DE815262C - Device for driving tape-shaped magnetic sound carriers - Google Patents
Device for driving tape-shaped magnetic sound carriersInfo
- Publication number
- DE815262C DE815262C DEP25545A DEP0025545A DE815262C DE 815262 C DE815262 C DE 815262C DE P25545 A DEP25545 A DE P25545A DE P0025545 A DEP0025545 A DE P0025545A DE 815262 C DE815262 C DE 815262C
- Authority
- DE
- Germany
- Prior art keywords
- speed
- guide roller
- shaped magnetic
- magnetic sound
- tape
- 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
- G11B15/26—Driving record carriers by members acting directly or indirectly thereon
- G11B15/28—Driving record carriers by members acting directly or indirectly thereon through rollers driving by frictional contact with the record carrier, e.g. capstan; Multiple arrangements of capstans or drums coupled to means for controlling the speed of the drive; Multiple capstan systems alternately engageable with record carrier to provide reversal
-
- 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
- G11B15/46—Controlling, regulating, or indicating speed
Landscapes
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Description
Die Erfindung bezieht sich auf eine Einrichtung zum Antrieb bandförmiger Magnettonträger.The invention relates to a device for driving belt-shaped Magnetic sound carrier.
Im Verhältnis zu dem Antrieb für drahtförmige Träger, bei denen durch Länge und Art der Aufwickeltrommeln, mehrere Drahtlagen nebeneinander, die Durchmesserzunahme des Wickels keine beträchtliche Größe hat, ist der Antrieb für handförmige Magnettonträger schwieriger zu verwirklichen, da beim Aufspulen des Bandes der Durchmesser des Wickels ständig, bei langen Bändern also erheblich wächst, was bei gleichbleibender Geschwindigkeit der Antriebswelle eine ständige Zunahme der Bandgeschwindigkeit bedeuten würde.In relation to the drive for wire-shaped carriers, in which by Length and type of winding drums, several layers of wire next to each other, the increase in diameter of the roll is not of considerable size, it is the drive for hand-shaped magnetic sound carriers more difficult to achieve because the diameter of the roll when winding the tape constantly, which means that it grows considerably with long belts, which at constant speed the drive shaft would mean a constant increase in the belt speed.
Es ist bekannt, diese Schwierigkeiten durch Anwendungen mehrerer Motoren oder durch Verwendung von Reibungskupplungen zu überwinden. Solche Einrichtungen sind teuer.It is known to address these difficulties through multiple engine applications or overcome by using friction clutches. Such facilities are expensive.
Die Erfindung vermeidet nun trotz Anwendung nur eines Motors mit einfachen Mitteln die nachteiligen Folgen der Durchmesserzunahme des Wickels dadurch, daß die Bandgeschwindigkeit von einer Leitrolle konstant gehalten wird, die mit einem Regulator verbunden ist, welcher die Bandgeschwindigkeit nicht über einen festgesetzten Wert ansteigen läßt, und ein einziger, mit der Aufwickelspule starr gekuppelter Motor verwendet wird, dessen Drehzahl von der Belastung bzw. von der Drehzahl der Leitrolle abhängt. Leitrollen mit gleichbleibender Drehzahl für diese Zwecke sind bekannt, doch wurde die Drehzahl bisher durch einen besonderen Synchronmotor für die Leitrolle konstant gehalten.The invention now avoids despite the use of only one motor with simple Means the adverse consequences of the increase in diameter of the roll in that the belt speed is kept constant by a guide roller, which with a Regulator is connected, which the belt speed does not have a fixed Can increase value, and a single, rigidly coupled to the take-up reel Motor is used, the speed of which depends on the load or the speed of the Guide roller depends. Idler pulleys with constant speed for these purposes are known, but the speed was previously due to a special synchronous motor for the idler pulley kept constant.
