DE202924C

DE202924C -

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Publication number: DE202924C
Application number: DENDAT202924D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

- M 202924 KLASSE 57a, GRUPPE- M 202924 CLASS 57a, GROUP

LUDWIG BODE in BRAUNSCHWEIG.LUDWIG BODE in BRAUNSCHWEIG.

Die Erfindung besteht in der Vereinigung der Aufziehvorrichtung des Verschlusses mit der \^orrichtung zum Bereitstellen des Spiegels solcher photographischen Reflexkameras, bei denen der im übrigen von dem Verschlüsse getrennt bewegliche Spiegel im Augen·- blicke der Verschlüßauslösung durch Federkraft in solche Lage geschwenkt wird, daß er den durch das Objektiv fallenden Licht-The invention consists in combining the pull-up device with the closure the device for providing the mirror of such photographic reflex cameras, in which the mirror in the eye, which is otherwise movable separately from the shutter view the shutter release is pivoted by spring force in such a position that the light falling through the lens

ίο strahlen den Weg zur lichtempfindlichen Platte freigibt.ίο shine the way to the light-sensitive plate releases.

Diese Einstellung' des Spiegels wird nach der vorliegenden Erfindung mit der Aufziehvorrichtung für den im übrigen selbständig beweglichen Verschluß derart vereinigt, daß die Federn beider gemeinsam gespannt und beim späteren Auslösen getrennt entspannt werden. Da die für beide Vorgänge erforderlichen Drehbewegungen verschieden groß sind, auch bei der Auslösung beide Vorrichtungen sich unabhängig voneinander zurückdrehen müssen, so bedarf die gemeinsame Aufziehvorrichtung einer ganz besonderen Anordnung, wie sie in den schematisehen Fig. 1 bis Jc in zwei verschiedenen Arten dargestellt ist.According to the present invention, this setting of the mirror is combined with the pull-up device for the otherwise independently movable closure in such a way that the springs of both are tensioned together and relaxed separately when triggered later. Since the rotary movements required for both processes are of different magnitudes, and both devices have to rotate back independently of each other when triggered, the common pull-up device requires a very special arrangement, as shown in two different ways in the schematic FIGS. 1 to Jc.

■In allen Figuren bedeutet χ den Teil, der das Aufziehen des Verschlusses, wozu der größere Weg α und b erforderlich ist, herbeiführt, y aber den Antriebteil für das Aufziehen des Spiegels, für das der kürzere Weg b genügt. Die Anordnung ist so getroffen, daß χ sich allein um die Strecke a verschiebt (Fig. 2), dann gegen y trifft und beide gemeinsam nun die Strecke b durchlaufen. Damit aber y unabhängig von χ in die Anfangslage zurückgelangen kann, muß χ jetzt aus der Bahn von y entfernt werden, was durch eine Verschiebung von χ abwärts (Fig. 3) geschehen kann. Hat auch χ die Strecke α und b rückwärts durchlaufen, so muß dieser Stellteil wieder in die Verlängerung der Bahn von y gebracht werden, was durch eine Aufwärtsbewegung erreicht wird. -Auch kann der Teil χ als einseitig' nachgiebiger Schnepper ausgeführt werden, der beim Rückgange dem Anschlage j/" ausweicht und dadurch wieder hinter ihn gelangt.■ In all figures, χ means the part that causes the opening of the shutter, for which the longer path α and b is required, but y the drive part for opening the mirror, for which the shorter path b is sufficient. The arrangement is made in such a way that χ alone shifts by the distance a (Fig. 2), then hits against y and both now pass through the distance b together. But that can move independent of χ y back into the initial position, χ must now be removed from the web of y, which can occur by a shift of χ downwards (Fig. 3). If χ has also traversed the distance α and b backwards, this control part must be brought back into the extension of the path of y , which is achieved by an upward movement. -Also, the part χ can be designed as a one-sided 'flexible snap, which evades the stop j / "when going back and thus gets behind it again.

