GB299752A - Improvements in and relating to sound reproducing records - Google Patents

Improvements in and relating to sound reproducing records

Info

Publication number
GB299752A
GB299752A GB1993227A GB1993227A GB299752A GB 299752 A GB299752 A GB 299752A GB 1993227 A GB1993227 A GB 1993227A GB 1993227 A GB1993227 A GB 1993227A GB 299752 A GB299752 A GB 299752A
Authority
GB
United Kingdom
Prior art keywords
consist
relating
records
sound reproducing
blanks
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
GB1993227A
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.)
ALFRED THOMAS WARD
British Thomson Houston Co Ltd
Original Assignee
ALFRED THOMAS WARD
British Thomson Houston Co 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 ALFRED THOMAS WARD, British Thomson Houston Co Ltd filed Critical ALFRED THOMAS WARD
Priority to GB1993227A priority Critical patent/GB299752A/en
Publication of GB299752A publication Critical patent/GB299752A/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
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/68—Record carriers
    • G11B3/70—Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers

Landscapes

  • Food-Manufacturing Devices (AREA)

Abstract

299,752. British Thomson-Houston Co., Ltd., Sporborg, H. N., Young, A. P., and Ward, A. T. July 27, 1927. Records, blanks for. - Gramophone and like record blanks consist of thin metal disc coated on one or both sides with a synthetic resin, and having an additional thin coating of shellac for receiving the sound-groove impressions. The artificial resin preferably used is made from phthalic anhydride and glycerine. The resin may be mixed with a filler such as wood flour, or chalk, and may contain a colouring medium. The metal core may be perforated, or may consist of one or more layers of metal gauze.
GB1993227A 1927-07-27 1927-07-27 Improvements in and relating to sound reproducing records Expired GB299752A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1993227A GB299752A (en) 1927-07-27 1927-07-27 Improvements in and relating to sound reproducing records

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1993227A GB299752A (en) 1927-07-27 1927-07-27 Improvements in and relating to sound reproducing records

Publications (1)

Publication Number Publication Date
GB299752A true GB299752A (en) 1928-10-29

Family

ID=10137533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1993227A Expired GB299752A (en) 1927-07-27 1927-07-27 Improvements in and relating to sound reproducing records

Country Status (1)

Country Link
GB (1) GB299752A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578892A (en) * 1944-04-07 1951-12-18 Emi Ltd Sound recording disk

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578892A (en) * 1944-04-07 1951-12-18 Emi Ltd Sound recording disk

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