GB448052A - Improvements in or relating to callipers - Google Patents

Improvements in or relating to callipers

Info

Publication number
GB448052A
GB448052A GB26235A GB26235A GB448052A GB 448052 A GB448052 A GB 448052A GB 26235 A GB26235 A GB 26235A GB 26235 A GB26235 A GB 26235A GB 448052 A GB448052 A GB 448052A
Authority
GB
United Kingdom
Prior art keywords
pointer
legs
casing
pin
scale
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
GB26235A
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.)
ROBERT JOHN COMLEY
Original Assignee
ROBERT JOHN COMLEY
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 ROBERT JOHN COMLEY filed Critical ROBERT JOHN COMLEY
Priority to GB26235A priority Critical patent/GB448052A/en
Publication of GB448052A publication Critical patent/GB448052A/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
    • G01B3/16—Compasses, i.e. with a pair of pivoted arms
    • G01B3/166—Compasses, i.e. with a pair of pivoted arms provided with a measuring scale

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

448,052. Linear - dimension gauges. COMLEY, R. J., Knelston, Robert Street, Manselton, Swansea. Jan. 3, 1935, No. 262. [Class 106 (ii)] A double-reading callipers comprises two legs, two scales and two pointers, one being adapted to be set by moving the legs bodily by hand relatively to a fixed casing, whilst the other is automatically movable in conformity with the movements of a calliper leg. Two legs b, c, with ball contact members f are hinged together at d, the hinge being surrounded by a spring e. The casing a is centrally slotted to receive an extension g of the hinge pin d. This member g is movable in the slot h and carries a pointer j moving over a scale k on the casing. Means are provided for clamping the pointer at any reading. The casing also contains a distance pin l which prevents the legs coming together under the influence of a spring l<1>. The pin l also serves as a pivot for a pointer m adapted to move over a scale n with a central zero on either side of which are readings expressed as percentages above and below the figure for which the pointer j has been set. In use, the pointer j is set at the nominal thickness to be measured. The legs are now separated by means of the push rod p and then applied to the tube to be measured, being allowed to engage the work under the action of spring l<1>. An abutment o on the pointer m engages the leg c and the pointer takes part in the movement. In a modification, a pin is provided on the push rod to prevent the legs from coming together, and the rod is provided with a knife edge to engage the upper end of the pointer. The scale k is also arranged on one of the logs.
GB26235A 1935-01-03 1935-01-03 Improvements in or relating to callipers Expired GB448052A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB26235A GB448052A (en) 1935-01-03 1935-01-03 Improvements in or relating to callipers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26235A GB448052A (en) 1935-01-03 1935-01-03 Improvements in or relating to callipers

Publications (1)

Publication Number Publication Date
GB448052A true GB448052A (en) 1936-06-02

Family

ID=9701257

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26235A Expired GB448052A (en) 1935-01-03 1935-01-03 Improvements in or relating to callipers

Country Status (1)

Country Link
GB (1) GB448052A (en)

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