GB818914A - Improvements in or relating to gramophone turntables - Google Patents

Improvements in or relating to gramophone turntables

Info

Publication number
GB818914A
GB818914A GB97158A GB97158A GB818914A GB 818914 A GB818914 A GB 818914A GB 97158 A GB97158 A GB 97158A GB 97158 A GB97158 A GB 97158A GB 818914 A GB818914 A GB 818914A
Authority
GB
United Kingdom
Prior art keywords
members
centre
gramophone
turntable
hole
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
GB97158A
Inventor
Archibald Eric Humphrey Minns
Harold Ernest Barnes
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 GB97158A priority Critical patent/GB818914A/en
Publication of GB818914A publication Critical patent/GB818914A/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
    • 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
    • G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
    • 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
    • G11B17/022—Positioning or locking of single discs
    • G11B17/028—Positioning or locking of single discs of discs rotating during transducing operation
    • G11B17/0281—Positioning or locking of single discs of discs rotating during transducing operation by an adapter enabling the centre-pin to receive carriers with large centre hole

Abstract

818,914. Gramophone turntables. ELECTRIC & MUSICAL INDUSTRIES Ltd. Jan. 31, 1956 [Feb. 10, 1955], No. 971/58. Divided out of 818,913. Class 40 (2). A gramophone turntable having a normal size centre pin to locate records with a normal small size centre hole, is also provided with a plurality of depressible angularly spaced radially placed members 40 for centring records with large centre holes. The said members 40 are provided with upturned inner ends 39 around which the large hole of a record is located, and the opposite ends have elongated holes to enable the inner ends to be accurately set. The members 40 lay in slots in the turntable and are covered by a rubber mat 47 having a centre hole 46 to clear the upstanding ends 39 of the members 40.
GB97158A 1955-02-18 1955-02-18 Improvements in or relating to gramophone turntables Expired GB818914A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB97158A GB818914A (en) 1955-02-18 1955-02-18 Improvements in or relating to gramophone turntables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB97158A GB818914A (en) 1955-02-18 1955-02-18 Improvements in or relating to gramophone turntables

Publications (1)

Publication Number Publication Date
GB818914A true GB818914A (en) 1959-08-26

Family

ID=9713746

Family Applications (1)

Application Number Title Priority Date Filing Date
GB97158A Expired GB818914A (en) 1955-02-18 1955-02-18 Improvements in or relating to gramophone turntables

Country Status (1)

Country Link
GB (1) GB818914A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3418000A (en) * 1967-06-19 1968-12-24 Electra Associates Turntable for phonograph records
US4570256A (en) * 1983-09-14 1986-02-11 Nippon Gakki Seizo Kabushiki Kaisha Disc centering device for use in a disc player
FR3012905A1 (en) * 2013-11-07 2015-05-08 Jerome Caclin DEVICE FOR ADJUSTING THE ROTATION CENTER OF A MICROSILLON DISC, INTENDED IN PARTICULAR FOR MUSICAL USE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3418000A (en) * 1967-06-19 1968-12-24 Electra Associates Turntable for phonograph records
US4570256A (en) * 1983-09-14 1986-02-11 Nippon Gakki Seizo Kabushiki Kaisha Disc centering device for use in a disc player
FR3012905A1 (en) * 2013-11-07 2015-05-08 Jerome Caclin DEVICE FOR ADJUSTING THE ROTATION CENTER OF A MICROSILLON DISC, INTENDED IN PARTICULAR FOR MUSICAL USE

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