GB702662A - Improvements in or relating to magnetic sound recording or reproducing apparatus - Google Patents

Improvements in or relating to magnetic sound recording or reproducing apparatus

Info

Publication number
GB702662A
GB702662A GB2351649A GB2351649A GB702662A GB 702662 A GB702662 A GB 702662A GB 2351649 A GB2351649 A GB 2351649A GB 2351649 A GB2351649 A GB 2351649A GB 702662 A GB702662 A GB 702662A
Authority
GB
United Kingdom
Prior art keywords
reproducing apparatus
sound recording
record
relating
magnetic sound
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
GB2351649A
Inventor
Gilbert Faraday Dutton
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 GB2351649A priority Critical patent/GB702662A/en
Priority to DEE2022A priority patent/DE832073C/en
Priority to FR1024341D priority patent/FR1024341A/en
Publication of GB702662A publication Critical patent/GB702662A/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
    • G11B17/32—Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing
    • 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
    • G11B21/16—Supporting the heads; Supporting the sockets for plug-in heads
    • 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

Abstract

702,662. Magnetic sound recording and reproducing apparatus. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Aug. 22, 1950 [Sept. 12, 1949], No. 23516/49. 'Class 40 (2). In sound recording or reproducing apparatus using a record of thin flexible material with a coating of magnetic particles, a member is provided which lies over the surface of the record in advance of the transducer head, this member smoothing out any buckling that may occur in the record. As shown the transducer head 6 is mounted on an arm 4, which also carries a metal strip 10 having a turned over edge 8 to form the smoothing member. The leading edge 9 of the member is slightly upturned. The arrangement can be utilised in apparatus as set out in Specification 697,161.
GB2351649A 1949-09-12 1949-09-12 Improvements in or relating to magnetic sound recording or reproducing apparatus Expired GB702662A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2351649A GB702662A (en) 1949-09-12 1949-09-12 Improvements in or relating to magnetic sound recording or reproducing apparatus
DEE2022A DE832073C (en) 1949-09-12 1950-08-29 Device for magnetic recording and reproduction of sounds
FR1024341D FR1024341A (en) 1949-09-12 1950-09-06 Sound recording or reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2351649A GB702662A (en) 1949-09-12 1949-09-12 Improvements in or relating to magnetic sound recording or reproducing apparatus

Publications (1)

Publication Number Publication Date
GB702662A true GB702662A (en) 1954-01-20

Family

ID=10196890

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2351649A Expired GB702662A (en) 1949-09-12 1949-09-12 Improvements in or relating to magnetic sound recording or reproducing apparatus

Country Status (3)

Country Link
DE (1) DE832073C (en)
FR (1) FR1024341A (en)
GB (1) GB702662A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060940A (en) * 1959-10-19 1962-10-30 Riken Kogaku Kogyo Kabushiki K Device for preparing magnetic record matrix plates in magnetic recording machines ofspiral track type

Also Published As

Publication number Publication date
DE832073C (en) 1952-02-21
FR1024341A (en) 1953-03-31

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