GB336794A - Improvements in or relating to gramophones and like instruments - Google Patents

Improvements in or relating to gramophones and like instruments

Info

Publication number
GB336794A
GB336794A GB3149229A GB3149229A GB336794A GB 336794 A GB336794 A GB 336794A GB 3149229 A GB3149229 A GB 3149229A GB 3149229 A GB3149229 A GB 3149229A GB 336794 A GB336794 A GB 336794A
Authority
GB
United Kingdom
Prior art keywords
lead
record
covered
turntable
rubber
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
GB3149229A
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.)
PERCY JOHN MAFFEY
Original Assignee
PERCY JOHN MAFFEY
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 PERCY JOHN MAFFEY filed Critical PERCY JOHN MAFFEY
Priority to GB3149229A priority Critical patent/GB336794A/en
Publication of GB336794A publication Critical patent/GB336794A/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
    • G11B19/2018—Incorporating means for passive damping of vibration, either in the turntable, motor or mounting

Landscapes

  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)

Abstract

336,794. Maffey,P.J. Oct. 16, 1929. Turntables.-The metal turntable, apertured to reduce resonance, has annular strips or discs of lead secured thereto on which the record is supported-either directly or indirectly. Fig. 2 shows a metal turntable 1 with segmental apertures and covered near its periphery with an annular strip 4 of lead which is turned over the apertures and covered with a layer 6 of rubber carrying pads 8 on which the outer part of the record rests. The central part is supported on a platform comprising a metal plate 10 covered, if desired, with rubber and resting on a lead disc 9 separated by lead supports 11 from the turntable. This platform has a central pin 12 with a rubber sleeve 13, which can be expanded by a lever 14 to grip the central hole in the record.
GB3149229A 1929-10-16 1929-10-16 Improvements in or relating to gramophones and like instruments Expired GB336794A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3149229A GB336794A (en) 1929-10-16 1929-10-16 Improvements in or relating to gramophones and like instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3149229A GB336794A (en) 1929-10-16 1929-10-16 Improvements in or relating to gramophones and like instruments

Publications (1)

Publication Number Publication Date
GB336794A true GB336794A (en) 1930-10-23

Family

ID=10323875

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3149229A Expired GB336794A (en) 1929-10-16 1929-10-16 Improvements in or relating to gramophones and like instruments

Country Status (1)

Country Link
GB (1) GB336794A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4260163A (en) * 1980-05-08 1981-04-07 A.R.D. Technical Assistance And Engineering Services International Anstalt Phonographic source
US4368530A (en) * 1978-05-11 1983-01-11 Darnall Jr Tom A Acoustic dampening assembly for record player turntable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4368530A (en) * 1978-05-11 1983-01-11 Darnall Jr Tom A Acoustic dampening assembly for record player turntable
US4260163A (en) * 1980-05-08 1981-04-07 A.R.D. Technical Assistance And Engineering Services International Anstalt Phonographic source

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