DE7401582U - Motorized camera - Google Patents

Description

A. GRÜNECKER M. a · »* * * 1 * DlPU-IMQ t ■ »·« * «» H. KINKELDEY
UR-INQ f '"' PATE WTA N W / STLl TE W. STOCKMAIR DHlNa AoEICALTtCH K. SCHUMANN

OR RER NAT ■

P. H. JAKOB

DlPL-INa

G. BEZOLD

DOHERNAT DlFV-OCM

MUNICH

E. K. WEIL

OR RER GEC MG

LINDAU

8 MUNICH 22

MAXlMlLtANSTRASSE 43

February 13, 1975 G 745 - Wf i

FUJI PHOTO OPTICAL Co., Ltd.

1-324- Uetake-cho, Oiaiya-shi, Japan

Motorized camera

The invention relates to a motor-driven camera in which the shutter is motor-driven stretched or opened and the film is transported further. More particularly, the invention relates to an automatic motorized camera in which the shutter is cocked and the film automatically shifts one frame to one Release of the shutter is transported further.

Automatic motor-driven cameras in which an electric motor automatically reacts to a trigger signal the film is transported further and the shutter is cocked are known per se. Such are motor-driven ones in particular Cameras for the 35 mm film format have become known. Most common motorized cameras will work the camera controlled by mechanical devices. Such mechanical controls are complicated in structure and high Weight and, accordingly, there is a large increase in the total weight and price of the camera,

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Another disadvantage of known dera.rtiger Karaera3 is that the Control mechanism cannot be used in any other way, than the control mechanics in their mechanical parts for the special camera designed ict. Furthermore, it is difficult to change the timing of the work of the camera in such cameras as it is determined and constructed, because the control device consists of mechanical parts.

The object of the present invention is to provide a motor-driven camera that has a simple mechanical structure, little Has weight and small size. In particular, with this camera, part of the sequence of its mode of operation is intended to be simple be changeable.

This task is carried out by a motor-driven one as stated at the beginning Camera solved, which is marked according to the invention istj as indicated in the characterizing part of claim i is. Further refinements and developments according to the invention emerge from the subclaims.

The motor-driven camera according to the invention has the advantage on that they have a particularly simple mechanical structure is light in weight and small in size. With this training it becomes possible for the control to be essentially electrical Circuits to use. The mechanical structure has a connection with the freely selectable electrical controls the advantage that they can be used for different types of cameras.

The motor is started to cock the shutter and to advance the film after the shutter is released and it is stopped after completion of tensioning and onward transport .

As is known per se from "known motor-driven cameras" is, is an electric one in the inventive camera Motor provided, which controls the mechanics in the camera

\ drives. This mechanism can be combined with an electrical one

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Control can be provided in which a switch implemented as a transistor circuit is provided. which is controlled by a flip-flop circuit located between the motor and the supply voltage b. An electrical signal, which is generated when the shutter has been released, is sent to a flip-flop circuit, which closes the switch, implemented as a transistor circuit, and starts the motor. When the motor is started, the film is advanced by one frame and the shutter is cocked or opened. After the tensioning process of the shutter has been completed and the film has been transported further , a further signal is generated which is fed to the flip-flop circuit in order to open the switch implemented in the transistor jamming circuit and stop the motor. In connection with such an electrical control device, the mechanical structure can be considerably simplified, and there is the further advantage that the necessary control devices can be implemented and adapted in an extremely simple manner in order to use the present mechanical structure in various types of cameras.

In the following, the invention will be explained in more detail with reference to an embodiment shown in the drawing. In the drawing show:

Fig. 1 is a block diagram of the basic principle of the control system for controlling the operation of a according to motorized camera embodied in the invention;

2 shows a schematic interior view of a motor-driven camera according to the invention;

Fig. 3 is a perspective view of the essential parts of an AusfÜ; ungsbeispiels the invention Control mechanism, the closure mechanism being omitted in this illustration: and

FIG. 4 is not a perspective view of that in FIG. 3 locking mechanism shown.

