AT222502B - Film projector with a jerk driven drive roller for the film and a continuously driven shutter - Google Patents

Film projector with a jerk driven drive roller for the film and a continuously driven shutter

Info

Publication number
AT222502B
AT222502B AT687459A AT687459A AT222502B AT 222502 B AT222502 B AT 222502B AT 687459 A AT687459 A AT 687459A AT 687459 A AT687459 A AT 687459A AT 222502 B AT222502 B AT 222502B
Authority
AT
Austria
Prior art keywords
film
jerk
drive roller
driven
shutter
Prior art date
Application number
AT687459A
Other languages
German (de)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Application granted granted Critical
Publication of AT222502B publication Critical patent/AT222502B/en

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  • Projection Apparatus (AREA)

Description

  

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  Filmbildwerfer mit einer ruckweise anzutreibenden Antriebsrolle für den Film und einer kontinuierlich anzutreibenden Blende 
 EMI1.1 
 

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 fest auf der Welle 16 sitzenden Nabe 15 befindet sich der nachgiebige Teil 17. Bei Stossbelastung oder plötzlicher Zunahme der zu übertragenden Kräfte kann der Zahnkranz 14 in axialer Richtung ausweichen, wie dies gestrichelt in der Figur dargestellt ist. 



    PATENTANSPRÜCHE :    
1. Filmbildwerfer mit einer ruckweise anzutreibenden Antriebsrolle für den Film und einer kontinuierlich anzutreibenden Blende zur periodischen. Abblendung des zum Durchleuchten eines Filmbildes dienenden Lichtbündels, bei dem im Antrieb zwischen der Antriebsrolle und der Blende ein Zahnrad als Kupplungsglied vorhanden ist, das am Umfang mit derart schräg verlaufenden Zähnen versehen ist, dass im Betrieb in axialer Richtung eine Kraft auf das Zahnrad ausgeübt wird, die nachgiebig von einem mechanischen Filter aufgenommen wird, dadurch gekennzeichnet, dass. das Zahnrad selbst als mechanisches Filter wirksam ist und dazu fest auf seiner Welle sitzt und einen derart elastisch nachgiebigen Teil zwischen Nabe und Zahnkranz enthält, dass eine in axialer Richtung wirkende Kraft von 30 kp eine Ausweichung von mindestens 1 mm ergibt.



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  Film projector with a jerk driven drive roller for the film and a continuously driven shutter
 EMI1.1
 

 <Desc / Clms Page number 2>

 The hub 15, which is firmly seated on the shaft 16, is the resilient part 17. In the event of a shock load or a sudden increase in the forces to be transmitted, the ring gear 14 can yield in the axial direction, as shown in dashed lines in the figure.



    PATENT CLAIMS:
1. Film projector with a jerk driven drive roller for the film and a continuously driven diaphragm for periodic. Dimming of the light beam used to shine through a film image, in which there is a gearwheel as a coupling member in the drive between the drive roller and the diaphragm, which is provided on the circumference with inclined teeth in such a way that a force is exerted on the gearwheel in the axial direction during operation , which is accommodated resiliently by a mechanical filter, characterized in that the gear itself is effective as a mechanical filter and for this purpose sits firmly on its shaft and contains such an elastically flexible part between the hub and the ring gear that a force acting in the axial direction of 30 kp results in a deviation of at least 1 mm.

Claims (1)

2. Filmbildwerfer nach Anspruch 1, dadurch gekennzeichnet, dass das Zahnrad in an sich bekannter Weise aus einem Stück besteht und der Teil zwischen Nabe und Zahnkranz einen Elastizitätsmodul aufweist, der kleiner als 500. 000 kg/cm2 Íst. 2. Film projector according to claim 1, characterized in that the gear consists of one piece in a manner known per se and the part between the hub and the gear rim has a modulus of elasticity which is less than 500,000 kg / cm2. 3. Filmbildwerfer nach Anspruch l oder 2, dadurch gekennzeichnet, dass das Zahnrad in an sich bekannter Weise aus durch Faserstoffe verstärktem Kunstharz hergestellt ist. 3. Film projector according to claim l or 2, characterized in that the gear wheel is made in a manner known per se from synthetic resin reinforced by fiber materials.
AT687459A 1958-09-25 1959-09-22 Film projector with a jerk driven drive roller for the film and a continuously driven shutter AT222502B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL222502X 1958-09-25

Publications (1)

Publication Number Publication Date
AT222502B true AT222502B (en) 1962-07-25

Family

ID=19779449

Family Applications (1)

Application Number Title Priority Date Filing Date
AT687459A AT222502B (en) 1958-09-25 1959-09-22 Film projector with a jerk driven drive roller for the film and a continuously driven shutter

Country Status (1)

Country Link
AT (1) AT222502B (en)

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