DE508039C - Otter board with individual otter boards arranged like a backdrop in a frame - Google Patents

Otter board with individual otter boards arranged like a backdrop in a frame

Info

Publication number
DE508039C
DE508039C DENDAT508039D DE508039DD DE508039C DE 508039 C DE508039 C DE 508039C DE NDAT508039 D DENDAT508039 D DE NDAT508039D DE 508039D D DE508039D D DE 508039DD DE 508039 C DE508039 C DE 508039C
Authority
DE
Germany
Prior art keywords
otter
individual
backdrop
frame
boards arranged
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
DENDAT508039D
Other languages
German (de)
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.)
WILHELM SOEHLE
Original Assignee
WILHELM SOEHLE
Publication date
Application granted granted Critical
Publication of DE508039C publication Critical patent/DE508039C/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
    • A01K73/04—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

Landscapes

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

Description

Gegenstand der Erfindung ist ein Scherbrett für Schleppnetze. Das Spreizen des Netzes wurde bisher fast nur durch flache Holzbretter bewirkt. Gemäß der Erfindung ist dieses Flachbrett durch gekrümmte Einzelscherbretter ersetzt worden.The invention relates to an otter board for trawls. Spreading the Up to now, the net has almost only been created by flat wooden boards. According to the invention this flat board has been replaced by curved individual cutters.

Der Gegenstand ist zeichnerisch dargestellt, und zwar zeigt:The object is shown in the drawing, namely shows:

Abb. ι eine perspektivische Darstellung des ίο Brettes,Fig. Ι a perspective view of the ίο board,

Abb. 2 einen Längsschnitt,Fig. 2 a longitudinal section,

Abb. 3 einen Querschnitt.Fig. 3 shows a cross section.

An Stelle der geraden Fläche treten gekrümmte eiserne Einzelscherbretter a, die in einem Rahmen b kulissenartig befestigt sind. Für die Befestigung des Netzes sind ösen c angebracht.In place of the straight surface, there are curved iron individual cutters a, which are fixed in a frame b like a backdrop. There are eyelets c to attach the net.

Die Krampen d dienen zur Aufnahme des Zuges der Schleppleine e. The staples d serve to take up the pull of the tow line e.

Der Vorteil der neuen Anordnung besteht ao darin, daß durch die Krümmung der Einzelscherbretter die Scherkraft bedeutend vergrößert und der Widerstand verringert wird,The advantage of the new arrangement is that the curvature of the individual shearboards the shear force is significantly increased and the resistance is reduced,

Claims (1)

Patentanspruch: 2_Claim: 2 _ Scherbrett mit kulissenartig in einem Rahmen angeordneten Einzelscherbrettern, deren Scherflächen in der Arbeitsstellung von der vorderen Rahmenebene aus in der Richtung nach dem Netz verlaufen, dadurch gekennzeichnet, daß die Einzelscherbretter in dieser Richtung nach der vorderen Rahmenebene zu tragflächenförmig gelbogen sind.Otter board with single otter boards arranged like a backdrop in a frame, the shear surfaces of which in the working position run from the front frame plane in the direction towards the net, characterized in that the individual shearboards in this direction to the front frame plane to form an airfoil are yellowogen. Hierzu ι Blatt ZeichnungenFor this purpose ι sheet of drawings
DENDAT508039D Otter board with individual otter boards arranged like a backdrop in a frame Expired DE508039C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE508039T

Publications (1)

Publication Number Publication Date
DE508039C true DE508039C (en) 1930-09-23

Family

ID=6546884

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT508039D Expired DE508039C (en) Otter board with individual otter boards arranged like a backdrop in a frame

Country Status (1)

Country Link
DE (1) DE508039C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3410014A (en) * 1965-04-26 1968-11-12 Jenssen Jens William Trawl boards
WO1982002646A1 (en) * 1981-02-12 1982-08-19 Olav H Otterlei A trawler door
FR2591755A1 (en) * 1985-12-18 1987-06-19 Geco As DEVICE FOR CONTROLLING CABLES WITH SEISMIC EQUIPMENT, ESPECIALLY FOR CANON CABLES COMPRISING ONE OR MORE CANON ARRAYS
US4879830A (en) * 1988-12-16 1989-11-14 Quick Freddie W Trawl door

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3410014A (en) * 1965-04-26 1968-11-12 Jenssen Jens William Trawl boards
WO1982002646A1 (en) * 1981-02-12 1982-08-19 Olav H Otterlei A trawler door
FR2591755A1 (en) * 1985-12-18 1987-06-19 Geco As DEVICE FOR CONTROLLING CABLES WITH SEISMIC EQUIPMENT, ESPECIALLY FOR CANON CABLES COMPRISING ONE OR MORE CANON ARRAYS
US4879830A (en) * 1988-12-16 1989-11-14 Quick Freddie W Trawl door

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