DE1025262B - Switching device for controlling operations in cinema projection systems - Google Patents

Description

GERMAN

The invention relates to a switching device for controlling operations in cinema projection systems, z. B. to close and open the proscenium curtains, to illuminate the proscenium and / or the auditorium, with a shift drum that controls these processes.

The switching device according to the invention is used to reduce and reduce the number of handles, which are required for controlling a program demonstration, and at the same time enables the Compliance with greater accuracy with regard to the timing of the same.

This is achieved in that the shift drum with several extending in the circumferential direction Fastening devices is provided in which switching means which control the operation can be used are that the number and type of processes to be controlled, their chronological sequence and the the timing of each individual process can be set as desired.

An exemplary embodiment of the subject matter of the invention is shown on the basis of the drawing.

Fig. 1 is a schematic front view of a drum control device;

Fig. 2 is a schematic partial side view of the same and

3 shows a circuit diagram of electrical aids for actuating the control drum.

1 and 2 show a control drum 1 which is driven in the manner described below. This drum consists of a series of ring-shaped structures on which removable or all-round actuating devices can be applied. For example, as shown in the drawing, the drum has peripheral series 2 α, 2 b ... 2 m of holes or depressions or bores separated from one another in the axial direction, in order to use actuating means at a certain point depending on the choice, such as gap clips 3 fixed on the periphery of the drum by inserting them into the aforementioned holes so that their protruding heads are used to open and / or close contacts 4 of electrical switches 5 associated with working devices such as electric motors , electromagnetic relays, thyratrons or other thermionic devices or equivalent elements.

The drum can have a plurality of parallel disks or the like, which are normally on a common shaft are arranged and each of which, for example, one on its circumference Series of notches in the form of sawtooth-shaped recesses that are suitable for

Switching device for control

of surgical procedures

in cinema projection systems

Applicant:

Essoldo Circuit (Control) Limited,
Newcastle-on-Tyne (Great Britain)

Representative: Dr. O. Faust, patent attorney,
Göttingen, Am Goldgraben 26

Claimed priority:
Great Britain 26 January 1951

Thomas Robinson, Reading, Berkshire,

and William James Foy,

Enfield, Middlesex (UK),

have been named as inventors

the optional local attachment of saddle-shaped Contact actuation means.

The number and arrangement of drive actuators or brackets on the panes can allow any number and type of operations to be performed in a cinema show. For example, as shown in the drawing, each series of rings has 50 holes. In the embodiment shown, the drum shaft 6 can be driven by a ratchet wheel 7 attached to it, a pawl 8 with the aid of a solenoid DP for actuation of the pawl by electrical impulses that are applied to the solenoid at certain toes , the pawl by suitable resilient means is held in position, for example by springs 9 and 10.

To facilitate the placement of the contact means on the correct hole one of the mentioned Ring series, a ring with hole numbers 1 to 50 is fixed on axis 6.

The contacts 4 consist of leaf spring contacts which are arranged tangentially to the drum and which are correspondingly arranged arms 12 are operated, which in a number of pairs or groups in front of the

709 907/243

Claims (6)

