GB286719A - Improvements relating to electro-magnetic sound recorders and reproducers - Google Patents

Improvements relating to electro-magnetic sound recorders and reproducers

Info

Publication number
GB286719A
GB286719A GB6884/28A GB688428A GB286719A GB 286719 A GB286719 A GB 286719A GB 6884/28 A GB6884/28 A GB 6884/28A GB 688428 A GB688428 A GB 688428A GB 286719 A GB286719 A GB 286719A
Authority
GB
United Kingdom
Prior art keywords
secured
casing
armature
castings
filled
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
GB6884/28A
Other languages
English (en)
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB286719A publication Critical patent/GB286719A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/16—Mounting or connecting stylus to transducer with or without damping means
    • 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)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Combined Devices Of Dampers And Springs (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Moving Of Heads (AREA)
  • Fluid-Damping Devices (AREA)
GB6884/28A 1927-03-10 1928-03-05 Improvements relating to electro-magnetic sound recorders and reproducers Expired GB286719A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US174355A US1760527A (en) 1927-03-10 1927-03-10 Electrical device

Publications (1)

Publication Number Publication Date
GB286719A true GB286719A (en) 1928-11-22

Family

ID=22635864

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6884/28A Expired GB286719A (en) 1927-03-10 1928-03-05 Improvements relating to electro-magnetic sound recorders and reproducers

Country Status (5)

Country Link
US (1) US1760527A (enrdf_load_stackoverflow)
DE (1) DE546861C (enrdf_load_stackoverflow)
FR (1) FR651366A (enrdf_load_stackoverflow)
GB (1) GB286719A (enrdf_load_stackoverflow)
NL (1) NL29665C (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514379A (en) * 1947-08-25 1950-07-11 Jr Charles R Douglass Electrodynamic recording head

Also Published As

Publication number Publication date
DE546861C (de) 1932-03-21
FR651366A (fr) 1929-02-18
NL29665C (enrdf_load_stackoverflow)
US1760527A (en) 1930-05-27

Similar Documents

Publication Publication Date Title
GB190759A (en) Improvements in electrc-magnetic apparatus for recording sound
US2511663A (en) Magnetic phonograph pickup
GB286719A (en) Improvements relating to electro-magnetic sound recorders and reproducers
GB261698A (en) Improvements in sound reproducing apparatus
GB334493A (en) Improvements in and relating to apparatus for producing sound
US1845988A (en) Apparatus for recordation and reproduction of sound
US1747829A (en) Electrical reproducer
GB287954A (en) Improvements in and relating to the reproduction of talking machine records by electrical means
GB539308A (en) Improvements in translation devices for phonographs
GB291116A (en) Improvements in electromechanical vibrators
GB294556A (en) Improvements relating to means for the interconversion of mechanical and electrical oscillations
GB260148A (en) Improvements in and relating to electromagnetic apparatus for the interconversion ofelectrical and mechanical oscillations
GB312468A (en) Improvements in or connected with sound reproducing and recording apparatus
GB211826A (en) Improvements in or relating to sound-reproducing devices, applicable also for recording telegraphic signals
GB313406A (en) Method and apparatus for the electromagnetic reproduction of sound
US1845987A (en) Apparatus for recordation and reproduction of sound
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
US1739228A (en) Electrical reproducer for phonograph records
GB293483A (en) Improvements in or relating to electrical reproduction of sound from records
GB290264A (en) Improvements in electromagnetic devices for recording sound and reproducing sound from records
GB325067A (en) Improvements in or relating to electro-magnetic vibratory devices for use for example in the recording or reproduction of sound
GB296207A (en) Improvements in electro-magnetic sound reproducing and recording devices
GB294060A (en) Improvements in or relating to the operation of loud speakers
GB126970A (en) Improvements in or relating to Reproducing Apparatus for use with Phonographs and other Talking Machines.
GB313484A (en) Electromagnetic sound reproducer