DE909515C - Device for measuring the degree of filling of fishing nets - Google Patents

Device for measuring the degree of filling of fishing nets

Info

Publication number
DE909515C
DE909515C DEA16088A DEA0016088A DE909515C DE 909515 C DE909515 C DE 909515C DE A16088 A DEA16088 A DE A16088A DE A0016088 A DEA0016088 A DE A0016088A DE 909515 C DE909515 C DE 909515C
Authority
DE
Germany
Prior art keywords
filling
degree
measuring
fishing nets
board
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
Application number
DEA16088A
Other languages
German (de)
Inventor
Dr Willy Kunze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Atlas Werke AG
Original Assignee
Atlas Werke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Atlas Werke AG filed Critical Atlas Werke AG
Priority to DEA16088A priority Critical patent/DE909515C/en
Application granted granted Critical
Publication of DE909515C publication Critical patent/DE909515C/en
Expired legal-status Critical Current

Links

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
    • A01K73/00—Drawn nets
    • A01K73/02—Trawling nets
    • A01K73/10—Determining the quantity of the catch, e.g. by the pull or drag on the lines

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)

Description

AUSGEGEBEN AM 22. APRIL 1954ISSUED APRIL 22, 1954

A 16088 III A 16088 III 11 45h45h

Dr. Willy Kunze, BremenDr. Willy Kunze, Bremen

ist als Erfinder genannt wordenhas been named as the inventor

Zur Messung des Füllgrades von Fischnetzen sind die verschiedenartigsten Vorrichtungen bekannt. Meistens wird der vom Netz ausgeübte Zug als Maß für den Füllgrad benutzt. Der vorliegenden Erfindung liegt die Erkenntnis zugrunde, daß der Abstand der Scherbretter sich in Abhängigkeit von dem Füllgrad des Netzes ändert und insbesondere gegen Ende des Füllvorganges einer raschen Verkleinerung unterworfen ist. Erfindungsgemäß wird dieser Vorgang zur Messung des Füllgrades ausgenutzt, indem man den Abstand der Scherbretter voneinander bestimmt und in geeigneter Weise auf ein Füllgradanzeigegerät an Bord des Schiffes überträgt.A wide variety of devices are known for measuring the degree of filling of fishing nets. Usually the tension exerted by the network is used as a measure of the degree of filling. The present The invention is based on the knowledge that the distance between the otter boards is dependent of the degree of filling of the network changes and in particular a rapid one towards the end of the filling process Is subject to downsizing. According to the invention, this process is used to measure the degree of filling exploited by determining the spacing of the otter boards from one another and in a suitable manner Way to a level indicator on board the ship.

Die Messung des Scherbrettabstandes kann auf mechanischem Wege durch einen Federzug erfolgen, indem man z. B. einen Stahldraht von einer Federrolle abrollen läßt, die hinter einem Scherbrett angeordnet ist, während das andere Ende des Drahtes am anderen Scherbrett befestigt ist. Durch den Federzug wird ein Regelvorgang betätigt, der die eingestellte Länge des von der Federrolle abgelaufenen Stahldrahtes am Bordgerät zur Anzeige bringt. Für die Übertragung der Messung von denThe measurement of the escherboard distance can be done mechanically by means of a spring balancer, by z. B. can roll a steel wire from a spring roll behind an otter board is arranged, while the other end of the wire is attached to the other otter board. By the spring balancer is actuated a control process, which the set length of the expired by the spring roller Steel wire on the on-board device to display. For the transfer of the measurement from the

Scherbrettern zum Bordgerät können z. B. akustische Signale verwendet werden. Diese Art der Anzeige ist im allgemeinen vorteilhafter als die unmittelbare elektrische Übertragung durch ein Kabel. Durch den Federzug kann zur akustischen Übertragung beispielsweise ein Signalsender an einem der Scherbretter so beeinflußt werden, daß sich mit der Länge des Federzuges die Frequenz oder Häufigkeit der vom Sender ausgesandten Signale ändert, die dann als Maß für den Füllgrad des Fischnetzes benutzt wird und durch Messung des Impulsabstandes oder der Impulsfrequenz zur Anzeige gebracht oder abgehört wird.Otter boards to the on-board device can, for. B. acoustic signals are used. This type of display is generally more beneficial than that direct electrical transmission through a cable. The spring balancer can be used for acoustic Transmission, for example, a signal transmitter on one of the otter boards can be influenced in such a way that The frequency or frequency of the transmitted by the transmitter with the length of the spring balancer Signals changes, which is then used as a measure of the degree of filling of the fishing net and by measurement the pulse spacing or the pulse frequency is displayed or monitored.

Gegebenenfalls können auch noch andere Kriterien zur Bestimmung des Füllgrades herangezogen werden, so daß der Scherbrettabstand zur Gesamtmessung nur mehr oder weniger beiträgt.If necessary, other criteria can also be used to determine the degree of filling so that the otter board distance only contributes more or less to the overall measurement.

Claims (2)

PATENTANSPRÜCHE:PATENT CLAIMS: 1. Vorrichtung zum Messen des Füllgrades von Fischnetzen, dadurch gekennzeichnet, daß der Abstand der Scherbretter voneinander gemessen und als Maß für den Füllgrad zur Anzeige gebracht wird.1. Device for measuring the degree of filling of fishing nets, characterized in that the distance of the otter boards from each other measured and as a measure for the degree of filling for the display is brought. 2. Vorrichtung nach Anspruch i, dadurch gekennzeichnet, daß die Scherbretter durch einen Federzug miteinander verbunden sind, dessen Einstellung vorzugsweise durch akustische Signale an Bord zur Anzeige gebracht wird.2. Device according to claim i, characterized in that that the otter boards are connected to one another by a spring balancer, of which Setting is preferably indicated by acoustic signals on board. © 5919 4.54© 5919 4.54
DEA16088A 1952-06-28 1952-06-28 Device for measuring the degree of filling of fishing nets Expired DE909515C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA16088A DE909515C (en) 1952-06-28 1952-06-28 Device for measuring the degree of filling of fishing nets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA16088A DE909515C (en) 1952-06-28 1952-06-28 Device for measuring the degree of filling of fishing nets

Publications (1)

Publication Number Publication Date
DE909515C true DE909515C (en) 1954-04-22

Family

ID=6923564

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA16088A Expired DE909515C (en) 1952-06-28 1952-06-28 Device for measuring the degree of filling of fishing nets

Country Status (1)

Country Link
DE (1) DE909515C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1127139B (en) * 1960-05-20 1962-04-05 Atlas Werke Ag Process and device for the correct adjustment of the length of the rope lines to the otter boards in fishing trawls

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1127139B (en) * 1960-05-20 1962-04-05 Atlas Werke Ag Process and device for the correct adjustment of the length of the rope lines to the otter boards in fishing trawls

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