GB362582A - Improvements in listening instruments for acoustic testing purposes - Google Patents
Improvements in listening instruments for acoustic testing purposesInfo
- Publication number
- GB362582A GB362582A GB2993330A GB2993330A GB362582A GB 362582 A GB362582 A GB 362582A GB 2993330 A GB2993330 A GB 2993330A GB 2993330 A GB2993330 A GB 2993330A GB 362582 A GB362582 A GB 362582A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- rod
- instrument
- listening
- testing purposes
- 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
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
Abstract
362,582. Detecting sounds. SCHAAFHAUSEN, W., 9, Gr. Allee, Hamburg, Germany. Oct. 6, 1930, No. 29933. [Class 13.] A listening instrument such as a tube or rod for acoustically testing machines and apparatus is combined with an adjustable Helmholtz resonator so that the general noise of the machine can be eliminated and particular sounds detected. In the simple form, Fig. 1, sound is conveyed by the tube or rod to a chamber a and diaphragm b, and passes through a hole d to the telescopic resonator c, e, the exit hole f being put to the ear. In Fig. 2, several concentric tubes or boxes 1, 5, 8 are assembled telescopically, and a sound box 14, with apertures which may be adjusted, is fitted at the base. An inner tube 10 can be pushed in to join the leading-in tube 15. A microphone, valve amplifier, and telephone receiver may be used to amplify weak vibrations before introducing them into the instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2993330A GB362582A (en) | 1930-10-06 | 1930-10-06 | Improvements in listening instruments for acoustic testing purposes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2993330A GB362582A (en) | 1930-10-06 | 1930-10-06 | Improvements in listening instruments for acoustic testing purposes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB362582A true GB362582A (en) | 1931-12-10 |
Family
ID=10299561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2993330A Expired GB362582A (en) | 1930-10-06 | 1930-10-06 | Improvements in listening instruments for acoustic testing purposes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB362582A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2234137A (en) * | 1989-07-18 | 1991-01-23 | Messerschmitt Boelkow Blohm | A device for the detection and location of sound waves |
| GB2397624A (en) * | 2003-01-24 | 2004-07-28 | Visteon Global Tech Inc | A variable tuned telescoping resonator |
-
1930
- 1930-10-06 GB GB2993330A patent/GB362582A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2234137A (en) * | 1989-07-18 | 1991-01-23 | Messerschmitt Boelkow Blohm | A device for the detection and location of sound waves |
| GB2234137B (en) * | 1989-07-18 | 1994-01-12 | Messerschmitt Boelkow Blohm | A device for the detection and location of sound waves |
| GB2397624A (en) * | 2003-01-24 | 2004-07-28 | Visteon Global Tech Inc | A variable tuned telescoping resonator |
| GB2397624B (en) * | 2003-01-24 | 2005-03-30 | Visteon Global Tech Inc | Variable tuned telescoping resonator |
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