GB236313A - Improvements in electro-magnetic transmitters and receivers for reproducing sound - Google Patents

Improvements in electro-magnetic transmitters and receivers for reproducing sound

Info

Publication number
GB236313A
GB236313A GB960724A GB960724A GB236313A GB 236313 A GB236313 A GB 236313A GB 960724 A GB960724 A GB 960724A GB 960724 A GB960724 A GB 960724A GB 236313 A GB236313 A GB 236313A
Authority
GB
United Kingdom
Prior art keywords
sound
pieces
sheet
strip
petroleum jelly
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
GB960724A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB960724A priority Critical patent/GB236313A/en
Publication of GB236313A publication Critical patent/GB236313A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • 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
    • 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
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction
    • H04R9/047—Construction in which the windings of the moving coil lay in the same plane
    • 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
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction
    • H04R9/047—Construction in which the windings of the moving coil lay in the same plane
    • H04R9/048—Construction in which the windings of the moving coil lay in the same plane of the ribbon type
    • 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
    • H04R9/06—Loudspeakers
    • H04R9/063—Loudspeakers using a plurality of acoustic drivers
    • 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
    • H04R9/08—Microphones
    • 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

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Amplifiers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Measuring Magnetic Variables (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Headphones And Earphones (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Telephone Function (AREA)
  • Level Indicators Using A Float (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

236,313. Sykes, A. F. April 15, 1924. Addition to 160,223 and 186,658. Magnetic instruments; loud-specakers; diaphragms.-In an electrodynamic telephone transmitter or receiver comprising an extended conducting winding or sheet, re-entrant in the direction of the current flow, arranged in a magnetic field, and itself adapted to receive or generate sound, the arrangement is such that sound waves cannot leak past the said winding or sheet. In one form, Fig. II, a solenoid sheet 102 of conducting material is wound in re-entrant manner over distance pieces 103 extending between magnetic poles. A sound channel 105 communicates with the interior. Some of the re-entrant loops may be omitted. In another form, Fig. IV, the sheet 102 is arranged as shown, a sound channel 105 being provided in a cover plate. The space at the lower end of the Figure may be left open or the arrangement duplicated with a second sound channel at the, bottom. An adjustment wheel may be provided on one of the end distance pieces to take up slack in the strip. Each loop may be replaced by a bag, Fig. IX. An extended surface in line may be used. Fig. VII, the sound being collected from the space 220 through a slit in one or both pole-pieces. This slit is opened out according to a logarithmic law until a square section is obtained, after which a horn is attached. In all forms the edges of the strip are arranged so that sound cannot leak past and various forms of seal for the purpose are described. The edges may extend into slots in the pole-pieces, which slots are filled with oil or petroleum jelly, or may abut into plush velvet, or petroleum jelly on the faces of the pole-pieces. String or velvet may be used in conjunction with petroleum jelly. These forms of seal permit the edges of the strip to move inwards to accommodate bulging. The conducting strip may consist of aluminium mounted by means of petroleum jelly or rubber solution on a band of thin paper or silk, or may be a winding of metallic tape of many turns. Overlapping turns of bare aluminium tape may be used, the natural oxide providing the necessary insulation.
GB960724A 1919-11-18 1924-04-15 Improvements in electro-magnetic transmitters and receivers for reproducing sound Expired GB236313A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB960724A GB236313A (en) 1919-11-18 1924-04-15 Improvements in electro-magnetic transmitters and receivers for reproducing sound

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2858219A GB160223A (en) 1919-11-18 1919-11-18 Improvements in telephonic and like apparatus
GB960724A GB236313A (en) 1919-11-18 1924-04-15 Improvements in electro-magnetic transmitters and receivers for reproducing sound

Publications (1)

Publication Number Publication Date
GB236313A true GB236313A (en) 1925-07-09

Family

ID=40451138

Family Applications (9)

