AT274561B - Toothed locking device for film transport and / or shutter lift devices of photographic cameras - Google Patents

Toothed locking device for film transport and / or shutter lift devices of photographic cameras

Info

Publication number
AT274561B
AT274561B AT640067A AT640067A AT274561B AT 274561 B AT274561 B AT 274561B AT 640067 A AT640067 A AT 640067A AT 640067 A AT640067 A AT 640067A AT 274561 B AT274561 B AT 274561B
Authority
AT
Austria
Prior art keywords
locking device
film transport
lift devices
photographic cameras
pawl
Prior art date
Application number
AT640067A
Other languages
German (de)
Original Assignee
Pentacon Dresden Veb
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 Pentacon Dresden Veb filed Critical Pentacon Dresden Veb
Application granted granted Critical
Publication of AT274561B publication Critical patent/AT274561B/en

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Description

  

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    und3gehalten   wird, verhindert das Rückdrehen des Sperrades, bevor der Aufzug beendet ist. Am Ende des Aufzuges gelangt die   Nase-4-in   den Bereich der   Sperrzähne-8-der   Sperrklinke   --6-- und   verschwenkt diese aus der   Verzahnung --3-- des Sperrades --1--,   wodurch sich die Sperrklinke--6--an den Anschlag--12--anlegt (Fig. 3). Durch diese Schwenkbewegung der   Sperrklinke --6-- verläuft   aber nun die Wirkungslinie der   Zugfeder --11-- rechts   neben dem Zapfen --7-- der Sperrklinke --6--, was zur Folge hat, dass diese von der Zugfeder-11verlässlich in der Nichtgebrauchslage gehalten wird. 



   Durch das Ausschwenken der   Sperrklinke --6-- aus   den   Sperrzähnen-3-kann   das Sperrad   - l-durch   eine nicht dargestellte Feder im Uhrzeigersinn in seine Ausgangslage zurückkehren. Am Ende dieser Rückkehrbewegung trifft die   Nase-5-auf   die Klinke --9-- der Sperrklinke --6-und schwenkt diese wieder in die Sperrstellung,   d. h.   bringt diese wieder in Eingriff mit den   Sperrzähnen--3--.   Die Wirkungslinie der   Zugfeder --11- verläuft   nun wieder links neben dem Zapfen--2--, so dass die   Sperrklinke--6-verlässlich   in Sperrstellung gehalten wird. 



  Darüberhinaus wird ein sofortiges Sperren im Teilungsintervall eines Sperrzahnes erreicht. 



   PATENTANSPRÜCHE : 
1. Zahnrichtgesperre für Filmtransport- und bzw. oder Verschlussaufzugsvorrichtungen photographischer Kameras, bestehend aus einem Sperrad und einer mit dessen Sperrverzahnung zusammenwirkenden, unter Belastung einer Feder stehenden Sperrklinke, die nach einer bestimmten Verdrehung des Sperrades mit dessen Verzahnung ausser Eingriff gebracht wird, wodurch das Sperrad in 
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 der Sperrverzahnung (3) des Sperrades   (1)   je eine Nase (4, 5) vorgesehen ist, die mit Anschlägen (8, 9) an der Sperrklinke (6) zusammenwirkt und diese in die   Sperr- bzw.   in die Nichtsperrstellung verschwenkt, wobei die Sperrklinke (6) durch eine Feder (11) in der Sperrstellung gegen die Sperrverzahnung (3) und in der Nichcsperrstellung, nach überschreiten des Kippunktes, gegen einen gehäusefesten Anschlag (12) gedrückt wird. 
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    and3 is held, prevents the ratchet wheel from turning back before the elevator is finished. At the end of the lift, the nose-4-reaches the area of the ratchet teeth-8-of the pawl --6-- and swivels it out of the toothing --3-- of the ratchet wheel --1--, whereby the pawl is 6 - on the stop - 12 - rests (Fig. 3). Due to this pivoting movement of the pawl --6--, however, the line of action of the tension spring --11-- runs to the right of the pin --7-- of the pawl --6--, which has the consequence that it is removed from the tension spring- 11 is reliably held in the non-use position.



   By swiveling the pawl --6 - out of the ratchet teeth-3 - the ratchet wheel - l - can return clockwise to its starting position by a spring (not shown). At the end of this return movement, the nose-5-hits the pawl -9- of the locking pawl -6-and swivels it back into the locked position, i.e. H. brings them back into engagement with the ratchet teeth - 3--. The line of action of the tension spring --11 - now runs again to the left of the pin - 2 - so that the pawl - 6 - is reliably held in the locked position.



  In addition, an immediate locking is achieved in the pitch interval of a ratchet tooth.



   PATENT CLAIMS:
1. Toothed locking device for film transport and / or shutter lift devices of photographic cameras, consisting of a ratchet wheel and a ratchet pawl that cooperates with its ratchet teeth and is under load on a spring, which after a certain rotation of the ratchet wheel is disengaged from its teeth, whereby the ratchet wheel in
 EMI2.1
 the locking teeth (3) of the ratchet wheel (1) each have a lug (4, 5) which interacts with stops (8, 9) on the pawl (6) and swivels it into the locked or non-locked position, whereby the locking pawl (6) is pressed by a spring (11) in the locking position against the locking toothing (3) and in the non-locking position, after the tipping point has been exceeded, against a stop (12) fixed to the housing.
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AT640067A 1967-03-22 1967-07-10 Toothed locking device for film transport and / or shutter lift devices of photographic cameras AT274561B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD12353467 1967-03-22

Publications (1)

Publication Number Publication Date
AT274561B true AT274561B (en) 1969-09-25

Family

ID=5479267

Family Applications (1)

Application Number Title Priority Date Filing Date
AT640067A AT274561B (en) 1967-03-22 1967-07-10 Toothed locking device for film transport and / or shutter lift devices of photographic cameras

Country Status (1)

Country Link
AT (1) AT274561B (en)

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