GB744700A - Improvements in or relating to signalling devices - Google Patents

Improvements in or relating to signalling devices

Info

Publication number
GB744700A
GB744700A GB2217953A GB2217953A GB744700A GB 744700 A GB744700 A GB 744700A GB 2217953 A GB2217953 A GB 2217953A GB 2217953 A GB2217953 A GB 2217953A GB 744700 A GB744700 A GB 744700A
Authority
GB
United Kingdom
Prior art keywords
rotor
gong
hammer
stator
gongs
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
GB2217953A
Inventor
Sydney Ernest Frank Burston
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
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 Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Priority to GB2217953A priority Critical patent/GB744700A/en
Publication of GB744700A publication Critical patent/GB744700A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K1/00—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs
    • G10K1/06—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube
    • G10K1/062—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube electrically operated

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Pinball Game Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Electromagnets (AREA)

Abstract

744,700. Electric bells. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. May 12, 1954 [Aug. 12, 1953], No. 22179/53. Class 13 A telephone bell or the like comprises a wound two - pole stator and an unwound twopole rotor carrying a hammer, the rotor being pivoted centrally between the pole pieces of the stator so as to be capable of limited rotation in order to bring tne hammer into contact with a gong or gongs. As shown, the stator coil 22 is wound on one limb of a plane U-shaped core 10 to which is secured a bracket 38 carrying a gong 39. The rotor 27 is mounted on bearing plates held between the limbs of the core 10 and carries a hammer 30. For use with alternating current the bell has a permanent magnet in the rotor and either one or two gongs, whereas for direct current the rotor contains a soft iron yoke and is arranged to operate an interrupter contact, Fig. 5 (not shown), there being only one gong in this case.
GB2217953A 1953-08-12 1953-08-12 Improvements in or relating to signalling devices Expired GB744700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2217953A GB744700A (en) 1953-08-12 1953-08-12 Improvements in or relating to signalling devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2217953A GB744700A (en) 1953-08-12 1953-08-12 Improvements in or relating to signalling devices

Publications (1)

Publication Number Publication Date
GB744700A true GB744700A (en) 1956-02-15

Family

ID=10175232

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2217953A Expired GB744700A (en) 1953-08-12 1953-08-12 Improvements in or relating to signalling devices

Country Status (1)

Country Link
GB (1) GB744700A (en)

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