Application Number Title Priority Date Filing Date
GB2858219A Expired GB160223A (en) 1919-11-18 1919-11-18 Improvements in telephonic and like apparatus
GB2286021A Expired GB190759A (en) 1919-11-18 1921-08-29 Improvements in electrc-magnetic apparatus for recording sound
GB3390721A Expired GB194424A (en) 1919-11-18 1921-12-16 Improvements in electro-magnetic apparatus for recording sound
GB1687423A Expired GB220420A (en) 1919-11-18 1923-06-28 Improved electro-magnetic means for transmitting and reproducing sound
GB1727523A Expired GB222924A (en) 1919-11-18 1923-07-03 Improvements in electric sound reproducing apparatus
GB2168924A Expired GB227391A (en) 1919-11-18 1923-07-03 Improvements in or relating to electric apparatus for the reproduction of recorded sounds
GB2481023A Expired GB227162A (en) 1919-11-18 1923-10-05 Improvements in electro-magnetic transmitters and receivers for reproducing sound
GB960724A Expired GB236313A (en) 1919-11-18 1924-04-15 Improvements in electro-magnetic transmitters and receivers for reproducing sound
GB1436327A Expired GB301437A (en) 1919-11-18 1927-05-27 Improvements in electrodynamic loudspeakers

Family Applications Before (7)

Application Number Title Priority Date Filing Date
GB2858219A Expired GB160223A (en) 1919-11-18 1919-11-18 Improvements in telephonic and like apparatus
GB2286021A Expired GB190759A (en) 1919-11-18 1921-08-29 Improvements in electrc-magnetic apparatus for recording sound
GB3390721A Expired GB194424A (en) 1919-11-18 1921-12-16 Improvements in electro-magnetic apparatus for recording sound
GB1687423A Expired GB220420A (en) 1919-11-18 1923-06-28 Improved electro-magnetic means for transmitting and reproducing sound
GB1727523A Expired GB222924A (en) 1919-11-18 1923-07-03 Improvements in electric sound reproducing apparatus
GB2168924A Expired GB227391A (en) 1919-11-18 1923-07-03 Improvements in or relating to electric apparatus for the reproduction of recorded sounds
GB2481023A Expired GB227162A (en) 1919-11-18 1923-10-05 Improvements in electro-magnetic transmitters and receivers for reproducing sound

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB1436327A Expired GB301437A (en) 1919-11-18 1927-05-27 Improvements in electrodynamic loudspeakers

Country Status (3)

Country Link
DE (1) DE400634C (en)
FR (3) FR536796A (en)
GB (9) GB160223A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2311438A (en) * 1996-03-21 1997-09-24 Sennheiser Electronic Electrodynamic transducer with a moving coil in a magnetic air gap acoustically sealed by a liquid or solid medium

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL55929B (en) * 1930-03-10
NL61306C (en) * 1937-10-07
BE472060A (en) * 1945-12-11
US3164686A (en) * 1959-09-21 1965-01-05 Tibbetts Industries Electrodynamic transducer
FR1269138A (en) * 1960-06-23 1961-08-11 Improvements to loudspeakers, microphones, and similar electrodynamic devices
EP0065883A3 (en) * 1981-05-26 1984-01-11 Celestion International Limited Ring radiator for loudspeakers
GB2123651B (en) * 1982-06-29 1986-08-06 Stanley Kelly Transducers
DE3507726A1 (en) * 1985-03-05 1986-09-11 Standard Elektrik Lorenz Ag, 7000 Stuttgart MEMBRANE FOR PLANAR SPEAKER
DE10036100C1 (en) 2000-07-25 2002-02-14 Adidas Int Bv Sports shoe has inner sole layer with openings, support layer with second openings that overlap first openings and outer sole layer with at least one opening that overlaps second openings
GB2562709A (en) * 2017-04-04 2018-11-28 Arthur Brice Richard Operation of an electrodynamic gramophone pickup as a displacement-sensitive transducer by detecting short-circuit current

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2311438A (en) * 1996-03-21 1997-09-24 Sennheiser Electronic Electrodynamic transducer with a moving coil in a magnetic air gap acoustically sealed by a liquid or solid medium
GB2311438B (en) * 1996-03-21 2000-02-23 Sennheiser Electronic Electrodynamic acoustic transducer with magnetic gap sealing
US6208743B1 (en) 1996-03-21 2001-03-27 Sennheiser Electronic Gmbh & Co. K.G. Electrodynamic acoustic transducer with magnetic gap sealing

Also Published As

Publication number Publication date
FR29391E (en) 1925-07-25
GB301437A (en) 1928-11-27
GB227391A (en) 1925-01-05
GB220420A (en) 1924-08-21
GB190759A (en) 1922-12-29
GB160223A (en) 1921-03-18
FR29316E (en) 1925-07-24
GB227162A (en) 1925-01-05
GB194424A (en) 1923-03-15
GB222924A (en) 1924-10-03
DE400634C (en) 1924-08-16
FR536796A (en) 1922-05-09

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