GB646429A - Improvements in or relating to stylus-equipped electro-magnetic devices for the recording and reproduction of sound - Google Patents

Improvements in or relating to stylus-equipped electro-magnetic devices for the recording and reproduction of sound

Info

Publication number
GB646429A
GB646429A GB1176047A GB1176047A GB646429A GB 646429 A GB646429 A GB 646429A GB 1176047 A GB1176047 A GB 1176047A GB 1176047 A GB1176047 A GB 1176047A GB 646429 A GB646429 A GB 646429A
Authority
GB
United Kingdom
Prior art keywords
reproduction
sound
former
stylus
recording
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
GB1176047A
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.)
REGINALD GEORGE MAY
Original Assignee
REGINALD GEORGE MAY
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 REGINALD GEORGE MAY filed Critical REGINALD GEORGE MAY
Priority to GB1176047A priority Critical patent/GB646429A/en
Publication of GB646429A publication Critical patent/GB646429A/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)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

646,429. Magnets. MAY, R. G. May 1, 1947, No. 11760. [Class 35] [Also in Groups XXXVIII and XXXIX] A tubular former 14 carrying a stylus holder 16 and supported by resilient arms 25 moves laterally between a core 11 and a semi-circular plate 12 which derive opposite magnetic polarities from a permanent magnet 7. The magnet assembly is secured by non-ferrous plates 18, 19, one plate having an extension 23 to which the resilient arms are secured. The former 14 may be made of a non-magnetic material and supports a winding for the electrical recording or reproduction of sound (see Group XXXIX). Alternatively an iron former may be used, the winding being fitted in a recess in the core 11 as in Fig. 5.
GB1176047A 1947-05-01 1947-05-01 Improvements in or relating to stylus-equipped electro-magnetic devices for the recording and reproduction of sound Expired GB646429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1176047A GB646429A (en) 1947-05-01 1947-05-01 Improvements in or relating to stylus-equipped electro-magnetic devices for the recording and reproduction of sound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1176047A GB646429A (en) 1947-05-01 1947-05-01 Improvements in or relating to stylus-equipped electro-magnetic devices for the recording and reproduction of sound

Publications (1)

Publication Number Publication Date
GB646429A true GB646429A (en) 1950-11-22

Family

ID=9992197

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1176047A Expired GB646429A (en) 1947-05-01 1947-05-01 Improvements in or relating to stylus-equipped electro-magnetic devices for the recording and reproduction of sound

Country Status (1)

Country Link
GB (1) GB646429A (en)

Similar Documents

Publication Publication Date Title
GB662127A (en) Improvements in or relating to magnetic recording
GB559047A (en) Improvements relating to electromagnetic devices and especially to electric telegraph relays
GB636190A (en) Improvements in and relating to phonograph pickups
GB672465A (en) Permanent magnet structure for a loudspeaker
GB602114A (en) Improvements in or relating to electrodynamic pickups
GB646429A (en) Improvements in or relating to stylus-equipped electro-magnetic devices for the recording and reproduction of sound
GB824469A (en) Telephone sub-station including pre-setting means for multiple symbol combinations
GB888632A (en) Improvements in or relating to arrangements for the storage and transmission of signals
JPS5237419A (en) Whole device dynamic speaker
GB775250A (en) A magnetic system with closed magnetic circuit
GB643465A (en) Improvements relating to loudspeakers
GB669458A (en) An improved core for electro-magnets
GB646180A (en) Improvements in electrodynamic recording devices
GB578075A (en) Improvements in magnetic work holders
JPS5225602A (en) Dynamic pickup
GB620166A (en) Improvements relating to electrical vibrometers
GB322813A (en) Improvements in or relating to electrical pick-ups and like reproducing or recordingdevices
GB590669A (en) Improvements in or relating to electric picks-ups
ES469255A1 (en) Improvements in the construction of motors for electroactical transducers (Machine-translation by Google Translate, not legally binding)
GB791070A (en) Induction coil incorporating the ringer
GB634982A (en) Improvements in or relating to frequency-sensitive electrical devices such as vibration galvanometers
GB697239A (en) Improvements in or relating to gramophone pick-ups and recording heads
GB1002128A (en) Improvements in and relating to electric-acoustic transducers
GB663224A (en) Improvements in and relating to permanent magnets
GB674875A (en) Improvements in permanent magnet assemblies for moving coil loudspeakers, microphones and other instruments