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GB1089481A - Improvements in or relating to electromagnetic devices - Google Patents

Improvements in or relating to electromagnetic devices

Info

Publication number
GB1089481A
GB1089481A GB66065A GB66065A GB1089481A GB 1089481 A GB1089481 A GB 1089481A GB 66065 A GB66065 A GB 66065A GB 66065 A GB66065 A GB 66065A GB 1089481 A GB1089481 A GB 1089481A
Authority
GB
United Kingdom
Prior art keywords
core
bobbin
armature
jan
aperture
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
GB66065A
Inventor
Albert Edward Judson
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 GB66065A priority Critical patent/GB1089481A/en
Publication of GB1089481A publication Critical patent/GB1089481A/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
    • G10K1/063—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 the sounding member being a bell
    • G10K1/064—Operating or striking mechanisms therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electromagnets (AREA)

Abstract

1,089,481. Bell electromagnets. GENERAL ELECTRIC CO. Ltd. Jan. 6, 1966 [Jan. 6, 1965], No. 660/65. Heading H1P. [Also in Division G5] An electromagnet assembly, e.g. for use with a telephone bell, comprises a core 7 of ferromagnetic material embraced by one or more energizing windings 3, and an armature 2, the windings, core and armature being carried by a bobbin 15 of electrical insulating material, e.g. polymerized formaldehyde acetal resin having two intersecting apertures 18, 19 therethrough, the core comprising two parts of which two limb portions 21 extend into aperture 18 from opposite ends and have projections 22, 23 to retain the core parts in the bobbin with adjacent ends in abutting engagement. A permanent magnet 10 is held in the aperture 19 by frictional engagement with ribs 20. The armature comprises a rectangular plate of mild steel riveted to a frame 25 moulded from the same material as the bobbin and pivoted at 9. Fig. 1 (not shown) illustrates the device together with gongs and a volume control device (33) mounted on the base of a telephone. The control device (33) comprises a lever (34) which alters the position of a spring (36) in relation to a pin (37) carried by hammer head (38).
GB66065A 1965-01-06 1965-01-06 Improvements in or relating to electromagnetic devices Expired GB1089481A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB66065A GB1089481A (en) 1965-01-06 1965-01-06 Improvements in or relating to electromagnetic devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB66065A GB1089481A (en) 1965-01-06 1965-01-06 Improvements in or relating to electromagnetic devices

Publications (1)

Publication Number Publication Date
GB1089481A true GB1089481A (en) 1967-11-01

Family

ID=9708264

Family Applications (1)

Application Number Title Priority Date Filing Date
GB66065A Expired GB1089481A (en) 1965-01-06 1965-01-06 Improvements in or relating to electromagnetic devices

Country Status (1)

Country Link
GB (1) GB1089481A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138211A (en) * 1983-04-13 1984-10-17 Lre Relais & Elektronik Gmbh Magnet apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138211A (en) * 1983-04-13 1984-10-17 Lre Relais & Elektronik Gmbh Magnet apparatus
FR2544501A1 (en) * 1983-04-13 1984-10-19 Lre Relais & Elektronik Gmbh MAGNETIC DEVICE IN PARTICULAR FOR CONTROLLING THE LIMITED ACCELERATION DURING BLOOD CENTRIFUGATION

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