DE488765C - Method of bending wood - Google Patents

Method of bending wood

Info

Publication number
DE488765C
DE488765C DEG68885D DEG0068885D DE488765C DE 488765 C DE488765 C DE 488765C DE G68885 D DEG68885 D DE G68885D DE G0068885 D DEG0068885 D DE G0068885D DE 488765 C DE488765 C DE 488765C
Authority
DE
Germany
Prior art keywords
wood
steaming
air pressure
steam
boiling
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
Application number
DEG68885D
Other languages
German (de)
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.)
HOLZVEREDELUNG M B H GES
Original Assignee
HOLZVEREDELUNG M B H GES
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 HOLZVEREDELUNG M B H GES filed Critical HOLZVEREDELUNG M B H GES
Priority to DEG68885D priority Critical patent/DE488765C/en
Application granted granted Critical
Publication of DE488765C publication Critical patent/DE488765C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/06—Softening or hardening of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
    • B27M1/02—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by compressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K1/00—Damping wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/001—Heating

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Description

Verfahren zum Biegsammachen von Holz Das Verfahren zum Dauerndbiegsammachen von Holz nach dem Patent 318 197 K1. 38/t durch Kochen oder Dämpfen des Holzes und Stauchen des derart erweichten Holzes in oder im wesentlichen in Faserrichtung läßt sich, wie sich ergeben hat, dadurch wesentlich beschleunigen und das Holz in eine für das Stauchverfahren auch noch günstigere Beschaffenheit bringen, daß das Holz in an sich bekannter Weise unter vermindertem Luftdruck oder nachdem es einem verminderten Luftdruck ausgesetzt worden ist, gekocht oder gedämpft wird; hierdurch verkürzt sich die bisher für das Stauchfähigmachen erforderliche Zeit um etwa ein Drittel. Eine noch schnellere und noch gründlichere Erweichung des Holzes läßt sich auf diesem Wege nun noch dadurch erzielen, daß dem unter verminderten Luftdruck gesetzten Holz Dampf oder besser noch Dampf in Gegenwart von etwas Wasser nur für eine kurze Zeitspanne zugesetzt wird, etwa -,vährend 1/,; bis 1/s der insgesamt für das Erweichen erforderlichen Zeit, oder indem stattdessen in den das Holz enthaltenden luftverdünnten Raum lediglich eine geringe Menge heißes Wasser eingebracht wird und das Holz alsdann der Einwirkung jener Mittel :ohne weitere äußere Einwirkungen bis zur genügenden Erweichung überlassen wird; in diesem Fall beträgt die zur Erweichung des Holzes erforderliche Zeit etwa nur 1/3 bis 1/4 der bisher hierzu benötigten Zeit, und das Holz wird außerdem noch stärker und gleichmäßiger erweicht. Eine größere und gleichrnäßigere Erweichung des Holzes begünstigt nun seinerseits den Stauchprozeß und die hierdurch zu erzielende Biegefähigkeit des Holzes wesentlich. Die Struktur des Holzes ist nicht gleichmäßig, die mehr zur Rinde liegenden Teile sind durchlässiger als die mehr zum Kern des Stammes liegenden Teile, und es ist ferner auch die Struktur des Holzes in Faserrichtung und quer zur Faserrichtung verschieden. Durch eine Luftverdünnung vor dem Kochen oder Dämpfen oder besser noch während des Kochens oder Dämpfens werden nun die aus der verschiedenen Struktur des Holzes herrührenden Ungleichmäßigkeiten der Erweichung, wie sich ergeben hat, wesentlich vermindert, und infolgedessen wird auch das gestauchte Holz gleichmäßiger und in einem erhöhten Maße biegsamer als .bei dem bisher üblichen Verfahren.Method for bending wood. The method for continuously bending wood according to patent 318 197 K1. 38 / t by boiling or steaming the wood and compressing the wood softened in this way in or essentially in the direction of the grain can, as has been shown, be significantly accelerated and bring the wood into a quality that is also more favorable for the upsetting process, so that the wood in is boiled or steamed in a manner known per se under reduced air pressure or after it has been exposed to reduced air pressure; this shortens the time previously required for making it compressible by about a third. An even faster and even more thorough softening of the wood can be achieved in this way by adding steam or, better still, steam in the presence of a little water to the wood, which is placed under reduced air pressure, only for a short period of time, for example - for 1 / ,; up to 1 / s of the total time required for softening, or by introducing only a small amount of hot water into the air-diluted space containing the wood and then leaving the wood to the action of those agents: without further external influences until it is sufficiently softened; in this case, the time required for softening the wood is only about 1/3 to 1/4 of the time previously required for this, and the wood is also softened more and more evenly. A greater and more uniform softening of the wood now for its part significantly favors the upsetting process and the flexibility of the wood to be achieved as a result. The structure of the wood is not uniform, the parts that are closer to the bark are more permeable than those parts that are closer to the core of the trunk, and the structure of the wood is also different in the direction of the grain and across the direction of the grain. By diluting the air before cooking or steaming, or better still during cooking or steaming, the unevenness of the softening resulting from the different structure of the wood, as has been shown, is now substantially reduced, and consequently the compressed wood is also more uniform and increased Dimensions more flexible than .with the previously usual method.

