GB405991A - Improvements in moving coil loud speakers - Google Patents

Improvements in moving coil loud speakers

Info

Publication number
GB405991A
GB405991A GB2263032A GB2263032A GB405991A GB 405991 A GB405991 A GB 405991A GB 2263032 A GB2263032 A GB 2263032A GB 2263032 A GB2263032 A GB 2263032A GB 405991 A GB405991 A GB 405991A
Authority
GB
United Kingdom
Prior art keywords
secured
pole
soft iron
loud
moving coil
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
GB2263032A
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.)
ALFRED HAROLD WHITELEY
Original Assignee
ALFRED HAROLD WHITELEY
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 ALFRED HAROLD WHITELEY filed Critical ALFRED HAROLD WHITELEY
Priority to GB2263032A priority Critical patent/GB405991A/en
Publication of GB405991A publication Critical patent/GB405991A/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
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/024—Manufacturing aspects of the magnetic circuit of loudspeaker or microphone transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts

Landscapes

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

Abstract

405,991. Loud-speakers. WHITELEY, A. H., Radio Works, Victoria Street, Mansfield, Nottingham. Aug. 12, 1932, No. 22630. [Class 40 (iv).] Relates to a permanent magnet structure of the M, claw or bar type for a moving- coil loud-speaker and consists in making the central cylindrical pole piece of higher retentivity than the remainder of the magnetic circuit. As shown, the structure comprises a U -shaped member 1 bent from a bar of soft iron across the ends of which is secured a soft iron outer pole-piece 2. The cylindrical centre pole 3 of permanently and highly magnetized material is secured at one end by a bolt 5 to the member 1, its reduced opposite end projecting into an aperture 6 in the plate 2.
GB2263032A 1932-08-12 1932-08-12 Improvements in moving coil loud speakers Expired GB405991A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2263032A GB405991A (en) 1932-08-12 1932-08-12 Improvements in moving coil loud speakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2263032A GB405991A (en) 1932-08-12 1932-08-12 Improvements in moving coil loud speakers

Publications (1)

Publication Number Publication Date
GB405991A true GB405991A (en) 1934-02-12

Family

ID=10182533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2263032A Expired GB405991A (en) 1932-08-12 1932-08-12 Improvements in moving coil loud speakers

Country Status (1)

Country Link
GB (1) GB405991A (en)

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