DE655017C - Device for the automatic shutdown of the drive of sound recording devices with tape-shaped recording media - Google Patents
Device for the automatic shutdown of the drive of sound recording devices with tape-shaped recording mediaInfo
- Publication number
- DE655017C DE655017C DEA79912D DEA0079912D DE655017C DE 655017 C DE655017 C DE 655017C DE A79912 D DEA79912 D DE A79912D DE A0079912 D DEA0079912 D DE A0079912D DE 655017 C DE655017 C DE 655017C
- Authority
- DE
- Germany
- Prior art keywords
- tape
- drive
- sound recording
- automatic shutdown
- recording media
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/43—Control or regulation of mechanical tension of record carrier, e.g. tape tension
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Description
Bei Tonauizeichnungsgeräten wird der Tonträger bei der Wiedergabe durch ein Triebwerk von einer Vorratsspule am Sprech- und Hörkopf vorbei auf eine Spulenscheibe umgespult. Um nach der Aufnahme die bewirkte Aufzeichnung eines Gespräches abhören zu können, muß der Tonträger zunächst wieder zurückgespult werden. Diese Umspulung wird zweckmäßigerweise zur Zeitersparnis mit er-In the case of audio recording devices, the sound carrier is when playing through an engine from a supply reel on the speech and Ear head rewound on a reel disc. To after taking the effected To be able to listen to the recording of a conversation, the sound carrier must first be restored be rewound. This rewinding is expediently used to save time with
iQ höhter Geschwindigkeit durchgeführt.iQ performed at a higher speed.
Da nun bei der geringen Reißfestigkeit z. B. eines Magnetophonbandes, das aus Film oder Papier hergestellt ist, eine erhöhte Geschwindigkeit die Reißgefahr vergrößert, werden vielfach Ausschaltvorrichtungen angewendet, die sich beim Reißen des Bandes von selbst betätigen und das Laufwerk stillsetzen. Eine derartige Abschaltvorrichtung ist in der Zeichnung dargestellt.Since now at the low tear strength z. B. a magnetophone tape made of film or paper is made, an increased speed increases the risk of tearing Often used disconnection devices, which are when the tape tears operate it yourself and shut down the drive. Such a shutdown device is in the Drawing shown.
Das Magnetophonband 4 läuft kurz vor dem Einlauf in die beiden Spulenscheiben 1 und 2 durch je eine Gabel 5, 5, .die zweckmäßigerweise leicht drehbar gelagert ist, um dem zu- oder abnehmenden Durchmesser der Spulenscheiben leicht folgen zu können.The magnetophone tape 4 runs shortly before it enters the two reel disks 1 and 2 each by a fork 5, 5,. Which is conveniently easily rotatably mounted to to be able to easily follow the increasing or decreasing diameter of the reel discs.
Die beiden aus Hartbronze hergestellten Zungen 5 der Gabel sind voneinander elektrisch isoliert; der eine ist fest gelagert, der andere durch Eederspannung leicht gegen den ersteren angedrückt] bei· Berührung der beiden Gabelstifte wird ein elektrischer Stromkreis geschlossen. Bei Einführung des Magnetophonbandes, das bekanntlich nur einseitig mit einer Eisenpulverschicht versehen ist, in die Gabel, wird dieser Schluß aufgehoben. Diese Möglichkeit wird ,dazu benutzt, um den Stromkreis eines Relais 6 zu öffnen und damit das Triebwerk in Betrieb zu setzen. Bei Bandbruch wird der Stromkreis des Relais geschlossen und damit das Triebwerk stillgesetzt und gegebenenfalls eine Signalvorrichtung eingeschaltet.The two tongues 5 of the fork made of hard bronze are electrical from one another isolated; one is firmly supported, the other slightly against the Eeder tension the former pressed] when the two touch Fork pins complete an electrical circuit. With the introduction of the magnetophone tape, which is known to be provided with an iron powder layer on only one side into which Fork, this conclusion is canceled. This possibility is used to control the circuit of a relay 6 to open and thus the To put the engine into operation. If the strap breaks the circuit of the relay is closed and the engine is shut down and, if necessary, a signaling device switched on.