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1 shows an embodiment of the basic control system for controlling the sequence of operations of a camera driven by a motor, in which the present control mechanism can be used. A circuit 2 of a generator for a release signal is provided, which is connected to the shutter release button 1, as a result of which a signal is generated to start the working sequence of the camera upon release of the camera shutter. Although the shutter is controlled by an electrical switch in the present invention, this switch is referred to herein as a release button because the shutter is opened and closed by the release signal generated in response to its pressure.

A monostable multivibrator 3 is connected to the circuit 2 of the generator for the trigger signal and generates a pulse signal of a predetermined width upon the occurrence of the trigger signal. The width of the pulse generated by the monostable multivibrator 3 corresponds to the exposure time. An amplifier 4 is connected to the multivibrator 3 in order to transmit the pulses from the monostable multivibrator 3 to a transistor switch 5 su, which is connected to an electromagnet or solenoid o in order to open the shutter. In accordance with the rise of the pulse of the multivibrator 3, the transistor switch 5 becomes effective to turn off the solenoid 6, whereby the shutter is opened. A time constant circuit 7 is provided which comprises an integrating circuit for setting the shutter speed and which is connected to the monostable .Multivibrator 3. This time constant circuit 7 for setting the shutter speed or time is connected through an amplifier 8 and a transistor 9 to an electromagnet 10 with which the shutter is closed. The time constant circuit 7 is also activated in accordance with the rise of the pulse generated by the multivibrator 3 and accordingly the solenoid 10 is switched off to close the shutter when the time given by the circuit 7 has elapsed.

7401512

With the monostable multivibrator 3 is a flip-flop circuit 11 connected to the drop in the pulse of the multivibrator appeals to. The flip-flop circuit 11 is via an amplifier 12 and a transistor switch 13 with an electrical Motor H connected, the switch 13 controlling the motor 14 turns on and off. On the fall of the pulse of the multivibrator 3, the flip-flop circuit 11 is active, uai the To close transistor switch 13 and to put the motor 14 in motion. The flip-flop circuit 11 is provided with a switch 15 Mistake. This switch 15 generates a signal after the film has been advanced and the shutter cocked after closing the closure is complete.

The monostable multivibrator 3 is provided with a circuit 16 for generating a signal about the completion of the workflow tied together. The circuit 16 generates a signal as soon as the rotation of the motor has completely stopped. Between Multivibrator 3 and circuit 16, a changeover switch 17 is inserted, with which the camera can switch between a mode of operation for single shots and a mode of operation with continuous shots is selectable switchable. When the switch '7 is on continuous Recordings is switched, the signal of the circuit 16 on the completion of the workflow on the multivibrator 3 after a work cycle or a recording of the camera has ended, in order to follow the working method to repeat.

When working the camera with the control system described above, the circuit 2 of the generator for eil. Trigger signal generated by pressing the release button 1. This trigger signal reaches the monostable Multivibrator 3 and generates a pulse signal there with a pulse width corresponding to the exposure time of the shutter.

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According to the increase in the pulse of the multivibrator 3, the amplifier 4 and the time constant switch 7 are activated and the solenoid 6 for opening the shutter is switched off in order to open the shutter 3 immediately. After the time set by the circuit 7 has elapsed, the solenoid 10 for closing the shutter is turned off and the shutter is closed. This completes the exposure of the picture. On the other hand, the pulse of the multivibrator 3 is toward the flip-flop circuit set in motion to the waste to close the Transitorschalter 13 and thus to set the motor '! 4 in transition. In this way the motor starts rotating after the shutter is closed.

The rotation of the motor 14 increases the length of the film of an image is moved further and the shutter is cocked for a subsequent exposure. When the film transport and that Closing clamping has taken place, the switch 15 delivers Signal on the completion of these processes, this signal being fed to the flip-flop circuit 11, whereby the transistor switch 13 is opened and the motor 14 is switched off. The preparations for the next exposure are now complete.

