GB148987A - Submarine sound transmitter - Google Patents
Submarine sound transmitterInfo
- Publication number
- GB148987A GB148987A GB2084920A GB2084920A GB148987A GB 148987 A GB148987 A GB 148987A GB 2084920 A GB2084920 A GB 2084920A GB 2084920 A GB2084920 A GB 2084920A GB 148987 A GB148987 A GB 148987A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- lever
- amplitude
- frequency
- employed
- 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
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
148,987. Signal Ges. May 3, 1918, [Convention date]. Subaqueous audible signals.-The exciting-device e of a transmitter acts on the diaphragm b through a reducing-lever a, which, instead of being pivoted, is constructed so as to be flexible at the point of bending c, but is otherwise rigid with respect to the frequency employed. The lever may be of single or double T cross-section, and tapered towards the high-amplitude end. The small-amplitude end may be attached to the casing g, Fig. 1, or to a heavy free mass m, Fig. 2, which remains stationary when the lever vibrates. The diaphragm may be tuned to the signal frequency, or if signalling is to be effected over a range of frequencies the natural frequency of the diaphragm is made considerably higher or lower. In the latter case the diaphragm may have a rigid central portion p, Fig. 3, oscillating like a piston, and a flexible rim, which may be stiffened by ribs i to determine its mode of vibration. The amplitude-transformation may take place in more than one stage, and mechanical or hydraulic methods of excitation may be employed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES48249D DE369359C (en) | 1918-05-04 | 1918-05-04 | Underwater sound transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB148987A true GB148987A (en) | 1921-09-22 |
Family
ID=5673091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2084920A Expired GB148987A (en) | 1918-05-04 | 1920-07-10 | Submarine sound transmitter |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE369359C (en) |
| FR (1) | FR532119A (en) |
| GB (1) | GB148987A (en) |
| NL (1) | NL9696C (en) |
-
1918
- 1918-05-04 DE DES48249D patent/DE369359C/en not_active Expired
-
1920
- 1920-06-23 NL NL15245A patent/NL9696C/xx active
- 1920-07-08 FR FR532119D patent/FR532119A/en not_active Expired
- 1920-07-10 GB GB2084920A patent/GB148987A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL9696C (en) | 1923-10-15 |
| DE369359C (en) | 1923-02-17 |
| FR532119A (en) | 1922-01-28 |
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