GB671160A - Improvements in or relating to mechano-electric transducers - Google Patents

Improvements in or relating to mechano-electric transducers

Info

Publication number
GB671160A
GB671160A GB6245/50A GB624550A GB671160A GB 671160 A GB671160 A GB 671160A GB 6245/50 A GB6245/50 A GB 6245/50A GB 624550 A GB624550 A GB 624550A GB 671160 A GB671160 A GB 671160A
Authority
GB
United Kingdom
Prior art keywords
march
springs
separate
close
mechano
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
GB6245/50A
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 GB671160A publication Critical patent/GB671160A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0051—Transmitting or indicating the displacement of flexible diaphragms using variations in ohmic resistance
    • G01L9/0057—Transmitting or indicating the displacement of flexible diaphragms using variations in ohmic resistance of potentiometers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Adjustable Resistors (AREA)

Abstract

671,160. Microphones; gramophone pickups. WILDHACK, W. A. March 13, 1950 [March 14, 1949], No. 6245/50. Class 40 (iv). [Also in Groups XXXV and XXXVIII] Movements of the diaphram 156 of a microphone, Fig. 14, vary the electrical resistance between points 40, 42 of a spiral tension spring T made of non-uniform stiffness along its length so that certain convolutions will separate (or close) under smaller axial forces than are required to separate (or close) other convolutions. Two such springs T may be axially deflected by the pivoted stylus 166, Fig. 15, of a phonograph pick-up, the electrical variations of one or both springs being used for the output.
GB6245/50A 1949-03-14 1950-03-13 Improvements in or relating to mechano-electric transducers Expired GB671160A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US671160XA 1949-03-14 1949-03-14

Publications (1)

Publication Number Publication Date
GB671160A true GB671160A (en) 1952-04-30

Family

ID=22073805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6245/50A Expired GB671160A (en) 1949-03-14 1950-03-13 Improvements in or relating to mechano-electric transducers

Country Status (1)

Country Link
GB (1) GB671160A (en)

Similar Documents

Publication Publication Date Title
ES8204902A1 (en) Electro-acoustic transducers
GB671160A (en) Improvements in or relating to mechano-electric transducers
GB604077A (en) Improvements in and relating to vibration translating devices
GB823911A (en) Phonograph reproducer
GB776280A (en) Improvements in or relating to moving coil loudspeakers and microphones
GB709902A (en) Improvements in conductor devices having a variable electric resistance
GB919488A (en) Improvements in or relating to pick-ups
US2430476A (en) Phonograph reproducer
Kundert Everything You've Wanted to Know About Measurement Microphones
GB755801A (en) Improvements in or relating to pick-ups comprising two or more record needles which are externally damped
GB685335A (en) Improvements in and relating to phonograph stylus supports
GB927560A (en)
GB738939A (en) Improvements relating to piezo-electric devices
GB909963A (en) Improvements in or relating to twin-channel gramophone transducing devices
GB913420A (en) Improvements in or relating to stereophonic gramophone pick-ups
US1981793A (en) Sound reproducer
GB328497A (en) An electrical sound-box for talking machines
GB1206917A (en) Electroacoustic transducer
US2744583A (en) Apparatus for simulating the sound of a swinging bell
ES107220U (en) Body of furniture tuner and phonographic player, antirresoning and acoustically isolated. (Machine-translation by Google Translate, not legally binding)
JPS54119228A (en) Thin type speaker
ES449787A1 (en) Vibration transmission mechanism for a phonograph
GB726247A (en) Improvements in or relating to acoustic resistors
ES255122A3 (en) Some improvements introduced in the phone-reproductive heads for phonographic devices (Machine-translation by Google Translate, not legally binding)
GB871160A (en) Improvements in and relating to gramophone pick-ups