DE9468C - Innovations on wipeable writing boards for pencil snippets - Google Patents
Innovations on wipeable writing boards for pencil snippetsInfo
- Publication number
- DE9468C DE9468C DENDAT9468D DE9468DA DE9468C DE 9468 C DE9468 C DE 9468C DE NDAT9468 D DENDAT9468 D DE NDAT9468D DE 9468D A DE9468D A DE 9468DA DE 9468 C DE9468 C DE 9468C
- Authority
- DE
- Germany
- Prior art keywords
- pencil
- innovations
- snippets
- writing boards
- wipeable
- 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.)
- Active
Links
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N Sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 235000019353 potassium silicate Nutrition 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- 239000000123 paper Substances 0.000 claims description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N Silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 235000014692 zinc oxide Nutrition 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 231100001004 fissure Toxicity 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/002—Repeatedly-usable boards or tablets for writing or drawing chemical details
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Description
1879.1879.
..:- JV° 9468 — Klasse 70...: - JV ° 9468 - class 70.
HENRY WELLS HOLL^II-BRdOKLYN (Staat New-York, V. S. A.). Neuerungen an abwischbaren Schreibtafeln für Bleistiftschrift.HENRY WELLS HOLL ^ II-BRdOKLYN (New York State, V.S.A.). Innovations in erasable writing boards for pencil writing.
Patentirt im Deutschen Reiche vom 14. October 1879 ab.Patented in the German Empire on October 14, 1879.
Weifse oder weifsliche Schreibtafeln, welche als abwischbare Tafeln bekannt und zu Aufzeichnungen mittelst eines Bleistiftes ^ bestimmt sind, werden gewöhnlich mit einem weifsen ■-Ueberzug versehen, der aus einem Gemisch von Wasserglas und einem Metalloxyd besteht. Der Ueberzug mufs hinlänglich rauh sein, um das Anhaften des Bleistiftes auf der Tafel zu ermöglichen. Eine solche Zusammensetzung des Ueberzuges ist jedoch vollkommen unelastisch und man hat gefunden, dafs er nach dem Trockenwerden. der Tafeloberfläche unzählbare feine Risse zeigt, in welche sich der Graphit der Bleifeder einreibt und dadurch die Schreibtafel in kurzer Zeit unbrauchbar gemacht wird.White or white writing boards, known as erasable boards, used to keep records are determined by means of a pencil, are usually made with a white pencil ■ -Ueberzug provided, which consists of a mixture of water glass and a metal oxide. The coating must be sufficiently rough to prevent the pencil from sticking to the board enable. However, such a composition of the coating is completely inelastic and it has been found that after drying up. the surface of the board are innumerable shows fine cracks into which the graphite of the lead pen rubs and thereby the writing board is rendered unusable in a short time.
Vorliegende Erfindung bezweckt diesem Uebelstande abzuhelfen und Tafeln von erforderlichem Elasticitätsgrad herzustellen, welche eine glatte obere Schreibfläche von grofser Dauerhaftigkeit besitzen.The present invention aims to remedy this inconvenience and provide information on what is necessary To establish a degree of elasticity which provides a smooth upper writing surface of great durability own.
Die Erfindung besteht erstens in der Darstellung einer Ueberzugverbindung aus Wasserglaslösung, Zinkoxyd und kieselsaurer Magnesia und zweitens in der Herstellung der Tafel aus Papier, Pappdeckel, Pappe oder ähnlichem Material, welche mit obiger Verbindung überzogen wird.The invention consists firstly in the representation of a coating compound made of water glass solution, Zinc oxide and silicic acid magnesia and secondly in the manufacture of the table from paper, cardboard cover, cardboard or the like Material which is coated with the above compound.
Einem Liter Wasserglas von etwa 39 ° Beaume setzt der Erfinder noch einen Liter Wasser zu. Die Lösung mischt er mit ungefähr 450 g reinem gepulvertem Zinkoxyd und mit etwa 450 g gepulverter kieselsaurer Magnesia.The inventor adds one liter of water to a liter of water glass of around 39 ° Beaume. He mixes the solution with about 450 g of pure powdered zinc oxide and with about 450 g of powdered zinc oxide silica magnesia.
Nach gründlichem Mischen erhält man eine Masse im Zustand einer Anstrichfarbe, welche unmittelbar auf ein Blatt steifes Papier, Pappe oder anderes geeignetes Material mittelst einer Bürste oder in anderer Weise aufgetragen werden kann.After thorough mixing, a mass in the state of a paint is obtained, which directly onto a sheet of stiff paper, cardboard or other suitable material by means of one Brush or otherwise applied.
Nach dem Trocknen bildet der Anstrich oder Ueberzug eine glatte ebene Fläche, auf welcher aufgebrachte Bleistiftstriche leicht ausgelöscht werden können. Die Oberfläche zeigt weder Spalten noch Risse, in welche das Material der Bleifeder eingerieben werden kann.After drying, the paint or coating forms a smooth flat surface on which applied pencil lines can be easily erased. The surface shows neither Fissures or cracks into which the lead pen material can be rubbed.
Das hier genau angegebene Mischungsverhältnifs der Bestandtheile, aus welchen der Ueberzug der Schreibtafel hergestellt wird, läfst auch bis zu einem gewissen Grad eine Abweichung desselben zu, ohne dadurch die Eigenschaften der Verbindung zu beeinträchtigen.The exact mixing ratio of the constituents from which the Covering the writing board is produced, also allows a deviation to a certain extent the same without affecting the properties of the connection.
Claims (2)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE9468C true DE9468C (en) |
Family
ID=286830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT9468D Active DE9468C (en) | Innovations on wipeable writing boards for pencil snippets |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE9468C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1068499B (en) * | 1959-11-05 | |||
| WO2006119592A3 (en) * | 2005-05-13 | 2007-03-08 | Polyvision Nv | Method for manufacturing a visual communication panel having a ceramic surface layer |
-
0
- DE DENDAT9468D patent/DE9468C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1068499B (en) * | 1959-11-05 | |||
| WO2006119592A3 (en) * | 2005-05-13 | 2007-03-08 | Polyvision Nv | Method for manufacturing a visual communication panel having a ceramic surface layer |
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