GB287986A - Improvements in or relating to electric buzzers and interrupters - Google Patents

Improvements in or relating to electric buzzers and interrupters

Info

Publication number
GB287986A
GB287986A GB188227A GB188227A GB287986A GB 287986 A GB287986 A GB 287986A GB 188227 A GB188227 A GB 188227A GB 188227 A GB188227 A GB 188227A GB 287986 A GB287986 A GB 287986A
Authority
GB
United Kingdom
Prior art keywords
armature
pillar
block
insulated
screws
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
GB188227A
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
Priority to GB188227A priority Critical patent/GB287986A/en
Publication of GB287986A publication Critical patent/GB287986A/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)
  • Telephone Set Structure (AREA)

Abstract

287,986. Brockies, A. C. Jan. 21, 1927. Electromagnetic interrupter.- A buzzer or interrupter, for producing warning sounds and especially applicable for telephone calling purposes, comprises a contact carried by an armature pivoted intermediate its length and acted on by an adjustable tuning spring to one side of the pivot and at the opposite side by an electromagnet. The core of the coil 5 and a terminal pillar 1a are clamped between a plate 3 and angle support 2 by a tension screw 4, removal of which allows these parts to be disassembled. The parts 1a, 2, 3 are non- magnetic. The armature 6 is secured by rivets 8 to a flat spring 77, the rivet heads bearing against the support 2 and constituting the armature pivots. Tuning and contact springs 11, 12, respectively, are secured as by screws 13 to bosses or on washers 14 on the armature, and cooperate with screws 15, 16 which can be adjustably locked, upon blocks 17, 18. The block 17, the main frame, and terminal block 24 are insulated from the base, and one end of coil 5 is connected by lead 20 to the pillar 1a, whereas the other end 23 is insulated from the pillar and connected to the block 24.
GB188227A 1927-01-21 1927-01-21 Improvements in or relating to electric buzzers and interrupters Expired GB287986A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB188227A GB287986A (en) 1927-01-21 1927-01-21 Improvements in or relating to electric buzzers and interrupters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB188227A GB287986A (en) 1927-01-21 1927-01-21 Improvements in or relating to electric buzzers and interrupters

Publications (1)

Publication Number Publication Date
GB287986A true GB287986A (en) 1928-04-05

Family

ID=9729701

Family Applications (1)

Application Number Title Priority Date Filing Date
GB188227A Expired GB287986A (en) 1927-01-21 1927-01-21 Improvements in or relating to electric buzzers and interrupters

Country Status (1)

Country Link
GB (1) GB287986A (en)

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