AT243616B - Film projectors, in particular cine film projectors - Google Patents

Film projectors, in particular cine film projectors

Info

Publication number
AT243616B
AT243616B AT510664A AT510664A AT243616B AT 243616 B AT243616 B AT 243616B AT 510664 A AT510664 A AT 510664A AT 510664 A AT510664 A AT 510664A AT 243616 B AT243616 B AT 243616B
Authority
AT
Austria
Prior art keywords
film projectors
cine
projectors
film
cam
Prior art date
Application number
AT510664A
Other languages
German (de)
Inventor
Friedrich Dipl Ing Foerch
Original Assignee
Eumig
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 Eumig filed Critical Eumig
Priority to AT510664A priority Critical patent/AT243616B/en
Application granted granted Critical
Publication of AT243616B publication Critical patent/AT243616B/en

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  • Projection Apparatus (AREA)

Description

  

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  Filmprojektor, insbesondere Schmalfilmprojektor 
 EMI1.1 
 

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 Positionen. Gemäss Fig. 4a ist eine Netzfrequenz von 50 Hz und 24 B/sec eingestellt. Der Bildfrequenzeinsteller stützt sich mit einer Fläche 21 an der Nockenfläche 18a ab. Die Stellung der Nocke 18 
 EMI2.1 
 



   Die Fig.   4c - 4d   zeigen Einstellungen entsprechend einer Netzfrequenz von 60 Hz. 



   Fig. 4c entspricht einer Einstellung von 24   B/sec ; die   Nocke 18 gegenüber den Fig. 4a und 4b um 900 verschwenkt, so dass sich der Bildfrequenzeinsteller mit der Fläche 21 an der Nockenfläche 18c abstützt. Die Stellung der Nocke 18 wird auch in dieser Position durch den ortsfesten Anschlag 23 definiert. Die Fig. 18c schliesslich zeigt die Einstellung von 16 B/sec. Die Stellung der Nocke 18 entspricht der in Fig. 4c gezeigten. Der Bildfrequenzeinsteller 14 stützt sich mit der Anschlagfläche 22 an der Nockenfläche 18d ab. 



   Die Erfindung ist nicht   auf das dargestellte Beispiel beschränkt, sondern kann hinsichtlich der Getriebe-   und Motorkonstruktion sowie auch der speziellen Ausführung des   Bildfrequenz-und Netzfrequenzeinstel-   lers abgeändert werden. 



    PATENTANSPRÜCHE :    
1. Filmprojektor insbesondere Schmalfilmprojektor mit einem Asynchron-bzw. Synchronantriebsmotor und einem zur Netzfrequenz und Bildfrequenzverstellung in seiner Übersetzung umschaltbaren Reibradgetriebe, dadurch gekennzeichnet, dass das vorzugsweise auf der Motorwelle angeordnete Reibrad durch eine zwischen zwei Anschlägen verschiebbare Einstellvorrichtung verstellbar ist, wobei ein Anschlag die maximale, der andere Anschlag die minimale Bildfrequenz bestimmt und diese Anschläge zur Netzfrequenzumschaltung verstellbar sind. 
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  Film projectors, in particular cine film projectors
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 Positions. According to FIG. 4a, a line frequency of 50 Hz and 24 B / sec is set. The frame rate adjuster is supported with a surface 21 on the cam surface 18a. The position of the cam 18
 EMI2.1
 



   FIGS. 4c-4d show settings corresponding to a mains frequency of 60 Hz.



   4c corresponds to a setting of 24 B / sec; the cam 18 is pivoted by 900 relative to FIGS. 4a and 4b, so that the image frequency adjuster is supported with the surface 21 on the cam surface 18c. The position of the cam 18 is also defined in this position by the stationary stop 23. Finally, FIG. 18c shows the setting of 16 fps. The position of the cam 18 corresponds to that shown in FIG. 4c. The frame rate adjuster 14 is supported with the stop surface 22 on the cam surface 18d.



   The invention is not limited to the example shown, but can be modified with regard to the gear and motor construction as well as the special design of the image frequency and line frequency adjuster.



    PATENT CLAIMS:
1. Film projector in particular cine projector with an asynchronous or. Synchronous drive motor and a friction gear which can be switched in its translation for the mains frequency and image frequency adjustment, characterized in that the friction wheel, which is preferably arranged on the motor shaft, is adjustable by an adjusting device which can be displaced between two stops, one stop determining the maximum, the other stop determining the minimum image frequency and these stops are adjustable for switching the mains frequency.
 EMI2.2


 

Claims (1)

net, dass die Einstellvorrichtung für das Reibrad zwei Anschlagflächen aufweist, welche entsprechend der Netzfrequenz in mindestens zwei verschiedenen Einstellungen verstellbar ist, wobei diametral gegen- überliegende Nockenflächen als Anschläge für die genannte Einstellvorrichtung dienen. net that the adjustment device for the friction wheel has two stop surfaces, which can be adjusted in at least two different settings according to the mains frequency, with diametrically opposite cam surfaces serving as stops for said adjustment device.
AT510664A 1964-06-15 1964-06-15 Film projectors, in particular cine film projectors AT243616B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT510664A AT243616B (en) 1964-06-15 1964-06-15 Film projectors, in particular cine film projectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT510664A AT243616B (en) 1964-06-15 1964-06-15 Film projectors, in particular cine film projectors

Publications (1)

Publication Number Publication Date
AT243616B true AT243616B (en) 1965-11-25

Family

ID=3571981

Family Applications (1)

Application Number Title Priority Date Filing Date
AT510664A AT243616B (en) 1964-06-15 1964-06-15 Film projectors, in particular cine film projectors

Country Status (1)

Country Link
AT (1) AT243616B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047442A (en) * 1975-06-26 1977-09-13 Karl Vockenhuber Apparatus for adjusting the rotational speed of a drive mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047442A (en) * 1975-06-26 1977-09-13 Karl Vockenhuber Apparatus for adjusting the rotational speed of a drive mechanism

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