GB1263717A - Duct deviation tester - Google Patents

Duct deviation tester

Info

Publication number
GB1263717A
GB1263717A GB3655168A GB3655168A GB1263717A GB 1263717 A GB1263717 A GB 1263717A GB 3655168 A GB3655168 A GB 3655168A GB 3655168 A GB3655168 A GB 3655168A GB 1263717 A GB1263717 A GB 1263717A
Authority
GB
United Kingdom
Prior art keywords
duct
deviation
straightness
july
pulled
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
GB3655168A
Inventor
William Derrick Priestley
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.)
Post Office
Original Assignee
Post Office
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 Post Office filed Critical Post Office
Priority to GB3655168A priority Critical patent/GB1263717A/en
Publication of GB1263717A publication Critical patent/GB1263717A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/28—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring contours or curvatures
    • G01B7/281—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring contours or curvatures for measuring contour or curvature along an axis, e.g. axial curvature of a pipeline or along a series of feeder rollers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

1,263,717. Gauging bends in ducts. POST OFFICE. July 30, 1969 [July 31, 1968], No.36551/68. Heading G1M. [Also in Division G4] In order to measure the deviation from straightness of a duct, two universal-joint 3, Fig. 1, coupled tubes 1, 2, are pulled through the duct, the tubes being guided in the duct by brushes 5, 6, 21, and the second tube 2 carries an extension 23, 24 which moves a contact 25 across a board 10, see also Fig. 3, so that one of three pulse trains produced by switches 48, 49, 50, coupled to a wheel Fig. 2 (not shown) rotated by the duct as the device is pulled through, is applied to a counter 40. Thus the final count represents the integral of the extent of deviation from straightness against displacement.
GB3655168A 1968-07-31 1968-07-31 Duct deviation tester Expired GB1263717A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3655168A GB1263717A (en) 1968-07-31 1968-07-31 Duct deviation tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3655168A GB1263717A (en) 1968-07-31 1968-07-31 Duct deviation tester

Publications (1)

Publication Number Publication Date
GB1263717A true GB1263717A (en) 1972-02-16

Family

ID=10389183

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3655168A Expired GB1263717A (en) 1968-07-31 1968-07-31 Duct deviation tester

Country Status (1)

Country Link
GB (1) GB1263717A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033378B1 (en) * 1980-01-31 1983-12-28 Rheinmetall GmbH Tube's internal diameter measuring apparatus
US4910877A (en) * 1988-07-18 1990-03-27 The United States Of America As Represented By The United States Department Of Energy Tube curvature measuring probe and method
US5195392A (en) * 1990-05-14 1993-03-23 Niagara Mohawk Power Corporation Internal pipe inspection system
US5329824A (en) * 1992-07-17 1994-07-19 Niagara Mohawk Power Corporation Centralizer for internal pipe inspection device
CN111735485A (en) * 2020-05-14 2020-10-02 国网浙江宁波市鄞州区供电有限公司 Waterproof cable duct detection device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033378B1 (en) * 1980-01-31 1983-12-28 Rheinmetall GmbH Tube's internal diameter measuring apparatus
US4910877A (en) * 1988-07-18 1990-03-27 The United States Of America As Represented By The United States Department Of Energy Tube curvature measuring probe and method
US5195392A (en) * 1990-05-14 1993-03-23 Niagara Mohawk Power Corporation Internal pipe inspection system
US5329824A (en) * 1992-07-17 1994-07-19 Niagara Mohawk Power Corporation Centralizer for internal pipe inspection device
CN111735485A (en) * 2020-05-14 2020-10-02 国网浙江宁波市鄞州区供电有限公司 Waterproof cable duct detection device

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