GB655254A - Improvements in or relating to vibratory apparatus for testing purposes - Google Patents
Improvements in or relating to vibratory apparatus for testing purposesInfo
- Publication number
- GB655254A GB655254A GB1551747A GB1551747A GB655254A GB 655254 A GB655254 A GB 655254A GB 1551747 A GB1551747 A GB 1551747A GB 1551747 A GB1551747 A GB 1551747A GB 655254 A GB655254 A GB 655254A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cantilever
- bar
- rollers
- length
- electromagnet
- 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
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/04—Monodirectional test stands
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
655,254. Testing by vibrations. WEST & CO., Ltd., A., and BREEZE, V. L. June 12, 1947, No. 15517. [Class 106 (ii)] Apparatus for causing devices to vibrate for the purpose of testing them comprises a bar mounted to constitute a cantilever for supporting the device to be vibrated, means for varying the length of the cantilever to adjust the resonant frequency thereof and an electromagnet adapted to be energized at the resonant frequency of the cantilever to vibrate the cantilever, whereby the frequency of vibration to which the device is subjected may be varied by varying the length of the cantilever and correspondingly adjusting the energization of the electromagnet to the resonant frequency. The cantilever bar 1 is of steel and is clamped between upper and lower rollers 3, 4. The upper rollers are rotatably mounted between plates 8 slidable relatively to outer plates 5, in which the lower rollers 4 are rotatably mounted, under control of a screw 11 threaded in a fixed bossed plate 12 and rotatable by means of a hand lever 14. In order to adjust the length of the cantilever, the rollers 4 carry gears 15 meshing with a pinion 16 on a shaft rotatable by means of radial arms 18. The electromagnet 2 is supplied from a commutator driven by a synchronous motor or with an amplified current derived from a coil mounted on the bar and in a fixed magnetic field. The bar may be rigidly mounted at its fixed end, in which case a single pair of rollers is mounted for horizontal movement along the bar in order to vary the cantilever length. According to the Provisional Specification, the rollers may be grooved to fit the cantilever bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1551747A GB655254A (en) | 1947-06-12 | 1947-06-12 | Improvements in or relating to vibratory apparatus for testing purposes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1551747A GB655254A (en) | 1947-06-12 | 1947-06-12 | Improvements in or relating to vibratory apparatus for testing purposes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB655254A true GB655254A (en) | 1951-07-18 |
Family
ID=10060519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1551747A Expired GB655254A (en) | 1947-06-12 | 1947-06-12 | Improvements in or relating to vibratory apparatus for testing purposes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB655254A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2686427A (en) * | 1951-09-21 | 1954-08-17 | Atomic Energy Commission | Resonant type shake table |
| US2958216A (en) * | 1955-06-10 | 1960-11-01 | Thomas A Perls | Resonant-beam calibrator |
| CN108318204A (en) * | 2018-03-21 | 2018-07-24 | 天津大学 | A kind of electromagnetic impact vibration testing device |
| CN109990963A (en) * | 2019-03-15 | 2019-07-09 | 广州大学 | A kind of self-vibration characteristic test platform of structural member |
-
1947
- 1947-06-12 GB GB1551747A patent/GB655254A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2686427A (en) * | 1951-09-21 | 1954-08-17 | Atomic Energy Commission | Resonant type shake table |
| US2958216A (en) * | 1955-06-10 | 1960-11-01 | Thomas A Perls | Resonant-beam calibrator |
| CN108318204A (en) * | 2018-03-21 | 2018-07-24 | 天津大学 | A kind of electromagnetic impact vibration testing device |
| CN108318204B (en) * | 2018-03-21 | 2023-09-12 | 天津大学 | Electromagnetic impact vibration experimental device |
| CN109990963A (en) * | 2019-03-15 | 2019-07-09 | 广州大学 | A kind of self-vibration characteristic test platform of structural member |
| CN109990963B (en) * | 2019-03-15 | 2021-09-28 | 广州大学 | Self-vibration characteristic test platform of structural member |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2051364A (en) | Flaw detectinmg device and method | |
| GB655254A (en) | Improvements in or relating to vibratory apparatus for testing purposes | |
| US2116367A (en) | Apparatus for treating metals | |
| US2596226A (en) | Device for producing motion | |
| US2947410A (en) | Drive means for vibratory apparatus | |
| GB1075253A (en) | Improvements in or relating to electro-slag welding apparatus | |
| US2046294A (en) | Apparatus for balancing rotatable bodies | |
| US2128269A (en) | Means and method of vibrating the wire of a paper-making machine | |
| US2402012A (en) | Frequency multiplying apparatus | |
| GB877548A (en) | Apparatus for massage by electric vibrations | |
| GB1260140A (en) | Therapeutic vibrating apparatus | |
| SU537311A1 (en) | Apparatus for determining the magnetic texture of cylindrical magnets in the diametrical direction | |
| GB992002A (en) | Vibrator | |
| BE541577A (en) | ||
| GB790861A (en) | Improvements relating to electro-magnetic vibratory apparatus for vibrating moulds for concrete and the like | |
| GB367012A (en) | Improvements in electric clocks and phonic motors | |
| GB503530A (en) | Improvements in the testing of materials | |
| GB714351A (en) | Improvements in or relating to balancing machines for determining the running out-of-balance of rotary bodies | |
| GB597951A (en) | Improvements in vibratory screens | |
| GB592806A (en) | Improvements in or relating to vibrating tables | |
| GB661589A (en) | Improved electro-magnetic motor and drive to power spindles | |
| US2524510A (en) | Telephone ringing apparatus with vibratory reed of magnetic material | |
| GB642974A (en) | Improvements in and relating to vibratory apparatus for sifting or consolidating materials | |
| GB678227A (en) | Improvements in or relating to vibratory machines for casting dental plaster and the like | |
| GB795437A (en) | Improvements in or relating to vibrators for consolidating concrete and similar operations |