If you want to work with continuous recordings is, the multivibrator 3 is fed via the switch 17, a signal that is in the circuit 16 for generating a signal has been generated about the completion of the workflow. This feed takes place after the motor 14 has come to a complete standstill and a working cycle of the camera has completely ended. The operation; the camera will do this automatically repeated.

It should be noted that the constant circuit 7 can be replaced by a circuit for automatic exposure time, which determines the lighting or holiness of the object to be photographed and changes the time of the workflow or the exposure according to the lighting

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or adjusts. It should also be noted that the closure on pressing the release button 1 instead of using the solenoid 6 to open the shutter mechanically can be opened. On the basis of the construction principle of the present invention, different © «fide-ne Modifications and variations can be provided, which emerge from the claims and in more detail below to be discribed.

With reference to FIGS. 2 to 4, an embodiment is intended below a control mechanism are described, which you in particular in connection with the overall control system shown above lets use. The embodiment is described in connection with a motor-driven camera in FIG a 127 mm wide roll film with a 9 χ 12.5 cm image format is used. This camera will be made ready for recording automatically, by closing the switch for the supply voltage after this switch is closed, a simple one is sufficient Press the release button down to open the shutter and close it again, and advance the film 1 bit further and cocking the shutter in preparation for the next exposure. Furthermore, if the switch 17 is on continuous Exposure is switched on, the operation of the camera repeats itself, as this operation is described above, automatically while the shutter release button remains pressed for continuous exposure.

Reference is now made to FIG. 2, in which a schematic Construction of a motorized camera according to the invention is shown loaded with roll film. details which correspond to FIG. 1 have the same reference numerals. A release button 1 is located on the camera housing 20 intended. A shutter 21 is located between the lenses 22 which are built into the camera housing 20. Inside the case there is an electric motor 14 with which the film is transported and the shutter is cocked. The film 25 is unwound from a film supply spool 23 and onto a

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Take-up reel 24 wound up. The film runs over a film guide roller 26, past a film pressure plate 29, over a roller 27 of a measuring mechanism with a pressure roller 28. The pressure roller 28 is pressed against the roller 27 so that the x-JLxiü cj uS-SWioCiieJU ÖlCiiSr 6iJUEc-rvj-SiuIIjiu xo ν /. xjSx Wj-S xH

As shown in the operation of the camera, the motor 14 is switched on the supply voltage for the camera is set in rotation by closing the power switch and the film pressure plate 29 is lifted from the film 25 and the film 25 is transported. After the film transport is finished, the film pressure plate 29 is pressed against the film 25, so that the film lies smoothly in the focal plane. On the other hand, while the film 25 is being transported, the winding or tensioning starts of the shutter 21, and when the shutter cocking is completed, the parts for the shutter cocking are restored in their original position and the preparations for taking pictures are complete. When the release button 1

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gBUi'UUJS-li WXJ-U, WXX ^- U Uaa VeXSUXIXUJS-UUSXUOCSXgIlSlX CXZiCUgIi UUU the shutter 21 is opened and closed, whereby an exposure or a recording takes place. The signal which is generated after the closure of the shutter is complete, the motor 14 is activated again in order to transport the film and cock the shutter, whereby the preparations for a subsequent exposure are made. In this way, the camera works automatically to take a picture and prepare the next picture when the shutter button is pressed once. If the recording of an image sequence is desired, the shutter 21 is triggered by a signal which is generated after the preparations for the following recording have been completed. Continuous recordings or the recording of continuous images with a camera according to the invention is described in detail below.

