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GB1383238A - Phonograph pickup stylus - Google Patents

Phonograph pickup stylus

Info

Publication number
GB1383238A
GB1383238A GB1048472A GB1048472A GB1383238A GB 1383238 A GB1383238 A GB 1383238A GB 1048472 A GB1048472 A GB 1048472A GB 1048472 A GB1048472 A GB 1048472A GB 1383238 A GB1383238 A GB 1383238A
Authority
GB
United Kingdom
Prior art keywords
stylus
plane
march
degrees
angle
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
GB1048472A
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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
Priority claimed from JP46013537A external-priority patent/JPS4937526B1/ja
Priority claimed from JP7984671A external-priority patent/JPS5017845B2/ja
Priority claimed from JP7984571A external-priority patent/JPS4846304A/ja
Application filed by Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Publication of GB1383238A publication Critical patent/GB1383238A/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
    • 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

Landscapes

  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Optical Head (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Forging (AREA)

Abstract

1383238 Pick up stylus NIPPON VICTOR KK 7 March 1972 [13 March 1971 12 Oct 1971 (2)] 10484/72 Heading G5R A gramophone pick up stylus has a conical body 10 of diamond with at least one plane cut face 11 formed by grinding away part 16 of the body including the cone vertex 13 such that the plane of the face forms an angle with the stylus centre line 12 which is less than 90 degrees. The stylus shown is used with the cut face 11 vertical. In a further embodiment, Figs. 5-8 (not shown), which can be used with the stylus centre line vertical two such plane cut faces are formed at an angle of 120 degrees to each other.
GB1048472A 1971-03-13 1972-03-07 Phonograph pickup stylus Expired GB1383238A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP46013537A JPS4937526B1 (en) 1971-03-13 1971-03-13
JP7984671A JPS5017845B2 (en) 1971-10-12 1971-10-12
JP7984571A JPS4846304A (en) 1971-10-12 1971-10-12

Publications (1)

Publication Number Publication Date
GB1383238A true GB1383238A (en) 1975-02-05

Family

ID=27280301

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1048472A Expired GB1383238A (en) 1971-03-13 1972-03-07 Phonograph pickup stylus

Country Status (4)

Country Link
US (1) US3774918A (en)
DE (1) DE2211823C3 (en)
GB (1) GB1383238A (en)
NL (1) NL163038C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871664A (en) * 1973-05-29 1975-03-18 Diamagnetics Inc Phonograph stylus
GB1584747A (en) * 1976-08-27 1981-02-18 Gyger Fritz Styli for tracking a stereophonic or quadrophonic sound groove
GB1592361A (en) * 1976-09-13 1981-07-08 Rca Corp Stylus manufacture
DE87020T1 (en) * 1982-02-02 1984-07-19 Namiki Precision Jewel Co., Ltd., Tokyo SENSOR AND METHOD FOR THE PRODUCTION THEREOF.
CH670179A5 (en) * 1986-07-09 1989-05-12 Gyger Fritz

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534735A (en) * 1945-01-19 1950-12-19 Dictaphone Corp Guarded stylus
US2699720A (en) * 1950-04-13 1955-01-18 Winfield S Brooks Half tone engraving process
GB768414A (en) * 1954-06-18 1957-02-13 Pathe Marconi Ind Music Improvements in and relating to gramophone needles

Also Published As

Publication number Publication date
NL7203183A (en) 1972-09-15
DE2211823C3 (en) 1975-04-17
DE2211823A1 (en) 1972-10-12
DE2211823B2 (en) 1974-08-15
NL163038B (en) 1980-02-15
NL163038C (en) 1980-07-15
US3774918A (en) 1973-11-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee