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
Links
- 238000004519 manufacturing process Methods 0.000 title description 3
- 239000002023 wood Substances 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 2
- 230000035515 penetration Effects 0.000 claims 1
- 239000011148 porous material Substances 0.000 claims 1
- 239000001993 wax Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Landscapes
- 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
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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)
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) |
-
1908
- 1908-11-19 AT AT40772D patent/AT40772B/en active
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