GB531491A - Improvements in or relating to sound recording stylus - Google Patents

Improvements in or relating to sound recording stylus

Info

Publication number
GB531491A
GB531491A GB2146839A GB2146839A GB531491A GB 531491 A GB531491 A GB 531491A GB 2146839 A GB2146839 A GB 2146839A GB 2146839 A GB2146839 A GB 2146839A GB 531491 A GB531491 A GB 531491A
Authority
GB
United Kingdom
Prior art keywords
sound recording
recording stylus
relating
axis
cutting face
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
GB2146839A
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.)
FILM RECORDING CORP
Original Assignee
FILM RECORDING CORP
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 FILM RECORDING CORP filed Critical FILM RECORDING CORP
Priority to GB2146839A priority Critical patent/GB531491A/en
Publication of GB531491A publication Critical patent/GB531491A/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
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank
    • G11B3/48—Needles

Landscapes

  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

531,491. Sound recording stylus. STEVENS, A. H. (Film Recording Corporation). July 24, 1939, No. 21468. [Class 40 (ii)] A sound recording stylus comprises a conical body of steel, sapphire, or diamond with a rounded end and slightly less than the front half cut off parallel to the axis D to form a flat or slightly concave or convex cutting face A surrounded by a narrow burnishing edge between the cutting face A and the plane B-B through the axis D.
GB2146839A 1939-07-24 1939-07-24 Improvements in or relating to sound recording stylus Expired GB531491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2146839A GB531491A (en) 1939-07-24 1939-07-24 Improvements in or relating to sound recording stylus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2146839A GB531491A (en) 1939-07-24 1939-07-24 Improvements in or relating to sound recording stylus

Publications (1)

Publication Number Publication Date
GB531491A true GB531491A (en) 1941-01-06

Family

ID=10163451

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2146839A Expired GB531491A (en) 1939-07-24 1939-07-24 Improvements in or relating to sound recording stylus

Country Status (1)

Country Link
GB (1) GB531491A (en)

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