GB389541A - Improvements in or appertaining to optical comparators - Google Patents

Improvements in or appertaining to optical comparators

Info

Publication number
GB389541A
GB389541A GB2654031A GB2654031A GB389541A GB 389541 A GB389541 A GB 389541A GB 2654031 A GB2654031 A GB 2654031A GB 2654031 A GB2654031 A GB 2654031A GB 389541 A GB389541 A GB 389541A
Authority
GB
United Kingdom
Prior art keywords
mirror
anvil
mirrors
reflection
frame
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
GB2654031A
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.)
HENRY RICHARD STOCKS
STC PLC
Original Assignee
HENRY RICHARD STOCKS
Standard Telephone and Cables PLC
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 HENRY RICHARD STOCKS, Standard Telephone and Cables PLC filed Critical HENRY RICHARD STOCKS
Priority to GB2654031A priority Critical patent/GB389541A/en
Publication of GB389541A publication Critical patent/GB389541A/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
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness

Abstract

389,541. Linear -dimension gauges. STANDARD TELEPHONES & CABLES, Ltd. and STOCKS, H. R., Connaught House, Aldwych, London. Sept. 23, 1931, No. 26540. [Class 106 (ii).] An optical comparator comprises an adjustable anvil 14, and a movable member 13 which forms one side of a parallelogram linkage the opposite side of which is attached to or formed by the frame 2 the two remaining sides comprising flexible members 11, 12. When an object is placed between the anvil 14 and member 13 the latter is moved and since it abuts against a pin 7 passing through a vertical spindle 6 carrying a mirror 5 tilts the latter. Light from a source 1 after reflection from mirrors 3, 4 passes to the mirror 5 and thence after reflection from a mirror 8 to a scale 9. Screens 17, 18 are fitted. In a modification the mirror 5 is carried by a leaf spring secured to the frame and the arrangement of the light source and mirrors in the casing is modified. A finger-operated lever may be provided for opening the gap between the anvil 14 and movable member 13 to facilitate the insertion of the object.
GB2654031A 1931-09-23 1931-09-23 Improvements in or appertaining to optical comparators Expired GB389541A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2654031A GB389541A (en) 1931-09-23 1931-09-23 Improvements in or appertaining to optical comparators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2654031A GB389541A (en) 1931-09-23 1931-09-23 Improvements in or appertaining to optical comparators

Publications (1)

Publication Number Publication Date
GB389541A true GB389541A (en) 1933-03-23

Family

ID=10245235

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2654031A Expired GB389541A (en) 1931-09-23 1931-09-23 Improvements in or appertaining to optical comparators

Country Status (1)

Country Link
GB (1) GB389541A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2500726A (en) * 1945-05-23 1950-03-14 John L Westhaver Light-weight optical lever micrometer
US3184855A (en) * 1961-03-06 1965-05-25 Sebastiani Peter Measuring instrument having a resiliently mounted feeler and a spring loaded pointer beam and optical indication
US3664246A (en) * 1968-10-15 1972-05-23 Minolta Camera Kk Device for restraining a pointer of ammeter for the exposure meter in a camera

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2500726A (en) * 1945-05-23 1950-03-14 John L Westhaver Light-weight optical lever micrometer
US3184855A (en) * 1961-03-06 1965-05-25 Sebastiani Peter Measuring instrument having a resiliently mounted feeler and a spring loaded pointer beam and optical indication
US3664246A (en) * 1968-10-15 1972-05-23 Minolta Camera Kk Device for restraining a pointer of ammeter for the exposure meter in a camera

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