GB174372A - An improved gramophone disc and process for the manufacture of same - Google Patents

An improved gramophone disc and process for the manufacture of same

Info

Publication number
GB174372A
GB174372A GB199822A GB199822A GB174372A GB 174372 A GB174372 A GB 174372A GB 199822 A GB199822 A GB 199822A GB 199822 A GB199822 A GB 199822A GB 174372 A GB174372 A GB 174372A
Authority
GB
United Kingdom
Prior art keywords
manufacture
same
improved
gramophone disc
compound
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
GB199822A
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.)
HERMANN ROMMLER
Original Assignee
HERMANN ROMMLER
Filing date
Publication date
Application filed by HERMANN ROMMLER filed Critical HERMANN ROMMLER
Publication of GB174372A publication Critical patent/GB174372A/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

  • Laminated Bodies (AREA)

Abstract

174,372. R÷mmler, H. Jan. 21, 1921, [Convention date]. Compound sheet materials. -Gramophone records are made of fibrous layers of paper &c., which are not very absorbent, impregnated or covered on both sides with artificial resin consisting of a compound of phenol and formaldehyde. The layers are placed together and pressed between treated dies.
GB199822A 1922-01-23 An improved gramophone disc and process for the manufacture of same Expired GB174372A (en)

Publications (1)

Publication Number Publication Date
GB174372A true GB174372A (en) 1922-11-23

Family

ID=1627096

Family Applications (1)

Application Number Title Priority Date Filing Date
GB199822A Expired GB174372A (en) 1922-01-23 An improved gramophone disc and process for the manufacture of same

Country Status (1)

Country Link
GB (1) GB174372A (en)

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