AT392721B

AT392721B - DEVICE FOR KEEPING SNAILS AWAY

Info

Publication number: AT392721B
Application number: AT35990A
Authority: AT
Original assignee: Ploebst Siegfried; Kaltner Josef
Priority date: 1990-02-16
Filing date: 1990-02-16
Publication date: 1991-05-27
Also published as: ATA35990A; DE4004219A1

Description

AT 392 721 BAT 392 721 B

Die Erfindung bezieht sich auf eine Vorrichtung zum Femhalten von Schnecken von Gärten und anderen Anbauflächen mit einem langgestreckten, elektrisch leitfähigen Träger, der mit einer Längsseite im Erdboden angeordnet wird, und einem im Abstand vom Erdboden sich entlang dem Träger erstreckenden und vom Träger durch eine elektrische Isolierung getrennten, elektrisch leitfähigen Band, wobei der Träger an den einen und das 5 elektrisch leitfähige Band an den anderen Pol einer Kleinspannungsquelle angeschlossen sind.The invention relates to a device for holding snails from gardens and other cultivated areas with an elongated, electrically conductive support, which is arranged with a long side in the ground, and a spaced from the ground extending along the support and from the support by an electrical Isolation separate, electrically conductive tape, the carrier is connected to one and the 5 electrically conductive tape to the other pole of a low voltage source.

Eine derartige Vorrichtung ist bereits bekannt (DE-OS 29 18 1S2, Fig. 3). Das elektrisch leitfähige Band liegt dabei unter Zwischenschaltung der Isolierung mit seiner ganzen Breite auf dem Träger auf. Wenn die bekannte Vorrichtung mit einer Batterie betrieben wird, hat sich gezeigt, daß sich vor allem bei feuchter Witterung die Batterie außerordentlich schnell entleert 10 Für das Entleeren der Batterie bei Feuchtigkeit also insbesondere Regen, sind bei dar bekannten Vorrichtung im wesentlichen zwei Ursachen verantwortlich zu machen.Such a device is already known (DE-OS 29 18 1S2, Fig. 3). The entire width of the electrically conductive tape lies on the support with the interposition of the insulation. If the known device is operated with a battery, it has been found that the battery drains extremely quickly, especially in damp weather. For the draining of the battery in moisture, in particular rain, there are essentially two causes responsible for the known device .

Zum einen ist es Wasser, das eine Strombrücke zwischen dem elektrisch leitfähigen Band und dem elektrisch leitfähigen Träger bildet. Zum anderen wird die Strombrücke durch Dreck gebildet der beim Regen nach oben spritzt 15 Weiterhin ist es bekannt, zwei im Abstand voneinander angeordnete Leit» auf einem Träger aus elektrisch isolierendem Material anzuordnen (z. B. DE-OS 29 18 152, Fig. 1; DE-OS 28 39 261). Damit sich bei diesen Vorrichtungen die Batterie nicht vorzeitig entlädt ist es erforderlich, die beiden Leit» in einem großen Abstand voneinander anzuordnen, damit sich durch Feuchtigkeit keine Strombrücken dazwischen bilden können. Es hat sich aber herausgestellt daß dann diese Vorrichtungen von Schnecken überwunden werden können. Um die 20 Schnecken femzuhalten, ist es erforderlich, daß der Schneckenkörper längere Zeit einem Potentialunterschied von mehreren Volt ausgesetzt wird. Schnecken sind allerdings außerordentlich geschickt und l»nfähig. Wenn sie beim senkrechten Hinaufkriechen durch die Berührung beider Leiter eine unangenehme Erfahrung machen, ändern sie ihre Kriechrichtung mehr zur Waagrechten, so daß sie sich schräg üb» den oberen Leiter hinwegbewegen können, ohne in Kontakt mit dem unteren Leiter zu sein. 25 Aufgabe der Erfindung ist es, eine wirksame, einfach aufgebaute und nur wenig Strom verbrauchende Vorrichtung zum Femhalten von Schnecken b»eitzuhalten.Firstly, it is water that forms a current bridge between the electrically conductive band and the electrically conductive carrier. On the other hand, the current bridge is formed by dirt that splashes upwards when it rains. Furthermore, it is known to arrange two conductors arranged at a distance from one another on a carrier made of electrically insulating material (for example DE-OS 29 18 152, FIG. 1) ; DE-OS 28 39 261). So that the battery in these devices does not discharge prematurely, it is necessary to arrange the two conductors at a large distance from one another so that no current bridges can form between them as a result of moisture. However, it has been found that these devices can then be overcome by snails. In order to keep the 20 screws away, it is necessary that the screw body is exposed to a potential difference of several volts for a long time. However, snails are extraordinarily skillful and capable. If they experience an unpleasant experience when they crawl vertically by touching both conductors, they change their crawl direction more to the horizontal so that they can move diagonally over the upper conductor without being in contact with the lower conductor. The object of the invention is to provide an effective, simply constructed and low-power device for holding screws.

