[go: up one dir, main page]

GB766656A - Improvements in and relating to positioning devices - Google Patents

Improvements in and relating to positioning devices

Info

Publication number
GB766656A
GB766656A GB3636053A GB3636053A GB766656A GB 766656 A GB766656 A GB 766656A GB 3636053 A GB3636053 A GB 3636053A GB 3636053 A GB3636053 A GB 3636053A GB 766656 A GB766656 A GB 766656A
Authority
GB
United Kingdom
Prior art keywords
limbs
centre
head
dec
hole
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
GB3636053A
Inventor
John Arthur Stokes
Murray Monk
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB3636053A priority Critical patent/GB766656A/en
Publication of GB766656A publication Critical patent/GB766656A/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
    • G01D5/2006—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 by influencing the self-induction of one or more coils
    • G01D5/2013—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 by influencing the self-induction of one or more coils by a movable ferromagnetic element, e.g. a core

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

766,656. Electric control systems. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 9, 1954 [Dec. 31, 1953], No. 36360/53. Class 40 (1). A device for aligning, e.g. a machine tool relative to a workpiece in a selected one of a number of predetermined discrete positions comprises a rectangular ferromagnetic bar 1 (Fig. 2), with a series of holes 2, preferably filled with non-magnetic material, and a locally associated electromagnetic head 3 consisting of an E-type core 4 but with two centre limbs 5, having a secondary coil 7 wound on each of the centre limbs connected in series opposition, and an A.C. energized primary winding 6, so that when the head is not symmetrically aligned relative to a hole 2, there is a resultant voltage in the secondary windings which can be utilized in a servo-system to align the two parts accurately. The bar 1 may be provided with further smaller holes into which magnetic plugs may be inserted to adjust the magnetic characteristic associated with each hole. An alternative head (Fig. 5) has three limbs 10, 11, 12 with the coils wound symmetrically on the outer limbs, and the centre limb 11 capped by a rectangular or circular disc 13.
GB3636053A 1953-12-31 1953-12-31 Improvements in and relating to positioning devices Expired GB766656A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3636053A GB766656A (en) 1953-12-31 1953-12-31 Improvements in and relating to positioning devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3636053A GB766656A (en) 1953-12-31 1953-12-31 Improvements in and relating to positioning devices

Publications (1)

Publication Number Publication Date
GB766656A true GB766656A (en) 1957-01-23

Family

ID=10387429

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3636053A Expired GB766656A (en) 1953-12-31 1953-12-31 Improvements in and relating to positioning devices

Country Status (1)

Country Link
GB (1) GB766656A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2325906A1 (en) * 1975-09-25 1977-04-22 Vyzk Vyvojovy Ustav Zavodu ELECTROMAGNETIC PROBE
GB2343517A (en) * 1998-11-06 2000-05-10 Laurence Ross Petrie Displacement measurement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2325906A1 (en) * 1975-09-25 1977-04-22 Vyzk Vyvojovy Ustav Zavodu ELECTROMAGNETIC PROBE
GB2343517A (en) * 1998-11-06 2000-05-10 Laurence Ross Petrie Displacement measurement

Similar Documents

Publication Publication Date Title
GB1039500A (en) Electromagnetic device
GB909023A (en) Magnetic means for indicating the movements and stoppages of movable objects
GB1070068A (en) Improvements in or relating to an electromagnetic actuator
GB738973A (en) Improvements in or relating to electro-magnetic switches
ES8204002A1 (en) Cam-support carriage for a knitting machine
GB766656A (en) Improvements in and relating to positioning devices
GB837899A (en) Improvements in and relating to electrically controlled valves
GB1424986A (en) Electromagnetic device
GB750109A (en) Improvements in or relating to closed magnetic cores for controllable saturable inductors, magnetic amplifiers or like controllable devices
US2285274A (en) Magnetizing apparatus
ES8305965A1 (en) Electromagnetic guiding device
JPS5760814A (en) Leakage flux instrument with winding
GB880913A (en) Yarn tensioning device
GB1514161A (en) Inductor device
GB948436A (en) Improvements relating to control devices for alternating electric current circuits
GB554384A (en) Improvements relating to cores for electric transformers and chokes
FR2331877A1 (en) Sensitive electromagnetic relay with two iron cores - has permanent magnet between cores and has control coil forming flat structure
GB905350A (en) Improvements in and relating to ferro-resonant bi-stable electric circuit arrangements
GB341903A (en) Improvements in and relating to the regulation of the voltage of a power supply system or other a.c. circuit
GB1089954A (en) Improvements relating to electrical inductance devices
GB960423A (en) Improvements in or relating to electromagnetic measuring coils
GB745416A (en) Improvements in or relating to apparatus for detecting the presence or absence of a conducting or magnetic object
GB658938A (en) Improved variable inductance coil
GB903652A (en) Improvements in or relating to relaxation oscillator circuits
GB929000A (en) Improvements in or relating to variable electrical inductor devices