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Fig. 3 shows the essential mechanical construction of a camera according to the invention, with the exception of the shutter mechanism is. The explanation of the mode of operation of this construction begins with the start-up of the motor 14 for completion the preparation for the subsequent recording is planned. On the drive shaft Ha of the motor 14, a drive gear 50 is attached, which the revolutions of the motor 14 on a gear 54 via a series of intermediate gears 51, 52 and 53 transmits. The gear 54 is fixed coaxially with a cam 55 by which the film pressure plate 29 is actuated will. The cam 55 rests on a cam follower 56 a of the drive lever 56 of the film pressure plate. The lever 56 is located on a shaft 56b on which two further drive levers are attached. The other levers 57 are with the plate 29 connected to the lugs 57a of the same. The film pressure plate 29 is under spring tension by a tension spring 29a which it is lifted off the film 25 * When the cam 55 from the Cam follower 56a is withdrawn, the lever 56 is moved by “the force of the spring 29a v * -. . plate 29 from film 25 picked up. When the cam 55 is rotated counterclockwise to drive and move the cam follower 56a, will the drive lever 56 is pivoted clockwise and the further levers 57 mentioned are moved clockwise and the plate 29 is pressed against the film 25.

The film take-up reel 24 is coaxial with the pinion 69, which meshes with the intermediate gear 52, in one direction acting slip clutch 58 and a dividing ratchet 59 connected, into which a pawl 60a latches, which is fastened to one end of a partitioning lever 60. On the other end, the lever 60 has a cam follower pin 60b which in turn engages a release cam 61 of a grading lever. So that even if the pinion

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Rotated by the intermediate ten wheel 52, the spool 24 is not rotated in accordance with the action of the clutch 58 while the pawl 60a is in engagement with the ratchet 59 of the winding spindle 24. The release cam 61 of the division lever is on a pinion 6? attached to the intermediate gear 5? meshes so that the release cam 61 is indirectly connected to the drive cam 55 of the i-'ilmandruckplatte. The timing for the rotation of the two cams 61 and 55 is selected so that the graduation lever 60 is lifted from the ratchet 59 after the film pressure plate 29 has been raised and removed from the PiIm 25. Accordingly, after the plate 29 is lifted from the film, the rotation of the motor 14 is transmitted to the film take-up reel 24 via the gear 50, the idler gears 51 and 52, the pinion 69 and the clutch 58, whereby the film transport is started. The film 25 is made by

the supply reel 23 unwound and from the reel 24 via the film guide roller 26, the roller 2? wound up for the measuring mechanism and the pressure roller 26. With the roller 27, the length of the film transported through between this roller 27 and the pressure roller 28 is measured. The roller 27 is provided with a gear 52 which meshes with a gear 63 which in turn is attached to a graduation lever 64 which is in engagement with a projection 60c of the graduation lever 60. When the roll has been rotated 27 for the measuring mechanism during transport of the film by a predetermined length, the division lever 64 in a position up been rotated, in which the ¹ J origin 60c falls into the recess 64a of the Einteilungsnocken3 the lever 60th When the projection 60c of the indexing lever 60 has fallen into the recess 64a of the indexing lever 64, the pawl 60a comes into engagement with the ratchet 59, whereby the latter and the fila take-up spool 24 are stopped, whereby the clutch 58 slips so that the film transport is stopped. When the movie is by the predetermined length of a

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Image v; is vforden transported, the cam 55 to drive the film pressure plate according to its assignment Turned counterclockwise to Hgtor 14 to get the Drive "bshe" lever 56 clockwise and rotate the film pressure plate 29 to press against the film 25.

The intermediate gear 52 also meshes with a gear 65ι aas is mounted coaxially on a cam 66 to indicate the completion of this workflow. This cam 66 is in engagement with the switch 15 for generating a signal which is generated in response to the completion of the film transport and the shutter tension. When the shutter is cocked and the film has advanced the predetermined length, the switch 15 is closed by the cam 66 and the signal is generated which indicates the completion of the shutter cocking and the film transport. In response to the generation of this signal, the motor 14 is stopped as mentioned above in connection with FIG. 1. The intermediate gear 52 is further provided with a gear 68 which is assigned to the shutter tensioning mechanism, which will be described below, so that the shutter is tensioned during the above-described operational sequence of the camera.

