GB1337079A - Device for measuring the distance between two underwater elements of trawl gear especially the vertical distance - Google Patents
Device for measuring the distance between two underwater elements of trawl gear especially the vertical distanceInfo
- Publication number
- GB1337079A GB1337079A GB2313971A GB2313971A GB1337079A GB 1337079 A GB1337079 A GB 1337079A GB 2313971 A GB2313971 A GB 2313971A GB 2313971 A GB2313971 A GB 2313971A GB 1337079 A GB1337079 A GB 1337079A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- bellows
- distance
- measuring
- encased
- 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
- 239000007788 liquid Substances 0.000 abstract 2
- 239000012528 membrane Substances 0.000 abstract 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 230000002706 hydrostatic effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
- G01C3/02—Details
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K75/00—Accessories for fishing nets; Details of fishing nets, e.g. structure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Environmental Sciences (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
1337079 Pressure gauges MORSKI INSTYTUT RYBACKI 19 April 1971 [18 Feb 1970] 23139/71 Heading G1L In a device for measuring the vertical distance between two underwater elements of a trawl gear, such as the mouth of a net 31, an elastic vessel 4, connected to an elastic membrane 12 by a conduit 5, is attached to the bottom line 34 of the net 31 and an instrument 32 is attached to the headline 33 and the arrangement is such that pressure on the vessel 4, filled with a gas such as air, is transmitted to the membrane 12 which in turn transmits such pressure to a second incompressible liquid such as silicon oil, in an anti-chamber 11 and if the pressure is lower than the pressure internally of an encased bellows 1 caused by the surrounding environment, the bellows 1 alters in length and, through a follower 18, moves a pen system 3 over a driven tape system 21-23. If the pressure exerted by the liquid 11 on an encased bellows 15 exceeds that of the surrounding environment the bellows 15 alters in length to move a ported piston to actuate a cutoff valve 2, to shut off the pressure supplied to the external of the bellows 1 through a conduit 10. The driven tape system 21-23 is automatically switched on at approximately a depth of 5 metres by an hydrostatic switch.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL138907A PL67545B1 (en) | 1970-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1337079A true GB1337079A (en) | 1973-11-14 |
Family
ID=19951318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2313971A Expired GB1337079A (en) | 1970-02-18 | 1971-04-19 | Device for measuring the distance between two underwater elements of trawl gear especially the vertical distance |
Country Status (3)
| Country | Link |
|---|---|
| GB (1) | GB1337079A (en) |
| RO (1) | RO56461A (en) |
| SU (1) | SU398017A3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0263615A1 (en) * | 1986-09-29 | 1988-04-13 | Salubre Investments Limited | A device for use in a fishing trawl |
-
1971
- 1971-02-10 SU SU1623313A patent/SU398017A3/ru active
- 1971-02-18 RO RO6598571A patent/RO56461A/ro unknown
- 1971-04-19 GB GB2313971A patent/GB1337079A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0263615A1 (en) * | 1986-09-29 | 1988-04-13 | Salubre Investments Limited | A device for use in a fishing trawl |
Also Published As
| Publication number | Publication date |
|---|---|
| RO56461A (en) | 1974-07-01 |
| SU398017A3 (en) | 1973-09-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |