GB190924583A - Improvements in or relating to Telephone Receivers. - Google Patents

Improvements in or relating to Telephone Receivers.

Info

Publication number
GB190924583A
GB190924583A GB190924583DA GB190924583A GB 190924583 A GB190924583 A GB 190924583A GB 190924583D A GB190924583D A GB 190924583DA GB 190924583 A GB190924583 A GB 190924583A
Authority
GB
United Kingdom
Prior art keywords
magnet
cup
electro
relating
diaphragm
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
Inventor
Bernard Darwin Willis
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB190924583A publication Critical patent/GB190924583A/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)
  • Battery Mounting, Suspending (AREA)

Abstract

24,583. Willis, B. D. Oct. 28, 1908, [Convention date]. Receivers are constructed with no permanent magnet, the battery current being sent direct through the coils of the diaphragm electro-magnet. The electro-magnet has a central core e and a cup-shaped part e<1>, which may be slit longitudinally. The winding terminals f<5> connect by the posts f<4> f<7> through the insulation F. The electro-magnet core and cup may otherwise be split into halves, and the cup may be carried from a brass standar( connected to the bearing for the diaphragm.
GB190924583D 1908-10-28 1909-10-26 Improvements in or relating to Telephone Receivers. Expired GB190924583A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US190924583XA 1908-10-28 1908-10-28

Publications (1)

Publication Number Publication Date
GB190924583A true GB190924583A (en) 1911-10-19

Family

ID=32470829

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190924583D Expired GB190924583A (en) 1908-10-28 1909-10-26 Improvements in or relating to Telephone Receivers.

Country Status (1)

Country Link
GB (1) GB190924583A (en)

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