DE1033505B - Photographic camera with motorized film transport - Google Patents

Description

The invention relates to a photographic camera with a motorized, ζ. Β. through a Spring motor driven film transport. In such cameras it is known that the release mechanism is so to train that after the shutter has been released or after the shutter has run, the film is transported automatically released and the shutter again automatically by a running film transport member is tensioned. In order to realize these interdependent processes, one has hitherto Special shutters used with the film advance mechanism are organically assembled. Such special constructions are relatively expensive and complicated. The invention has the task based on the described functional cooperation between the shutter and the automatic film transport when using a commercially available lock with a tensioning shaft realize. In this context, it has already been suggested that the film transport be triggered of the slide's tensioning shaft, which moves backwards after the shutter has been released to have made. However, this has certain disadvantages because of the force to trigger the film transport must be applied by the locking spring and because also undesirable Continuous shots can arise.

In contrast, the invention consists in that a commercially available one provided with a tension shaft Closure is used in such a way that its release lever by overpassing the locking member of the film transport triggers via a lever mechanism and that the locking member of the film transport on At the end of its way, a gear that works together with the tensioning shaft of the lock actuated a locking voltage. By the fact that you go beyond the release position Überweg exploits the shutter release to trigger the film transport, on the one hand the release force removed from the operator's finger pressure, while the one to cock the shutter required force is applied by the motor drive of the film transport.

In addition, the release lever must return to the rest position in the usual way after each recording, before a new recording can be made. There is a risk of involuntary pressure if the release pressure is too long a series recording is made is therefore eliminated.

An embodiment of the invention is shown schematically in the drawing and below described in more detail.

At the bottom of a camera housing 1, only indicated here, a spring motor 2 is arranged, which is driven by the photographic camera
with motor-driven film transport

Applicant:

ROBOT Berning & Co.,
Düsseldorf, Aachener Str. 21-23

Hans-Heinrich Berning and Willy Franke, Düsseldorf, have been named as inventors

a rotary knob 3 can be pulled up and, with a drive 4 connected in parallel, drives a toothed roller 5 which effects the film transport. The tooth roller 5 carries two protruding locking and driving pins 6, 6 ', which are offset from one another by 180 ° on the same diameter of the tooth roller. A commercially available tension lock 7 is mounted on the front of the camera housing 1, the tensioning shaft 7 of which is extended to the rear and is led out through the housing wall. A toothed sector 8 is attached to the extended tensioning shaft T and meshes with a toothed gear lever 10 mounted at 9. The gear lever 10 has a nose 11 which protrudes into the runway of the locking and driving pins 6, 6 '. When the tooth roller 5 runs off, one of the pins 6, 6 ′ pushes the nose 11 out of the runway, the gear lever 10 being pivoted and brought into the tensioning position shown in FIG. In this tensioned position of the gear lever 10, the nose 11 lies outside the run-off path of the pins 6, 6 '. As a result of the torque exerted on the tooth roller 5 by the spring motor 2, one of the pins 6, 6 ′ rests on an inclined surface 12 of a locking lever 14 mounted at 13. The short blade-shaped end 14 'of the locking lever 14 rests on a locking lever 16 mounted at 15, on which a pawl 18 is mounted at 17. The pawl 18 protrudes into the path of a drive pin 20 attached to the release lever 19 of the lock 7. At 15, another somewhat shorter locking lever 21 is mounted, which is detected by the drive pin 20 when the release lever 19 exceeds its normal release position. When the release lever 19 is depressed and the locking lever 16 is pivoted by the driver pin 20, the cutting edge 14 'is released, but is still caught in the locking position of the

809 559/240

Locking lever 14 on the shorter locking lever 21. When the release lever 19 is pressed further, the driver pin 20 slides off the pawl 18 so that the locking lever 16 goes back under the influence of a return spring 22 and now rests on the cutting edge 14 '. During this process, the shutter 7 has been released and the release lever 19 has reached its normal release position. He, 19, can, however, be depressed even further beyond this position and takes the locking lever 21 with it during this crossing. As a result, the locking lever 14 is released, so that the tooth roller 5 can run and both the film transport and the tensioning of the shutter 7 by the gear 10 _Λ 8 can bring about. The locking lever 14, however, immediately after the locking pin 6 is released, it is caught again on the locking lever 16, so that after half a revolution of the tooth roller 5, the locking pin 6 'is held again by the locked locking lever 14.

When the release lever 19 is released, the locking lever 21 returns to its basic position. Of the Driving pin 20 gets behind the evading pawl 18, and the release lever 19 can thereby also go back to its basic position. So there is a new one for each recording Pressure on the release lever 19 is required, by means of which the pin roller 5 is released.

Claims (3)

Claims: 30 1. Photographisdhe camera with a motorized, z. B. driven by a spring motor Film transport and a shutter, after which the film transport is automatically released and the shutter is tensioned again by a film transport member, characterized in that a commercially available one with a Tensioning shaft provided lock is used in such a way that its release lever by triggers the locking member of the film transport via a lever mechanism and that the locking member of the film transport at the end of its path with the tension shaft of the Closure cooperating gear operated in the sense of a locking voltage. 2. Photographic camera according to claim 1, characterized in that the locking lever (14) the film transport device by two locking levers (16,21) of different lengths in Locked position is held, of which the longer one (16) from the release lever (19) of the shutter (7) is briefly brought into the release position and then into the locking position goes back, the locking lever (14) of the film transport on the shorter one, from the release lever (19) of the lock (7) on its traversable releasable locking lever (21) to the plant comes and at the end of the film transport is caught again on the longer locking lever (16). 3. Photographic camera according to claim 2, characterized in that the release lever (19) of the lock (7) with a driver (20) behind one on the longer locking lever (16) pivotally mounted pawl (18) engages, of which the driver (20) during the movement the lock release lever (19) slides off. Considered publications:
German Patent Nos. 711707, 668 610, 454513, 414 775. 1 sheet of drawings © 809 559/240 6.58