DE92910C - - Google Patents
Info
- Publication number
- DE92910C DE92910C DENDAT92910D DE92910DA DE92910C DE 92910 C DE92910 C DE 92910C DE NDAT92910 D DENDAT92910 D DE NDAT92910D DE 92910D A DE92910D A DE 92910DA DE 92910 C DE92910 C DE 92910C
- Authority
- DE
- Germany
- Prior art keywords
- sides
- pressed
- sheet
- wood
- writing surface
- 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
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 241001633942 Dais Species 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000000945 filler Substances 0.000 claims 1
- 238000005755 formation reaction Methods 0.000 claims 1
- 239000000123 paper Substances 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L Calcium hydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
Landscapes
- Drawing Aids And Blackboards (AREA)
- Laminated Bodies (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Die vorliegende Erfindung bezieht sich auf ein neues Verfahren zur Herstellung von Wandtafeln, vorzugsweise Schulwandtafeln, und hat den Zweck, gröfste Stabilität gegen Verziehen zu erzielen.The present invention relates to a new method of manufacturing wall panels, preferably school blackboards, and has the purpose of maximum stability against warping to achieve.
Fig. ι ist eine Vorderansicht der fertigen Tafel,Fig. Ι is a front view of the finished panel,
Fig. 2 ein Querschnitt derselben.Fig. 2 is a cross section of the same.
Fig. 3 zeigt die verschiedenen Stadien der Herstellung der Schreibfläche.Fig. 3 shows the various stages in the manufacture of the writing surface.
Fig. 4 ist ein Längsschnitt zu Fig. 3.FIG. 4 is a longitudinal section of FIG. 3.
Die neue Schulwandfafel besteht aus zwei Metalltafeln a, a1 aus Eisenblech, Weifsblech oder Zinkblech, welche auf die beiden Seiten eines festen Kernes b aus Holz, Pappe u. dgl. mittelst Aufklebens und darauf folgendes Zusammenpressen aufgebracht sind; als Bindemittel kann Käsematte und gelöschter Kalk verwendet werden.The new school blackboard consists of two metal panels a, a 1 made of sheet iron, white sheet or zinc sheet, which are attached to the two sides of a solid core b made of wood, cardboard and the like by means of gluing and then pressing together; Cheese mat and slaked lime can be used as binding agents.
Nach dem Zusammenpressen werden die Metallfiächen (Fig. 3 und 4, I) mit Gazeschicht (II) überzogen. Letztere wird gespachtelt, geglättet, gestrichen und schliefslich satinirt, bis sie die wünschenswerthe feine Glätte der Schreibfläche (III) besitzt.After pressing together, the metal surfaces (Fig. 3 and 4, I) are covered with a gauze layer (II) coated. The latter is filled, smoothed, painted and finally satinized until it has the desirable fine smoothness of the writing surface (III).
Die so hergerichteten fertigen Tafeln werden nun in genuthete Holzrahmen c gebracht, auf welche Leisten c1 aus hartem Holz aufgeschraubt werden. Hierdurch wird die ,Stabilität der Tafel erhöht und gleichzeitig auch die Schrift auf der Rückseite beim Bewegen der Tafel am Gestell vor dem Verwischen geschützt.The finished panels prepared in this way are now placed in grooved wooden frames c , onto which strips c 1 made of hard wood are screwed. This increases the stability of the board and at the same time protects the writing on the back from smudging when the board is moved on the frame.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE92910C true DE92910C (en) |
Family
ID=364383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT92910D Active DE92910C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE92910C (en) |
-
0
- DE DENDAT92910D patent/DE92910C/de active Active
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