The construction and operation of the Closure mechanism, including the mechanism for tensioning or pulling open the closure, is described in detail in connection with FIGS. It's a first

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Shutter winding shaft 701 provided, which at its one End has the aforementioned gear 68 which meshes with the intermediate gear 52. At its other end it has a bevel gear 702 that is parallel to the shafts of the intermediate gears 51, 52 and 53. A second locking winding shaft 704 is provided, which has a bevel gear 703 at one end. that meshes with the bevel gear 702 mentioned. At the other end it is with one end of a third lock elevator shaft 705 in Connection, which in turn has a gear at its other end having. The gear 706 meshes with a gear 707 which is mounted on one end of a fourth shutter elevator shaft 708 is. This has a semicircular toothed wheel 709 at its other end. A spur (toothed) wheel meshes with the toothed wheel 709 710, which is mounted on a fifth closure winding shaft 711. This has a wheel 712 at one * end, which is connected to a Pin couples. The fifth shaft 711 is spring-loaded rotated in the direction of rotation indicated by an arrow 711a. The spring tension is generated by a helical spring 711b which is wound around the shaft 711. With one turn of the semicircular gear 709, the spur gear 710 is rotated 180 ° and then by the force of the spring 711b turned back. The wheel 712 coupling with the Sxift has one Coupling pin 712a, the one with a coupling pin 713a Pin coupling wheel 713 comes into engagement, which on a The end of a sixth locking elevator shaft 714 is attached is. The sixth winding shaft 714 has at its other end a ring 71 for driving the shutter, this being Ring is rotatably mounted on the shaft. A ring section 71a is attached to the ring 71 and has two radially

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has extending end surfaces 71b and 71c. A cam 72 for closing the shutter is integrally connected to the sixth shutter winding shaft 714, this cam being located between the ring 71 and the aforementioned wheel 713. A helical spring 73 is in engagement between the cam 72 for closing the shutter and the ring 71 for driving the shutter. One end 73a of this spring is attached to the cam 72 and the other end 73b of the spring engages between the end surfaces 71b and 71c of the ring portion 71a. Can be made between the N _o 72 for the closing of the shutter and the coupling with wheel pin 713, a flange 715 is provided which is mounted on the sixth shaft 714th Between the flange 715 and the aforesaid cam 72 there is a bearing 716 which is fastened to a part 717 of the lock housing, the bearing holding the sixth lock winding shaft 714 in a rotatable manner. A coil spring 74 is provided which is interposed between the flange 715 and the bearing 716 such that the spring 74 is tensioned when the flange 715 is rotated in the direction indicated "by" arrow 714a. The bearing 716 is provided with a plurality of engaging parts or indentations 716a which enable the tension of the spring wound around the sixth shaft 714 to be adjusted by selecting an appropriate indentation. When the cam 72 provided for closing the closure is brought into rotation in the direction of the arrow 714a, the spring 73 is also tensioned, provided that the ring section 71a is blocked or held. In this way the sixth ·. Shutter winding shaft 714 in the direction of arrow 714a, the helical springs 73 and 74 are both tensioned. The ring portion 71a is in contact with a pawl 75a formed on one end of the shutter opening lever 75. This lever 75 is pivotally mounted on a hinge pin 75b. The other end of the shutter opening lever 75 is provided with a fork-shaped portion 75c in which a pin 76a engages, which is located on one end of a shutter opening actuating-

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hebeis 76 is located. This lever 76 is pivotally mounted on a hinge pin 76b. The other end 76c of the lever 76 is assigned to the solenoid 6 for opening the shutter, in such a way that the lever is pulled when current flows through the solenoid 6, ie is switched on. The operating lever 76 is biased by a spring 76d which tends to move the end 76c away from the solenoid 6. The cam 72 provided for closing the shutter comes into contact with a pawl 77a formed on one end of a lever 77 for closing the shutter. This lever 77 M- mounted pivotably on a hinge pin 7? B _¥ The lever

77 is operated by means of a shutter-closing operating lever

78 pivoted, which is designed similar to the lever 76.

