GB315488A - An improved method of electrically reproducing gramophone and like sound records - Google Patents

An improved method of electrically reproducing gramophone and like sound records

Info

Publication number
GB315488A
GB315488A GB1159328A GB1159328A GB315488A GB 315488 A GB315488 A GB 315488A GB 1159328 A GB1159328 A GB 1159328A GB 1159328 A GB1159328 A GB 1159328A GB 315488 A GB315488 A GB 315488A
Authority
GB
United Kingdom
Prior art keywords
pole
magnetic
gramophone
improved method
varied
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
GB1159328A
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.)
PAUL DOUGLAS TYERS
Original Assignee
PAUL DOUGLAS TYERS
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 PAUL DOUGLAS TYERS filed Critical PAUL DOUGLAS TYERS
Priority to GB1159328A priority Critical patent/GB315488A/en
Publication of GB315488A publication Critical patent/GB315488A/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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

315,488. Tyers, P. D. April 19, 1928. Magnetic instruments. - The magnetic flux through the vibrating armature of a gramophone pick-up is made variable to control the current output. In one modification Fig. 1, movable soft-iron plates 3, provided with knobs 4 slide in grooves 2 in a permanent magnet 1. Alternatively the relative position of plates 6, 8, Fig. 2, may be varied by moving plate 8 on a pivot 9. A further modification, Fig. 3, comprises a magnetic shunt 11, to which is attached a spring 12, also of magnetic material, in contact with the pole-pieces 10 and whose distance from the pole-pieces may be varied. A fourth construction, Fig. 4, comprises an iron screw 16 threaded into an extension 15 of a pole-piece 14, with a taper end 17 entering a tapered hole 18 in a corresponding extension of the other polepiece. The armature 19 moves between polepieces.
GB1159328A 1928-04-19 1928-04-19 An improved method of electrically reproducing gramophone and like sound records Expired GB315488A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1159328A GB315488A (en) 1928-04-19 1928-04-19 An improved method of electrically reproducing gramophone and like sound records

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1159328A GB315488A (en) 1928-04-19 1928-04-19 An improved method of electrically reproducing gramophone and like sound records

Publications (1)

Publication Number Publication Date
GB315488A true GB315488A (en) 1929-07-18

Family

ID=9989090

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1159328A Expired GB315488A (en) 1928-04-19 1928-04-19 An improved method of electrically reproducing gramophone and like sound records

Country Status (1)

Country Link
GB (1) GB315488A (en)

Similar Documents

Publication Publication Date Title
US2351003A (en) Recording and reproducing of vibrations
US2412123A (en) Electromagnetic device
GB1409789A (en) Magnet assembly
US2281793A (en) Magnetic recorder
US2148796A (en) Phonograph pick-up
GB315488A (en) An improved method of electrically reproducing gramophone and like sound records
US1728278A (en) Electromagnetic translating device
US1760647A (en) Electrical pick-up
GB334551A (en) Improvements relating to electro-magnetic gramophone pick-ups or recorders
US2213936A (en) Electrodynamic pickup
US901397A (en) Apparatus for recording and reproducing by the telegraphone principle.
US1799799A (en) Sound reproducer
USRE17796E (en) Phonograph reproducer
US1819573A (en) Method of and apparatus for translating energy
US1787579A (en) Translating device
GB355227A (en) Improvements relating to the mounting of vibrating reeds, more particularly for use in connection with electromagnetic gramophone pick-ups, loud speakers and the like
GB310284A (en) Improvements in and relating to apparatus for the electrical reproduction of sound
US1774975A (en) Electromagnetic pick-up device
GB270371A (en) Improvements in or relating to sound-reproducing apparatus
US1426743A (en) Electromagnetic sound-producing device
GB321144A (en) Improvements in and relating to electrical reproduction of gramophone and like sound records
GB416574A (en) Improvements in and relating to electromagnetic vibratory devices for use in the electrical reproduction of sound
GB517572A (en) Improvements in or relating to electro-magnetic switches or the like
US1799838A (en) Apparatus for reproducing sound from sound records
GB325067A (en) Improvements in or relating to electro-magnetic vibratory devices for use for example in the recording or reproduction of sound