AT243616B - Film projectors, in particular cine film projectors - Google Patents
Film projectors, in particular cine film projectorsInfo
- 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
Links
- 238000010276 construction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Projection Apparatus (AREA)
Description
<Desc/Clms Page number 1>
Filmprojektor, insbesondere Schmalfilmprojektor
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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
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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)
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)
| 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 |
-
1964
- 1964-06-15 AT AT510664A patent/AT243616B/en active
Cited By (1)
| 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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