, so that a strong union or bond is formed between the laminations of the lumber as designated by the numeral 8.
  • the outer layers will provide convenient means for applying stucco, plaster, or the like, due to the rough, brous surface which is a natural characteristic of this type of ber board; obviously, however, the lumber may be provided with a nished surface in any conventional manner, and in certain cases a gypsum slab may form an outer layer of the lumber.
  • Lumber may be readily handledland shaped
  • a sheeteof wall board comprising'outer layers of form retaining ber board and an intermediate frangible layer of cementitious material which is bound by its inherent adhesive nature to the ber board.
  • a sheet of Wall board comprising outer layers of form retaining ber board and an intermediate frangible layer, said ber board having a roughened outer surface suitable for holding laster or stucco.
  • a s eet of wall board comprising outer layers of form retaining ber board and an intermediate frangible layer, said ber board providing heat-insulating layers.
  • Synthetic lumber comprising alternate layers of stiff, substantially form-retaining ber board and of cementitious material, said ber board having rough surfaces bonded to the cementitious material, the outer faces of .said lumber being formed by the ber boards whereby the cementitious material is protected against breaking.
  • a sheet of artificial lumber having relatively thick, light, form-retaining layers of cellular fibrous material having numerous interstices, and an inner layer of cementitious material, said outer layers constituting cush- ⁇ ening means for the cementitious layer, and
  • a sheet of artificial lumber havingY light, form-retaining outer layers of cellular fibrous material having numerous interstices, and an inner layer of cementitious material, said outer layers constituting cushioning and sitesmng means for the cementitious layer, and providing a board having good nailing qualities, said outer .layers being of substanially the thickness of the inner cementiticus a er.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Finishing Walls (AREA)

Description

July 1.5, 1930. A- F- BEMIS 1,770,507
SYNTHETIC LUMBER Filed Nov. 20, 1926 Patented July l5, E93
ALBERT F. IBEMIS, OF NEWTON, MASSACHUSETTS, ASSIGNOR TO BEMIS INDUSTRIES, ING., OF BOSTON, MASSACHUSETTS, A CORPORATION OF DELAWARE SYNTHETIC LUMBEB Application led November 20, 1926. Serial No. 149,764.
tions of walls, floors or roofs and are required to have a moderate degree of strength.
The invention more particularly pertains structural to the formation of composite lumber fromv4 loshcets or laminations of fibrous material prefof high humidity. Preferably the fiber -board is provided with a rough, irregular, or
semi-villous surface whereby it'may be firmly bound to the cementitious core and whereby the outer surface of the lumber may be adapt- 55 ed to receive plaster, stucco, etc. In proportion to its strength and moisture resistant qualities it is comparatively light and may provide very good heat insulation, while having better nailing qualities than either the 60 conventional'ber board or the conventional gypsum slabs; and furthermore, it may be easily worked or shaped by ordinary carpenters tools and may be handled, piled and shipped without requiring special care. 65
erably liber boardand frangible plastic or a The above and further advantageous feacementitious material such as gypsum or the like. Heretofore it has been common in the art to provide thin ber boards which have had certain inherent defects, such as a tendency to warp, inability to resist moisture, exi cessive expansion and contraction, only moderate compressive and tensile strength, rather poor nalling qualities and the like. It has also been usual to provide slabs of cementitious material, such as gypsum, with thin fibrous covering sheets of flexible material, such as paper or cardboard; slabs of this character having low tensile and bending strength, poor heat insulating qualities, comparatively poor nailing qualities and a tendency to break or crack easily, as well as being l particularly difficult to ship and handle.
Furthermore, this material is comparatively.
heavy` in proportion to its heat insulating qualities and tensile or bending strength.
The present invention by combining the characteristics of the separate materials indicated above provides a building material which has the advantages common to both of the ty es of materialpreviously used, with the disa vantages thereof reduced in degree or eliminated, thus being suited to a wide range of uses. The synthetic lumber disclosed herein, which comprises fiber boards located at either side" of a frangible core, has compartively good tensile and bending strength aswell as a satisfactory degree of compressive strength and does not have an objectional 5e. tendency4 to swell or warp under vconditions ythe material.
The composition lumber herein disclosed may be made of many suitable materials, but preferably includes outer layers of fiber board so having considerable inherent stiffness or tensile strength, for instance, material formed of felted vegetable fibers such as wood bers, or material, which is made from bagasse fibers v which have been only partially cooked and a5 therefore retain substantially .all their original strength; these materials possessing numerous interstices or air cells so that their heat insulating qualities are comparatively' high and having rough, somewhat vlllous Sul- 'faces to permit'mtimate bonding with cementitious material. Rather than material of this character a ber board having the characteristics commonly associated with other ordinary fibrous wall boards may be used.
Between the liber boards 1 of such a character, is poured or otherwise located plastic material 2, such as calcined gypsum, with or without suitable aggregate; preferably pressure isthen applied to Ainsure intimate bond- -v ing of the bers and the plastic material. For manyipurposes the thickness of the gypsum layer and of each of the ber boards preferi ably may be substantially equal, but the thickness of the laminations may be somewhat varied in order to adapt the lumber to individual uses and installations. For example, in a case where heat insulation is'particularly desired, the ber board, insulite or celoteX layers may be made thicker, while in other cases where moisture resistance is a prime requisite, the inner gypsum core may be somewhat thicker. The outer ber board laminations and the gypsum core may be unitedvby Yany suitable means, but preferably in such a manner that a rough brous surface of the board may firmly unite with the plastic material as it hardens, so that a strong union or bond is formed between the laminations of the lumber as designated by the numeral 8.
When it is desired to provide thick slabs or beams of this material, it will ordinarily be found advantageous to use several laminations of cementitious Amaterial and of ber board in the manner illust-rated in Fig. 3
rather than using thicker layers of ber and gypsum..V
i omposite lumber of this type, which combines the separate advantages of the materials found therein, will be found adapted to a much wider variety of purposes. In its preferred embodiment when manufactured of materials such as referred to above, the outer layers will provide convenient means for applying stucco, plaster, or the like, due to the rough, brous surface which is a natural characteristic of this type of ber board; obviously, however, the lumber may be provided with a nished surface in any conventional manner, and in certain cases a gypsum slab may form an outer layer of the lumber. The
lumber may be readily handledland shaped,
- posesses greater structural strength and betternailing qualities than its component mai terials, and furthermore it provides satisfactory heat insulatiomdoes not tend to expand, Swell, or warp appreciably when exposed to high humidity or a high temperature and is comparatively re resistant, while it possesses the ability to absorb rather than reect sound waves.
I claim:
1. A sheeteof wall board comprising'outer layers of form retaining ber board and an intermediate frangible layer of cementitious material which is bound by its inherent adhesive nature to the ber board.
2. A sheet of Wall board comprising outer layers of form retaining ber board and an intermediate frangible layer, said ber board having a roughened outer surface suitable for holding laster or stucco.
3. A s eet of wall board comprising outer layers of form retaining ber board and an intermediate frangible layer, said ber board providing heat-insulating layers.
4. Synthetic lumber comprising alternate layers of stiff, substantially form-retaining ber board and of cementitious material, said ber board having rough surfaces bonded to the cementitious material, the outer faces of .said lumber being formed by the ber boards whereby the cementitious material is protected against breaking.
5. A sheet of artificial lumber having relatively thick, light, form-retaining layers of cellular fibrous material having numerous interstices, and an inner layer of cementitious material, said outer layers constituting cush-` ening means for the cementitious layer, and
providing a board having good nailing qualities, said outer layers being at least of approximately the thickness of.; said cementitious layer.
7. A sheet of artificial lumber havingY light, form-retaining outer layers of cellular fibrous material having numerous interstices, and an inner layer of cementitious material, said outer layers constituting cushioning and stiemng means for the cementitious layer, and providing a board having good nailing qualities, said outer .layers being of substanially the thickness of the inner cementiticus a er.
ySined b me at Boston, Massachusetts,
this ourth ay of November, 1926.
Y ALBERT F. BEMIS.
US149764A 1926-11-20 1926-11-20 Synthetic lumber Expired - Lifetime US1770507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US149764A US1770507A (en) 1926-11-20 1926-11-20 Synthetic lumber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US149764A US1770507A (en) 1926-11-20 1926-11-20 Synthetic lumber

