GB201985A - Improved electrical means for indicating, measuring, and/or recording small movements and vibrations of solid bodies - Google Patents

Improved electrical means for indicating, measuring, and/or recording small movements and vibrations of solid bodies

Info

Publication number
GB201985A
GB201985A GB1215222A GB1215222A GB201985A GB 201985 A GB201985 A GB 201985A GB 1215222 A GB1215222 A GB 1215222A GB 1215222 A GB1215222 A GB 1215222A GB 201985 A GB201985 A GB 201985A
Authority
GB
United Kingdom
Prior art keywords
coil
resistance
galvanometer
potential
circuit including
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
GB1215222A
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.)
HORACE AUGUSTUS THOMAS
Original Assignee
HORACE AUGUSTUS THOMAS
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 HORACE AUGUSTUS THOMAS filed Critical HORACE AUGUSTUS THOMAS
Priority to GB1215222A priority Critical patent/GB201985A/en
Publication of GB201985A publication Critical patent/GB201985A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

201,985. Thomas, H. A. May 1, 1922. Thermionic relays.-Small movements and vibrations of solid bodies are measured by a highfrequency oscillating circuit including a generator such as a thermionic valve and its attendant circuit, in which the influence on the anode current of a vibrating metallic body in the field of an inductance coil is utilized to effect the operation of an indicating, measuring, or recording apparatus. A triode valve d with filament accumulator q and regulating-resistance r is connected up as shown with a non-inductive resistance c and high-tension battery t, and with an oscillating circuit including an inductance coil a and condenser b. To the ends of the resistance c is coupled up an auxiliary circuit including a non-inductive resistance e and a galvanometer of the D'Arsonval or Einthoven string type, having a shunt m. Applied to the ends of the resistance e is an electrical potential difference by means of the regulating potential divider h, battery s, and rheostat j. In practice, the coil a is mounted on an ebonite bobbin secured to a resilient plate 9 fixed to a support 3, which may be adjusted vertically on a pillar. The end 8 of a micrometer screw 6 with a graduated head 7 engages the plate 9. The body p to be examined is mounted near the coil a, and, if non-metallic, a small metal plate or a short-circuited coil of a few turns is clamped to it, but must be of such nature as not to interfere to any appreciable, extent with the natural period of vibration of the body. The valve is started oscillating, and the potential across the coil e adjusted until the potential at f and g is the same, this being indicated by no deflection of the galvanometer. The body p is set vibrating, and this causes a record to be made by the galvanometer. By moving the coil a through a definite distance by means of the micrometer screw and noting the displacement of the record, a calibration is effected.
GB1215222A 1922-05-01 1922-05-01 Improved electrical means for indicating, measuring, and/or recording small movements and vibrations of solid bodies Expired GB201985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1215222A GB201985A (en) 1922-05-01 1922-05-01 Improved electrical means for indicating, measuring, and/or recording small movements and vibrations of solid bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1215222A GB201985A (en) 1922-05-01 1922-05-01 Improved electrical means for indicating, measuring, and/or recording small movements and vibrations of solid bodies

Publications (1)

Publication Number Publication Date
GB201985A true GB201985A (en) 1923-08-01

Family

ID=9999287

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1215222A Expired GB201985A (en) 1922-05-01 1922-05-01 Improved electrical means for indicating, measuring, and/or recording small movements and vibrations of solid bodies

Country Status (1)

Country Link
GB (1) GB201985A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754678A (en) * 1952-04-22 1956-07-17 Gen Mills Inc Vibration tester
US2796756A (en) * 1954-09-30 1957-06-25 Wilfred A Yates Vibration calibrator
US2915896A (en) * 1955-12-01 1959-12-08 Gen Motors Corp Torsiograph
US3263167A (en) * 1962-10-04 1966-07-26 Reliance Electric & Eng Co Apparatus for measuring the non-linear dimension of a workpiece

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754678A (en) * 1952-04-22 1956-07-17 Gen Mills Inc Vibration tester
US2796756A (en) * 1954-09-30 1957-06-25 Wilfred A Yates Vibration calibrator
US2915896A (en) * 1955-12-01 1959-12-08 Gen Motors Corp Torsiograph
US3263167A (en) * 1962-10-04 1966-07-26 Reliance Electric & Eng Co Apparatus for measuring the non-linear dimension of a workpiece

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