GB780740A - Improvements in or relating to electric buzzers, bells and the like apparatus - Google Patents

Improvements in or relating to electric buzzers, bells and the like apparatus

Info

Publication number
GB780740A
GB780740A GB1623454A GB1623454A GB780740A GB 780740 A GB780740 A GB 780740A GB 1623454 A GB1623454 A GB 1623454A GB 1623454 A GB1623454 A GB 1623454A GB 780740 A GB780740 A GB 780740A
Authority
GB
United Kingdom
Prior art keywords
electromagnet
armature
bell
bells
relating
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
GB1623454A
Inventor
Frank Cottis
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1623454A priority Critical patent/GB780740A/en
Publication of GB780740A publication Critical patent/GB780740A/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
    • 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
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

780,740. Electromagnetic interrupters. GENERAL ELECTRIC CO., Ltd. June 1, 1955 [June 1, 1954], No. 16234/54. Class 38 (5). [Also in Groups XXXV and XXXVIII] In a bell, buzzer, or the like an electromagnet 3 having a spring - loaded armature 11 is pivotally mounted on a base-plate 1 which carries a fixed abutment 13 against which the armature 11 rests. In the embodiment the electromagnet is pivotally mounted at 7 on an ear 6 and is adjustably secured by a screw 8 on an ear 5 in an arcuate slot 10. By adjusting the position of the electromagnet the distance over which the armature 11 travels is varied. To form the clapper of a bell the armature 11 may have an extended end 20 to engage a projection 21 of a bell 18. The electromagnet may be supplied with A.C. or D.C.
GB1623454A 1954-06-01 1954-06-01 Improvements in or relating to electric buzzers, bells and the like apparatus Expired GB780740A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1623454A GB780740A (en) 1954-06-01 1954-06-01 Improvements in or relating to electric buzzers, bells and the like apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1623454A GB780740A (en) 1954-06-01 1954-06-01 Improvements in or relating to electric buzzers, bells and the like apparatus

Publications (1)

Publication Number Publication Date
GB780740A true GB780740A (en) 1957-08-07

Family

ID=10073609

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1623454A Expired GB780740A (en) 1954-06-01 1954-06-01 Improvements in or relating to electric buzzers, bells and the like apparatus

Country Status (1)

Country Link
GB (1) GB780740A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2191625A (en) * 1986-05-16 1987-12-16 Seikosha Kk Electromagnetic bell unit and method of making the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2191625A (en) * 1986-05-16 1987-12-16 Seikosha Kk Electromagnetic bell unit and method of making the same
GB2191625B (en) * 1986-05-16 1990-08-22 Seikosha Kk Electromagnetic bell unit

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