DE1887579U - tape - Google Patents

Description

B e s. Ehrei bu η g. "■"., ^:

to the G-eloraucl pattern. - - ■

the E.rma Meohanisolie- & Teciinische. Apparatezifabriek ^ Metaf ", Abcoude (Netherlands),

concerning - - .. ■

"To η b a η d". .

The hiring refers to a tape for use at a device for synchronizing a film projector with a magnetic recorder, at vielcher for the film drive Control circuit is used with two periodically operating switches, one of which by means of a sprocket through the Jilmlochungen and the other by means of a second Sprocket by special, only for synchronization purposes provided perforations of the tape is actuated, wherein These two switches open the control circuit for a period of time during calibration or keep it closed and do the same with a Alternately open and increase the miming speed close so that the film drive brakes and thereby der.-synchronism is restored, and the sprockets are replaceable *. _.

, nsorV is the most recently submitted; sis .ν / ■; ν; - ^

At a. Device. of the mentioned: kind can: man: .zwar .gine ^. '- .. achieve perfect synchronization ?. so; long, the film '; and the tape still the original composition. On white- . _: . sen _f However, certain difficulties arise if, due to damage, or for monday purposes, .wls.s; e-parts, are removed from .dem. ^; . ^r _:. Cut out the film and want to shorten it - including the tape accordingly * First of all, it is. -Difficult to find the right _;: -.;. _: To find places: where the: tape is cut; and, secondly, when these areas have been properly fixed, the holes in the two are glued together. Parts of the tape often do not connect properly to one another ^ so. That the synchronization is questioned! Another ..: - Disadvantage is ..that ^. it is not possible to add the: additional—. apparatus like that. to standardize that any combination of a film and a tape can be used with any additional equipment. before —..— can lead ·. -. "... ;;; ■ _:. "; ..

The! Inflation eliminates .this. Power rush in that the tape is provided with such a number of .Lochungen that the "per unit time passing through the tape recorder number · Lo © relationships in a simple ^ proportion to the number / of each unit of ^time: -. The ect lilmpro 3 in front of scrolling film frames there is *: ■ ■.. "..- ■■ -. ■ -. .

If. the :: tape -with.'normal. G-.speed is .played- _s ^: If this speed is .conventional / riveise either 9.5 5 or "." :.

19j 0 cm / sec * If the perforations of the tape are now, according to the innovation, with a mutual spacing, the perforation center lines. If the "I ¹ IIm is usually played back at a speed of 16 frames per second, the above-mentioned ratio results in a value for the above-mentioned ratio of 1: 4 or "1: 2. Even if you want to play the. film at a.. speed of 20 or" 24 frames per second, the simple. ratio provided for by the innovation is always present "

The tape, perforated according to the firing, also gives very good results. Considerable advantages when it comes to stream syncing movies as well as in the production of character and puppet films, because the related passages of film and. tape by counting the film images and the tape loops can be determined very easily. ■ /. ; . /. . - -: ■ .... -. . ;.

A particularly suitable one for the device mentioned. .; ; _ Tape is marked after a we lire r en! " by the fact that one of the. Edges: circular "'; -." "- shaped Perforations are provided at such distances from one another are that a whole number of holes per second - '

a tape recorder runs through, on which the .df; S tape is played back at normal (speed, whereby, according to the innovation, the distance between the center lines of the perforations is 23.75 mm »,. λ. ^:; :.. - . - -...- ".

The innovation is explained in more detail below using schematic drawings, for example. Λ. ":."^;

-Pig »1 the side view of a film projector with a Additional device for synchronization purposes is seen.,:

I * ig. 2 a circuit diagram of the synchronization circuit 5

B ¹ Ig. 3 is a plan view of a tape recorder, which is also equipped with an additional device for the. Synchronization is provided,

Fig * 4 shows a detail of the additional devices, and .... ! ig »5 a perforated tape according to the innovation * ■" ■.

In Fig. 1, the film is in a film projector 1; Z- is fed from the supply reel 3 over the picture window to an unwinding reel 4. The film, 2. is continuously fed from the reel 3:

unwound.-and "wound up on the sink 4., part 5 _, -__""- ^{: of} the projector, in which the image window is located, - the film is advanced step by step :. ,. ^; ; .; .-.--- ...

