DE171808C

DE171808C -

Info

Publication number: DE171808C
Application number: DENDAT171808D
Authority: DE
Also published as: FR361408A

Description

Die vorliegende Erfindung bezieht sich auf ein Gestell zum Aufhängen und Aufrollen von Karten, Plänen, Bildern und dergleichen Lehrmitteln, bei welchem in einem Rahmen zwei WaI-zen gelagert sind, die durch ein die zur Schau zu bringenden Karten, Pläne, Bilder u. dgl. tragendes Band verbunden sind, so daß durch Drehen einer der Walzen die Karten nacheinander von einer Walze ab und auf dieThe present invention relates to a frame for hanging and rolling up Maps, plans, pictures and the like teaching aids, in which two rolls in a frame are stored, which are to be displayed by the cards, plans, pictures and the like. supporting belt are connected, so that by rotating one of the rollers the cards one after the other from a roller off and on

ίο andere Walze aufgerollt und so zur Schau gebracht werden können. Bei derartigen Gestellen muß je nach der Bewegungsrichtung des die Karte o. dgl. tragenden Bandes diejenige Walze gedreht werden, auf welche das Band aufgewickelt werden soll. Ist das Gestell aber sehr hoch, so ist diese Drehung bei der oberen Walze mit Schwierigkeiten verknüpft. Wird aber die Bewegung von einer, in erreichbarer Höhe liegenden Achse nach beiden Walzen übertragen, so ist zu berücksichtigen, daß die Drehungsgeschwindigkeit je nach dem Durchmesser der Walze, auf welche das Band aufgewickelt werden soll, zwecks gleichmäßiger Bewegung des letzteren eine verschiedene sein muß. Es ist daher unmöglich, beide Walzen gleichzeitig von einem Rade aus anzutreiben. Um nun je nach Wunsch die eine oder andere Walze von einer zwischen beiden Walzen liegenden Achse mittels eines einzigen Handgriffes antreiben zu können, ist nach vorliegender Erfindung diese Mittelachse mit einer fest angeordneten Scheibe versehen, an welche sich zu beiden Seiten zwei Seilscheiben anlegen, die je nach der Bewegungsrichtung der mittleren Scheibe durch Fallen mitgenommen werden und so die jeweils gewünschte Walze antreiben.ίο other roller rolled up and so on display can be brought. With such frames, depending on the direction of movement of the belt carrying the card or the like, the roller on which it is rotated the tape is to be wound up. But if the frame is very high, then this rotation is associated with difficulties at the top roller. But if the movement of an axis located at an accessible height is transferred to both rollers, so is to take into account that the speed of rotation depends on the diameter of the roller, on which the tape is to be wound, for the purpose of smooth movement of the the latter must be different. It is therefore impossible to have both reels at the same time powered by a wheel. To now, depending on your wishes, one or the other roller drive from an axis lying between the two rollers by means of a single handle to be able to, according to the present invention, this central axis with a fixed one Provided a pulley to which two pulleys are placed on either side, depending on the direction of movement of the middle Disc are taken by falling and thus drive the desired roller.

Die Erfindung ist auf der Zeichnung veranschaulicht, und zwar zeigt:The invention is illustrated in the drawing, namely shows:

Fig. ι eine Vorderansicht des Gestelles und der zum Antriebe der Walze dienenden Vorrichtung,Fig. Ι a front view of the frame and the serving to drive the roller Contraption,

Fig. 2 eine Ansicht der auf der Mittelachse sitzenden Antriebsscheiben, teilweise im Schnitt,Fig. 2 is a view of the drive pulleys seated on the central axis, partially in Cut,

Fig. 3 eine Seitenansicht der mittleren Scheibe.Fig. 3 is a side view of the central disk.