Da die Bandgeschwindigkeit von der Leitrolle gesteuert wird, kann der Motor, der an und für sich das Bestreben hat, die Umfangsgeschwindigkeit der Spule mit zunehmendem Durchmesser zu steigern, sich immer nur so schnell drehen, als es das aufzuspulende Band zuläßt, da beispielsweise die Bremsung des Bandes durch die Leitrolle und damit die Belastung des Motors zunimmt, also seine Drehzahl sinkt. Unter Umständen kann der Regulator aber auch unmittelbar die Drehzahl des Motors steuern.Since the belt speed is controlled by the guide roller, can the motor, which in and of itself strives to reduce the peripheral speed of the To increase the coil with increasing diameter, only turn so fast, than the tape to be wound up allows, for example the braking of the tape due to the idler pulley and thus the load on the motor increases, i.e. its speed sinks. Under certain circumstances, however, the regulator can also directly adjust the speed of the Control the engine.
Beim Rückspulen wird der Antriebsmotor mit der andern Trommel, welche bisher abgewickelt wurde, gekuppelt unter gleichzeitiger Zwischenschaltung eines Getriebes, welches die Drehzahl zum Aufspulen heraufsetzt.When rewinding the drive motor with the other drum, which so far has been handled, coupled with the simultaneous interposition of a Gear, which increases the speed for winding.
Die bremsende Wirkung des Regulators wird beim Rückspulen durch Anwendung eines Freilaufes unwirksam gemacht; gegebenenfalls kann das Band auch beim Rückspulen so geführt werden, daß es nicht über die Leitrolle, welche mit dem Regulator verbunden ist, läuft.The braking effect of the regulator is applied when rewinding a freewheel made ineffective; if necessary, the tape can also be rewound be guided in such a way that it does not have the guide pulley, which is connected to the regulator is running.
Die Zeichnung zeigt beispielsweise schematisch eine Ausführungsform der Erfindung, und zwar in Fig. i im Aufblick und in Fig. 2 im Querschnitt.The drawing shows, for example, schematically an embodiment of the invention, namely in Fig. 1 in plan view and in Fig. 2 in cross section.
In dieser Zeichnung ist i die Aufwickeltrommel, 2 die mit dem Regulator verbundene Leitrolle und 3 die Abwickeltrommel, 4 der Antriebsmotor und 5 der als Fliehkraftregler mit veränderlicher Bremsung ausgeführte Regulator, 6 sind die Sprech-bzw. Hörköpfe.In this drawing i is the take-up drum, 2 the one with the regulator connected guide roller and 3 the unwinding drum, 4 the drive motor and 5 as Centrifugal governor with variable braking executed regulator, 6 are the speech or. Hearing heads.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP25545A DE815262C (en) | 1948-12-19 | 1948-12-19 | Device for driving tape-shaped magnetic sound carriers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP25545A DE815262C (en) | 1948-12-19 | 1948-12-19 | Device for driving tape-shaped magnetic sound carriers |
Publications (1)
Publication Number | Publication Date |
---|---|
DE815262C true DE815262C (en) | 1951-10-01 |
Family
ID=7370133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP25545A Expired DE815262C (en) | 1948-12-19 | 1948-12-19 | Device for driving tape-shaped magnetic sound carriers |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE815262C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE970710C (en) * | 1951-10-28 | 1958-10-16 | Protona Produktionsgesellschaf | Small magnetic recorder for sound recording and playback |
DE974466C (en) * | 1952-03-22 | 1961-01-05 | Hessischer Rundfunk Anstalt De | Device for winding magnetic sound tapes guided over a pulley onto flangeless reel cores |
-
1948
- 1948-12-19 DE DEP25545A patent/DE815262C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE970710C (en) * | 1951-10-28 | 1958-10-16 | Protona Produktionsgesellschaf | Small magnetic recorder for sound recording and playback |
DE974466C (en) * | 1952-03-22 | 1961-01-05 | Hessischer Rundfunk Anstalt De | Device for winding magnetic sound tapes guided over a pulley onto flangeless reel cores |
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