DE114927C - - Google Patents
Info
- Publication number
- DE114927C DE114927C DENDAT114927D DE114927DA DE114927C DE 114927 C DE114927 C DE 114927C DE NDAT114927 D DENDAT114927 D DE NDAT114927D DE 114927D A DE114927D A DE 114927DA DE 114927 C DE114927 C DE 114927C
- Authority
- DE
- Germany
- Prior art keywords
- frame
- blueprint
- tensioning screws
- pneumatic
- present
- 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
- 239000011521 glass Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000001427 coherent Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/02—Exposure apparatus for contact printing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Securing Of Glass Panes Or The Like (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Gegenstand vorliegender Erfindung ist ein pneumatischer Lichtpausapparat für Pausen gröfseren Formates, bei welchem der luftdichte Abschlufs durch einen besonderen, mit Spannschrauben a.ngeprefsten Rahmen bewirkt wird.The present invention is a pneumatic blueprint for breaks Larger formats, in which the airtight closure by a special, with tensioning screws a.approved frame is effected.
Der im Uebrigen nach den bekannten Grundzügen pneumatischer Lichtpausapparate (vergl. die Patentschrift 83219) hergestellte Apparat vorliegender Erfindung ist auf beiliegender Zeichnung veranschaulicht, und zwar zeigtIncidentally, according to the well-known basic features of pneumatic blueprint machines (See Patent 83219) manufactured apparatus of the present invention is based on the enclosed Drawing illustrates, namely shows
Fig. ι eine Draufsicht,Fig. Ι a plan view,
Fig. 2 einen Schnitt nach Linie A-B derFig. 2 is a section along line AB of
Fig. i,Fig. I,
Fig. 3 einen Schnitt nach Linie C-D der Fig. i, und3 shows a section along line CD of FIGS
Fig. 4 ein Detail.4 shows a detail.
Die Seiten des Rahmens sind aus Winkeleisen α hergestellt, die mittelst der Blechstücke b mit einander verbunden oder nach Ausstanzen von Dreiecken aus einem Stück warm gebogen sein können. In diesem eisernen Rahmen liegen zunächst abrichtbare Leisten c aus Holz, oder es werden sogen. Zugdichter eingeklebt, auf welche die Glasplatte d zu liegen kommt. Gewöhnlich ist die Platte d bezw. die zu copirende Zeichnung mit einer Decke e aus Gummi oder dergl. überdeckt. Die abrichtbaren Leisten c bilden das Widerlager für den den Gegenstand der vorliegenden Erfindung bildenden zusammenhängenden Druckrahmen f, der mittelst an dem Copirrahmen angeordneter Spannschrauben h gegen Gummidecke, Pauspapier, Pause und Glasplatte so geprefst wird, dafs ein luftdichter Abschlufs für das unter der Gummidecke e zu bildende Vacuum entsteht. Die Spannschrauben h sind an dem eisernen Rahmen mittelst Laschen i befestigt und dienen gleichzeitig zur "Versteifung der Construction. Die Winkelstücke k verhindern ein Herausfallen der Glasplatte d aus dem Rahmen.The sides of the frame are made of angle iron α , which can be connected to one another by means of the sheet metal pieces b or can be hot-bent after punching out triangles from one piece. In this iron frame are dressable strips c made of wood, or there are so-called. Draft seal glued in place on which the glass plate d comes to rest. Usually the plate d respectively. the drawing to be copied is covered with a blanket made of rubber or the like. The dressable strips c form the abutment for the coherent pressure frame f, which is the subject of the present invention and which is pressed against the rubber cover, tracing paper, break and glass plate by means of tensioning screws h arranged on the copier frame so that an airtight seal for that under the rubber cover e forming vacuum arises. The tensioning screws h are attached to the iron frame by means of straps i and at the same time serve to stiffen the construction. The angle pieces k prevent the glass plate d from falling out of the frame.
Die Arbeitsweise mit dem Apparat vorliegender Erfindung ist folgende:The operation of the apparatus of the present invention is as follows:
In den geöffneten Apparat wird in bekannter Weise Zeichnung und lichtempfindliches Pauspapier eingelegt, die Gummidecke darüber gedeckt, hierauf der Druckrahmen f eingesetzt und mittelst der Spannschrauben angezogen. Mit einer geeigneten Pumpe wird dann in bekannter Weise die Luft zwischen Glasscheibe und Gummidecke entfernt, und der Apparat bezw. die Zeichnung dem Lichte ausgesetzt.In the opened apparatus, a drawing and light-sensitive tracing paper are inserted in a known manner, the rubber blanket is covered over it, the printing frame f is then inserted and tightened by means of the tensioning screws. With a suitable pump, the air between the glass and rubber cover is then removed in a known manner, and the apparatus BEZW. the drawing exposed to the light.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE114927C true DE114927C (en) |
Family
ID=384384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT114927D Active DE114927C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE114927C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5525278A (en) * | 1992-03-30 | 1996-06-11 | Hecker Und Krosch Gmbh & Co. Kg | Recycling process and apparatus for rigid polyurethane foam |
-
0
- DE DENDAT114927D patent/DE114927C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5525278A (en) * | 1992-03-30 | 1996-06-11 | Hecker Und Krosch Gmbh & Co. Kg | Recycling process and apparatus for rigid polyurethane foam |
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