DE514924C - Device for guiding the picture book in cinema machines - Google Patents

Description

GERMAN EMPIRE

ISSUED ON J3. DECEMBER 1930

REICH PATENT OFFICE

PATENT LETTERING

JVl 514924 CLASS 57a GROUP

LG. Farbenindustrie Akt-Ges. in Frankfurt a. M. *)

Device for guiding the illustrated book in cinema machines Patented in the German Empire on October 9, 1928

• The subject of the invention is a device which is used to insert the illustrated tape in cinematographic apparatus to facilitate.

The picture tape is used in both kine recording and kine playback devices on the one hand between the Fihntür and the picture stage, on the other hand between the pressure rollers and the pre- and post-winding drum. To insert the photo book, the

ίο The roll holder has been lifted off the winding drums and open the fiight door. There are already known devices that a connection between the fiight door and to facilitate the insertion of the foot provide the pressure roller holders or the winding drums in order to be able to with the opening and Closing the film door means lifting and pressing the roll holder at the same time cause. These devices have the major disadvantage that the film is not in the The order in which it is inserted can be determined, namely first on the pre-winding drum, then in the picture window and finally on the rewinding drum, because when the film door closes, all of them at the same time Swivel the other film guide parts into the position of use.

The invention seeks to overcome this disadvantage in that the film door with the Roll holders is connected in such a way that when you open the film door, the roll holder, such as has already been proposed to stand under spring action, automatically from the winding rollers swivel away and after inserting the illustrated book one and the other independently of one another can be closed.

According to the invention this is achieved in that a push rod is connected to the opening lever of the film door in such a way _? that when opening the Fihntür the locking devices of the roll holder are released by means of resilient pawls and a separate closing of the roll holder and the Fihntür is possible by resilient evasion of the pawls. The film door is expediently arranged in a manner known per se on a carriage or slide which can be moved in the direction of the optical axis.

With this device, the loading of the film is made much easier, since each Guide part to be closed after the correct import of the illustrated book can.

In the drawing, a film guide device is shown on which the invention in one embodiment can be seen, namely shows:

Fig. Ι a view of the device,
Fig. 2 a section AB (see. Fig. 1), Fig. 3 and 4 a rear view of the device in the closed and open position.

*) The patent seeker indicated the following as the inventors:

Leo Goldhammer and Wilhelm Baumgärtner in Munich.

Claims (7)

The pre-winding and post-winding drums 2 and 3 and the film door 4 are mounted on the work plate ι. The pressure rollers 5 and 6 are used to guide and press the tape onto the pre-winding and post-winding drums. The pressure rollers 5 and 6 are mounted in the holders 7 and 8. The holder 7 is locked by the nose 9, the holder 8 by the nose 10 in the position of use in such a way that between the pre-winding and post-winding drum and the guide rollers 5 and 6 there is a space corresponding to the thickness of the illustrated book. The front door 4 is fastened on a slide 11 which can be moved back and forth on the work plate 1 in the direction of the optical axis. The double-armed lever 12 can be rotated about the bolt 27. Its outer, longer arm is used for actuation, while its inner, shorter arm carries a bolt 13 which slides in a slot 14 of the carriage 11 and thus transfers the rotary movement of the lever 12 into a pushing movement of the carriage 11 and thus the film door 4. The lever 12 is also connected to a push rod 22 by a disk 18 fastened on its axis 27. The disk 18 has a pin 24 which slides in the slot 17 of the push rod 22. The push rod 22 is slidably mounted on the back of the work plate 1 and is connected with its beveled resilient ends 15 and 16 (see FIG. 2) with the locking devices of the roll holders 7 and 8. The locking device is designed such that axially movable pins 19 and 23 guided in the workplate are provided above the workplate with lugs 9 and 10, respectively, for locking the RoEenhalter 7 and 8 and below the workplate with lugs 20, 21, by means of which the pins 19 and 23 and thus the lugs 9 and 10 are temporarily pulled backwards (ie towards the back of the work plate) when the push rod 22 is displaced by the resilient tabs or pawls 15 and 16 and release the roll holders. However, if the roll holders are pressed against the conveyor drums, the pins 9 and 10 can snap up behind the outer edge of the roll holders as a result of the action of the spring 25 and hold the holders in this position. The springs 26 always seek to pivot the roll holders 7 and 8 away from the pre- and post-winding drums. The mode of operation of the device is as follows: If the lever 12 is rotated in the direction of the arrow indicated (see FIG. 1), the slide 11 with the film door 4 is pulled off the picture window. At the same time, the push rod 22 is displaced upwards by rotation of the disc 18 connected to the lever and the pin 24. As a result, the tabs 15 and 16 slide over the shoulders 20 and 21 of the pins 19 and 23, pull the pins with the noses 9 and 10 located thereon temporarily back and thereby release the locking of the roll holders 7 and 8, so that these pivot the spring 26 into the open position. The picture tape can now be inserted between the pre-winding drum 2 and the rolls 5 and the roll holder 7 can be closed against the action of the spring 26. When the roll holder 7 is pivoted in, the locking lug 9 snaps up and holds the roll holder in the position of use. After the picture book has been inserted into the picture window, the fiight door is closed by pivoting the lever 12 back (in the direction of the arrow). This movement is not hindered by the lugs 20 and 21 of the pins 19 and 23, since the tabs 15 and 16 give way to the lugs resiliently. Finally, the photo tape is inserted between the rewinding drum 3 and the rollers 6 and the holder 8 is closed and locked in the same way as the RoEenhalter 7. Patent claims :! 1. Device for guiding the illustrated book in cinema machines in which all film tape guide parts are opened by opening the fiight door simultaneously swivel into the open position, characterized in that that the simultaneous opening of all parts takes place in such a way that they are independent of one another and to be closed one after the other at any time. 2. Apparatus according to claim 1, characterized in that the locking devices (9, ιό) the roll holder (7, 8) by opening the Fihntür (4;) are released and the holder through Swivel the spring action automatically into the open position. 3. Apparatus according to claim 1 and 2, characterized in that the in on in a known manner the Fihntür influencing lever (12) with a push rod (22) is in connection, the resilient tabs (15, 16) at the same time Release the lock (9, 10) of the roll holder (7, 8). ' 4. Apparatus according to claim 1 to 3, characterized in that the resilient Tabs (15, 16) when moving back the push rod (22) give way to the locking lugs (20, 21) resiliently. 5. Apparatus according to claim ι to 4, characterized in that the operating lever (12) carries a pin (13) which in a slot (14) of the carriage (11 j slides and so the rotary movement of the Lever transfers into a pushing movement of the carriage with the film door. 6. Apparatus according to claim 2 to 5, characterized in that the locking pins (19, 23) are pressed against the roll holders (7, 8) by springs (25) and when swiveling in the roll holder they lock automatically. 7. Apparatus according to claim 3 to 6, characterized in that the push rod (22) slidably mounted below the work plate and through the slot (17) and the pin (24) with the lever (12) is connected. 1 sheet of drawings