The actuating lever 78 is associated with the solenoid 10 for closing the shutter and is pretensioned by means of a tension spring 78a which tends to pull the lever away from the solenoid. When current flows through the solenoid 10, the actuating lever 78 is sucked in by the solenoid 10 and pivoted in such a way that the pawl 77a comes into engagement with the cam 72. The aforementioned ring 71 for driving the shutter is assigned to the shutter slats 210 by means of a shutter actuating lever 79 which is connected to the three slats. When the ring 71 is rotated in the direction of rotation shown by the arrow 71d, the shutter blades are opened. When the ring 71 is rotated in the direction of arrow 71e, the shutter blades 210 are closed.

During operation of the closure mechanism described in detail in connection with FIG. 4 , current flows through the solenoid 6 for opening the closure and the solenoid 10 for closing the closure upon the closing of the switch. The pawl 75a les shutter opening lever 75 and the pawl 77a dee lever 77 for closing the shutter oi.id both in the contact or engagement position to the. Ring 71 to hold for the drive of the closure and the _o H CKEN 72 for da * Close. When the engine 14 is in motion

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is set, the sixth shutter winding shaft 714 is rotated in the direction of rotation of the arrow 714a through half a revolution of the fifth shaft 711, which in turn is through the half- Τ5 yahnra / i 709 QirraY) nt * ri Μγϊ + λτ · ΛΑ

follow with the gears 50, 51, 52, 68, 702, 703, 706 and is rotated. As a result of the 180 ° rotation of the sixth shaft, the cam 72 is rotated so far that it engages with the pawl 77a of the lever 77. While the sixth shaft 714 is being rotated, the springs 73 and 74 are tensioned by the rotation of the cam 72 and the flange 715 in order to achieve the spring tension. In this way, the shutter opening spring 73 and the shutter closing spring 74 are tensioned. Then, when the solenoid is switched off for the 6 Verschliißöffnung, the end 76c of the Verschlußö'ffnungs operation lever 76 as shown in Fig. 4 rotated by the tension of fire 76d clockwise and the VersohluSc'.ffnungshebel 75 is rotated eigereirm Qegenuhrz-in to the pawl 75a to disengage from the end surface 71b of the ring portion 71a of the ring 71. In this way, the ring 71 for driving the shutter is rotated in the direction of arrow 71d in order to open the shutter blades 210 by the force of the spring 73. Then, when the power to the closing solenoid 10 is turned off after a time predetermined by the shutter speed, the lever 78 is released from the solenoid and rotated counterclockwise by the tension of the spring 78a. Correspondingly, the lever 77 is rotated clockwise to close and the pawl 77a is disengaged on the cam 72. Accordingly, the squat 72 is rotated to close by the force of the spring 74 counterclockwise. Because the ring 71 is engaged with the end 73b of the spring 73 at the end surfaces 71b and 71c thereof, the counterclockwise rotation of the cam 72 causes the end 73b of the spring 73 to abut the end surface 71b of the ring portion 71a. Therefore, the ring 71 for driving the shutter is rotated in the direction of arrow 71e and the shutter blades 210 are closed when the cam 72 is released and rotates counterclockwise. Since the fifth wave 711 under

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tension of spring 711b is in the direction of arrow 711a, this fifth shaft 711 is returned to its original position by the 180 ° rotation by the semicircular gear 709 turned back and released by this.

The control mechanism described in connection with FIGS is operated by the electrical control circuit shown in FIG. According to one embodiment of a motor-driven camera are preferably also a motor braking device and a device for Prevention of malfunctions provided in the camera.