Drum are arranged and under the action The circuits can be manually put into such a the contact-actuating brackets 3 are put into an electrical state or, if desired, also see current close upon intervention. Such contacts are automatic by means of means in the film directly or by suitable electromagnetic projection apparatus, which at least on a Markie-aid in the circuit of the device, how electrification respond on the film. After turning the shear motors or starters of electric motors drum 1 engages an actuator or (e.g. for gramophones in progress, film - a plurality of actuating devices 3 of the Projectors or proscenium curtains), drum 1 can be inserted into the associated contacts, so that and also a motor running for the actuation of sound amplification with electromagnetic means devices or lighting systems or io is brought to the proscenium curtains over the other apparatus including an arc screen to be drawn, or it may be by suitable Projection apparatus can be used. Nice agents such as thermionic or thyratronic devices Pawl 8 can in due course the lines, the proscenium light and / or the light in Latch the drum one step forward, the auditorium switched on. by means of any suitable devices, to 15 Another actuating element on the control, which will be referred to later, and more expedient device can operate sound amplification apparatus, the drum can be switched off from the switching drive and the disconnection of the connection with sound at any desired time, so that recording devices in one Film projection apparatus and it is rotatable by hand, e.g. B. cause back to the on on a sound recording machine. After a catch position. For this purpose, a different actuation-specified embodiment can be used in the predetermined time, a pressure lever 13 to bring the direction of the control device, which has been triggered by the pawl 8 out of engagement with the ratchet wheel 7 with the help of an arm 14 that has just been completed , which is below that, a signal for the presenter to operate the on-armature plate 15 of the relay DP attacks, as well as a hand-knurled rotatable disc 16 running a film projection apparatus, which is attached to the drum 25 for short films, or also a series of electrical devices and the reversal of the same manually Irish pulses by the control device and facilitated. . Drum are transferred to devices, Fig. 3 shows a circuit diagram of electrical the automatic starting of the film showing with auxiliary means for actuating the control drum. act, at the same time the sound amplification pre-The solenoid DP 30 direction indicated schematically in Fig. 1 in connection with the projection recording is on the one hand grounded via a capacitance Cl and the device is switched. In connection with this, on the other hand, with the anode of an amplifier Vl and other actuating elements on the control can be used to connect the proscenium supply Rl to a high-voltage source through the resistance device. hang to open again, the proscenium to evaporate. One of the contacts of CT2 is z. B. grounded, 35 none and the lighting in the auditorium while the other to control the grid of the switch. Amplifier Vl by a resistor R 3 other previously arranged operations, which are similar and capacitor C 2 existing element connected to those previously described, can be carried out. The grid bias is provided for the aforementioned, for example during an act performed by a thyratron tube through a resistor R 2 living artists or musicians. On the other hand, the control device da-contacts CTl, which are shown schematically in parallel to serve, color-changing devices for the ProKontakten CT 2 in FIG a demonstration or at the end of a pre-determined work cycle in operation 45 part of the program will be starting work for a FiImzu or reliably with the contacts 4 in the projector, opening the proscenium curtains and deletion intervention, which can be repeated by rotating the light and the continuous tion of the drum 1 come into working position. Film showing reversed, and the con-It goes without saying that one can finally switch off with electric, drum-driven circuits 50 and / or bring oneself back to the starting position to carry out numerous sequences of operations. A control device can be implemented. Next, the drum can be switched by suitable means to put the drum back in the initial position tools in action, for example, by the control is so set up, by hand or automatically, z. B. by terminating that in any position in which it does not work, one or more operations, which 55 the contacts CT1 in Fig. 2 are closed. It can take place during the performance, for example by an actuating element that the running out of a film or the termination of the drum can be switched on independently to play a gramophone record. Furthermore, the can, so that the drum drives itself forward until the end of an optional work cycle, the last position. The bore 50 was triggered by the drum, any 60 before the initial position is left empty, so that the various work processes are initiated, for example the control device or drum does not automatically start up a film projection apparatus and / and only when it receives a or the initiation of a process of an automatic impulse from a film projector, i.e. when the table control is operated to switch from one program to another, the control device needs to work again, etc. 65, to return to the initial position. Shortly before the end of a series of film events,
The circuits are set up in such a way that the impulse or the impulses or one of the impulses claims: from the outgoing projection apparatus to 1. Switching device for controlling operations serve to operate the relay DP. 70 ti ons processes in cinema projection systems, e. B. to Closing and opening the proscenium curtains to illuminate the proscenium and / or the Auditorium, with a shift drum controlling these processes, characterized in that that the shift drum with a plurality of fastening devices extending in the circumferential direction is provided in which switching means which control the operation can be used so that the Number and type of processes to be controlled, their chronological order and the timing can be set as required for each individual process. 2. Device according to claim 1, characterized in that on the drum (1) peripheral hole circles ( 2a to 2 ») or the like. With bores (z. B. 1 to 50) for the circuit actuating devices (3) are arranged that are used to switch on electromagnetic relays or thyratron tubes or motors, etc. and can be attached at the desired location as required. 3. Device according to claim 1, characterized in that the longitudinal rows of the circuit-actuating devices (3 ) comprise a localized row of circuit-actuating devices (2a) by means of which the displaceability of the control member or the drum (1) is limited. 4. Apparatus according to claim 3, characterized by a manually operated device to return the controller to the starting position. 5. Apparatus according to claim 1 to 4, characterized in that the controller consists of a cylinder or a drum (1) attached to an axis (6), on the outer surface of which said peripheral rows (2 a to 2 m) with the local Fixing the switch actuating devices (3) serving holes (2) are arranged, the mentioned transverse rows of circuit actuating devices are distributed parallel to the cylinder axis and sliding contacts (12) of the switch (4) are tangential to the cylinder and the stepwise rotation of the cylinder (1) by the electromagnetic device (DP) with armature (15) takes place by means of a ratchet wheel (7) attached to the rotating shaft (6), a locking hook (8) connected to the armature engaging in the ratchet wheel (7). 6. Apparatus according to claim 5, characterized by a combination of the mentioned fitting (15) with manually operated levers (13, 14) that release the locking hook (8) from the ratchet wheel (7) by hand. Considered publications:
German Patent Nos. 545 658, 333 555;
U.S. Patent No. 1,972,904. 1 sheet of drawings