GB507737A - Improvements in hardness testing instruments - Google Patents
Improvements in hardness testing instrumentsInfo
- Publication number
- GB507737A GB507737A GB33762/38A GB3376238A GB507737A GB 507737 A GB507737 A GB 507737A GB 33762/38 A GB33762/38 A GB 33762/38A GB 3376238 A GB3376238 A GB 3376238A GB 507737 A GB507737 A GB 507737A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lens
- microscope
- penetrator
- nov
- mount
- 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
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/02—Objectives
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
- Microscoopes, Condenser (AREA)
Abstract
507,737. Testing hardness of materials. ZEISS, C., [Firm of]. Nov. 21, 1938, Nos. 33762 and 33763. Convention dates, Nov. 30, 1937 and May 23, 1938. [Class 106 (ii)] Comprises a penetrator and a microscope for measuring the impressions in which the penetrator is disposed on the object side lens of the microscope objective. A sleeve 2 is screwed to the tube 1 of a microscope. The mount 3 of the objective consisting of a front lens 4 and a rear lens 5 is displaceable parallel to the optical axis of the microscope against the influence of a spring 6. A small diamond pyramid 9 carries at the base an opaque silver layer and is cemented to the lens 4 with its apex in the optical axis of the microscope. Alternatively the penetrator is formed of a pyramid of transparent corundum whose base covers the entire aperture of the lens 4. In this case an immersion liquid of a refractive index corresponding to that of the penetrator is necessary between the front lens and the object to be tested. In a modification, the mount for both lenses is screwed to the tube while a parallel glass plate which completes the lens 4 is carried by a sleeve sliding against the influence of the spring, and the indentor is fixed to the glass plate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE507737X | 1937-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB507737A true GB507737A (en) | 1939-06-20 |
Family
ID=6546833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33762/38A Expired GB507737A (en) | 1937-11-30 | 1938-11-21 | Improvements in hardness testing instruments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB507737A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2803149A1 (en) * | 1978-01-25 | 1979-07-26 | Claus Dr Kleesattel | Hardness test impression measurement in material surfaces - involves narrow light beam projected onto tested surface and moved across impression |
| CN105716975A (en) * | 2016-02-26 | 2016-06-29 | 金南辉 | Material mechanical performance measurement device and pressing head assembly and measurement method thereof |
-
1938
- 1938-11-21 GB GB33762/38A patent/GB507737A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2803149A1 (en) * | 1978-01-25 | 1979-07-26 | Claus Dr Kleesattel | Hardness test impression measurement in material surfaces - involves narrow light beam projected onto tested surface and moved across impression |
| CN105716975A (en) * | 2016-02-26 | 2016-06-29 | 金南辉 | Material mechanical performance measurement device and pressing head assembly and measurement method thereof |
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