GB337173A - Improvements in or relating to electro-dynamic devices for converting electric oscillations into acoustic vibrations or conversely - Google Patents

Improvements in or relating to electro-dynamic devices for converting electric oscillations into acoustic vibrations or conversely

Info

Publication number
GB337173A
GB337173A GB3079229A GB3079229A GB337173A GB 337173 A GB337173 A GB 337173A GB 3079229 A GB3079229 A GB 3079229A GB 3079229 A GB3079229 A GB 3079229A GB 337173 A GB337173 A GB 337173A
Authority
GB
United Kingdom
Prior art keywords
coil
electro
conversely
relating
arms
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
GB3079229A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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
Priority to BE372585D priority Critical patent/BE372585A/xx
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Priority to GB3079229A priority patent/GB337173A/en
Priority to US473265A priority patent/US1907687A/en
Priority to DE1930548070D priority patent/DE548070C/en
Priority to FR700634D priority patent/FR700634A/en
Publication of GB337173A publication Critical patent/GB337173A/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
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/041—Centering

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Fluid-Damping Devices (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

337,173. Dicker, S. G. S., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Oct. 10, 1929. Magnetic instruments.-A supporting and centring body 1 for the coil of a loud - speaker, gramophone pick-up or like instrument is made of insulating material and the electric connections between the coil 2 and the points of connection 5 for the speech currents consist of metallic conductors 6 which either pass through or are mounted on the material of the body. In the construction shown the coil 2 is wound on a small cylinder 3 integral with the arms 4 of a supporting spider and the conductors 6 are adapted to be embedded in the arms during the formation of the support, while in a modification, the conductors are formed by squirting metal in a pulverized or fluid state on the surface of the arms 4.
GB3079229A 1929-09-03 1929-10-10 Improvements in or relating to electro-dynamic devices for converting electric oscillations into acoustic vibrations or conversely Expired GB337173A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE372585D BE372585A (en) 1929-09-03
GB3079229A GB337173A (en) 1929-10-10 1929-10-10 Improvements in or relating to electro-dynamic devices for converting electric oscillations into acoustic vibrations or conversely
US473265A US1907687A (en) 1929-09-03 1930-08-05 Coil supporting spider
DE1930548070D DE548070C (en) 1929-09-03 1930-08-12 Support and centering bodies made of insulating material
FR700634D FR700634A (en) 1929-09-03 1930-08-13 Support and centering member of the coil of an electrodynamic device, making it possible to transform electrical oscillations into acoustic oscillations or vice versa

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3079229A GB337173A (en) 1929-10-10 1929-10-10 Improvements in or relating to electro-dynamic devices for converting electric oscillations into acoustic vibrations or conversely

Publications (1)

Publication Number Publication Date
GB337173A true GB337173A (en) 1930-10-30

Family

ID=10313189

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3079229A Expired GB337173A (en) 1929-09-03 1929-10-10 Improvements in or relating to electro-dynamic devices for converting electric oscillations into acoustic vibrations or conversely

Country Status (1)

Country Link
GB (1) GB337173A (en)

Similar Documents

Publication Publication Date Title
Rice et al. Notes on the development of a new type of hornless loud speaker
US1755636A (en) Loud-speaker
GB337173A (en) Improvements in or relating to electro-dynamic devices for converting electric oscillations into acoustic vibrations or conversely
CN207427469U (en) Novel piezoelectric ceramic type high pitch loudspeaker
GB285315A (en) Improvements in electrical pick-up and amplifying devices for use with gramophones and the like
Wente et al. A high efficiency receiver for a horn-type loud speaker of large power capacity
GB510297A (en) Improvements in or relating to gramophone pick-ups and like devices
US1893049A (en) Sound producing device
US1703926A (en) Loud-speaking telephone receiver
US1852594A (en) Means for converting sound into electrical impulses
US1749284A (en) Apparatus for transforming sound into electrical energy
GB315505A (en) Improvements relating to gramophones and like sound reproducing instruments
US1980242A (en) Telephone receiver
US1330402A (en) Talking-machine
US1621180A (en) Electromagnetic apparatus for recording sound
US281240A (en) Telephone-transmitter
US1153431A (en) Instrument for reproducing and magnifying sound-waves.
US1796238A (en) Pick-up device
US2030001A (en) Cone for use in wireless loudspeakers, telephones, and the like
US1881830A (en) Electrical sound reproduction of gramophone and like records
US1666854A (en) Loud speaker
US1734312A (en) Electrical phonograph apparatus
GB469194A (en) Improvements in or relating to acoustic reproducers
US1868396A (en) Sound reproducing mechanism
GB278040A (en) Improvements in or relating to a device for converting electric oscillations into acoustic vibrations, such as a loudspeaker