GB226285A - An improved electro-magnetically operated sound producer - Google Patents

An improved electro-magnetically operated sound producer

Info

Publication number
GB226285A
GB226285A GB2355223A GB2355223A GB226285A GB 226285 A GB226285 A GB 226285A GB 2355223 A GB2355223 A GB 2355223A GB 2355223 A GB2355223 A GB 2355223A GB 226285 A GB226285 A GB 226285A
Authority
GB
United Kingdom
Prior art keywords
sound producer
operated sound
magnetically operated
pole pieces
improved electro
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
GB2355223A
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.)
HENRY WILSON PARKER
Original Assignee
HENRY WILSON PARKER
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 HENRY WILSON PARKER filed Critical HENRY WILSON PARKER
Priority to GB2355223A priority Critical patent/GB226285A/en
Publication of GB226285A publication Critical patent/GB226285A/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
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
    • H04R13/02—Telephone receivers

Landscapes

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

Abstract

226,285. Parker, H. W. Sept. 20, 1923. Diaphragm vibrators. - An electromagnetically operated sound producer has a magnetic circuit comprising a bar magnet a having laminated L- shaped pole pieces d spaced away from the magnet a by right-angled pieces c. The pole pieces are secured in position by clamps f. The pole pieces d carry coils h and act on a diaphragm k. Specifications 3047/82, [Class 40, Electric telegraphs &c.], and 199,678, [Class 40 (iv), Telephones &c.], are referred to.
GB2355223A 1923-09-20 1923-09-20 An improved electro-magnetically operated sound producer Expired GB226285A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2355223A GB226285A (en) 1923-09-20 1923-09-20 An improved electro-magnetically operated sound producer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2355223A GB226285A (en) 1923-09-20 1923-09-20 An improved electro-magnetically operated sound producer

Publications (1)

Publication Number Publication Date
GB226285A true GB226285A (en) 1924-12-22

Family

ID=10197499

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2355223A Expired GB226285A (en) 1923-09-20 1923-09-20 An improved electro-magnetically operated sound producer

Country Status (1)

Country Link
GB (1) GB226285A (en)

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