Das Verfahren kann in beliebigen an eine Luftpumpe anschließbaren Behältern oder Räumen durchgeführt werden, und das Holz kann hierbei auch in Abständen übereinander geschichtet sein.The method can be connected to any air pump Containers or rooms are carried out, and the wood can also be used at intervals be layered on top of each other.

Claims (1)

PES Tr_rrTANsrRÜCHE: i. Verfahren zum "Dauerndweichbiegsammachen von Holz durch Kochen oder Dämpfen des Holzes und Stauchen des derart erweichten Holzes in oder im wesentlichen in Faserrichtung, dadurch gekennzeichnet, daß zwecks Begünstigung des Stauchvorganges das Kochen oder Dämpfen, des Holzes in an sich bekannter Weise unter vermindertem Luftdruck erfolgt. a. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß dem unter vermin>-- . dertem Luftdruck stehenden Holz Dampf oder besser noch Dampf in Gegenwart von Wasser nur während eines Bruchteils der zu seinem Erweichen erforderlichen Zeit zugesetzt wird oder in den luftverdünnten Raum lediglich heißes Wasser eingebracht und das Holz für -den Rest der Erweichungszeit diesen Mitteln ohne weitere äußere Einwirkungen überlassen wird.PES Tr_rrTANsrRÜCHE: i. Method for "permanent flexible bending Wood by boiling or steaming the wood and upsetting the wood softened in this way in or essentially in the direction of the fibers, characterized in that for the purpose of favoring of Upsetting process boiling or steaming the wood in a known manner reduced air pressure. a. Method according to claim i, characterized in that that under vermin> -. Wood steam at the same air pressure or better still Steam in the presence of water only for a fraction of that to soften it required time is added or only hot in the air-diluted room Water introduced and the wood for the rest of the softening time these funds is left without further external influences.
DEG68885D 1926-12-07 1926-12-07 Method of bending wood Expired DE488765C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG68885D DE488765C (en) 1926-12-07 1926-12-07 Method of bending wood

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG68885D DE488765C (en) 1926-12-07 1926-12-07 Method of bending wood

Publications (1)

Publication Number Publication Date
DE488765C true DE488765C (en) 1930-01-10

Family

ID=7134515

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG68885D Expired DE488765C (en) 1926-12-07 1926-12-07 Method of bending wood

Country Status (1)

Country Link
DE (1) DE488765C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE946479C (en) * 1943-01-17 1956-08-02 Agnes Thurn Process for producing soft, pliable wood

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE946479C (en) * 1943-01-17 1956-08-02 Agnes Thurn Process for producing soft, pliable wood

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