GB1096169A - Hardness testing device - Google Patents

Hardness testing device

Info

Publication number
GB1096169A
GB1096169A GB5072465A GB5072465A GB1096169A GB 1096169 A GB1096169 A GB 1096169A GB 5072465 A GB5072465 A GB 5072465A GB 5072465 A GB5072465 A GB 5072465A GB 1096169 A GB1096169 A GB 1096169A
Authority
GB
United Kingdom
Prior art keywords
pressure
indenter
wall
pump
weight
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
GB5072465A
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.)
Ernst Leitz Wetzlar GmbH
Original Assignee
Ernst Leitz Wetzlar GmbH
Ernst Leitz GmbH
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 Ernst Leitz Wetzlar GmbH, Ernst Leitz GmbH filed Critical Ernst Leitz Wetzlar GmbH
Publication of GB1096169A publication Critical patent/GB1096169A/en
Expired legal-status Critical Current

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

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Reciprocating Pumps (AREA)

Abstract

1, 096, 169. Hardness tests. ERNST LEITZ G.m.b.H. Nov.30, 1965 [Feb.23, 1965], No. 50724/65. Heading G1S. A hardness testing device comprises a pump 30 driven by an electric motor 31 and arranged to discharge fluid into a pressure chamber 16 communicating through a duct 15 with a pressure response actuating device 2 for an indenter 1, the pressure chamber 16 having a flexible wall 17, a weight 24 for loading the wall 17 and a switch 21 responsive to the deflection of the wall operable to control energization of the motor 31. The indenter 1 is retained in the rest position by a permanent magnet 9. In use pressure is revised in chambers 3, 16 to exert a pressure on the indenter 1 by saving the weight 24 to close switch 21' and closing valve 29 to produce a pressure in pump 30. After testing the valve 29 is opened to effect return of the indenter 1.
GB5072465A 1965-02-23 1965-11-30 Hardness testing device Expired GB1096169A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL0039042 1965-02-23

Publications (1)

Publication Number Publication Date
GB1096169A true GB1096169A (en) 1967-12-20

Family

ID=7268510

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5072465A Expired GB1096169A (en) 1965-02-23 1965-11-30 Hardness testing device

Country Status (3)

Country Link
AT (1) AT261259B (en)
FR (1) FR1462125A (en)
GB (1) GB1096169A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3763697A (en) * 1970-04-15 1973-10-09 Sturm Stress Inc Method and apparatus for determining stress
US4402228A (en) * 1981-06-04 1983-09-06 General Battery Corporation Apparatus and method for testing the hardness of battery components
GB2211949A (en) * 1987-11-05 1989-07-12 Helmut Fischer Gmbh & Co A hardness measuring instrument

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059990A (en) * 1976-08-02 1977-11-29 Federal-Mogul Corporation Materials hardness testing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3763697A (en) * 1970-04-15 1973-10-09 Sturm Stress Inc Method and apparatus for determining stress
US4402228A (en) * 1981-06-04 1983-09-06 General Battery Corporation Apparatus and method for testing the hardness of battery components
GB2211949A (en) * 1987-11-05 1989-07-12 Helmut Fischer Gmbh & Co A hardness measuring instrument
GB2211949B (en) * 1987-11-05 1992-04-22 Helmut Fischer Gmbh & Co Device for a hardness measuring instrument

Also Published As

Publication number Publication date
AT261259B (en) 1968-04-10
FR1462125A (en) 1966-12-09

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