Eine andere Lösungsform zeigen die Fig. 4 bis 7c. Dort ist ein dritter, selbständiger Bewegungsteil ^ angeordnet, der die beiden anderen, χ und y, bedient. Zunächst nimmt er χ aus der Anfangslage (Fig. 4) bis zur Lage vonj' mit, dann bringt er beide, χ undj^, bis zur Endlage (Fig. 5). Hierauf kann der Teil \ entweder, wie es Fig. 6 zeigt, leer in seine Anfangslage zurückgeführt werden, was mit der Hand oder selbsttätig durch eine bei der Aufziehbewegung gespannte Feder geschieht, oder es kann der Teil ^ in der Bahn der Teile χ und y verharren (Fig. 7 a) und von dem zuerst ausgelösten Teile y um' die Strecke b (Fig. 7 b) und dann von dem rückkehrenden Teile χ bis in die Anfangslage zurückgeführt werden. Hierbei haben die den Spiegel und den Verschluß bedienenden Federn auch noch die durch die Bewegung des Teiles \ verursachte Reibung zu überwinden,Another form of solution is shown in FIGS. 4 to 7c. A third, independent movement part ^ is arranged there, which operates the other two, χ and y. First he takes χ from the starting position (Fig. 4) to the position of j ', then he brings both, χ and j ^, to the end position (Fig. 5). Then, the portion \ either as Fig. 6 shows, be empty returned to its initial position, which automatically done by hand or by a tensioned in the priming movement spring, or it may be the part ^ in the path of the parts χ and y pause (Fig. 7 a) and from the first triggered part y by 'the distance b (Fig. 7 b) and then from the returning parts χ to be returned to the starting position. Here, the mirror and the shutter-use feathers also have to overcome by the movement of the part \ caused friction,

Claims

The movements of the parts χ, y and \ are expediently carried out as rotary movements. In the embodiment according to FIGS. 1 to 3, the rotary knob h (FIG. 8) serving to open the closure has a stop x which, after a certain rotation, hits against a stop y which is connected to the disk d, which is the Bringing up the mirror brings about. In the end position ίο the rotary knob h, which is urged by a spring k towards the disk d, is displaced on its axis of rotation through an inclined plane e, against which a stop / button strikes, so that the stop χ is off track of the stop y is removed. After the shutter has been released, the stop y first returns to its initial position, and the button h is moved back to its original position by the spring k on its axis. So that it can get back to the rear side of the stop y, it is designed to be flexible on one side, so that when it is pulled up again, the stop χ can again grasp behind the stop y. An embodiment of the type explained in FIGS. 4 to Jc is shown in FIGS. 9 to 11. The loosely rotatable button h carries a long stop ^ which, when turned to the right, first detects the stop χ, the toothed wheel that pulls the closure open i is connected, and which, with further rotation, also takes the stop which brings about the tensioning of the mirror spring. The reverse rotation of the button h is possible at any time and can be brought about by a spring k. Instead of starting the opening movements for the shutter and the mirror at different times, you can start them at the same time, but let them end at different times. 12 and 13 illustrate this embodiment according to FIGS. 1 to 3, that is, using one stop χ to move the other y. Here, after covering the common path b, one stop has to give way to the other, so that χ only runs through the path α. The practical implementation of such a closure, based on FIG. 8, does not cause any particular difficulties. The arrangement according to FIGS. 14 and 15 corresponds to that according to FIGS. 4 to 7c insofar as an independent, common drive element is also arranged here, but to which in the middle position the stop y, which is only intended to cover the distance b, must be withdrawn, which can also happen through an inclined plane. You can start the paths of the stops χ and y at the same time and let them end at the same time, if you can control the speeds of the two movements differently. This can be B. happen that the pull-up button h (Fig. 16) is provided with a gear I, which engages in two others, W and n, 'of which the larger, Ot, the mirror, the smaller the shutter. After the winding up, the gear wheel Z is shifted on its axis, preferably again through an inclined plane, so that it comes out of engagement with the wheels ni and η, so they can turn back independently of one another. e patent claims:

1. Reflex camera with separate from the shutter, movable, in its working position spring-loaded mirror, characterized by a winding device, in which the springs of the shutter and the mirror are tensioned by one and the same drive part.

2. Reflex camera according to claim 1, characterized in that the furthest Moving device that requires the path that takes the shorter path with it on the common path, whereupon the interacting driver surfaces give way to each other.

¹ 3. Reflex camera according to claim 1, characterized in that both elevator devices are moved by a driver which can freely rotate back after completion of the elevator movement.

4. reflex camera according to claim 1, characterized by two transmission devices with different ratios between the common drive member and the driven winding devices and a release advance. direction, which after winding up the dependency between the common drive members and the two retractors.

. 1 sheet of drawings.