Publications (1)

Publication Number Publication Date
US1770507A true US1770507A (en) 1930-07-15

Family

ID=22531695

Family Applications (1)

Application Number Title Priority Date Filing Date
US149764A Expired - Lifetime US1770507A (en) 1926-11-20 1926-11-20 Synthetic lumber

Country Status (1)

Country Link
US (1) US1770507A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489922A (en) * 1944-06-30 1949-11-29 Celotex Corp Composite wall panel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489922A (en) * 1944-06-30 1949-11-29 Celotex Corp Composite wall panel

Similar Documents

Publication Publication Date Title
US6599621B2 (en) High strength structural insulated panel
US5104715A (en) Tile formed of composite sheet with insulating board
US1808976A (en) Plaster board
US2234517A (en) Laminated building sheet
US2460309A (en) Panel structural unit
US2232762A (en) Composite panel board
US1172710A (en) Insulating-block for building purposes.
US2213249A (en) Insulation board and method of making the same
NO771734L (en) ELEMENT WALL WITH ELEMENTS THAT ARE ALONG THE OPPOSITE EDGE EDGES WITH A NOTE
US1709893A (en) Building unit
US2332703A (en) Cement-fiber board
US1770507A (en) Synthetic lumber
US3385019A (en) Wallboard and wall structure
US3878032A (en) Sound-reducing, composite converting panel
WO2020144113A1 (en) Panel suitable for assembling a floor covering
US1976684A (en) Structural material
US1638280A (en) Fabricated board
US2754235A (en) Thermal insulating wallboard
US4254178A (en) Material for producing a layered building panel
US11585089B2 (en) Lightweight, wood-free structural insulation sheathing
US1777872A (en) Plaster board
US1883486A (en) Laminated sheet material
US1520284A (en) Composite insulating board
US1362888A (en) Building material
US520123A (en) Augustine sackett