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Claims (1)

PATENT LAWYERS A. GRUNECKER CWt_ 'NG H. KlNKELDEY W. 5TOCKMAIR DR ING Ae £ ICALTtOt K. SCHUMANN OR RER MAT CMPL PNYS P. H. JAKOB D ^ .NG G. SEZOLD DR REH ΓΊΑΤ DiPL-OtM MUNICH E. K. WEIL DR REH CeC INL. LINDAU MUNICH 22 MAXIMILIANSTRASSE 43 Λ1. February 1975 FUJI PHOTO OPTICAL Co.Ltd.
G 745 Protection claims 1. Motorized camera with one in a camera housing located motor for tensioning the shutter and for further transport of the film, d u r c h characterized in that the motor (14) is drivingly connected to a transmission with a center gear (52) which is connected to a first pinion (69) for Drive the film, a second pinion (67) to release the film lock, a third pinion (68) to Tensioning the lock and a fourth pinion (65) TELEPHONE (Oae) 229aS2 TELEX OB - 29 SBO TELEGRAMS MONAP 7401582 07/17/71 combs to operate a Kontaktschalt3rs (15) η- ¹ ^ h termination of the film transport. 2. Camera according to claim 1. ca el urchfe indicates. that the Kittelznhnrad v ^ " ^: " ^! - If necessary, via intermediate gear wheels (5;) "j is in drive connection with a fifth pinion (54) ZJr actuation of a film pressure plate (29). 3. Camera according to claim Λ or 2. characterized in that the ersce pinion (69) is connected via a slip clutch (58) to the We2Ie of the film take-up reel (24) that a ratchet wheel (59) on the shaft of the film take-up reel (24) it is provided that a pawl (60a) is provided on a pivotable lever (60) and can be brought into storage riff with the ratchet wheel (59), and that the lever (6o) is provided for pivoting with a second pinion (67) connected actuator; snock (61) can be brought into engagement. 4. Camera according to one of the preceding claims. characterized by dc'i the the lever (60) carrying the pawl (60a) in contact with a projection (64c) stimulates this projection in a predetermined angular position to lock the ratchet wheel in a corresponding recess (64a) receiving roller (64) is biased. ^. Camera according to Annoruch 4. characterized in that the roller (64) is in drive connection ^{with a roller (n 7) which transmits the feed movement of the film.} 7401582 07/17/75 6. Camera according to one of claims 2 to ^, characterized in that the fifth on the Wells dec. Pinion (54) a cam (55) is provided which engages with a cam follower (5 ^ a) provided on a pivoting actuating lever (56) of the film pressure plate (29) which is resiliently biased against the film. 7. Camera according to one of claims 1 to 6, characterized in that on the shaft of the fourth pinion (6p) after the completion of a film advance to generate a display signal a contact (15) actuating cam (66) is attached. 8. Käffleiä SäCh cxlieiu of claim 1 bl3 7i d S = through ge ken η indicates that the third pinion (68) is in drive connection via an intermittently effective gear (709, 711, 712.713) with a shaft (71'0 rotatably mounted in the housing (717), that a shaft (714 is provided rigidly) connected to the retaining cam (72), that a locking engagement (7I6) having Direction, on the shaft (714) freely rotatable ring (71) · connected to an operable upon rotation of the ring (71) shutter operating mechanism v79) is, it is provided that a first between the housing (717) and the shaft (714) and a second between the retaining cam disk (72) and the ring (71) effective and when the shaft (714) rotates tension (74, 73) is provided. and that a first pawl (75), which can be actuated with the aid of a first magnetic coil (6) and normally engages with the locking engagement (71b) of the ring (71), and a second, actuatable with the aid of a second Tfegnetspule (10), in the tensioned state of the first 7401582 07/17/75 second spring ι · · · *
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* - 4- - and (73, 740 with the Retaining cam (72) Pawl (77) are provided. 9 · Camera according to claim 8, characterized in that the pawls (75, 77) each consist of a double-arm lever, whose free ends each engaging one end respectively a further two-armed lever (76, 78) are available when the first or second magnet coil is excited (6, 10) are each pivotable against the bias of a spring (76d, 78a).