GB676489A - Improvements in or relating to gramophone pick-ups - Google Patents

Improvements in or relating to gramophone pick-ups

Info

Publication number
GB676489A
GB676489A GB16902/50A GB1690250A GB676489A GB 676489 A GB676489 A GB 676489A GB 16902/50 A GB16902/50 A GB 16902/50A GB 1690250 A GB1690250 A GB 1690250A GB 676489 A GB676489 A GB 676489A
Authority
GB
United Kingdom
Prior art keywords
ups
gramophone pick
relating
july
head
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
GB16902/50A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB676489A publication Critical patent/GB676489A/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
    • G11B3/02—Arrangements of heads
    • G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers

Landscapes

  • Vibration Prevention Devices (AREA)

Abstract

676,489. Supporting gramophone pick-ups. PHILIPS ELECTRICAL INDUSTRIES, Ltd. July 6, 1950. [July 9, 1949] No. 16902/50. Class 40 (ii). In a gramophone pick-up arm assembly in which the vibratory axis 14 of the head is set at an angle with regard to a vertical plane AA passing through the pivot 4 and the needle point 9, the head is weighted at 7 so that the masses are equally distributed each side of the aforementioned plane AA, and the rigidity of the arm 2 is such that the torsional resonance frequency is less than 200 cycles/sec.
GB16902/50A 1949-07-09 1950-07-06 Improvements in or relating to gramophone pick-ups Expired GB676489A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL676489X 1949-07-09

Publications (1)

Publication Number Publication Date
GB676489A true GB676489A (en) 1952-07-30

Family

ID=19802295

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16902/50A Expired GB676489A (en) 1949-07-09 1950-07-06 Improvements in or relating to gramophone pick-ups

Country Status (1)

Country Link
GB (1) GB676489A (en)

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