GB755801A - Improvements in or relating to pick-ups comprising two or more record needles which are externally damped - Google Patents

Improvements in or relating to pick-ups comprising two or more record needles which are externally damped

Info

Publication number
GB755801A
GB755801A GB26613/54A GB2661354A GB755801A GB 755801 A GB755801 A GB 755801A GB 26613/54 A GB26613/54 A GB 26613/54A GB 2661354 A GB2661354 A GB 2661354A GB 755801 A GB755801 A GB 755801A
Authority
GB
United Kingdom
Prior art keywords
needles
pick
ups
relating
sept
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
GB26613/54A
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 GB755801A publication Critical patent/GB755801A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R17/06—Gramophone pick-ups using a stylus; Recorders using a stylus comprising two or more styli or transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Moving Of Heads (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

755,801. Gramophone pick-ups. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 14, 1954 [Sept. 17, 1953], No. 26613/54. Class 40(2) Needle damping in a pick-up having two or more alternatively usable record engaging resilient needles 4, 4a is provided by respective damping members 11, 12 disposed externally and between the needles and extensions 13, 14 of respective vibrating elements 5 15 by which the needles are secured, through a common torsion shaft 8, to a common transducing element 6. The needles may be sapphire tipped at 2, 3 and the transducing element 6 may be a crystal.
GB26613/54A 1953-09-17 1954-09-14 Improvements in or relating to pick-ups comprising two or more record needles which are externally damped Expired GB755801A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL323037X 1953-09-17

Publications (1)

Publication Number Publication Date
GB755801A true GB755801A (en) 1956-08-29

Family

ID=19784069

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26613/54A Expired GB755801A (en) 1953-09-17 1954-09-14 Improvements in or relating to pick-ups comprising two or more record needles which are externally damped

Country Status (6)

Country Link
US (1) US3051495A (en)
BE (1) BE531866A (en)
CH (1) CH323037A (en)
DE (1) DE1003966B (en)
FR (1) FR1108245A (en)
GB (1) GB755801A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3245690A (en) * 1963-09-18 1966-04-12 Dorothea M Weitzner Adjustable multi-needle tone arm for phonograph records
US4194744A (en) * 1978-02-01 1980-03-25 Shure Brothers, Incorporated Phonograph pick-up transducer using a one-piece bearing and inertial damper fabricated from different materials

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2554209A (en) * 1945-12-29 1951-05-22 Gen Electric Dual stylus phonograph pickup for multispeed record players
US2658763A (en) * 1948-07-31 1953-11-10 Rca Corp Phonograph pickup device and the like
US2601126A (en) * 1948-11-04 1952-06-17 Astatic Corp Universal phonograph tone arm
US2586362A (en) * 1949-03-11 1952-02-19 Magnavox Co Dual point phonograph pickup stylus
US2639156A (en) * 1949-10-29 1953-05-19 Gen Electric Double-twist phonograph stylus assembly

Also Published As

Publication number Publication date
US3051495A (en) 1962-08-28
BE531866A (en)
CH323037A (en) 1957-07-15
FR1108245A (en) 1956-01-10
DE1003966B (en) 1957-03-07

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