GB650262A - Improvements in apparatus for measuring the hardness of materials - Google Patents
Improvements in apparatus for measuring the hardness of materialsInfo
- 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
- United Kingdom
- Prior art keywords
- casing
- indicator
- base
- spring
- needle
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/42—Investigating 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.
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 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999053292A1 (en) * | 1998-04-09 | 1999-10-21 | Smith & Nephew, Inc. | Cartilage indentor instrument |
| CN112067478A (en) * | 2020-09-14 | 2020-12-11 | 浙江埃特斯力试验设备有限公司 | Be applied to diversified fatigue testing machine of torsional spring |
-
1948
- 1948-01-23 GB GB207948A patent/GB650262A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999053292A1 (en) * | 1998-04-09 | 1999-10-21 | Smith & Nephew, Inc. | Cartilage indentor instrument |
| CN112067478A (en) * | 2020-09-14 | 2020-12-11 | 浙江埃特斯力试验设备有限公司 | Be applied to diversified fatigue testing machine of torsional spring |
| CN112067478B (en) * | 2020-09-14 | 2022-10-04 | 浙江埃特斯力试验设备有限公司 | Be applied to diversified fatigue testing machine of torsional spring |
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