GB768736A - Improvements in or relating to magneto bells - Google Patents

Improvements in or relating to magneto bells

Info

Publication number
GB768736A
GB768736A GB3141754A GB3141754A GB768736A GB 768736 A GB768736 A GB 768736A GB 3141754 A GB3141754 A GB 3141754A GB 3141754 A GB3141754 A GB 3141754A GB 768736 A GB768736 A GB 768736A
Authority
GB
United Kingdom
Prior art keywords
magnetic part
holes
yoke
permanent magnet
bells
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
GB3141754A
Inventor
Emanuel Frydman
Henry Evans
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 GB3141754A priority Critical patent/GB768736A/en
Publication of GB768736A publication Critical patent/GB768736A/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)
  • Lock And Its Accessories (AREA)

Abstract

768,736. Electric bells. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. Aug. 25, 1955 [Oct. 30, 1954], No. 31417/54. Class 13. The iron - cored electromagnets 10, 11 and permanent magnet 12 of a magneto bell are mounted on a yoke which is formed by a low-retentivity magnetic plate 14 and a moulded or die-cast non-magnetic part 13 of zinc or aluminium alloy, and pass through aligned holes 24, 25, 26 and 15, 16, 17 in the two components. The electromagnet cores are secured against the yoke by nuts 27, while the permanent magnet, which carries the armature, is adjustably secured to the non- magnetic part 13 by screws 19 which effect a clamping action in association with clearance holes 20, tapped holes 21 and a slot 18. The non-magnetic part, in addition, has tapped holes 23 for mounting the assembly and a recess 22 which permits free movement of the gong striker.
GB3141754A 1954-10-30 1954-10-30 Improvements in or relating to magneto bells Expired GB768736A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3141754A GB768736A (en) 1954-10-30 1954-10-30 Improvements in or relating to magneto bells

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3141754A GB768736A (en) 1954-10-30 1954-10-30 Improvements in or relating to magneto bells

Publications (1)

Publication Number Publication Date
GB768736A true GB768736A (en) 1957-02-20

Family

ID=10322808

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3141754A Expired GB768736A (en) 1954-10-30 1954-10-30 Improvements in or relating to magneto bells

Country Status (1)

Country Link
GB (1) GB768736A (en)

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