AT75767B - Plate for the projection of lettering. - Google Patents
Plate for the projection of lettering.Info
- Publication number
- AT75767B AT75767B AT75767DA AT75767B AT 75767 B AT75767 B AT 75767B AT 75767D A AT75767D A AT 75767DA AT 75767 B AT75767 B AT 75767B
- Authority
- AT
- Austria
- Prior art keywords
- plate
- projection
- lettering
- desc
- beeswax
- Prior art date
Links
- 239000010426 asphalt Substances 0.000 claims description 2
- 235000013871 bee wax Nutrition 0.000 claims description 2
- 239000012166 beeswax Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000004071 soot Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 2
- 238000000576 coating method Methods 0.000 claims 2
- 239000011521 glass Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Drawing Aids And Blackboards (AREA)
- Surface Treatment Of Glass (AREA)
Description
<Desc/Clms Page number 1>
Platte zur Projektion von Schriftzügen.
Die vorliegende Erfindung dient dazu, Schriften, Zeichnungen usw. in der Phase ihrer Entstehung zu projizieren, wodurch die Aufmerksamkeit des Zuschauera in höherem urate geweckt wird.
EMI1.1
welche die Schrift aufgetragen wurde, was den Nachteil zur Folge hat, dass die betreffende Platte durch das Abreiben leicht beschädigt worden kann.
Dieser Umstand erschwert nicht nur die erste sondern macht auch eine wiederholte Benutzung der Platte unmöglich. Um diesem Übelstande abzuhelfen, die Platten im voraus vorbereiten und dieselben unter allen Umständen benutzen zu können, wird nach der Kr- findung die Glasplatte mit einer Mischung von Asphalt, Bienenwachs und Russ-am besten zu gleichen Teilen - Überzogen, wodurch die Projektioneptatte einerseits dauerhaft wird, andererseits aber dem Eindringen des schreibenden Stiftes keinen Widerstand entgegensetzt. Die benutzten Platten können auch zur weiteren Verwendung aufbewahrt werden.
Die Projektion geschieht auf folgende Weise :
Aus der starken Lichtqnelle B werden die Strahlen mittels eines Hohlspiegels A und der Linse auf die dunkle Projektionsplatte P in paralleler Richtung geworfen.
Mit Hilfe eines scharfen Stiftes wird die für das Licht undurchdringliche Schichte ab- geschabt und so die Schrift, Zeichnungen und dgl. nach und nach hergestellt. Durci dit auf solche Weise durchsichtig gewordenen SteHen dringt das Licht auf den Spiegel N' und seine Strahlen werden wieder in paralleler Richtung durch die biconvexe Linse . j auf die weisse vertikale Wand D geworfen und so den Zuschauern sichtbar gemacht. Wenn man unter die dunkle Platte eine farbige Glasplatte einschaltet, erscheint auch die Zeichnung farbig. Wenn man in F, eine undurchsichtige Platte (z.
B. aus Holz) einschiebt. kann man die auf der Platte l'schon früher gemachte Zeichnung nach und nach erscheinen lassen.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Plate for the projection of lettering.
The present invention is used to project writings, drawings, etc. at the stage of their creation, thereby attracting the attention of the viewer at a higher rate.
EMI1.1
which the writing was applied, which has the disadvantage that the plate in question can easily be damaged by rubbing.
This circumstance not only complicates the first but also makes repeated use of the plate impossible. In order to remedy this inconvenience, to prepare the plates in advance and to be able to use them under all circumstances, the glass plate is coated with a mixture of asphalt, beeswax and soot - ideally in equal parts - after the invention, making the projection plate permanent is, on the other hand, offers no resistance to the penetration of the writing pen. The used plates can also be stored for further use.
The projection is done in the following way:
From the strong light source B, the rays are thrown onto the dark projection plate P in a parallel direction by means of a concave mirror A and the lens.
With the help of a sharp pen, the layer that is impermeable to light is scraped off and the writing, drawings and the like are gradually produced. Through the stand which has become transparent in this way, the light penetrates the mirror N 'and its rays are again in a parallel direction through the biconvex lens. j thrown onto the white vertical wall D and thus made visible to the audience. If you insert a colored glass plate under the dark plate, the drawing also appears in color. If in F, an opaque plate (e.g.
B. made of wood). the drawing made earlier on the plate can gradually appear.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT75767T | 1914-06-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT75767B true AT75767B (en) | 1919-03-10 |
Family
ID=3597449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT75767D AT75767B (en) | 1914-06-15 | 1914-06-15 | Plate for the projection of lettering. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT75767B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1095003B (en) * | 1955-09-12 | 1960-12-15 | Fenske Fedrick & Miller Inc | Recording and display device |
| US4735499A (en) * | 1983-11-28 | 1988-04-05 | Fuji Photo Film Co., Ltd. | Film carrier support mechanism for film projector |
-
1914
- 1914-06-15 AT AT75767D patent/AT75767B/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1095003B (en) * | 1955-09-12 | 1960-12-15 | Fenske Fedrick & Miller Inc | Recording and display device |
| US4735499A (en) * | 1983-11-28 | 1988-04-05 | Fuji Photo Film Co., Ltd. | Film carrier support mechanism for film projector |
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