DE1052129B - Guide organ for tape-shaped magnetic sound carriers - Google Patents

Description

GERMAN

kl.42 g ιυ / υι

INTERNAT. KL. G IOj

PATENT OFFICE / ¥ σ 3 / {

17 / U

N 11441 VIIId / 42g

REGISTRATION DATE: November 12, 1955

NOTICE THE REGISTRATION AND ISSUE OF THE FROM LE GE SCRIPTURE:

March 5, 1959

The invention relates to a guide member for tape-shaped magnetic sound carriers and is characterized in that that the guide member has at least two guide surfaces for different magnetic sound carriers Contains width, the narrower guide surface within a recess of the wider guide surface and from each guide surface the pole ends and the gap at least one in the guide member protrude from the magnetic head. This has the advantage that the guide member for magnetic tape different width can be used. So it takes a transition to a different bandwidth not to be exchanged. This is particularly important in today's development of sound film technology.

In addition, the invention is not limited to use in sound film technology.

It can also be applied to calculating machines, with the guidelines for the various mathematical Operations for the final solution of a certain task on a number of band-shaped Magnetic sound carriers with different widths recorded and then carried out automatically at any moment are. If several tasks of the same kind are to be solved, these are the guidelines for the solution all of these tasks are initially the same. Only in the final phase of solving each task will there be deviations of the guidelines occur, so that one moves to another magnetic sound carrier.

In addition, the invention can be used in factories where a variety of similar products are on running gang. The various machines and tools become completely automatic operated by means of some magnetic sound carriers of different widths, on which the for each machine and each tool is recorded according to certain regulations.

The development of the film industry in recent years has resulted in particularly true-to-life reproduction of sound and image. This is achieved on the one hand by one with the projected image sweeps a larger angle of view, which leads to systems such. B. "Cinemaskop" and "Cinerama" led. on the other hand the sound reproduction has been adapted to the enlarged dimensions of the projection screen, by projecting the image on such a wide screen with a spatially oriented sound reproduction is combined. However, there may be circumstances in which it is desirable, in addition to the multi-track systems mentioned also project normal film or cine film provided with a single soundtrack can.

In order to have these possibilities available in a single film projector, it is advantageous to Guide organ for tape-shaped magnetic sound carriers

Applicant: Ν. V. Philips' Gloeilampenfabrieken, Eindhoven (Netherlands)

Representative: Dr. rer. nat. P. Roßbach, patent attorney, Hamburg 1, Mönckebergstr. 7th

Claimed priority: The Netherlands, October 1 and October 3, 1955

Johan Paul Heinrich Hallmarm ₁

Eindhoven (Netherlands) has been named as the inventor

to use therein a management organ of the aforementioned type, wherein, according to a further embodiment of the invention, the dimension of the guide surfaces in the direction of the width of the sound recording bearing Tape is chosen so that the management organ of sound films from normal film, wide-film and also Cine format can be guided.

Although, in principle, each guide surface only needs to be provided with a magnetic head, is at Application of the new management body in the sound film technology with regard to the possibility of a ordinary or stereophonic sound reproduction according to a development according to the invention each of the guide surfaces on each side edge with at least one magnetic head, in practice even with two or more heads. This makes it possible to use the same guide organ to make sound films with two or more sound recording tracks on either side of the image strip, depending on the Can have different formats if desired. However, each can also only be on one side of the page Guide surface two or more magnetic sound heads can be attached.

According to a further embodiment of the invention, it is advantageous to use the electrical terminals to connect each magnetic head with a common connecting element, which is on the lower side of the guide organ is attached. This makes it possible to design the guide element as a plug, which by means of a few guide pins in a

809 768/258

Claims (4)

Gen plug of the feed part can be introduced, so that easy interchangeability is achieved. The invention is explained in more detail with reference to an embodiment shown in the drawing, namely FIG. 1 shows a plan view of the guide member, FIG. 2 shows a longitudinal section and FIG. 3 shows a cross section. In the figures, 1 denotes a block made of insulating material, which is surrounded by a magnetically conductive wall 2 for magnetic shielding. The structure can be attached to a sound film projector by means of a flange 3. On the upper side of the block 1 there is the guide surface 4 for a wide format picture sound film, e.g. B. of 70 mm. The guide surface 4 has a recess in which the guide surface 5 for films of normal format, e.g. B. of 35 mm, while within this recess a space 6 is available for an optionally desired third guide surface over which a sound film of narrower format can be guided. In block 1, some magnetic sound heads are attached, the pole ends of which protrude with the gaps 7 over the various guide surfaces. The electrical connection terminals of each magnetic sound head are connected to a common connection element 8 which is attached to the lower side of the guide element. Claims-. 1. Guide organ for tape-shaped magnetic sound carriers, in particular for sound film projectors, characterized in that the guide member contains at least two guide surfaces (4, 5) for magnetic sound carriers of different widths, the narrower guide surface (5 ) lying within a recess of the wider guide surface (4) and the pole ends and the gap (7) at least from each guide surface a magnetic sound head housed in the guide organ protrude. 2. Guide member according to claim 1, characterized in that the dimension of the guide surfaces (4, 5) in the direction of the width of the tape carrying the sound recording is chosen such that sound films from normal film and possibly also narrow film format can be guided over the guide member. 3. Guide member according to claim 2, characterized in that each of the guide surfaces (4, 5) is provided on each side edge with at least one magnetic sound head. 4. Guide element according to claim 3, characterized in that the electrical connection terminals of each magnetic sound head are combined in a common connection element (8) which is attached to the lower side of the guide element. Considered publications:
German Patent No. 890 306;
British Patent No. 693,346. 1 sheet of drawings © 809 768/258 2.59