GB839996A - Pneumatic servo system - Google Patents

Pneumatic servo system

Info

Publication number
GB839996A
GB839996A GB1215257A GB1215257A GB839996A GB 839996 A GB839996 A GB 839996A GB 1215257 A GB1215257 A GB 1215257A GB 1215257 A GB1215257 A GB 1215257A GB 839996 A GB839996 A GB 839996A
Authority
GB
United Kingdom
Prior art keywords
head
bellows
test
piece
pipe
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
GB1215257A
Inventor
Bernard Thompson
James Hale
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.)
TI Group Services Ltd
Original Assignee
TI Group Services 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 TI Group Services Ltd filed Critical TI Group Services Ltd
Priority to GB1215257A priority Critical patent/GB839996A/en
Publication of GB839996A publication Critical patent/GB839996A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/9093—Arrangements for supporting the sensor; Combinations of eddy-current sensors and auxiliary arrangements for marking or for rejecting

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measuring Arrangements Characterized By The Use Of Fluids (AREA)

Abstract

839,996. Pneumatic gauging-apparatus. T.I. (GROUP SERVICES) Ltd. April 11, 1958 [April 13, 1957], No. 12152/57. Class 106 (2). [Also in Group XXXVI] In a gauging device, a measuring head is maintained at a predetermined distance from the test piece by the operation of a pneumatic servo system. As shown, Fig. 1, a source of air pressure is supplied via a pipe 10 and symmetrical branch pipes 11, 12, containing constrictions 13, 14, to the interiors of bellows 15, 16, the pressure in bellows 15 being reduced by the flow of air through a flexible pipe 17, out of an orifice 18 in the measuring head 2 to impinge upon the test-piece 1. Any deviation from a predetermined distance A between head and test-piece alters the pressure in bellows 15, and a bell-crank lever 4, which is responsive to the difference in the pressures in bellows 15, 16, moves the head 2 to restore the predetermined spacing A, the value of which is set by adjusting the distance B between an orifice 19 in the pipe to bellows 16, and a plate 20. The displacement of the head 2 is indicative of the profile of the test-piece, and may be indicated by a pointer, or electrically from a transducer (not shown) moving with the head. Fig. 2 depicts a similar device in which the measuring head 2 is mounted on the shaft of a piston 23 responsive to the difference in pressures in chambers 15, 16.
GB1215257A 1957-04-13 1957-04-13 Pneumatic servo system Expired GB839996A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1215257A GB839996A (en) 1957-04-13 1957-04-13 Pneumatic servo system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1215257A GB839996A (en) 1957-04-13 1957-04-13 Pneumatic servo system

Publications (1)

Publication Number Publication Date
GB839996A true GB839996A (en) 1960-06-29

Family

ID=9999299

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1215257A Expired GB839996A (en) 1957-04-13 1957-04-13 Pneumatic servo system

Country Status (1)

Country Link
GB (1) GB839996A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3433855A (en) * 1966-11-15 1969-03-18 Eastman Kodak Co Propylene-diolefinic hydrocarbon block copolymers and process for preparing same
DE2111213A1 (en) * 1970-03-11 1971-09-30 Zumbach Electronic Automatic Method and device for non-contact measurement of a layer thickness
DE2357388A1 (en) * 1972-11-17 1974-05-22 Sumitomo Light Metal Ind METHOD AND DEVICE FOR MEASURING THE FLATNESS OF SHEETS AND BANDS RN
US3854322A (en) * 1973-06-06 1974-12-17 Lfe Corp Caliper gauge
JPS50140155A (en) * 1974-04-27 1975-11-10
FR2425070A1 (en) * 1977-05-10 1979-11-30 Setim Detection and analysis of surface faults on product - is determined from servo controlled detector suspended above surface
DE3002667A1 (en) * 1979-01-30 1980-07-31 Per Roode Berglund SELF-STABILIZING PNEUMATIC POSITIONER
DE3039532A1 (en) * 1980-09-15 1982-05-06 Gebrüder Bühler AG, 9240 Uzwil METHOD AND DEVICE FOR MEASURING THE THICKNESS OF THE PRODUCT LAYER ON A ROLL OF A ROLLING MILL FOR FINE GRINDING
EP0078095A2 (en) * 1981-10-26 1983-05-04 AccuRay Corporation Measuring system improvements
EP0081243A2 (en) * 1981-12-08 1983-06-15 Bethlehem Steel Corporation Articulated test probe mechanism with fluid bearing in roll gap
EP0081244A2 (en) * 1981-12-08 1983-06-15 Bethlehem Steel Corporation Automatic nondestructive roll defect inspection system
GB2137362A (en) * 1983-04-01 1984-10-03 Gen Electric Bracket for an eddy current probe
US4528507A (en) * 1981-10-26 1985-07-09 Accuray Corporation Sheet measuring apparatus with two structurally isolated non-contacting surface follower bodies and wireless signal transmission
GB2438944B (en) * 2006-05-15 2009-07-22 Immobilienges Helmut Fischer Method and apparatus for measurement of the thickness of thin films by means of a measurement probe