An auxiliary device is mounted on the projector, on the outside of which there are two guide rollers 7 and 8 and one between the chain wheel 9. ¹ are arranged by the; the Yorratspule off -. current kontinuierlieh '"bewegteUlm will roll over the guiding 7 and 8 and 9geführt over the sprocket, so that the latter by the Piim angetrieben.wird · .GeWunschtenfalls could be the auxiliary device 6 in the Hähe _~;. of the take-up reel 4 on the Assemble the projector.

The auxiliary device contains one on the axis of the sprocket 9 arranged cam disc 10 (Pig »2),. the. a. Switch 11 actuated »Continue to be. on. two push buttons on the auxiliary device 12 and 15 and a signal lamp 14 "are provided... '-. ..

As shown in the circuit diagram according to FIG. 2, the drive motor 15 of the projector has an adjustable switching resistor 16 and the switch 1.1 arranged in the auxiliary device 6. Connected in series to the AC mains -17. - There is a parallel to switch 11. second switch: T8 _} . which is actuated by a cam disk 19. The Seheibe.19 is with. coupled to the transport mechanism of the lonband.

* »D * rs

The Hoekensoliexben IG and 19 are / are trained in this way. Äass; ^ die- ■ - ".." switches 11 and 18 each during half of a turn; the -. : \ / subject ends -llocfeenscheifte ge.schloäs-.en ..: are. - Would: the -! "Oiled-. Discs A 0" and -A 9 run isochroa. And; there- those in 'the. Phase shift indicated in the drawing> of 180 °, so "- either the switch 11 or the switch * 18 would always be closed, so that the motor T5 would be continuously" switched on, ^; The film transport mechanism is running - ever a little too fast so that the iso "large. State, .does not:. Occur, feann. The motor current is circulated; / consequently during ^{1 of} a fraction. Of. Each. Revolution, the socks ^ Disk 19 is de-energized, so that the motor is braked so much that the desired synchronism is achieved -.; - ^-..: . - ..,

When film and tape run synchronously, but. have a phase * difference, so that.BiId ^ and. Not zusammenfallenj tone; "this phase difference can by the pressure knobs 12 and 13 correct this Druckknopfe_.betätigen per .a switch 20 or" 21 * When pressing the print knobs. & 12 is the - \ '-;. .., - The switch 20 is closed so that the holder 11 is short-circuited. The motor 15 is then continuously switched on, so that the film is driven at increased speed when the pushbutton 13 is pressed in the switch 21 is opened ^: so that the switch 18 is completely switched off » ^: the motor 15.";. is then only switched on for half the: time:,; so that; . the film speed is reduced # ■■■ "■" ■: -..-. .. -. ;

The signal lamp 14 is connected in series with a resistor 22 to the switch 11 in parallel. If the synchronism cannot be achieved because the hat or 15 is running too slowly, the lamp 14 remains stopped for a long period of time . _r that it lights up. By changing the setting of the gate switch resistance 16 you can then adjust the ffiotorgeschwihdigkeit; increase "so that" the synchronism comes about: *

The fig. » 3 shows the drive of the cam disk 19 '. There is an auxiliary device on the audio handheld device 23. 33 mounted, in which the cam 19 with. The switch · 18 is »A lock wheel ¹ 24 is mounted on the axis of the cam disk 19« The tape 34> ■ which is fed from the gate reel 25 over the magnet head to the take-up reel 27 and for ¹ synchronization szwecfea is perforated, runs over the sprocket 24 _F so that the cam disk.1 $ is driven «

It should be noted that the perforations of the lonband are not can be used to drive it, namely because the narrow sonbandi commonly used by amateurs for; such a drive is too weak, so that the perforations would soon be torn. "The drive" takes place rather in the usual way by means of a friction clutch, e.g. by the guide roller 32 is coupled to the drive motor ^ further drive means for the take-up reel 27 are provided «

