AT40772B - Method of making pencils. - Google Patents

Method of making pencils.

Info

Publication number
AT40772B
AT40772B AT40772DA AT40772B AT 40772 B AT40772 B AT 40772B AT 40772D A AT40772D A AT 40772DA AT 40772 B AT40772 B AT 40772B
Authority
AT
Austria
Prior art keywords
wax
wood
bars
pencils
temperature
Prior art date
Application number
Other languages
German (de)
Inventor
Samuel Henry Crocker
Original Assignee
Samuel Henry Crocker
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 Samuel Henry Crocker filed Critical Samuel Henry Crocker
Application granted granted Critical
Publication of AT40772B publication Critical patent/AT40772B/en

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  • Chemical And Physical Treatments For Wood And The Like (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von   Bleistiften.   



   Die vorliegende Erfindung besteht in einem Verfahren zur Herstellung von Bleistiften, und zwar insbesondere auf eine chemische Vorbereitung des dazu zu verwendenden Holzes, um dieses zwecks Spitzens der Bleistifte besser schneiden zu können. Dies wird durch eine chemische Behandlung des Holzes erzielt, durch welche die   Holzsubstanz   gefärbt, bezw. derart verändert und mit Wachs oder dgl. imprägniert wird, wodurch eben 
 EMI1.1 
 oder anderes geeignetes Holz in Bleistiftriegel der   uneben   Grösse geschnitten,   Diese   Riegel werden in ein mit Blei ausgefüttertes Gefäss gebracht, welches mit einem Standanzeiger versehen ist. In   dieses Gefäss wird   etwa 1 Prozent   Schwefelsäure enthaltendes   Wasser eingefüllt, welches die Riegel   überdeckt.

   Hierauf   wird das   Gefäss   erhitzt und die 
 EMI1.2 
 Flüssigkeit abgelassen, ohne die Riegel zu   entfernen und das Gefäss   wird nun mit geschmolzenem Paraffin, Wachs oder dgl. angefüllt. Nunmehr wird nochmals Hitz angewendet, um die Temperatur des Wachses oder dgl. auf ungefahr 100  C zu bringen. auf welcher Temperatur es erhalten wird bis den Riegeln genügend wasser durch Verdampfung ent-   zogen   ist um zu erzielen, dass die Riegel die   erforderliche Me@ge   von Wachs al) sorbieren. 



  Das Sinken der Wasoberfläche in dem Standglas zeigt die Menge des in Holz eingodrungonen Wachses an und ermöglicht eine Beurteilung, ob die Sättigung des Holzes eine hinreichende ist, da bei   übermässiger Sättigung   ein Leimen des Holzes   undurchführbar   wäre. Sobald die genügende Mengp von Wachs von den Riegeln absorbiert wurde, wird der Rest des Wachses aus dem Gefässe abgelassen und die Riegel herausgehoben. Hierauf werden die Riegel an der   Luft bei einer Temperatur getrocknet, die hoher ist. ais   der   Schmelzpunkt   des Wachses, um zu ermöglichen, dass dasselbe sogar durch das Holz hindurchdringt.

   Hierauf werden die Riegel mit den erforderlichen Rillen, dann mit Graphiteintagen versehen und   schliesslich   in bekannter Weise geleimt. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Method of making pencils.



   The present invention consists in a method for the production of pencils, and in particular a chemical preparation of the wood to be used for this purpose in order to be able to better cut it for the purpose of sharpening the pencils. This is achieved through a chemical treatment of the wood, through which the wood substance is colored, respectively. so changed and with wax or the like. Impregnated, whereby just
 EMI1.1
 or other suitable wood cut into pencil bars of the uneven size. These bars are placed in a container lined with lead, which is provided with a level indicator. Water containing about 1 percent sulfuric acid is poured into this vessel and covers the bars.

   The vessel is then heated and the
 EMI1.2
 Drain the liquid without removing the latch and the vessel is now filled with molten paraffin, wax or the like. Now heat is applied again to bring the temperature of the wax or the like to about 100 ° C. At what temperature it is obtained until sufficient water has been removed from the bars by evaporation to ensure that the bars sorb the required amount of wax al).



  The sinking of the surface of the water in the stand glass shows the amount of wax that has penetrated the wood and enables an assessment to be made as to whether the saturation of the wood is sufficient, since gluing the wood would be impracticable in the event of excessive saturation. Once the sufficient amount of wax has been absorbed by the bars, the remainder of the wax is drained from the jar and the bars lifted out. The bars are then air-dried at a temperature that is higher. as the melting point of the wax to allow it to penetrate even through the wood.

   The bars are then provided with the necessary grooves, then with graphite inserts and finally glued in the known manner.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : EMI1.3 worauf noch die Holzriegel an der Luft bei einer Temperatur getrocknet werden, die höher ist, als der Schmelzpunkt des Wachses bezw. des verwendeten Materials, zu dem Zwecke, ein vollständiges Durchdringen des Holzes mit dem Porenfüllmaterial zu bewirken. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: EMI1.3 whereupon the wooden bars are dried in the air at a temperature that is higher than the melting point of the wax BEZW. of the material used, for the purpose of bringing about complete penetration of the wood with the pore filling material. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT40772D 1908-11-19 1908-11-19 Method of making pencils. AT40772B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT40772T 1908-11-19

Publications (1)

Publication Number Publication Date
AT40772B true AT40772B (en) 1910-02-10

Family

ID=3559333

Family Applications (1)

Application Number Title Priority Date Filing Date
AT40772D AT40772B (en) 1908-11-19 1908-11-19 Method of making pencils.

Country Status (1)

Country Link
AT (1) AT40772B (en)

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