GB190320798A - Improved Electric Fish Masses or Shoal of Herrings Indicating Device. - Google Patents
Improved Electric Fish Masses or Shoal of Herrings Indicating Device.Info
- Publication number
- GB190320798A GB190320798A GB190320798DA GB190320798A GB 190320798 A GB190320798 A GB 190320798A GB 190320798D A GB190320798D A GB 190320798DA GB 190320798 A GB190320798 A GB 190320798A
- Authority
- GB
- United Kingdom
- Prior art keywords
- herrings
- shoal
- tube
- masses
- indicating device
- 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
Abstract
20,798. Eggen, J. Sept. 28. Signals, m a r i n e.- The presence of a shoal of herrings or other fish is indicated by contact of the fish with a closed tube, suspended in the sea, and containing a microphone connected through a wire with a battery, a telephone, and an immersed copper plate, the circuit being completed through the sea and the tube. The tube is weighted and suspended by a line marked to show the depth of submergence. The microphone may consist of a carbon plate d, resting between recessed supports f on two screws g, one of which is connected to the enclosing-tube a, while the other is insulated and connected to the conducting- wire B. A box may be provided to contain the apparatus, with a roller to carry the line and wire.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB190320798T | 1903-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB190320798A true GB190320798A (en) | 1904-01-21 |
Family
ID=32159295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB190320798D Expired GB190320798A (en) | 1903-09-28 | 1903-09-28 | Improved Electric Fish Masses or Shoal of Herrings Indicating Device. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB190320798A (en) |
-
1903
- 1903-09-28 GB GB190320798D patent/GB190320798A/en not_active Expired
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