GB619182A - Improvements in or relating to electro-dynamic pick-ups - Google Patents

Improvements in or relating to electro-dynamic pick-ups

Info

Publication number
GB619182A
GB619182A GB34927/46A GB3492746A GB619182A GB 619182 A GB619182 A GB 619182A GB 34927/46 A GB34927/46 A GB 34927/46A GB 3492746 A GB3492746 A GB 3492746A GB 619182 A GB619182 A GB 619182A
Authority
GB
United Kingdom
Prior art keywords
ups
coil
electro
relating
holder
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
GB34927/46A
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.)
PHILLIPS LAMPS Ltd
Original Assignee
PHILLIPS LAMPS 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 PHILLIPS LAMPS Ltd filed Critical PHILLIPS LAMPS Ltd
Publication of GB619182A publication Critical patent/GB619182A/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/12—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)

Abstract

619,182. Gramophone pick-ups. PHILIPS LAMPS, Ltd. Nov. 25, 1946, No. 34927. Convention date, July 9, 1943. [Class 40 (iv)] In a moving - coil gramophone pick - up, wear on the record 9 caused by "pinch effect," i.e. narrowing of the groove at points of greatest slope, is reduced by suspending the coil-holder 1a on a strip or wire 2 running parallel to the direction of travel, and mounting said coil-holder 1a at unequal distances from the fixed ends 3, 4 of the strip or wire 2.
GB34927/46A 1943-07-09 1946-11-25 Improvements in or relating to electro-dynamic pick-ups Expired GB619182A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL245733X 1943-07-09

Publications (1)

Publication Number Publication Date
GB619182A true GB619182A (en) 1949-03-04

Family

ID=19780826

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34927/46A Expired GB619182A (en) 1943-07-09 1946-11-25 Improvements in or relating to electro-dynamic pick-ups

Country Status (6)

Country Link
US (1) US2509968A (en)
BE (1) BE457138A (en)
CH (1) CH245733A (en)
DE (1) DE847355C (en)
FR (1) FR906858A (en)
GB (1) GB619182A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2858375A (en) * 1955-10-11 1958-10-28 Rca Corp Wide range dynamic phonograph pickup

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1689339A (en) * 1923-12-15 1928-10-30 Western Electric Co Energy-translation system
US1785047A (en) * 1927-09-14 1930-12-16 Rca Corp Method and means for cutting phonograph records
GB384531A (en) * 1931-04-22 1932-12-08 Paillard & Cie Sa E Improvements in or relating to gramophone pick-ups
US2025388A (en) * 1934-09-05 1935-12-24 Bell Telephone Labor Inc Sound reproducing system
NL61306C (en) * 1937-10-07
US2290057A (en) * 1938-09-12 1942-07-14 Jr Theodore Lindenberg Sound recording and reproducing mechanism

Also Published As

Publication number Publication date
BE457138A (en)
CH245733A (en) 1946-11-30
FR906858A (en) 1946-02-22
US2509968A (en) 1950-05-30
DE847355C (en) 1952-08-25

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