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DE494545C - Talking machine drive - Google Patents

Talking machine drive

Info

Publication number
DE494545C
DE494545C DEF65765D DEF0065765D DE494545C DE 494545 C DE494545 C DE 494545C DE F65765 D DEF65765 D DE F65765D DE F0065765 D DEF0065765 D DE F0065765D DE 494545 C DE494545 C DE 494545C
Authority
DE
Germany
Prior art keywords
machine drive
motor
talking machine
drive
belt
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
Application number
DEF65765D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DR MAX LEVY GmbH
Original Assignee
DR MAX LEVY GmbH
Publication date
Priority to DEF65765D priority Critical patent/DE494545C/en
Application granted granted Critical
Publication of DE494545C publication Critical patent/DE494545C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof

Landscapes

  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Description

Sprechmaschinenantrieb Die Erfindung betrifft eine elektrische Antriebsvorrichtung für Sprechmaschinen mittels eines mit fast gleichbleibender Drehzahl umlaufenden Motors, beispielsweise eines Induktionsmotors, der die Tellerachse durch ein -endloses, elastisches Übertragungsglied antreibt. Da .die Drehzahl derartiger Induktionsmotore im wesentlichen von der Frequenz des Betriebswechselstromes und nur in geringem Maße von der Spannung und der Belastung abhängt, war eine Änderung der Umlaufgeschwindigkeit des Plattentellers in der bisher üblichen Art, z. B. durch mechanisches Abbremsen oder Vorschalten von Widerständen, in befriedigendem Maße nicht möglich. Um nun eine Einstellung der Plattentellerdrehzahl in bestimmten Grenzen zu ermöglichen, wird erfindungsgemäß eine auf anderen Gebieten der Technik bereits bekannte Einrichtung zur Geschwindigkeitsregelung in Anwendung gebracht. Der Elektromotor wird zu diesem Zwecke mit einer Stufenscheibe oder konischen Trommel versehen, auf der der Treib, riemen durch einen zweckmäßig mittels einer Schraube einstellbaren Riemenrücker verschoben werden kann.Talking machine drive The invention relates to an electrical drive device for speaking machines by means of a rotating with almost constant speed Motor, for example an induction motor, which drives the plate axis through an endless, elastic transmission member drives. Since .the speed of such induction motors essentially on the frequency of the operating alternating current and only to a small extent Measures depends on the tension and the load, was a change in the speed of rotation the turntable in the usual way, z. B. by mechanical braking or upstream resistors, not possible to a satisfactory extent. To now to enable the turntable speed to be set within certain limits, According to the invention, a device is already known in other fields of technology brought into use for speed control. The electric motor becomes this Purposes provided with a stepped disc or conical drum on which the drive, belt by means of a belt pusher that can be conveniently adjusted by means of a screw can be moved.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes dargestellt. Der Antriebselektromotor i ist so angebracht, daß sich seine Antriebswelle in vertikaler Lage befindet. Auf dieser Welle ist eine konische Scheibe 2 angebracht, über welche ein Gummiband 3 .gelegt ist, das zwischen zwei Backen q. geführt ist und den Plattenteller 5 antreibt. Die Schallplatte ist mit 6 bezeichnet. Die Führungsbacken q. können durch .Drehen einer Schraube 7 nach oben oder unten verstellt werden, und auf diese eise kann die Plattentellerdrehzahl in gewissen Grenzen sehr feinstufig eingestellt werden.The drawing shows an exemplary embodiment of the subject matter of the invention shown. The drive electric motor i is mounted so that its drive shaft is in a vertical position. A conical disk 2 is attached to this shaft, over which a rubber band 3. is laid, which q between two jaws. is led and the turntable 5 drives. The record is labeled 6. The guide jaws q. can be adjusted up or down by turning a screw 7, and in this way the turntable speed can be finely adjusted within certain limits can be set.

Claims (1)

PATENTANSPRUCH: Sprechmaschinenantrieb mittels eines mit fast gleichbleibender Drehzahl umlaufenden Motors, beispielsweise eines Induktionsmotors, und mit einem endlosen, elastischen LTbertragungsgliede zwischen Motor und Tellerachse, dadurch gekennzeichnet, daß der Elektromotor (i) mit einer zum Zwecke der Geschwindigkeitsregelung an sich bekannten Stufenscheibe oder konischen Trommel (2) versehen ist, auf der der Treibriemen (3) durch einen zweckmäßig mittels einer Schraube (7 einstellbaren Riemenrücker (d.) verschoben werden kann.PATENT CLAIM: Talking machine drive by means of an almost constant Speed rotating motor, for example an induction motor, and with a endless, elastic transmission links between motor and plate axis, thereby characterized in that the electric motor (i) with one for the purpose of speed control is provided per se known step disk or conical drum (2) on the the drive belt (3) by an expediently adjustable by means of a screw (7) Belt pusher (d.) Can be moved.
DEF65765D Talking machine drive Expired DE494545C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF65765D DE494545C (en) Talking machine drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF65765D DE494545C (en) Talking machine drive

Publications (1)

Publication Number Publication Date
DE494545C true DE494545C (en) 1930-03-24

Family

ID=7110273

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF65765D Expired DE494545C (en) Talking machine drive

Country Status (1)

Country Link
DE (1) DE494545C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780466A (en) * 1950-08-18 1957-02-05 Noma Lites Inc Phonograph tone arm restoring mechanism
US3445117A (en) * 1967-08-07 1969-05-20 Henry V Zakrzewski Phonograph drive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780466A (en) * 1950-08-18 1957-02-05 Noma Lites Inc Phonograph tone arm restoring mechanism
US3445117A (en) * 1967-08-07 1969-05-20 Henry V Zakrzewski Phonograph drive

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