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

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)

Similar Documents

Publication Publication Date Title
IE42312L (en) Wet laid laminate
US2591490A (en) Air filter
GB174372A (en) An improved gramophone disc and process for the manufacture of same
GB151173A (en) Improvements in stamping, crushing or like machines
ES407394A1 (en) Aminoplast resin and coated or laminated article of manufacture
GB647492A (en) Individual multilayer fibrous resin-bearing article
GB473988A (en) Improvements relating to the production of sound records
US1937680A (en) Moldable material
US1772163A (en) Diaphragm for sound-reproducing machines
US1450739A (en) Material for phonograph record blanks and process of making the same
US1264219A (en) Sound-reproducing diaphragm and process of making the same.
ES398530A1 (en) Non-woven fabrics
ES499876A0 (en) PROCEDURE FOR OBTAINING A STRATIFIED PLASTIC COVER COMBINED WITH A WOODEN PANEL
GB326765A (en) Improvements in gramophone records and the method of manufacture
US2020214A (en) Article made from synthetic resins, rubber, and other like moldable substances
GB349049A (en) Improvements in the manufacture of plates or blanks for making flexible discs for talking machines
GB468068A (en) Improvements relating to carriers of magnetic material for recording sound
GB240038A (en) Improvements in or relating to disc phonograph records or record blanks
ES219220A1 (en) An improvement in the manufacturing method of sound carriers (Machine-translation by Google Translate, not legally binding)
US1576582A (en) Phonograph record and method for producing same
GB284268A (en) Friction disc for clutches, brakes and the like
ES297684A3 (en) Improvements in the manufacture of decorative plates (Machine-translation by Google Translate, not legally binding)
GB400052A (en) Improvements in and relating to flexible disc couplings
GB262718A (en) Improvements in the manufacture of brake bodies
GB865852A (en) Method of producing wood and compound laminates with decorative facings