CH185982A - Device on cinema machines to prevent the film from igniting when it is torn. - Google Patents

Device on cinema machines to prevent the film from igniting when it is torn.

Info

Publication number
CH185982A
CH185982A CH185982DA CH185982A CH 185982 A CH185982 A CH 185982A CH 185982D A CH185982D A CH 185982DA CH 185982 A CH185982 A CH 185982A
Authority
CH
Switzerland
Prior art keywords
glasses
film
torn
igniting
cinema
Prior art date
Application number
Other languages
German (de)
Inventor
Stadler Oskar
Original Assignee
Stadler Oskar
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stadler Oskar filed Critical Stadler Oskar
Publication of CH185982A publication Critical patent/CH185982A/en

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
    • G03B21/18—Fire preventing or extinguishing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

  

  Vorrichtung an Kinoapparaten zur Verhinderung der Entzündung des Filmes beim  Zerreissen desselben.    Vorliegende Erfindung     betrifft    eine Vor  richtung an Kinoapparaten zur Verhinderung  einer     Entzündung,des        Filmes    beim     Zerreissen          desselben.    Diese     Vorrichtung    zeichnet sich  dadurch aus, dass eine Anzahl gewölbter Glä  ser hintereinander in einem Rohr angeordnet       sind,    wobei die     !Gläser        mit    ihren konvexen       Seiten    der Lichtquelle zugekehrt     ,sind.     



       Der    Schutz     des    Filmbandes kann noch       vergrössert    werden dadurch,     dass,    wenn die  Gläser     verschiedenen        Durchmesser        aufweisen,     namentlich die kleineren     Durchmesser    auf  weisenden, gewölbten Gläser aus die infra  rotes Strahlen     besonders    gut     absorbierendem          Material,        zum        Beispiel        Eisenoxydulglas,        be-          stehen.     



  Beiliegende Zeichnung     zeigt    ein     Ausfüh-          rungsbeispiel        des        Erfiudungsgegenstandes    in  einem     Agialschnitt    und in einem     Querschnitt.     In einem Rohr A aus     Metall    mit Ansätzen  <I>111,</I>     Il'    zum     Befestigen    von     Anschlussstücken     sind zehn     gewölbte        Gläser        in    Abständen         hintereinander    angeordnet.

   Das Rohr A     weist     einen     Handgriff        K    auf. Die     Gläser   <I>B wei-</I>  sen ungefähr doppelt so grossen     Durchmesser     auf wie die     Gläser    C. Mit<I>D, E, F</I> und G  sind die     Stützen    der Gläser bezeichnet. Die  Gläser .sind mit     ihren        gewölbten        ,Seiten    der  Lichtquelle     zugekehrt.  



  Device on cinema machines to prevent the film from igniting when it is torn. The present invention relates to a device on cinema apparatuses for preventing inflammation of the film when it is torn. This device is characterized in that a number of curved glasses are arranged one behind the other in a tube, with the convex sides of the glasses facing the light source.



       The protection of the film tape can be increased by the fact that, if the glasses have different diameters, namely the smaller diameter-pointing, curved glasses are made of a material that absorbs infrared rays particularly well, for example iron oxide glass.



  The accompanying drawing shows an exemplary embodiment of the subject matter of the invention in an axial section and in a cross section. In a tube A made of metal with lugs <I> 111, </I> II 'for attaching connecting pieces, ten curved glasses are arranged one behind the other at intervals.

   The tube A has a handle K. The <I> B glasses </I> have about twice as large a diameter as the C glasses. <I> D, E, F </I> and G denote the supports of the glasses. The curved sides of the glasses face the light source.

Claims (1)

PATENTANSPRUCH: Vorrichtung an Kinoapparaten zur Ver hinderung einer Entzündung des Filmes beim Zerreissen desselben, dadurch. gekennzeichnet, dass eine Anzahl ,gewölbter Gläser in Abstän den hintereinander in einem Rohr angeordnet sind, wobei die Gläser mit ihren konvexen Seiten der Lichtquelle zugekehrt sind. PATENT CLAIM: Device on cinema equipment to prevent the film from igniting when it is torn, thereby. characterized in that a number of curved glasses are arranged one behind the other in a tube in Abstän, the glasses facing the light source with their convex sides. UNTERANSPRüCHE 1. Vorrichtung nach Patentanspruch, da durch gekennzeichnet, dass der eine Teil ,der Gläser einen ungefähr doppelt so grossen Durchmesser aufweist als der an dere Teil. SUBClaims 1. Device according to claim, characterized in that the one part, the glasses has a diameter approximately twice as large as the other part. 2. Vorrichtung nach Patentanspruch und Unteranspruch 1, dadurch gekennzeichnet, dass mindestens die kleineren Durchmesser aufweisenden Gläe:er aus einem Material bestehen, welches die infraroten Strahlen der Lichtquelle absorbiert.- 2. Device according to claim and dependent claim 1, characterized in that at least the smaller diameter glass: it consists of a material which absorbs the infrared rays of the light source.-
CH185982D 1935-03-21 1935-03-21 Device on cinema machines to prevent the film from igniting when it is torn. CH185982A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH185982T 1935-03-21

Publications (1)

Publication Number Publication Date
CH185982A true CH185982A (en) 1936-08-31

Family

ID=4434062

Family Applications (1)

Application Number Title Priority Date Filing Date
CH185982D CH185982A (en) 1935-03-21 1935-03-21 Device on cinema machines to prevent the film from igniting when it is torn.

Country Status (1)

Country Link
CH (1) CH185982A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1240737B (en) * 1962-06-05 1967-05-18 Moviecol Sales Ltd Projector for displaying moving or still images

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1240737B (en) * 1962-06-05 1967-05-18 Moviecol Sales Ltd Projector for displaying moving or still images

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