GB666824A - Improvements in or relating to measuring apparatus - Google Patents

Improvements in or relating to measuring apparatus

Info

Publication number
GB666824A
GB666824A GB2611849A GB2611849A GB666824A GB 666824 A GB666824 A GB 666824A GB 2611849 A GB2611849 A GB 2611849A GB 2611849 A GB2611849 A GB 2611849A GB 666824 A GB666824 A GB 666824A
Authority
GB
United Kingdom
Prior art keywords
pole
differentially
measuring apparatus
pieces
airgaps
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
GB2611849A
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.)
SIGMA INSTR CO Ltd
Original Assignee
SIGMA INSTR 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 SIGMA INSTR CO Ltd filed Critical SIGMA INSTR CO Ltd
Priority to GB2611849A priority Critical patent/GB666824A/en
Publication of GB666824A publication Critical patent/GB666824A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/22—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
    • G01D5/2208—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the self-induction of the coils
    • G01D5/2216—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the self-induction of the coils by a movable ferromagnetic element, e.g. a core

Abstract

666,824. Electric measuring apparatus. SIGMA INSTRUMENT CO., Ltd., BOOSEY, F. R., and HAMILTON, J. H. Oct. 11, 1950. [Oct. 11, 1949] No. 26118/49. Class 40 (i). A differentially variable inductance for use in measuring apparatus comprises two magnetic yokes 1, 5, each having three pole-pieces forming three co-operating polepairs. The yokes are secured together e.g. by lath springs 8, 10 permitting lateral rectilinear movement of one yoke relative to the other, by the variable being measured. Such movements vary the airgaps 11, 12 differentially by virtue of the opposite obliquity of the corresponding pole-faces, the gap 13 remaining substantially unchanged. The cross-sectional areas of the three gaps are maintained substantially constant by making the pole-pieces (i, 7, 8 of greater sectional area than the corresponding pole-pieces on yoke 1. Coils surround the pole-pairs 2, 7 and 3, 6 the inductance of these coils varying differentially with the corresponding airgaps. Specification 616,978 is referred to.
GB2611849A 1949-10-11 1949-10-11 Improvements in or relating to measuring apparatus Expired GB666824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2611849A GB666824A (en) 1949-10-11 1949-10-11 Improvements in or relating to measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2611849A GB666824A (en) 1949-10-11 1949-10-11 Improvements in or relating to measuring apparatus

Publications (1)

Publication Number Publication Date
GB666824A true GB666824A (en) 1952-02-20

Family

ID=10238654

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2611849A Expired GB666824A (en) 1949-10-11 1949-10-11 Improvements in or relating to measuring apparatus

Country Status (1)

Country Link
GB (1) GB666824A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132771A (en) * 1982-12-30 1984-07-11 Owens Illinois Inc Position sensing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132771A (en) * 1982-12-30 1984-07-11 Owens Illinois Inc Position sensing device

Similar Documents

Publication Publication Date Title
GB666824A (en) Improvements in or relating to measuring apparatus
GB523412A (en) Improvements in or relating to electro-magnetic vibrational devices
GB1487574A (en) Teaching aid
GB759041A (en) Improvements in or relating to apparatus for measuring mechanical quantities
GB767424A (en) Improvements relating to acceleration-measuring or vibration-measuring apparatus
Kato et al. Corrected Paper on the Phase Difference of Earth Current Induced by the Charges of the Earth's Magnetic Field.
GB634982A (en) Improvements in or relating to frequency-sensitive electrical devices such as vibration galvanometers
GB661442A (en) Improvements in or relating to transmitter units for electrical movement-transmitting systems
GB505242A (en) Improvements in or relating to electric apparatus for measuring small movements
GB513302A (en) Improvements relating to permanent magnets
GB591204A (en) Improvements relating to electromagnetic telephone instruments
GB667222A (en) Improvements in or relating to apparatus for transmitting indications or movements to a distance
CA496545A (en) Magnetic field strength indicator
GB320079A (en) A device for the transmission of measuring movements from a completely closed space
CA494309A (en) Electric regulators of the carbon pile type
CA485697A (en) Electromagnetic deflection yoke
GB253080A (en) Telephone instrument
GB685411A (en) A reciprocating motor
FR1019537A (en) Improvements in indicating devices, direction transmitters and in particular, magnetic compasses and their compensation
AU860746A (en) Apparatus for responding to magnetic fields. 1
GB654554A (en) Improvements in or relating to electrical measuring instruments
CA447130A (en) Frictionless suspension means for the movable system of measuring devices
CA432929A (en) Measuring instrument compensating system
CA491747A (en) Materials having improved magnetic properties
GB602661A (en) Improvements in or relating to gramophone pick-ups