DE300769C

DE300769C -

Info

Publication number: DE300769C
Application number: DENDAT300769D
Authority: DE

Description

Gegenstand der Erfindung ist ein Kinemato-The subject of the invention is a Kinemato-

■ graphenapparat zur Aufnahme, zur Vorführang und zum Kopieren von Filmbildern, bei welchen die absatzweise Fortschaltung des Bildes im Bildfenster durch Greifer erfolgt. Während aber bisher bei derartigen Apparaten sowohl■ graph apparatus for recording, for demonstration and for copying film images, in which the intermittent advancement of the image in Image window is done by gripper. While so far with such apparatus both

:. ₍ zum Vorwickeln des Bildbandes als auch zum:. ₍ for pre-winding the illustrated book as well as for

Zuführen zur Aufwickeltrommel je eine in die Durchlochungen' des Bildandes eingreifendeFeed to the take-up drum each one engaging in the perforations of the picture edge

ίο Stift walze erforderlich war, erfolgt auch die gleichmäßig fortschreitende Bewegung des Films mittels Greifer, die von derselben Welle betätigt werden, die den absatzweise schaltenden Greifer antreibt.ίο pin roller was required, the steady progressive movement of the film by means of a gripper operated by the same shaft that drives the intermittent switching gripper.

Der Apparat wird, gegenüber den bisherigen Apparaten, dadurch wesentlich vereinfacht, daß die Wellen für die Stifttrommeln mit ihren Lagern und Zahnrad- oder Kettenantrieben, sowie die Druckrollen für die Stifttrommeln gänzlich fortfallen.The apparatus is, compared to the previous apparatus, significantly simplified in that the shafts for the pin drums with their bearings and gear or chain drives, and the pressure rollers for the pen drums are completely eliminated.

Die sich hieraus ergebenden Vorteile bestehen vor allem in der Vermeidung der Stifträder oder Stifttrommeln, weil die Stifte in wenigen Monaten durch das Bildband so stark abgenutzt werden, daß die / Stifte hakenartig in die Durchlochungen eingreifen und diese beschädigen oder zerreißen, so daß die Trommeln erneuert werden müssen.The advantages resulting from this consist mainly in the avoidance of pin wheels or pin drums, because the pins are so badly worn in a few months by the picture book that the / pins engage like hooks in the perforations and damage or tear them, so that the drums are renewed Need to become.

Ein weiterer Vorteil ist die Vermeidung einer Reihe von Lagern und Rollenachsen und damit die Schmierung, Abnutzung und Justierung dieser Teile.Another benefit is the avoidance of a number of bearings and roller axles and thus the lubrication, wear and adjustment of these parts.

Fig. ι zeigt die Vorderansicht,
Fig. 2 die Seitenansicht, und
Fig. 3 den Grundriß dieser neuen Bewegungsvorrichtung zum gleichzeitigen, stetigen und absatzweisen Fortsehalten von Filmbändern mittels einer Antriebswelle.Fig. Ι shows the front view,
Fig. 2 shows the side view, and
3 shows the plan view of this new movement device for the simultaneous, continuous and intermittent holding of film strips by means of a drive shaft.

An der auf der Grundplatte α befestigten senkrechten Lagerplatte b sind die beiden Lager c und d für die einzige vorhandene Antriebswelle e und den Filmführungskanal f angebracht, der an den geeigneten Stellen mit Durchbrechungen für die Greifer, das Bildfenster -und die beiden Filmschleifen versehen ist. Der Filmführungskanal f wird nach dem Einlegen des Films durch den in gleicher Weise mit Durchbrechungen versehenen Rahmen g geschlossen. Durch eine Stange k verbundene Arme h und i sind an der Welle e drehbar angeordnet. Auf der Stange k sind die Führungsbuchsen der Greifer leicht gleitend verschiebbar. Auf der Welle e befinden sich die Antriebskurventrommeln /, m und η für die Greifer.The two bearings c and d for the only existing drive shaft e and the film guide channel f , which is provided with openings for the gripper, the picture window and the two film loops at the appropriate points, are attached to the vertical bearing plate b attached to the base plate α. After the film has been inserted, the film guide channel f is closed by the frame g, which is provided with openings in the same way. Arms h and i connected by a rod k are rotatably arranged on the shaft e. The guide bushes of the grippers can be easily slid on the rod k. The drive cam drums /, m and η for the grippers are located on shaft e.