In einem viereckigen Rahmen 1 sind in bekannter Weise zwei Walzen 2 und 3 drehbar gelagert und durch ein Band 4, das die zur Schau zu bringenden Karten, Pläne, Bilder u. dgl. trägt, verbunden. Die beiden Enden dieses Bandes sind auf die beiden Walzen aufgewickelt, so daß durch Drehung der einen oder anderen Walze das Band von der einen ab- und auf die andere aufgewickelt wird. Um nun, besonders bei sehr hohen Gestellen, das Drehen der Walzen, insbesondere der oberen Walze, die schwer zugänglich ist, zu erleichtern, ist in gut erreichbarer Höhe in dem Rahmen 1 eine Achse 5 gelagert, die durch einen Handgriff 6 in Drehung versetzt werden kann. Auf dieser Achse 5 sitzt, wie namentlich Fig. 2 erkennen läßt, eine Scheibe 7, die entweder mit der Achse 5 ein Stück bildet oder auf diese aufgekeilt ist. Zu beiden Seiten der Scheibe 7In a square frame 1, two rollers 2 and 3 are rotatable in a known manner stored and connected by a band 4 which carries the cards, plans, pictures and the like to be displayed. The two Ends of this tape are wound onto the two rollers so that by rotation one or the other roller, the tape is unwound from one roller and wound onto the other will. To now, especially with very high frames, the turning of the rollers, especially the upper roller, which is difficult is accessible, to facilitate, is an easily accessible height in the frame 1 Axis 5 mounted, which can be set in rotation by a handle 6. On this Axis 5 sits, as can be seen by name Fig. 2, a disc 7, which is either with the Axis 5 forms one piece or is wedged onto it. On both sides of the disc 7

Claims

pulleys or chain wheels 8 and 9 are arranged, which drive the rollers 2 and 3 by cables or chains 10, 11. The disks 8 and 9 sit loosely on the axle 5, so they are not easily carried along when the same is rotated. However, in order to be able to rotate one or the other of the disks 8 and 9, depending on whether the upper or lower roller is to be set in rotation, two are on the bed sides of the central disk 7 wedged on the axis 5 under the action of springs 12, 13 standing plates 14, 15 are arranged which rotate about hinges 16, 17, the latter being held in place by plates 18, 19. The plates 14, 15 lie in corresponding cutouts of the disc 7 so that they do not protrude against the surface of this disc. In the pulleys 8 and 9, however, on the sides opposite the pulley 7, cutouts 20, 21 are arranged, into which, depending on the direction of movement, the plates or traps 14, 15 fall under the action of the springs 12, 13, when they come into a plane with the cutouts 20, 21. These cutouts 20, 21 respectively. however, the traps 14, 15 are arranged in such a way that only one of the traps engages when moving in one direction, but the other trap must slide freely over the corresponding cutout without being able to cause the corresponding disc to move. With the opposite movement, however, the latter trap will come into operation, while the former cannot cause its disk to rotate. Thus, in the embodiment of the invention shown in Fig. 2, when the axis 5 is moved, respectively. the disc 7 in the direction of the arrow α, the latch 14 engage the incision 20 and also take the pulley 9 along in the direction of the arrow α , so that the roller 2 of the frame receives the desired rotation and thus the belt receives the displacement. During this movement, however, the latch 15 slides freely over the cutout 21 without imparting any movement to the disc 8. When rotating the axis 5 respectively. Disk 7 in the direction of arrow b (Fig. 2), however, the case 15 will come into engagement with the cutout 21 and thus the pulley 8 respectively. rotate the roller 3 in the desired direction while the latch 14 slides freely over the cutout 20 without giving the pulley 9 any movement. Depending on the direction of rotation of the handle 6, the upper or lower roller is driven and thus the desired displacement of the belt 4 is made possible in a simple and expedient manner. The same device can of course also be used in mechanically operated devices if the motor experiences a change in rotation when the belt is shifted after a direction up to the extreme limit.

Godfather τ-An saying:

Device for rotating the rollers of a frame for rolling up cards, Plans, pictures and the like with two stored in a frame and connected by a tape Rollers, characterized in that between the two rolls (2 and 3) on a special axis (5) one provided with spring latches (12, 14 and 12, 15) Disk (7) is seated on which two rollers (2, 3) are connected from both sides Lay rope or the like disks (8, 9) so that depending on the direction of movement of the axis (5) and that with it connected middle pulley (7) one or the other pulley (8, 9) and thereby the roller (2, 3) is also taken along and driven.

1 sheet of drawings.