GB738022A - Apparatus and methods for measuring the hardness of surfaces - Google Patents
Apparatus and methods for measuring the hardness of surfacesInfo
- Publication number
- GB738022A GB738022A GB3196752A GB3196752A GB738022A GB 738022 A GB738022 A GB 738022A GB 3196752 A GB3196752 A GB 3196752A GB 3196752 A GB3196752 A GB 3196752A GB 738022 A GB738022 A GB 738022A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rocker
- pendulum
- hardness
- escapement mechanism
- amplitude
- 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
- G01N3/50—Investigating hardness or rebound hardness by measuring rolling friction, e.g. by rocking pendulum
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)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
738,022. Testing the hardness of paint and like surface coverings. IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 17, 1954 [Dec. 17, 1952], No. 31967/52. Class 106 (2). A device for measuring the hardness of paint films and like surface coverings consists of two discs 1 connected by spacing bars 2 and carrying an eccentrically positioned weight 3, the assembly being called a " rocker," and is characterized in that it is fitted with an escapement mechanism which indicates the number of oscillations made by the rocker, each oscillation of which having an amplitude greater than some particular amplitude, and in that means are provided for setting the rocker into motion with a predetermined initial amplitude. A spindle 4 carrying a hand 5 at one end, a winding knob 7 at the other and a spiral spring 8, the other end of which is fixed to a pin 9, passes through the discs 1 and a toothed wheel 6 frictionally mounted on the spindle engages with a pallet 12 fixed to a second spindle 10, on which is also fixed a weight 11 which acts as a pendulum for the escapement mechanism. In operation the spring is wound by the knob 7 during which operation the wheel 6 remains stationary, the hand 5 is zeroized on a scale 13, the device is placed on the surface to be tested, tilted as far as a stop 14 will permit and is then released. As the rocker oscillates the pendulum 11 tends to hang vertically and, as a result of the relative motion between the rocker and the pendulum, the escapement mechanism is actuated. With each oscillation of the rocker, the wheel 6 rotates one tooth. This continues until the amplitude of oscillation of the rocker has decreased to a value beyond which the relative movement between the rocker and the pendulum is insufficient to actuate the escapement mechanism. The hand then indicates the number of oscillations made by the rocker, the amplitudes of which all lie within a given range, and this number is proportional to the hardness of the specimen under test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3196752A GB738022A (en) | 1952-12-17 | 1952-12-17 | Apparatus and methods for measuring the hardness of surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3196752A GB738022A (en) | 1952-12-17 | 1952-12-17 | Apparatus and methods for measuring the hardness of surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB738022A true GB738022A (en) | 1955-10-05 |
Family
ID=10331051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3196752A Expired GB738022A (en) | 1952-12-17 | 1952-12-17 | Apparatus and methods for measuring the hardness of surfaces |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB738022A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072578A (en) * | 2017-12-28 | 2018-05-25 | 河南省计量科学研究院 | Horst Buchholz identation hardness instrument |
| CN112059724A (en) * | 2020-09-10 | 2020-12-11 | 黄淮学院 | Numerical control machine tool cutter wear monitoring device and detection method |
-
1952
- 1952-12-17 GB GB3196752A patent/GB738022A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072578A (en) * | 2017-12-28 | 2018-05-25 | 河南省计量科学研究院 | Horst Buchholz identation hardness instrument |
| CN108072578B (en) * | 2017-12-28 | 2023-08-15 | 河南省计量科学研究院 | Barkholderia indentation hardness tester |
| CN112059724A (en) * | 2020-09-10 | 2020-12-11 | 黄淮学院 | Numerical control machine tool cutter wear monitoring device and detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3486369A (en) | Method and apparatus for measuring the mass per unit length of elongated products | |
| GB738022A (en) | Apparatus and methods for measuring the hardness of surfaces | |
| US3435658A (en) | Typewriter platen tester | |
| US2376814A (en) | Compression indicator | |
| GB575150A (en) | Improvements in or relating to devices for testing the thickness of coatings on ferro-magnetic materials | |
| GB191119597A (en) | A Machine for Demonstrating on Centrifugal Force. | |
| US2778219A (en) | Impact tester for brittle materials | |
| US2393069A (en) | Vibrograph | |
| McHenry | A compliance method for crack growth studies at elevated temperatures(High temperature fatigue crack growth studies by compliance calibration test method, evaluating temperature and cycle rates effects) | |
| US1935752A (en) | Surface testing apparatus | |
| US2907201A (en) | Horizontal shock machine | |
| US2740290A (en) | Rocker-type apparatus for measuring the hardness of surfaces | |
| FR2410268A1 (en) | AUTOMATIC HARDNESS MEASURING PENDULUM | |
| GB730035A (en) | Measuring tension in filamentary material | |
| GB819971A (en) | Improvements in compression tester for resilient materials | |
| SU80259A1 (en) | Instrument for measuring residual deformations of flat springs | |
| SU365551A1 (en) | ^ SOOOOENA | |
| GB216680A (en) | An improved apparatus for effecting a test of the hardness of materials | |
| GB1065788A (en) | Method of and apparatus for evaluating the abrasive qualities of abrasive materials | |
| DE384426C (en) | Device for determining the hardness by means of the ball pressure test | |
| SU54924A1 (en) | The method of determining the hardness of materials | |
| SU727971A1 (en) | Apparatus for measuring discontinuous-surface components | |
| SU433402A1 (en) | DEVICE FOR MEASURING THE SPEED OF COLLATING DETAILS OF MACHINES | |
| SU120026A1 (en) | Rubber Tester | |
| GB563219A (en) | An instrument for gauging and recording the degree of accuracy or inaccuracy of a square or angular object |