GB293847A - Improvements in or relating to electromagnetic devices for recording sound and reproducing sound from records - Google Patents

Improvements in or relating to electromagnetic devices for recording sound and reproducing sound from records

Info

Publication number
GB293847A
GB293847A GB49628A GB49628A GB293847A GB 293847 A GB293847 A GB 293847A GB 49628 A GB49628 A GB 49628A GB 49628 A GB49628 A GB 49628A GB 293847 A GB293847 A GB 293847A
Authority
GB
United Kingdom
Prior art keywords
casing
magnet
secured
diaphragm
pole
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
GB49628A
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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 claimed from US191012A external-priority patent/US1747829A/en
Priority claimed from US205562A external-priority patent/US1762991A/en
Application filed by Electrical Research Products Inc filed Critical Electrical Research Products Inc
Publication of GB293847A publication Critical patent/GB293847A/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)
  • Dc Machiner (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Moving Of Heads (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Electromagnets (AREA)
GB49628A 1927-05-13 1928-01-06 Improvements in or relating to electromagnetic devices for recording sound and reproducing sound from records Expired GB293847A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US191012A US1747829A (en) 1927-05-13 1927-05-13 Electrical reproducer
US205562A US1762991A (en) 1927-07-14 1927-07-14 Electromagnetic reproducer or recorder

Publications (1)

Publication Number Publication Date
GB293847A true GB293847A (en) 1929-04-08

Family

ID=26886655

Family Applications (4)

Application Number Title Priority Date Filing Date
GB49628A Expired GB293847A (en) 1927-05-13 1928-01-06 Improvements in or relating to electromagnetic devices for recording sound and reproducing sound from records
GB1369828A Expired GB290290A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1927-05-13 1928-01-06
GB835029A Expired GB307847A (en) 1927-05-13 1928-01-06 Improvements in electromagnetic devices
GB49528A Expired GB290264A (en) 1927-05-13 1928-01-06 Improvements in electromagnetic devices for recording sound and reproducing sound from records

Family Applications After (3)

Application Number Title Priority Date Filing Date
GB1369828A Expired GB290290A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1927-05-13 1928-01-06
GB835029A Expired GB307847A (en) 1927-05-13 1928-01-06 Improvements in electromagnetic devices
GB49528A Expired GB290264A (en) 1927-05-13 1928-01-06 Improvements in electromagnetic devices for recording sound and reproducing sound from records

Country Status (3)

Country Link
DE (1) DE573753C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (4) GB293847A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL25222C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Also Published As

Publication number Publication date
GB307847A (en) 1930-05-22
DE573753C (de) 1933-04-05
NL25222C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB290264A (en) 1929-04-08
GB290290A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1929-04-08

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