GB697165A - Improvements relating to magnetic sound recording and reproducing apparatus - Google Patents

Improvements relating to magnetic sound recording and reproducing apparatus

Info

Publication number
GB697165A
GB697165A GB2265449A GB2265449A GB697165A GB 697165 A GB697165 A GB 697165A GB 2265449 A GB2265449 A GB 2265449A GB 2265449 A GB2265449 A GB 2265449A GB 697165 A GB697165 A GB 697165A
Authority
GB
United Kingdom
Prior art keywords
sound recording
reproducing apparatus
magnetic sound
improvements relating
magnetic
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
GB2265449A
Inventor
Henry Milburn Harrison
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB2265449A priority Critical patent/GB697165A/en
Publication of GB697165A publication Critical patent/GB697165A/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
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/12—Raising and lowering; Back-spacing or forward-spacing along track; Returning to starting position otherwise than during transducing operation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
    • G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
    • G11B25/043—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card using rotating discs

Landscapes

  • Moving Of Heads (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

697,165. Magnetic sound recording and reproducing apparatus. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Sept. 1, 1950 [Sept. 1, 1949], No. 22654/49. Class 40 (ii). In magnetic sound recording and reproducing apparatus using a record 3 formed of a paper disc with a magnetic coating, and with a disc 42 bearing a spiral track for guiding the transducer, which is mounted on an arm 4, an adjustable abutment is provided to determine the starting position of the transducer. The abutment 5 may be formed by the end of a screw 9 working in a support 8 under the control of lever 10. The adjustment may be interconnected with the switch which connects the apparatus for recording or reproducing. The apparatus may be of the kind described in Specification 697,161. Specification 649,260 also is referred to in the Provisional Specification.
GB2265449A 1949-09-01 1949-09-01 Improvements relating to magnetic sound recording and reproducing apparatus Expired GB697165A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2265449A GB697165A (en) 1949-09-01 1949-09-01 Improvements relating to magnetic sound recording and reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2265449A GB697165A (en) 1949-09-01 1949-09-01 Improvements relating to magnetic sound recording and reproducing apparatus

Publications (1)

Publication Number Publication Date
GB697165A true GB697165A (en) 1953-09-16

Family

ID=10182933

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2265449A Expired GB697165A (en) 1949-09-01 1949-09-01 Improvements relating to magnetic sound recording and reproducing apparatus

Country Status (1)

Country Link
GB (1) GB697165A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0107853A2 (en) * 1982-10-29 1984-05-09 Kabushiki Kaisha Toshiba Magnetic disk drive apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0107853A2 (en) * 1982-10-29 1984-05-09 Kabushiki Kaisha Toshiba Magnetic disk drive apparatus
EP0107853A3 (en) * 1982-10-29 1985-05-15 Kabushiki Kaisha Toshiba Magnetic disk drive apparatus

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