CH591075A5 - Manually operated materials hardness tester - has direct reading dial on top of concentric cylinder plunger mechanism - Google Patents

Manually operated materials hardness tester - has direct reading dial on top of concentric cylinder plunger mechanism

Info

Publication number
CH591075A5
CH591075A5 CH314175A CH314175A CH591075A5 CH 591075 A5 CH591075 A5 CH 591075A5 CH 314175 A CH314175 A CH 314175A CH 314175 A CH314175 A CH 314175A CH 591075 A5 CH591075 A5 CH 591075A5
Authority
CH
Switzerland
Prior art keywords
hardness tester
manually operated
direct reading
plunger mechanism
concentric cylinder
Prior art date
Application number
CH314175A
Original Assignee
Ernst Alfred
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 Alfred filed Critical Ernst Alfred
Priority to CH314175A priority Critical patent/CH591075A5/en
Priority to IT2049276A priority patent/IT1055989B/en
Priority to GB876976A priority patent/GB1522532A/en
Priority to US05/664,471 priority patent/US4023401A/en
Priority to DE19762609627 priority patent/DE2609627C3/en
Priority to FR7606798A priority patent/FR2304075A1/en
Priority to JP2703176A priority patent/JPS51117087A/en
Publication of CH591075A5 publication Critical patent/CH591075A5/en

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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0098—Tests specified by its name, e.g. Charpy, Brinnel, Mullen

Abstract

The hardness tester comprises an outer cylindrical housing (87) with diametrically-opposed handles for operating the device (90). The housing has an inner ring (97) through which passes a central cylinder (88). This cylinder carries a projecting ring (95) with bevelled rim (96) which supports the corresponding face of the other ring (97) through a ball-bearing race (99). The upper part carries an indicating dial (93) and pointer operated by a hydraulic mechanism energised during operation. The tester is first correctly centred over the work-piece surface and downward pressure on the handles causes a pointed probe to be forced vertically down through a double coil spring coupling mechanism within the central cylinder (88). This actuates the metering device and the hardness value can be read off directly from the top of the instrument.
CH314175A 1975-03-12 1975-03-12 Manually operated materials hardness tester - has direct reading dial on top of concentric cylinder plunger mechanism CH591075A5 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CH314175A CH591075A5 (en) 1975-03-12 1975-03-12 Manually operated materials hardness tester - has direct reading dial on top of concentric cylinder plunger mechanism
IT2049276A IT1055989B (en) 1975-03-12 1976-02-24 CENTERING DEVICE FOR HAND-OPERATED HARDNESS GAUGES
GB876976A GB1522532A (en) 1975-03-12 1976-03-04 Hand-operable hardness tester
US05/664,471 US4023401A (en) 1975-03-12 1976-03-08 Hand-operable durometer
DE19762609627 DE2609627C3 (en) 1975-03-12 1976-03-09 Manually operated hardness tester
FR7606798A FR2304075A1 (en) 1975-03-12 1976-03-10 HAND-ACTIONABLE HARDNESS MEASUREMENT
JP2703176A JPS51117087A (en) 1975-03-12 1976-03-12 Manual durometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH314175A CH591075A5 (en) 1975-03-12 1975-03-12 Manually operated materials hardness tester - has direct reading dial on top of concentric cylinder plunger mechanism

Publications (1)

Publication Number Publication Date
CH591075A5 true CH591075A5 (en) 1977-08-31

Family

ID=4249484

Family Applications (1)

Application Number Title Priority Date Filing Date
CH314175A CH591075A5 (en) 1975-03-12 1975-03-12 Manually operated materials hardness tester - has direct reading dial on top of concentric cylinder plunger mechanism

Country Status (2)

Country Link
CH (1) CH591075A5 (en)
IT (1) IT1055989B (en)

Also Published As

Publication number Publication date
IT1055989B (en) 1982-01-11

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Legal Events

Date Code Title Description
PL Patent ceased