GB597433A - Improvements in and relating to an optical instrument for measuring lengths - Google Patents

Improvements in and relating to an optical instrument for measuring lengths

Info

Publication number
GB597433A
GB597433A GB21083/45A GB2108345A GB597433A GB 597433 A GB597433 A GB 597433A GB 21083/45 A GB21083/45 A GB 21083/45A GB 2108345 A GB2108345 A GB 2108345A GB 597433 A GB597433 A GB 597433A
Authority
GB
United Kingdom
Prior art keywords
feeler
carriage
lever
thread
carried
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
GB21083/45A
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.)
GENEVOISE INSTR PHYSIQUE
Societe Genevoise dInstruments de Physique
Original Assignee
GENEVOISE INSTR PHYSIQUE
Societe Genevoise dInstruments de Physique
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 GENEVOISE INSTR PHYSIQUE, Societe Genevoise dInstruments de Physique filed Critical GENEVOISE INSTR PHYSIQUE
Publication of GB597433A publication Critical patent/GB597433A/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
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/2425—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures of screw-threads

Landscapes

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

Abstract

597,433. Optical gauging-apparatus. SOC. GENEVOISE D'INSTRUMENTS DE PHYSIQUE. Aug. 17, 1945, No. 21083. Convention date, Oct. 18, 1944. [Class 106 (ii)] Optical gauging-apparatus, particularly for measuring the diameter of internally threaded articles, comprises a feeler 3 carried by a lever 4 supported pivotally by a carriage 7 enclosed and movable within a tube 15. The carriage is supported by a flexible tape 7a passing over rollers 21 and acted on by a spring 22, whereby when the feeler is brought up against a thread, the carriage can adjust its height automatically to enable the feeler to reach the base of the thread. An image of a reticule 17 is projected via a prism 19 on to a mirror 9 carried by the lever 4 and so is reflected on to a screen 18 observed through an eyepiece 23, whereby the support 24 can be adjusted by a micrometer screw 26 until the lever 4 is vertical and the feeler 3 is engaging the base of the thread. The difference of the readings on the micrometer 26, when opposite ends of the feeler 3 are made to engage opposite sides of the screwthread, and the known length of the feeler 3 gives the internal diameter.
GB21083/45A 1944-10-18 1945-08-17 Improvements in and relating to an optical instrument for measuring lengths Expired GB597433A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH597433X 1944-10-18

Publications (1)

Publication Number Publication Date
GB597433A true GB597433A (en) 1948-01-26

Family

ID=4522528

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21083/45A Expired GB597433A (en) 1944-10-18 1945-08-17 Improvements in and relating to an optical instrument for measuring lengths

Country Status (1)

Country Link
GB (1) GB597433A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2193319A (en) * 1984-07-26 1988-02-03 Nobuyuki Sugimura Sensor for measuring screw threads
CN104089584A (en) * 2014-06-27 2014-10-08 贵阳新天光电科技有限公司 Small-size internal thread measurement method achieved on universal length measuring gauge and device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2193319A (en) * 1984-07-26 1988-02-03 Nobuyuki Sugimura Sensor for measuring screw threads
GB2193319B (en) * 1984-07-26 1989-05-24 Nobuyuki Sugimura Nc lathe screw thread measurement
CN104089584A (en) * 2014-06-27 2014-10-08 贵阳新天光电科技有限公司 Small-size internal thread measurement method achieved on universal length measuring gauge and device

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