- 8th

As can be seen from FIG. 2, the sprocket 10 sixteen and the sprocket has 19 animal teeth, "If the movie is played with a · speed of 16 frames per second and as usual has a Eochung per IIId, makes ^one sprocket 10 thus one rotation per second *. In order to drive the chain wheel 19 at the same speed, the tape must then be perforated so that four holes per second pass through the tape recorder. At the standardized playback speed of 9> 5 cm / sec the Ijochungeni of the tape to _{attach with a mutual distance of 23 r} 75 mm. If you want to play the same tape at the original speed of 19 em / sefe, which is intended for the highest sound quality, - you can replace the chain wheel 19 with a wheel with eight teeth. Use a film speed of 20 or .24 mlders pa? © second. by replacing the chain wheel 10 with a wheel with 20 or «24 teeth *, - -

The above numbers are of course only to be regarded as an example « The mutual distance of the tape perforations can also have a different value than the standardized Tape speeds in a simple ratio stands, e.g. the value of 11.875 mm, .-.

Bel the embodiment according to Figure "2, the block plate 10 and 19 formed in such a _t that the switch are closed depending during half a revolution of the" respective cam "The cam disks, however ,, könneni when the DER with regard to the dimensions and Terzahnungen Chain wheels, as well as the transport speeds and the spacing of the perforations in the film and the tape, must also be designed in such a way that the associated switches are opened and closed several times during one rotation.

The fig., 4 shows, for example, a cam disk 28 ,. which opens and closes the associated switch .29 twelve times per revolution. Furthermore, this figure shows a; Gate direction "with which small phase shifts between film ¹ and tape can be corrected. The Zontakte of the switch 29 are namely mounted on an insulating bridge 30, which can be rotated with the aid of an operating member 31 around the Aeh.se of the cam disk. This gate direction can be chosen at one of the switches. ' 11 and 18 provided -. will. In a preferred manner, the operating member 31 according to Pig. 3 designed as a ring surrounding the cam wheel 24. ". - ■.

10 -

Xn Fig. 5 shows a tape that has been punched according to cfer firing .. The. Tape 34 "which is covered in the usual way with a layer of magnetizable ferromagnetic material and is 6.35 mm wide, - is provided with circular perforations, the; have a diameter of 1.8 mm. and their centers are 2,, 1 mm from the edge of the tape. The distance between the center lines of consecutive * holes is 23.75 mm. If the tape is at the standardized speed of 9.5 or «. 19 cm / sefc is played, the tape recorder runs through four or eight holes per second »

man: · - ■
By making the chain wheels 10 and 19 interchangeable, the described tape can be used for any combination of the usual film and tape speeds without any further changes to the additional equipment *. . -

Protection claims:

- 1t -

Claims (4)

• A.724 526-11.11.63 SOHÜ.TZASSP R ft Ö .: IE: 1. Tape, for use in a ^ device- to syn. - -. chronize: a film projector with a magnetic fcton device, -bei which for the film drive a control circuit with uses two intermittent switches; will ,, from. ■ one by means of a sprocket through the FiInE holes and the other by means of a second sprocket with special ones provided for synchronization purposes only Loehungen the tape is operated, these two Switch continuously open the control circuit when running away or would have closed and the same with an excess: the film speed alternately open and close, so that the. Film drive brakes and thereby the synchronism: like that is manufactured, .and the sprockets are interchangeable are characterized "that the tape with a such number of holes is provided / that the per unit of time The number of perforations running through the tape recorder in a simple ratio to the number / the j-e time unit film frames passing through the film projector., 2 .. Device according to claim 1, characterized by a Perforation of the tape in such a way that a whole number of Eochungen per second the tape recorder "runs through, if, the tape is played at normal speed. . 12 - - 12 - 3. Apparatus according to claim $ γ, characterized in that the center lines of the perforations have a distance of 23.75 mm. 4. Tape for use in a device according to one of the preceding claims, characterized in that that near one of the edges circular holes are provided, which are at such distances from each other that a whole number of holes per second a tape recorder on which the tape is played at normal speed - 5 ^ tape according to claim / 4, characterized in that the distance between the center lines of the perforations is 23.75 mm * For mechanical and technical apparatus factories "Metaf": PATENT LAWYERS DR.-ING. H. FINCKE, DSPL-IKG. H. BOHB DIPL-INS. S. STAEGEÄ