Diese Aufgabe wird erfindungsgemäß durch die im Anspruch 1 gekennzeichnete Vorrichtung gelöstThis object is achieved according to the invention by the device characterized in claim 1

Nach der Erfindung ist also das elektrisch leitfähige Band mit seiner unteren Kante vom Träger weg abgewinkelt. Diese Kante bildet damit eine Abtropfkante, von der die Feuchtigkeit abtropft, ohne daß eine 30 Strombriicke zwischen dem elektrisch leitfähigen Band und dem Träger entsteht. Der Abstand der abgewinkelten unteren Kante des elektrisch leitfähigen Bandes von dem Träger darf all»dings nicht so groß sein, d. h. keinesfalls größer als die Breite des Körpers der abzuwehrenden Schnecken. D. h., selbst dann, wenn die Schnecke die Potentialdifferenz zwischen dem elektrisch leitfähigen Band und dem Träger durch Kriechen in eine weitgehend waagrechte Richtung zu überwinden versucht, gelingt es ihr nicht, diese Potentialdifferenz an ihrem Körp» zu 35 beseitigen. Sie ist damit dieser Potentialdifferenz derart lange ausgesetzt, daß sie ihre Versuche, die Vorrichtung zu überwinden, aufgibt.According to the invention, the electrically conductive band is angled away from the carrier with its lower edge. This edge thus forms a drip edge from which the moisture drips off without creating a current bridge between the electrically conductive band and the carrier. However, the distance between the angled lower edge of the electrically conductive tape and the carrier must not be so great, i. H. in no case larger than the width of the body of the snails to be warded off. That is, even if the screw tries to overcome the potential difference between the electrically conductive tape and the carrier by creeping in a largely horizontal direction, it is unable to eliminate this potential difference on its body. It is thus exposed to this potential difference for so long that it abandons its attempts to overcome the device.

Weiterhin ist erfindungsgemäß das elektrisch leitfähige Band mit Abstand von der elektrischen Isolierung angeordnet. Damit kann in den Spalt, der dadurch zwischen dem elektrisch leitfähigen Band und der Isolierung geschaffen wird, z. B. bei Regen Wasser laufen, wodurch Dreck weggespült wird, der zwischen die untere Kante 40 des elektrisch leitfähigen Bandes und den Träger gespritzt wird.Furthermore, according to the invention, the electrically conductive tape is arranged at a distance from the electrical insulation. This can in the gap, which is thereby created between the electrically conductive tape and the insulation, for. B. run in the rain water, thereby washing away dirt that is sprayed between the lower edge 40 of the electrically conductive tape and the carrier.