Die in geeigneter Weise ausgeschweifte Unterkante der Trommelmäntel I, m, η drückt die Greifer nach unten, während sie durch hier nicht besonders angegebene Zug- oder Druckfedern auf oder in der Nähe der Führungsstange k wieder hochgedrückt werden. Diese Federn können auch fortgelassen werden,, wenn man parallele Doppelkurven anwendet, wodurch die Greifer zwangläufig geführt werden. Das Ein- und Ausschalten der in die Durchlochungen eingreifenden Stifte der Greifer wird durch die stellenweise verdickten Mantel der Kurven^ trommeln vermittels Wmkelhebel bewirkt.The suitably curved lower edge of the drum shells I, m, η presses the grippers downwards, while they are pressed up again by tension or compression springs on or in the vicinity of the guide rod k , which are not specifically specified here. These springs can also be omitted if one uses parallel double curves, whereby the grippers are forcibly guided. The switching on and off of the pins of the grippers that engage in the perforations is effected by means of the cantilever levers, which are thickened in places on the casing of the cam drums.

Es genügen drei Kurventrdmmelnfür alle Filmbewegungen, weil die stetig schältenden Greifer paarweise fest miteinander verbunden sind.Three bends are sufficient for all film movements, because the constantly switching grippers are firmly connected to one another in pairs.

Will man zur Verminderung des GewichtesOne wants to lose weight

Claims

the moving parts avoid the long connecting rods of the gripper, so you have to use a curve drum for each gripper, so a total of five pieces. The grippers consist of the sliding sleeve ο with the frame p, in which the sliding roller q and the spring pressure ram r is mounted with the pin plate s. The angle lever u provided with the sliding roller t is mounted on a lateral projection of the frame p, by which the gripper pins are pressed into the perforations of the picture book at the right time, while when the diameter of the cam drum is reduced, the spring ν pushes them out of the perforation again. To secure the position and sliding of the gripper frame p, a screwable or clampable bar w is attached. The duration of the decline of the grippers, their standstill and their high gear is determined by the shape of the curves of the drum shell used and these are adapted to the respective purpose, depending on whether it is a demonstration, recording or copier apparatus. . For example, the gripper movements take place in a demonstration device - in the following way: When the intermittent switching middle. If the gripper is in its highest position at the beginning of the companionway, it descends and thus the film tape is pulled forward by ig mm during 1Z8 rotation of the cam drum. In order to achieve the greatest possible protection of the film, this gripper movement is expediently not a uniform, but first an accelerated and then a delayed movement, so that - the gripper pins press equally strongly against the edges of the holes at every moment of the film movement, so this always load evenly. During the next V8 revolution of the cam drum, the hook body itself stands still, but the hook pins are pulled out of the perforation. During the next 5/8 revolution of the cam drum, the gripper body moves upwards with the gripper pins retracted. During the next 1/8 revolution of the cam drum, the gripper pins are pushed back into the perforation when the gripper is stationary, whereupon the decline begins again. The continuously switching grippers differ - particularly in their mode of operation. from the intermittent switching that the insertion and removal of the gripper pins does not take place during the standstill, but rather during a movement of the gripper body, which is equal to the movement of the continuously advancing film strip. The movement of such a continuously switching gripper takes place, for example, from its highest position at the beginning of the decline in the following way. During 3/38 rotation of the cam drum, the gripper body descends uniformly by 3 mm and the gripper pins are pushed into the perforation at the same time. During the next half revolution of the cam drum, the descent takes place and thus the uniform or steady pulling out of the film tape by 19 mm. . . During the next 3/38 revolution of the cam drum, the gripper body descends uniformly by 3 mm and at the same time the gripper pins are pulled out of the perforation. During the next 18/38 revolution of the cam drum, the upward movement of the gripper body takes place with the gripper pins retracted, whereupon the decline begins again. Two grippers, which are moved in the same way, intervene one after the other in the film strip, but their movement is exactly opposite at each point in time, which is achieved in the simplest way by the fact that the similar cam drums acting on them are offset from one another by 180 °. Since the gripper movements are reciprocally repeated when the film is drawn up and when it is being passed on, the movement of the gripper of the upper pair of grippers, which is currently going down, can be transferred directly to the equally working gripper of the lower pair of grippers by connecting rods, and the other two in the same sense connect working grippers with each other, so that both the pair of grippers pulling the film strip and the pair of grippers conveying the film strip each need to be driven by a cam drum. Godfather τ-An Proverbs:

1. Cinematograph apparatus with intermittently moved film tape by a gripper, characterized in that the Film tape at the feed and discharge point under the influence of two each Gripper stands, one of which alternates between the perforations of the film strip intervenes while the other, is pulled out, so that a steady continuation is achieved in these places.

2. cinematograph apparatus according to ■ claim 1, characterized in that the

a gripper of the feed point, of the film ' bandes with a gripper of the discharge point working in the same way a rod is connected so that both an upper and a lower gripper is moved by a common cam drum.

3. Cinematograph apparatus according to claim i, characterized in that the cam drums for the film tape with Arranged uniform speed moving pairs of grippers on the same shaft are like the kury drum that actuates the intermittently switching gripper.

1 sheet of drawings.

Berlin. (Printed in the