DEP0046908DA - Device for one-sided erasing of double-sided magnetographic records - Google Patents

Device for one-sided erasing of double-sided magnetographic records

Info

Publication number
DEP0046908DA
DEP0046908DA DEP0046908DA DE P0046908D A DEP0046908D A DE P0046908DA DE P0046908D A DEP0046908D A DE P0046908DA
Authority
DE
Germany
Prior art keywords
sided
double
erasing
sound
magnetographic
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
Other languages
German (de)
Inventor
Karl Dr. Memmingen Kesselschläger
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.)
Individual
Original Assignee
Individual
Publication date

Links

Description

Zum einseitigen Löschen mehrerer, nebeneinander liegender oder aller Tonbahnen einer doppelseitig bespielten Magnettonschallplatte wird ein Elektromagnet vorgeschlagen, der mit Wechselstrom gespeist wird, und dessen Pole sich in bekannter Weise durch einen Spalt getrennt gegenüberstehen. Die Spaltlänge des Elektromagneten überdeckt jedoch nicht nur eine Tonbahn, sondern sie ist gleich der Breite mehrerer nebeneinander liegender oder aller Tonbahnen der Schallplatte.For one-sided erasure of several adjacent or all sound tracks of a double-sided recorded magnetic sound record, an electromagnet is proposed which is fed with alternating current and whose poles face each other in a known manner separated by a gap. However, the gap length of the electromagnet not only covers one sound track, but it is equal to the width of several adjacent or all sound tracks on the record.

Die richtige Stellung des Spaltes auf bzw. über der Schallplatte kann durch gleitflächenförmige Ausbildung der Polschuhe erreicht werden, bzw. erleichtert werden. Ferner kann dies durch Zusammenbau des Elektromagneten mit Gleitflächen erreicht werden.The correct position of the gap on or above the record can be achieved or facilitated by the design of the pole shoes in the form of sliding surfaces. Furthermore, this can be achieved by assembling the electromagnet with sliding surfaces.

Claims (2)

1.) Doppelpoliger elektromagnetischer Löschkopf zum einseitigen Löschen einer doppelseitig bespielten Magnettonschallplatte auf mehreren nebeneinander liegenden oder allen Tonbahnen gleichzeitig, dadurch gekennzeichnet, dass die Spaltlänge der Polschuhe des Elektromagneten gleich der Breite mehrerer oder aller Tonbahnen des Schallträgers ist.1.) Double-pole electromagnetic erasing head for one-sided erasing of a double-sided recorded magnetic sound record on several adjacent or all sound tracks at the same time, characterized in that the gap length of the pole pieces of the electromagnet is equal to the width of several or all sound tracks of the sound carrier. 2.) Löschmagnet nach Anspruch 1, dadurch gekennzeichnet, dass das gleichzeitige Anliegen beider Magnetpole des Magnetspaltes auf dem Schallträger durch Ausbildung der Magnetpole als Gleitflächen erfolgt.2.) Extinguishing magnet according to claim 1, characterized in that the simultaneous application of both magnetic poles of the magnetic gap on the sound carrier takes place by forming the magnetic poles as sliding surfaces.

Family

ID=

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