Die elektrische Isolierung der erfindungsgemäßen Vorrichtung wird vorzugsweise durch ein Kunststoffband gebildet, das mit seiner unteren Kante wie das elektrisch leitfähige Band vom Träger weg abgewinkelt ist. Damit fließt das Wasser, also beispielsweise der Regen, der in den Spalt zwischen dem elektrisch leitfähigen Band und dem Kunststoffband fällt, zur unteren Kante des elektrisch leitfähigen Bandes hin, wodurch die Spülwirkung 45 gefördert wird. Zum anderen tropft das Wasser damit von der unteren Kante des elektrisch leitfähigen Bandes auf die untere Kante des Kunststoffbandes und von dort zum Boden. D. h., die vom Träger weggewinkelte untere Kante des Kunststoffbandes stellt eine weitere Barriere für die Ausbildung einer Strombrücke zwischen dem elektrisch leitenden Band und dem Träg» dar.The electrical insulation of the device according to the invention is preferably formed by a plastic band which is angled away from the carrier with its lower edge like the electrically conductive band. The water, that is to say the rain, for example, which falls into the gap between the electrically conductive band and the plastic band thus flows to the lower edge of the electrically conductive band, as a result of which the flushing action 45 is promoted. On the other hand, the water drips from the lower edge of the electrically conductive tape onto the lower edge of the plastic tape and from there to the floor. In other words, the lower edge of the plastic band, which is angled away from the carrier, represents a further barrier for the formation of a current bridge between the electrically conductive band and the carrier.

Das Kunststoffband steht vorzugsweise über die obere Kante des Trägers vor. Damit stützt sich Gras, das sich 50 von oben auf die Vorrichtung legt, auf der oberen, vorstehenden Kante des Kunststoffbandes ab, ohne daß es, insbesondere wenn es feucht ist, eine Strombrücke zwischen dem Träger und dem elektrisch leitfähigen Band bilden kann.The plastic tape preferably projects over the top edge of the carrier. In this way, grass, which lies on the device from above, is supported on the upper, projecting edge of the plastic band, without it being able to form a current bridge between the carrier and the electrically conductive band, in particular when it is moist.

Damit das überstehende Kunststoffband nicht sehr viel breiter ausgebildet werden muß als das elektrisch leitfähige Band, ist es ferner vorteilhaft, die obere Längskante des elektrisch leitfähigen Bandes und die obere 55 Längskante des Trägers in gleicher Höhe anzuordnen. Zugleich erreicht dadurch der Abstand zwischen dem Erdboden und dem elektrisch leitfähigen Band sein Maximum und damit die zum elektrisch leitfähigen Band spritzende Dreckmenge ihr Minimum.So that the protruding plastic tape does not have to be made much wider than the electrically conductive tape, it is also advantageous to arrange the upper longitudinal edge of the electrically conductive tape and the upper longitudinal edge of the carrier at the same height. At the same time, the distance between the ground and the electrically conductive band reaches its maximum, and thus the amount of dirt spraying into the electrically conductive band reaches its minimum.

Vorzugsweise sind das elektrisch leitfähige Band und das Kunststoffband mit elektrisch nicht leitenden Zapfen an dem Träger befestigbar, wobei auf den Zapfen zwischen dem elektrisch leitfähigen Band und dem 60 Kunststoffband Scheiben-Ringe vorgesehen sind, um das elektrisch leitfähige Band und das Kunststoffband im Abstand voneinander anzuordnen. Damit dient ein und dasselbe Befestigungsmittel zugleich zur Befestigung des elektrisch leitfähigen Bandes und des Kunststoffbandes am Träger sowie zur Abstandshalterung des elektrisch -2-Preferably, the electrically conductive band and the plastic band can be fastened to the carrier with electrically non-conductive pegs, disk rings being provided on the pegs between the electrically conductive band and the 60 plastic band in order to arrange the electrically conductive band and the plastic band at a distance from one another . Thus, one and the same fastening means serves at the same time for fastening the electrically conductive band and the plastic band to the carrier and for spacing the electrically -2-

