[go: up one dir, main page]

GB636563A - Improvements in and relating to electrically maintained tuning forks - Google Patents

Improvements in and relating to electrically maintained tuning forks

Info

Publication number
GB636563A
GB636563A GB2602147A GB2602147A GB636563A GB 636563 A GB636563 A GB 636563A GB 2602147 A GB2602147 A GB 2602147A GB 2602147 A GB2602147 A GB 2602147A GB 636563 A GB636563 A GB 636563A
Authority
GB
United Kingdom
Prior art keywords
fork
tuning
pole
relating
electrically
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
GB2602147A
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.)
Muirhead and Co Ltd
Original Assignee
Muirhead and 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 Muirhead and Co Ltd filed Critical Muirhead and Co Ltd
Priority to GB2602147A priority Critical patent/GB636563A/en
Publication of GB636563A publication Critical patent/GB636563A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H3/00—Instruments in which the tones are generated by electromechanical means
    • G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
    • G10H3/22—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using electromechanically actuated vibrators with pick-up means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Magnetic Treatment Devices (AREA)

Abstract

636,563. Tuning-forks. MUIRHEAD & CO., Ltd., TUCKER, E. W., and BELL, J. Sept. 25, 1947, No. 26021. [Class 88 (ii)] An electrically-maintained tuning-fork is provided with means for regulating the air-gap between the tines of the fork and the pole or poles of the maintaining magnet. A tuning- fork 2 is supported in a pot 1 and its tines 3 are subjected to vibrations by permanent magnet 6 having electrically energized pole-pieces 4 to vary the frequency of vibration. The left-hand pole-piece is adjustable by a cam 10 rotated by a graduated wheel 13 supported by bimetallic strips 16 which compensate for variations in temperature. The device may be used with a pick-up magnet system feeding an amplifier connected to the energizing magnets.
GB2602147A 1947-09-25 1947-09-25 Improvements in and relating to electrically maintained tuning forks Expired GB636563A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2602147A GB636563A (en) 1947-09-25 1947-09-25 Improvements in and relating to electrically maintained tuning forks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2602147A GB636563A (en) 1947-09-25 1947-09-25 Improvements in and relating to electrically maintained tuning forks

Publications (1)

Publication Number Publication Date
GB636563A true GB636563A (en) 1950-05-03

Family

ID=10237112

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2602147A Expired GB636563A (en) 1947-09-25 1947-09-25 Improvements in and relating to electrically maintained tuning forks

Country Status (1)

Country Link
GB (1) GB636563A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091151A (en) * 1960-11-18 1963-05-28 John A Cunningham Electromechanical oscillators
DE1213869B (en) * 1962-08-10 1966-04-07 Erich Herion Cooling water regulator for refrigeration systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091151A (en) * 1960-11-18 1963-05-28 John A Cunningham Electromechanical oscillators
DE1213869B (en) * 1962-08-10 1966-04-07 Erich Herion Cooling water regulator for refrigeration systems

Similar Documents

Publication Publication Date Title
GB677225A (en) Improvements in or relating to electro-acoustic transducers
GB636563A (en) Improvements in and relating to electrically maintained tuning forks
GB654903A (en) Magnetostrictive signal-delay arrangement
GB212857A (en) Improvements in sound emitting apparatus such as telephone receivers
GB1164307A (en) Magnets.
GB598963A (en) Improvements in and relating to electro-mechanical tuning forks
JPS5538733A (en) Bone conduction hearing aid
GB634982A (en) Improvements in or relating to frequency-sensitive electrical devices such as vibration galvanometers
GB644948A (en) Improvements in or relating to mechanical oscillating elements with magnetic torsioncontrol
GB578075A (en) Improvements in magnetic work holders
GB517572A (en) Improvements in or relating to electro-magnetic switches or the like
GB324608A (en) Improvements relating to loud speakers
GB387127A (en) Improvements in loud-speakers
GB1125364A (en) Tuning fork vibrators or similar reed-type vibrators
GB616763A (en) Improvements in or relating to telephone instruments and apparatus
GB806428A (en) Improvements in or relating to polarized electromagnetic devices
GB664812A (en) Improvements in or relating to loudspeakers
GB654902A (en) Magnetostrictive time-delay device
GB204023A (en) Improvements in and relating to loud-speaking apparatus
GB284597A (en) Apparatus for detecting shocks in a moving mechanism
GB227560A (en) Improvements in telephone receivers and the like
GB587089A (en) Improvements relating to electro-magnetic switches
GB562339A (en) Improvements in or relating to electromagnetic relays
GB625017A (en) Improvements in or relating to electromagnetic interruptors or vibrators
GB877272A (en) Improvements in or relating to electromagnetic interrupter devices