GB238188A - An alternating current bell - Google Patents

An alternating current bell

Info

Publication number
GB238188A
GB238188A GB11688/25A GB1168825A GB238188A GB 238188 A GB238188 A GB 238188A GB 11688/25 A GB11688/25 A GB 11688/25A GB 1168825 A GB1168825 A GB 1168825A GB 238188 A GB238188 A GB 238188A
Authority
GB
United Kingdom
Prior art keywords
armature
bracket
magnet
slot
hole
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
GB11688/25A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB238188A publication Critical patent/GB238188A/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)
  • Electromagnets (AREA)

Abstract

238,188. Richter, M. B. Aug. 5, 1924, [Convention date]. Bell-operating mechanism, electric. - The armature rocks on the rounded end f of the permanent magnet e to which it is held solely by magnetic attraction. The armature is guided by pins h carried by screws i passing through one limb of a U-shaped non-magnetic bracket d. The pins pass through a hole k and a slot k<1> in the armature and abut against the end of the magnet, the hole and slot being so shaped that only the end of the pins is ever in contact with the armature. The air-gap between the armature and the pole pieces b' of the electromagnets is adjustable by means of the screws j, which move the magnet e, in guides formed by tongues p and by a slot o in the bracket, against a spring q passing through a hole s in the magnet and secured to tongues r on the bracket. The hole s is shaped so that the spring q holds the magnet against the base of the bracket. The ends of the electromagnets remote from the armature are provided with pole pieces b<2> clamped between the cores b and the limb d<2> of the bracket. These pole pieces may rest against the magnet e, or a small air-gap may be left. The striker is carried by a springy rod l. The armature may be biassed by the end x of a helical spring in a hollow screw v. The bracket can be stamped from sheet metal, and is provided with a slot d' for giving access to the leads.
GB11688/25A 1924-08-05 1925-05-05 An alternating current bell Expired GB238188A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE238188X 1924-08-05

Publications (1)

Publication Number Publication Date
GB238188A true GB238188A (en) 1925-12-17

Family

ID=5903455

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11688/25A Expired GB238188A (en) 1924-08-05 1925-05-05 An alternating current bell

Country Status (1)

Country Link
GB (1) GB238188A (en)

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