DE578525C - Process for the production of a protective cover for wooden propellers - Google Patents

Process for the production of a protective cover for wooden propellers

Info

Publication number
DE578525C
DE578525C DES88504D DES0088504D DE578525C DE 578525 C DE578525 C DE 578525C DE S88504 D DES88504 D DE S88504D DE S0088504 D DES0088504 D DE S0088504D DE 578525 C DE578525 C DE 578525C
Authority
DE
Germany
Prior art keywords
wood
production
protective cover
pressure
wooden
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
DES88504D
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.)
GUSTAV SCHWARZ GmbH
Original Assignee
GUSTAV SCHWARZ GmbH
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 GUSTAV SCHWARZ GmbH filed Critical GUSTAV SCHWARZ GmbH
Priority to DES88504D priority Critical patent/DE578525C/en
Application granted granted Critical
Publication of DE578525C publication Critical patent/DE578525C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/16—Blades
    • B64C11/20—Constructional features
    • B64C11/205—Constructional features for protecting blades, e.g. coating

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Description

Der Druck, unter den nach dem Hauptpatent die Lösung des Überzugstoffes gesetzt wird, wird gemäß vorliegender Erfindung durch vorhergehende Herstellung eines Unterdruckes erzeugt, indem der die Luftschraube und die Lösung aufnehmende Behälter mit einer Saugpumpe in Verbindung gebracht wird. Dadurch wird zuerst die Luft aus dem Holz entfernt, so daß bei der darauf eintretenden Druckerhöhung der gelöste Überzugstoff tiefer in das Holz eindringen kann und nicht wieder daraus verdrängt wird. Bei stärkerem Unterdruck genügt für das Eintreiben des Überzugstoffes der äußere Atmosphärendruck durch Aufhebung des Unterdruckes, jedoch kann auch zum stärkeren Eintreiben des Überzugstoffes noch ein Über- " druck angewendet werden.The pressure under which, according to the main patent, the solution of the covering material is placed is, according to the present invention, by previously producing a negative pressure generated by the container containing the propeller and the solution is associated with a suction pump. This first removes the air from the wood, so that on it occurring pressure increase the dissolved coating material penetrate deeper into the wood can and will not be displaced from it again. With a stronger negative pressure is sufficient for that Driving in the cover material to the external atmospheric pressure by releasing the negative pressure, however, an over- " pressure can be applied.

Es war zwar bekannt, bei der HoIzkonservierung die Tränkflüssigkeit in das Holz in Kessem unter Anwendung zunächst von Vakuum und dann von Druck einzutreiben, doch bietet die Anwendung dieses bekannten Druckverfahrens für die Herstellung hölzerner Luftschrauben mit einem Überzug nach dem Hauptpatent besondere Vorteile.It was known that the soaking liquid was poured into the wood preservation Driving wood in kessem using first vacuum and then pressure, however, it offers the use of this known printing process for the manufacture of wooden propellers with a coating special advantages according to the main patent.

Denn während beim Tränken von Holz, die Tränkflüssigkeit, die das ganze Holz durchdringen soll, sehr dünnflüssig ist und infolgedessen auch von selbst völlig in das Holz eindringt, handelt es sich, beim vorliegenden Verfahren um die Verwendung viskoser Lösungen, die nicht von selbst so in das Holz eindringen, daß· sie den zu bildenden Überzug in den Poren verankern. Während daher die anfängliche Vakuumbildung "beim Tränken von Holz nur den Tränkungsvorgang beschleunigt, ermöglicht sie die Erzeugung eines fest im Holz verankerten Überzuges einer Luftschraube unter Anwendung eines geringeren Enddruckes als beim Verfahren des Hauptpatents.Because while soaking wood, the soaking liquid that penetrates the whole wood should, is very thin and consequently also completely into the wood by itself penetrates, the present method involves the use of viscous solutions, which do not penetrate the wood by themselves in such a way that they form the coating to be formed anchor in the pores. While, therefore, the initial vacuum "when soaking of wood only accelerates the impregnation process, it enables the production of a coating that is firmly anchored in the wood a propeller using a lower final pressure than in the process of the main patent.

Claims (1)

Patentanspruch:Claim: Verfahren zur Herstellung eines Schutzüberzuges für hölzerne Luftschrauben nach Patent 552908, gekennzeichnet durch die Anwendung zunächst eines Unterdruckes zur nachträglichen Erzeugung eines den Überzugstoff in das Holz eintreibenden Druckes.Process for the production of a protective coating for wooden propellers according to Patent 552908, characterized by the application of a negative pressure first for the subsequent generation of a pressure that drives the coating material into the wood.
DES88504D 1927-09-21 1927-09-21 Process for the production of a protective cover for wooden propellers Expired DE578525C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES88504D DE578525C (en) 1927-09-21 1927-09-21 Process for the production of a protective cover for wooden propellers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES88504D DE578525C (en) 1927-09-21 1927-09-21 Process for the production of a protective cover for wooden propellers

Publications (1)

Publication Number Publication Date
DE578525C true DE578525C (en) 1933-06-15

Family

ID=7514491

Family Applications (1)

Application Number Title Priority Date Filing Date
DES88504D Expired DE578525C (en) 1927-09-21 1927-09-21 Process for the production of a protective cover for wooden propellers

Country Status (1)

Country Link
DE (1) DE578525C (en)

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