DE507943C - Shear device for trawls with strips that shear by engaging in the seabed - Google Patents
Shear device for trawls with strips that shear by engaging in the seabedInfo
- Publication number
- DE507943C DE507943C DEO18107D DEO0018107D DE507943C DE 507943 C DE507943 C DE 507943C DE O18107 D DEO18107 D DE O18107D DE O0018107 D DEO0018107 D DE O0018107D DE 507943 C DE507943 C DE 507943C
- Authority
- DE
- Germany
- Prior art keywords
- plate
- strips
- shear
- tip
- longitudinal axis
- 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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K73/00—Drawn nets
- A01K73/02—Trawling nets
- A01K73/04—Devices for spreading or positioning, e.g. control thereof
- A01K73/045—Devices for spreading or positioning, e.g. control thereof for lateral sheering, e.g. trawl boards
Description
Die Erfindung bezieht sich auf Einrichtungen für Schleppnetze, durch die die Netze während des Schleppens in seitlicher Richtung offen gehalten werden. Übliche Einrichtungen hierfür sind an den Netzflügeln oder vor diesen angeordnete Scherbretter, die infolge ihrer Schrägstellung zur Zugrichtung beim Schleppen durch den Druck des Wassers" auseinanderstreben undThe invention relates to devices for trawls through which the nets be kept open while towing sideways. The usual facilities for this are on the net wings or otter boards arranged in front of these, which as a result of their inclination to the direction of pull when towing through the Pressure of water "diverge and
ίο damit das Netz der Breite nach offen halten. Zur Unterstützung der durch den Wasserdruck hervorgerufenen Scherbewegung solcher Scherbretter hat man sie am unteren, auf dem Meeresboden schleifenden Teil auch mit Leisten oder Rippen versehen, die in den Meeresboden eingreifen. Die Erfindung betrifft im besonderen eine Einrichtung, bei deren Gebrauch unter Fortfall von Scherbrettern die Scherwirkung lediglich dadurch erreicht wird, daß eine längliche, in ihrer Längsachsenrichtung zwischen Netz und Zugleine geschaltete Gewichtsplatte vorgesehen ist, bei der Leisten schräg zur Plattenlängsachse angeordnet sind, die durch Eingriff in den Meeresboden beim Betrieb die Scherwirkung hervorrufen.ίο keep the net width open. To support the shear movement caused by the water pressure On the lower part of the otter boards, which rubbing against the seabed, they also have strips or ribs that protrude into the Intervene in the seabed. The invention relates in particular to a device in their use with the omission of otter boards the shear effect only thereby what is achieved is that an elongated, in its longitudinal axis direction between the net and the pull line Switched weight plate is provided, with the bars at an angle to the plate's longitudinal axis are arranged, which by engaging the seabed during operation, the shear effect cause.
In der beiliegenden Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigenAn exemplary embodiment of the invention is shown in the accompanying drawing. Show it
Abb. ι in perspektivischer Ansicht ein Schleppnetz mit an seinen Flügeln angeordneten Schereinrichtungen gemäß Erfindung.Fig. Ι a perspective view of a trawl with arranged on its wings Shearing devices according to the invention.
Abb. 2 und 3 sind Ausführungsformen von Schereinrichtungen gemäß Erfindung.Figs. 2 and 3 are embodiments of shearing devices according to the invention.
Nach Abb. 1 sind zwischen die Flügelenden des Netzes und die Zugseile 6 Schereinrichtungen 7 gemäß der Erfindung geschaltet, die mit an ihnen angeordneten, beim Schleppen schräg zur Zugrichtung liegenden Leisten derart in den Meeresboden eingreifen, daß sie beim Schleppen auseinanderscheren und damit das Netz seitlich offen halten.According to Fig. 1 there are 6 shear devices between the wing tips of the network and the pull cords 7 switched according to the invention, the with arranged on them, lying at an angle to the pulling direction when towing Bars engage in the seabed in such a way that they shear apart when being towed and thus keep the net open at the sides.
Nach der bevorzugten Ausführungsform gemäß Abb. 2 besteht jede Schereinrichtung aus einer im wesentlichen flachen länglichen Gewichtsplatte 7 aus Gußeisen oder Stahl, die in einer Richtung ihrer Längsachsenrichtung bei 8 zugespitzt ist und deren Seiten'ianten in der entgegengesetzten Richtung ihrer Längsachsenrichtung aufeinander zulaufen. Das der Spitze entgegengesetzte Ende der Platte ist mit einem Schlitz 6" versehen, der zur Be-According to the preferred embodiment according to FIG. 2, each shear device consists of an essentially flat elongated weight plate 7 made of cast iron or steel, which is pointed in one direction of its longitudinal axis direction at 8 and the sides of which converge in the opposite direction of its longitudinal axis direction. The end of the plate opposite the tip is provided with a 6 " slot which is used for loading
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB507943X | 1928-10-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE507943C true DE507943C (en) | 1930-09-22 |
Family
ID=10457384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEO18107D Expired DE507943C (en) | 1928-10-16 | 1929-04-14 | Shear device for trawls with strips that shear by engaging in the seabed |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE507943C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11751551B2 (en) * | 2021-04-15 | 2023-09-12 | Bradley David Cahoon | Hydrofoil fishing lure apparatus |
-
1929
- 1929-04-14 DE DEO18107D patent/DE507943C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11751551B2 (en) * | 2021-04-15 | 2023-09-12 | Bradley David Cahoon | Hydrofoil fishing lure apparatus |
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