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3433855A (en) * 1966-11-15 1969-03-18 Eastman Kodak Co Propylene-diolefinic hydrocarbon block copolymers and process for preparing same
DE2111213A1 (en) * 1970-03-11 1971-09-30 Zumbach Electronic Automatic Method and device for non-contact measurement of a layer thickness
DE2357388A1 (en) * 1972-11-17 1974-05-22 Sumitomo Light Metal Ind METHOD AND DEVICE FOR MEASURING THE FLATNESS OF SHEETS AND BANDS RN
US3854322A (en) * 1973-06-06 1974-12-17 Lfe Corp Caliper gauge
JPS50140155A (en) * 1974-04-27 1975-11-10
FR2425070A1 (en) * 1977-05-10 1979-11-30 Setim Detection and analysis of surface faults on product - is determined from servo controlled detector suspended above surface
DE3002667A1 (en) * 1979-01-30 1980-07-31 Per Roode Berglund SELF-STABILIZING PNEUMATIC POSITIONER
DE3039532A1 (en) * 1980-09-15 1982-05-06 Gebrüder Bühler AG, 9240 Uzwil METHOD AND DEVICE FOR MEASURING THE THICKNESS OF THE PRODUCT LAYER ON A ROLL OF A ROLLING MILL FOR FINE GRINDING
US4528507A (en) * 1981-10-26 1985-07-09 Accuray Corporation Sheet measuring apparatus with two structurally isolated non-contacting surface follower bodies and wireless signal transmission
US4450404A (en) * 1981-10-26 1984-05-22 Accuray Corporation Pneumatic surface follower with negative feedback of a variable force counteracting the levitating force
EP0078095A2 (en) * 1981-10-26 1983-05-04 AccuRay Corporation Measuring system improvements
EP0078095A3 (en) * 1981-10-26 1986-05-28 Accuray Corporation Measuring system improvements
EP0081243A2 (en) * 1981-12-08 1983-06-15 Bethlehem Steel Corporation Articulated test probe mechanism with fluid bearing in roll gap
EP0081244A2 (en) * 1981-12-08 1983-06-15 Bethlehem Steel Corporation Automatic nondestructive roll defect inspection system
EP0081244A3 (en) * 1981-12-08 1984-03-14 Bethlehem Steel Corporation Automatic nondestructive roll defect inspection system
EP0081243A3 (en) * 1981-12-08 1984-03-14 Bethlehem Steel Corporation Articulated test probe mechanism with fluid bearing in roll gap
GB2137362A (en) * 1983-04-01 1984-10-03 Gen Electric Bracket for an eddy current probe
GB2176298A (en) * 1983-04-01 1986-12-17 Gen Electric Bracket for an eddy current probe
GB2438944B (en) * 2006-05-15 2009-07-22 Immobilienges Helmut Fischer Method and apparatus for measurement of the thickness of thin films by means of a measurement probe
US7690243B2 (en) 2006-05-15 2010-04-06 Immobiliengesellschaft Helmut Fischer Gmbh & Co. Kg Method and apparatus for measurement of the thickness of thin layers by means of measurement probe
DE102006022882B4 (en) * 2006-05-15 2016-04-14 Immobiliengesellschaft Helmut Fischer Gmbh & Co. Kg Device for measuring the thickness of thin layers with a measuring probe

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