Nun hat .eine solche im wesentlichen bekannte Ausschaltvorrichtung den Mangel, daß der Tonträger durch das Hindurchlaufen zwisehen den Gabelzungen 5 beschädigt werden oder an ihnen haftenbleiben kann, wodurch ein Reißen begünstigt wird. Diese Gefahr wird durch die Anordnung nach der Erfindung weitgehend vermindert.Now one of these is essentially known Switching off the defect that the sound carrier zwisehen by passing through the fork tongues 5 can be damaged or stick to them, whereby tearing is favored. This risk is eliminated by the arrangement according to the invention largely reduced.
Gemäß der Erfindung wird die Anordnung so getroffen, daß die bewegliche Zunge der Kontaktgabel bei der Inbetriebsetzung des Laufwerks durch das gespannte Tonband selbsttätig von der festen Zunge abgehoben wird, so daß der bandförmige Tonträger nur an der beweglichen, leicht federnden Kontaktzunge vorbeistreift. Dadurch wird verhindert, daß das Tonband bei hohen Bandgeschwindigkeiten und beim Durchlauf von Bandklebestellen ,durch den Schleifkontakt reißt.According to the invention, the arrangement is made so that the movable tongue of the When the drive is started up, the contact fork is automatically lifted from the fixed tongue by the tensioned tape is, so that the tape-shaped sound carrier only on the movable, slightly resilient Contact tongue brushes past. This prevents the tape from running at high tape speeds and when passing tape splices through the sliding contact rips.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA79912D DE655017C (en) | Device for the automatic shutdown of the drive of sound recording devices with tape-shaped recording media |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA79912D DE655017C (en) | Device for the automatic shutdown of the drive of sound recording devices with tape-shaped recording media |
Publications (1)
Publication Number | Publication Date |
---|---|
DE655017C true DE655017C (en) | 1938-01-06 |
Family
ID=6947863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA79912D Expired DE655017C (en) | Device for the automatic shutdown of the drive of sound recording devices with tape-shaped recording media |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE655017C (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2519245A (en) * | 1944-10-20 | 1950-08-15 | Armour Res Found | Magnetic recording apparatus |
DE863715C (en) * | 1949-08-04 | 1953-01-19 | Schaub Appbau Ges M B H G | Device for stopping magnetic sound devices |
US2692472A (en) * | 1949-08-12 | 1954-10-26 | American Viscose Corp | Strand machine stopping device and method |
DE923939C (en) * | 1949-03-17 | 1955-02-24 | Schaub Appbau Ges M B H G | Magnetic sound device with a tape or wire-shaped carrier and a device for stopping the carrier drive |
DE938936C (en) * | 1951-02-03 | 1956-02-09 | Prod Perfectone S A | Device for automatic and manual application of the pressure roller and the respective sound heads of magnetic sound devices |
DE1096630B (en) * | 1956-10-31 | 1961-01-05 | Steidinger Geb | Actuation device for sound recording and playback device |
-
0
- DE DEA79912D patent/DE655017C/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2519245A (en) * | 1944-10-20 | 1950-08-15 | Armour Res Found | Magnetic recording apparatus |
DE923939C (en) * | 1949-03-17 | 1955-02-24 | Schaub Appbau Ges M B H G | Magnetic sound device with a tape or wire-shaped carrier and a device for stopping the carrier drive |
DE863715C (en) * | 1949-08-04 | 1953-01-19 | Schaub Appbau Ges M B H G | Device for stopping magnetic sound devices |
US2692472A (en) * | 1949-08-12 | 1954-10-26 | American Viscose Corp | Strand machine stopping device and method |
DE938936C (en) * | 1951-02-03 | 1956-02-09 | Prod Perfectone S A | Device for automatic and manual application of the pressure roller and the respective sound heads of magnetic sound devices |
DE1096630B (en) * | 1956-10-31 | 1961-01-05 | Steidinger Geb | Actuation device for sound recording and playback device |
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