Claims

AT 392 721 B conductive tape from plastic tape. The pins can be formed by any pin-shaped fastening means, for example by screws. However, they preferably consist of rivets, in particular plastic rivets, since these can be obtained inexpensively and are easy to attach. The electrically conductive material from which the carrier and the electrically conductive band are made is preferably a metal sheet, in particular aluminum sheet, since it is corrosion-resistant and easy to machine. However, cheap galvanized steel sheet can also be used, for example. The width or height of the carrier is preferably between 10 and 20 cm. In any case, the carrier should be wide enough that it can be buried at a depth of about 5 to 7 cm in the ground, so that the snails cannot dig into the garden under the carrier. The device also has all the properties of a garden boundary. It can also be bent slightly, for example at an angle, to form a corner of the garden boundary. The device according to the invention can be produced in pieces with a length of, for example, 1 m. The pieces can be joined together by screws. Such a connection also creates a hinge, so that the device composed of the individual pieces and enclosing the garden can be adapted to the course of the terrain. The width of the electrically conductive tape is preferably in the range of 1 to 4 cm. The distance between the electrically conductive tape and the plastic tape is preferably about 1 to 5 mm. Apart from the board over the carrier, the plastic tape preferably has essentially the same width as the electrically conductive tape. Among others for optical reasons, the plastic band is preferably made of a transparent plastic film. Batteries, in particular rechargeable batteries, are preferably used as the low-voltage source. A voltage monitor with an optical or acoustic signal transmitter can be provided, which emits signals when the voltage decreases above a predetermined value. A voltage of 2 to 10 V is generally sufficient to repel snails. Furthermore, an electronic switching element is preferably provided, via which the device is pulsed under voltage. An embodiment of the device according to the invention is explained below using the drawing, for example. 1 shows an external view of the device with parts broken away; and FIG. 2 shows a section along the line (ΙΙ-Π) in FIG. 1 with parts broken away. The device has an elongated, band-shaped, electrically conductive support (1), which consists, for example, of sheet metal. The support (1) is buried in the ground up to the height of the line (2). An electrically conductive band (3) extends along the upper edge of the carrier (1) and can also consist, for example, of sheet metal. Furthermore, a tape (4) made of plastic film extends between the carrier (1) and the electrically conductive tape (3). To attach the electrically conductive tape (3) and the plastic film tape (4) to the carrier (1), plastic rivets (5), (6) are provided, for example, which, as shown in Fig. 2, the electrically conductive tape ( 3), penetrate the plastic band (5) and the carrier. On the rivets (5), (6) between the electrically conductive band (3) and the plastic band (4), discs (7) are provided, through which the electrically conductive band (3) and the plastic band (4) form a gap (8) are spaced from each other. The upper edges (9), (10) of the carrier (1) and the electrically conductive band (3) are arranged at the same height, while the upper edge (11) of the plastic band (4) over the upper edge (9), ( 10) of the carrier and the electrically conductive band (3) protrudes in the lower region, that is to say with their edges (12), (13), the electrically conductive band (3) and the plastic band (4) are angled away from the carrier (1). Apart from its upper edge (11) and its lower angled edge (13), the plastic band (4) is in full contact with the carrier (1). Apart from its lower angled edge (12), the electrically conductive band (3) lies in a plane that runs parallel to the plane of the carrier (1) Conductive carrier, which is arranged with a longitudinal edge in the ground, and an electrically conductive band which extends at a distance from the ground along the carrier and is separated from the carrier by electrical insulation, the carrier on one pole and the electrically conductive band on the other pole a low voltage source are connected, characterized in that the electrically conductive tape -3- AT 392 721B (3) is arranged at a distance from the electrical insulation and is angled away with its lower edge (12) away from the carrier (1).

2. Device according to claim 1, characterized in that the electrical insulation is formed by a plastic band (4) which is angled away with its lower edge (13) from the carrier (1).

3. Apparatus according to claim 2, characterized in that the plastic band (4) protrudes over the upper longitudinal edge (9) of the carrier (1) and the upper longitudinal edge (10) of the electrically conductive band (3)

4. Device according to one of the preceding claims, characterized in that the upper longitudinal edge (9) of the carrier (1) and the upper longitudinal edge (10) of the electrically conductive tape (3) are arranged at the same height.

5. Device according to one of claims 2 to 4, characterized in that the electrically conductive tape (3) and the plastic tape (4) with electrically non-conductive pins on the carrier (1) are attached and on the pin between the electrically conductive tape (3) and the plastic band (4) disks (7) for arranging the electrically conductive band (3) and the plastic band (4) are provided at a distance from one another.

6. The device according to claim 5, characterized in that the pins are formed by rivets (5,6). Add 1 sheet of drawing -4-