GB1400293A - Precision measuring instruments - Google Patents

Precision measuring instruments

Info

Publication number
GB1400293A
GB1400293A GB2914772A GB2914772A GB1400293A GB 1400293 A GB1400293 A GB 1400293A GB 2914772 A GB2914772 A GB 2914772A GB 2914772 A GB2914772 A GB 2914772A GB 1400293 A GB1400293 A GB 1400293A
Authority
GB
United Kingdom
Prior art keywords
movable jaw
tape
light beam
encoder
jaw
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
GB2914772A
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.)
OPTOGRAMS Inc
Original Assignee
OPTOGRAMS Inc
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 OPTOGRAMS Inc filed Critical OPTOGRAMS Inc
Publication of GB1400293A publication Critical patent/GB1400293A/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
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/20—Slide gauges
    • G01B3/205—Slide gauges provided with a counter for digital indication of the measured dimension
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
    • G01B11/0608—Height gauges

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

1400293 Electro-optical measuring apparatus OPTOGRAMS Inc 21 June 1972 [28 Feb 1972] 29147/72 Heading G1A Measuring apparatus comprises a fixed and a movable jaw biased together by a constant tension spring and an encoder carrying equally spaced lines and connected to the movable jaw so that it interrupts a light beam when the movable jaw is moved and produces pulses, in number proportional to the displacement. The device may be in the form of a micrometer as shown or may be a height gauge or a probe type depth micrometer. The encoder may be linear or rotary, transparent or opaque and the lines may interrupt a through beam or reflect the light beam. The method of operation is said to be to move the jaws apart, place the object between them and then allow them to return to contact the object. A counter records the number of pulses in each movement and is said to be able to detect the direction of movement and hence to give a reading proportional to the size of the object. As shown, Fig.2, the moving jaw 38 slides on rods 46, 47 and is biased towards fixed jaw 36 by constant tension spring 55. The encoder 72 is attached to the upper part of movable jaw 38 and moves linearly to interrupt a light beam from the source mounted in block 64. In a second embodiment, Fig.14, a nut 230 mounted on movable jaw 38 rotates a lead screw 222 and drives a rotary disc 135 with radial lines past a light source and receiver 68. In a third embodiment, Fig.9, the encoders are driven by a tape passing round precision rollers. The ends of tape 147 are both clamped at 145, 146 in the upper parts of the movable jaw 38 and the tape passes round precision rollers 150, 152 and guide rollers 148, 149, 154. Both precision rollers 150, 152 carry encoders 135a, 135b respectively and the light beam 66 passes through the overlapping part of the encoders. Many variations of this tape and roller system are described. For example, a single encoder, mounted on precision roller 154 may be used or the tape may stretch from movable jaw 38, round the encoding roller and then to another mounting kept taut by a constant tension spring.
GB2914772A 1972-02-28 1972-06-21 Precision measuring instruments Expired GB1400293A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22994472A 1972-02-28 1972-02-28

Publications (1)

Publication Number Publication Date
GB1400293A true GB1400293A (en) 1975-07-16

Family

ID=22863328

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2914772A Expired GB1400293A (en) 1972-02-28 1972-06-21 Precision measuring instruments

Country Status (4)

Country Link
JP (1) JPS48100157A (en)
CA (1) CA973706A (en)
DE (1) DE2237329A1 (en)
GB (1) GB1400293A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103427A (en) * 1976-08-30 1978-08-01 Suntech, Inc. Electronic digital micrometer
US4255861A (en) * 1978-06-24 1981-03-17 Kabushiki Kaisha Mitutoyo Seisakusho Electrically digital display micrometer
GB2203536A (en) * 1987-04-16 1988-10-19 Roger Howard Thornton Length measuring device
CN112665632A (en) * 2020-12-18 2021-04-16 苏州富纳智能科技有限公司 Electrical teaching platform is with vertical flexible detection device

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60178309A (en) * 1984-02-24 1985-09-12 Mitsutoyo Mfg Co Ltd Digital display type length measuring system
JPS60178307A (en) * 1984-02-24 1985-09-12 Mitsutoyo Mfg Co Ltd Measured-value displaying method of length measuring device
JPS60178308A (en) * 1984-02-24 1985-09-12 Mitsutoyo Mfg Co Ltd Digital display type length measuring system
JPS61105414A (en) * 1984-10-29 1986-05-23 Mitsutoyo Mfg Co Ltd Three-dimensional measuring machine
JPH0526483Y2 (en) * 1984-11-14 1993-07-05
JPS62185108A (en) * 1986-02-12 1987-08-13 Sekisui Jushi Co Ltd Length measuring apparatus for positioning with data output
JPS6367815U (en) * 1986-10-21 1988-05-07
JP5649595B2 (en) * 2012-01-19 2015-01-07 三菱重工業株式会社 Pipe diameter measuring device and pipe diameter inspection method
CN114812327B (en) * 2022-03-21 2023-05-23 中国五冶集团有限公司 Measuring scale for measuring deepest of irregular damaged surface of concrete member surface
DE102022125630A1 (en) 2022-10-05 2024-04-11 Karlsruher Institut für Technologie, Körperschaft des öffentlichen Rechts Arrangement with two rollers spaced apart to form a gap with a gap width measuring system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1215349A (en) * 1968-01-19 1970-12-09 Leitz Ernst Gmbh Measuring device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103427A (en) * 1976-08-30 1978-08-01 Suntech, Inc. Electronic digital micrometer
US4255861A (en) * 1978-06-24 1981-03-17 Kabushiki Kaisha Mitutoyo Seisakusho Electrically digital display micrometer
GB2203536A (en) * 1987-04-16 1988-10-19 Roger Howard Thornton Length measuring device
CN112665632A (en) * 2020-12-18 2021-04-16 苏州富纳智能科技有限公司 Electrical teaching platform is with vertical flexible detection device

Also Published As

Publication number Publication date
JPS48100157A (en) 1973-12-18
CA973706A (en) 1975-09-02
DE2237329A1 (en) 1973-09-06

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee