GB1343806A - Device for measuring and recording the horizontal distance between two underwater elements of a trawl unit especially the horizontal width at the mouth of a fishing net - Google Patents
Device for measuring and recording the horizontal distance between two underwater elements of a trawl unit especially the horizontal width at the mouth of a fishing netInfo
- Publication number
- GB1343806A GB1343806A GB2347671A GB2347671A GB1343806A GB 1343806 A GB1343806 A GB 1343806A GB 2347671 A GB2347671 A GB 2347671A GB 2347671 A GB2347671 A GB 2347671A GB 1343806 A GB1343806 A GB 1343806A
- Authority
- GB
- United Kingdom
- Prior art keywords
- points
- distance
- cord
- drums
- recording
- 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
- 230000002706 hydrostatic effect Effects 0.000 abstract 1
Classifications
-
- 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
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
1343806 Measuring length, recording MORSKI INSTYTUT RYBACKI 19 April 1971 [24 Feb 1970] 23476/71 Heading G1J, G1M Apparatus for measuring and recording the distance between two points, e.g the width of the opening of a trawl net when in use, comprises a pair of co-axial drums 6, 7 on which are wound cords 3, 4, the cord 3 being arranged to be unwound from its associated drum 6 by an amount indicative of the distance between the points, such distance being recorded on a recorder actuated by the rotation of the drum 6. As shown, the cord 4 which has a float 5 at its free end rotationally positions the drums 6,7, when one end of the cord 3 is attached to one of the two points and the drums are located at the other of the points, so as to tension the cord 3 by a pre-determined amount, the rotational position of the drum 6, corresponding to the cord length between the two points, being transmitted by gears to a reciprocatable pen 12 mounted on guides 25, 26. A tape driven at constant speed by an electric motor from one roller to another arranged below the pen 12 receives a plot indicative of the distance or change of distance 'with time between the two points. A pressure responsive electric switch (16) Fig. 3, (not shown) protected by a cover (17) on one end of a cylindrical housing 2 in which the recorder is located and to which the drums are connected is arranged to respond to hydrostatic pressure and actuate the drive motor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL4512470 | 1970-02-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1343806A true GB1343806A (en) | 1974-01-16 |
Family
ID=19936346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2347671A Expired GB1343806A (en) | 1970-02-24 | 1971-04-19 | Device for measuring and recording the horizontal distance between two underwater elements of a trawl unit especially the horizontal width at the mouth of a fishing net |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB1343806A (en) |
| SU (1) | SU470098A3 (en) |
Cited By (3)
| 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 |
| DE102005037862B3 (en) * | 2005-07-26 | 2007-01-04 | Asm Automation Sensorik Messtechnik Gmbh | Explosion proof position sensor has shaft joining flat spiral spring and angle encoder in external pressure proor housing with measurement cable drum in unsealed housing |
| US7392597B2 (en) | 2005-08-10 | 2008-07-01 | Asm Automation Sensorik Messtechnik Gmbh | Position sensor |
-
1971
- 1971-02-25 SU SU711627900A patent/SU470098A3/en active
- 1971-04-19 GB GB2347671A patent/GB1343806A/en not_active Expired
Cited By (3)
| 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 |
| DE102005037862B3 (en) * | 2005-07-26 | 2007-01-04 | Asm Automation Sensorik Messtechnik Gmbh | Explosion proof position sensor has shaft joining flat spiral spring and angle encoder in external pressure proor housing with measurement cable drum in unsealed housing |
| US7392597B2 (en) | 2005-08-10 | 2008-07-01 | Asm Automation Sensorik Messtechnik Gmbh | Position sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| SU470098A3 (en) | 1975-05-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |