GB650262A - Improvements in apparatus for measuring the hardness of materials - Google Patents

Improvements in apparatus for measuring the hardness of materials

Info

Publication number
GB650262A
GB650262A GB207948A GB207948A GB650262A GB 650262 A GB650262 A GB 650262A GB 207948 A GB207948 A GB 207948A GB 207948 A GB207948 A GB 207948A GB 650262 A GB650262 A GB 650262A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
member
casing
base
indicator
spring
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
GB207948A
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.)
ARTHUR ROWLATT MORE
H W WALLACE AND CO Ltd
Original Assignee
ARTHUR ROWLATT MORE
H W WALLACE AND CO Ltd
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

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/40Investigating hardness or rebound hardness
    • G01N3/42Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid

Abstract

650,262. Testing physical qualities of materials. WALLACE & CO., Ltd., H. W., and MORE, A. R. Jan. 23, 1948, No. 2079. [Class 106 (ii)] A pocket hardness tester comprises a casing having a base, or member 14 attached to the base, shaped to rest on the specimen to be tested (not shown), a penetration member 11 guided vertically in the casing and urged downwardly, so as to project through the base, by a spiral torsion spring 16, and a rack-andpinion 20, 21 or toothed quadrant gearing connecting the member 11 with an indicator. As shown, the downward movement of the member 11 is limited by the member 14, and the spring is mounted on an arbor 17 which can be adjusted from outside the casing for calibration of the indicator comprising a needle 8, Fig. 3, moving over a dial. To determine whether the spring is correctly adjusted, the casing is inverted and a pivotal support 26 for a check weight 27, which presses on the member 11, is removably secured over a plate 29 integral with the member 14. The indicator dial may be movable instead of the needle 8.
GB207948A 1948-01-23 1948-01-23 Improvements in apparatus for measuring the hardness of materials Expired GB650262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB207948A GB650262A (en) 1948-01-23 1948-01-23 Improvements in apparatus for measuring the hardness of materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB207948A GB650262A (en) 1948-01-23 1948-01-23 Improvements in apparatus for measuring the hardness of materials

Publications (1)

Publication Number Publication Date
GB650262A true true GB650262A (en) 1951-02-21

Family

ID=9733212

Family Applications (1)

Application Number Title Priority Date Filing Date
GB207948A Expired GB650262A (en) 1948-01-23 1948-01-23 Improvements in apparatus for measuring the hardness of materials

Country Status (1)

Country Link
GB (1) GB650262A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999053292A1 (en) * 1998-04-09 1999-10-21 Smith & Nephew, Inc. Cartilage indentor instrument

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999053292A1 (en) * 1998-04-09 1999-10-21 Smith & Nephew, Inc. Cartilage indentor instrument

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