GB222208A - An improved loud speaker for wireless apparatus - Google Patents

An improved loud speaker for wireless apparatus

Info

Publication number
GB222208A
GB222208A GB1668323A GB1668323A GB222208A GB 222208 A GB222208 A GB 222208A GB 1668323 A GB1668323 A GB 1668323A GB 1668323 A GB1668323 A GB 1668323A GB 222208 A GB222208 A GB 222208A
Authority
GB
United Kingdom
Prior art keywords
loud speaker
connecting links
wireless apparatus
pieces
laminated
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
GB1668323A
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 GB1668323A priority Critical patent/GB222208A/en
Publication of GB222208A publication Critical patent/GB222208A/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

222,208. Parker, H. W. June 27, 1923. Telephones.-The magnet system of a telephone receiver comprises permanent magnets d, laminated connecting links b<1> and laminated pole-pieces b. As shown, two bar magnets d of rectangular section have the ends bevelled to fit notches in the connecting links b<1>. The L-shaped pole-pieces b and the connecting links are secured bv clamping plates a held down by screws c.
GB1668323A 1923-06-27 1923-06-27 An improved loud speaker for wireless apparatus Expired GB222208A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1668323A GB222208A (en) 1923-06-27 1923-06-27 An improved loud speaker for wireless apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1668323A GB222208A (en) 1923-06-27 1923-06-27 An improved loud speaker for wireless apparatus

Publications (1)

Publication Number Publication Date
GB222208A true GB222208A (en) 1924-09-29

Family

ID=10081749

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1668323A Expired GB222208A (en) 1923-06-27 1923-06-27 An improved loud speaker for wireless apparatus

Country Status (1)

Country Link
GB (1) GB222208A (en)

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