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GB602946A - Improvements in tone generators - Google Patents

Improvements in tone generators

Info

Publication number
GB602946A
GB602946A GB3022745A GB3022745A GB602946A GB 602946 A GB602946 A GB 602946A GB 3022745 A GB3022745 A GB 3022745A GB 3022745 A GB3022745 A GB 3022745A GB 602946 A GB602946 A GB 602946A
Authority
GB
United Kingdom
Prior art keywords
magnet
jones
gaps
periphery
face
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
GB3022745A
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.)
HAROLD HOSGOOD JONES
WALTER JONES AND CO ENGINEERS
Original Assignee
HAROLD HOSGOOD JONES
WALTER JONES AND CO ENGINEERS
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 HAROLD HOSGOOD JONES, WALTER JONES AND CO ENGINEERS filed Critical HAROLD HOSGOOD JONES
Priority to GB3022745A priority Critical patent/GB602946A/en
Publication of GB602946A publication Critical patent/GB602946A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

602,946. Machines with permanent magnets. JONES & CO. (ENGINEERS), Ltd., W., and JONES, H. H. Nov. 12, 1945, No. 30227. [Class 35] [Also in Group XXXIX] The stator of a tone generator comprises a number of oppositely disposed pairs of coils, such as 13, 13<SP>1</SP>, 14, 14<SP>1</SP>, arranged so that the phase produced by each pair of coils consists of oscillations separated by idle periods, the oscillations of each phase falling on the idle periods of the others. The rotor comprises an annular permanent magnet 1 magnetized axially. To one face of the magnet is attached a soft iron cup-shaped member 5 with gaps 6 in its periphery at opposite ends of a diameter. To the other face is attached a thicker soft iron member 8 with pole pieces 9 extending across the periphery of the magnet in the gaps 6.
GB3022745A 1945-11-12 1945-11-12 Improvements in tone generators Expired GB602946A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3022745A GB602946A (en) 1945-11-12 1945-11-12 Improvements in tone generators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3022745A GB602946A (en) 1945-11-12 1945-11-12 Improvements in tone generators

Publications (1)

Publication Number Publication Date
GB602946A true GB602946A (en) 1948-06-07

Family

ID=10304291

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3022745A Expired GB602946A (en) 1945-11-12 1945-11-12 Improvements in tone generators

Country Status (1)

Country Link
GB (1) GB602946A (en)

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