DE375364C - Standstill cinema - Google Patents

Standstill cinema

Info

Publication number
DE375364C
DE375364C DEA34742D DEA0034742D DE375364C DE 375364 C DE375364 C DE 375364C DE A34742 D DEA34742 D DE A34742D DE A0034742 D DEA0034742 D DE A0034742D DE 375364 C DE375364 C DE 375364C
Authority
DE
Germany
Prior art keywords
fan
picture
cinema
demonstration
standstill
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.)
Expired
Application number
DEA34742D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AEG AG
Original Assignee
AEG AG
Publication date
Priority to DEA34742D priority Critical patent/DE375364C/en
Application granted granted Critical
Publication of DE375364C publication Critical patent/DE375364C/en
Expired legal-status Critical Current

Links

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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)

Description

Es ist bekannt, bei Kinovorführungsapparaten mit Stillstandseinrichtung zwischen Lichtquelle und Bildfenster eine mit einer geeigneten Flüssigkeit gefüllte Küvette bzw. ein Drahtnetz einzuschalten, um dadurch einen Teil der Wärmestrahlen zu absorbieren bzw. abzulenken. Bei hohen Licht- bzw. Stromstärken genügt jedoch diese Einrichtung allein nicht, um den Film vor Entzündung zuIt is known in cinema projection apparatus with a standstill device between Light source and picture window a cuvette or a filled with a suitable liquid Switch on the wire mesh in order to absorb or absorb some of the heat rays. distract. In the case of high light or current intensities, however, this device alone is sufficient not to keep the film from inflammation too

ίο schützen. Erfindungsgemäß wird außer den erwähnten Einrichtungen eine ständig laufende, als Ventilator ausgebildete Verschlußscheibe zwischen Lichtquelle und Bildband angeordnet. Hierdurch wird erreicht, daß das Bildband während der Dunkelpausen stets abgedeckt ist und nicht, wie bisher üblich, dauernd beleuchtet und erwärmt wird. Außerdem wird das Bildband und das Bildfenster durch den erzeugten Luftstrom gekühlt. Richtet man den Ventilator so ein, daß er die' Luft vom Bildfenster wegsaugt, so werden, falls der Film im Fenster trotzdem Feuer fangen sollte, die Flamme und absprühende Filmteilchen vom noch nicht brennenden Film weggerissen.ίο protect. According to the invention is also the mentioned devices a continuously running, designed as a fan closure disc arranged between the light source and the illustrated book. This ensures that the picture book is always covered during the dark breaks and not, as has been the case up to now, continuously illuminated and is heated. In addition, the image tape and the image window are cooled by the air flow generated. One judges turn the fan on so that it sucks the air away from the picture window, so if the film should catch fire in the window anyway, remove the flame and spray particles from the Torn away not yet burning film.

Außerdem wirkt der Luftstrom auch reinigend auf das Bildfenster.In addition, the air flow also has a cleaning effect on the picture window.

In der Zeichnung ist der Gegenstand der Erfindung an einem Ausführungsbeispiel schematisch dargestellt, und zwar bedeutet a die Lichtquelle, O1, O2, bä den Kondensor, c die Kühlküvette, d die als Ventilator ausgebildete Verschlußscheibe, e das Bildfenster, f das Bildband, g das Objektiv und h eine etwa noch außerdem anzubringende Verschlußscheibe zwischen Bildfenster und Objektiv.In the drawing, the object of the invention is shown schematically in an exemplary embodiment, namely a light source means O 1, O 2, b like the condenser, c is the Kühlküvette, which is designed as fan closure disc, e d, the image window, f the image band , g the lens and h a sealing disk that is also to be attached between the image window and the lens.

Claims (2)

Patent-Ansprüche:Patent Claims: 1. Vorführungskinematograph mit Einrichtung zum Stillsetzen des Bildbandes, dadurch gekennzeichnet, daß zwischen Lichtquelle und Bildband eine aus einem wärmeabsorbierenden und lichtdurchlässi-'gen Mittel (z. B. Flüssigkeitsküvette oder Drahtnetz) und einer ständig laufenden als Ventilator ausgebildeten Verschlußscheibe bestehende Vorrichtung angeordnet ist.1. Demonstration cinematograph with device for stopping the photo book, characterized in that between the light source and the picture tape one of a heat-absorbing and translucent Medium (e.g. liquid cuvette or wire mesh) and a continuously running as Fan-shaped closure disk existing device is arranged. 2. Vorführungskino nach Anspruch i, dadurch gekennzeichnet, daß die als Ventilator ausgebildete Verschlußscheibe die Luft vom Bildband wegsaugt.2. Demonstration cinema according to claim i, characterized in that as a fan trained closure disc sucks the air away from the picture book. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DEA34742D Standstill cinema Expired DE375364C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA34742D DE375364C (en) Standstill cinema

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA34742D DE375364C (en) Standstill cinema

Publications (1)

Publication Number Publication Date
DE375364C true DE375364C (en) 1923-05-12

Family

ID=6928684

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA34742D Expired DE375364C (en) Standstill cinema

Country Status (1)

Country Link
DE (1) DE375364C (en)

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