Fishing – trapping – and vermin destroying – Fishing – Bait distributors – e.g. – chumming devices
Patent
1998-12-31
2000-07-25
Lavinder, Jack W.
Fishing, trapping, and vermin destroying
Fishing
Bait distributors, e.g., chumming devices
43 4206, A01K 9702
Patent
active
06092327&
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a device for use in connection with fishing, comprising a container adapted for dispensing of odor agents under water.
BACKGROUND OF THE INVENTION
Many kinds of fish are completely dependent on the sense of smell in order to find food. This in particular applies to demersal fish species which often live in environments (great depths, darkness) where odor agents dispensed from prey animals are the only signals which enable the fish to discover and localize its food. Advantage is derived from this circumstance when fishing with tackles based on bait, as for instance longline and fish pot.
Chemical analyses have shown that the concentration of odor agents dispensed from natural bait diminishes very rapidly. Measurements have been made which show that the sinking time of tackles based on bait is relatively long. A longline uses for instance about one hour in sinking down to a depth of 450 meters. This means that the bait has dispensed the essential of its odor agents before it reaches the relevant depth for catching fish, and this circumstance cannot be affected.
Different devices for dispensing odor agents under water in connection with fishing are known. U.S. Pat. No. 2,791,058 shows an elongate container having several apertures, whereby a water soluble bladder containing an odor agent is situated inside the container, so that the odor agent will trickle out while the bladder is dissolved. U.S. Pat. No. 2,922,246 also shows a container containing a bladder with odor agent. The container has an aperture at one end and a nozzle at the other end, and by being pulled in the direction of the end having the aperture the bladder will be subjected to a certain external pressure which squeezes the odor agent through the nozzle. The U.S. Pat. Nos. 4,267,658 and 4,888,907 show hollow fishing implements which are equipped with hooks and which contain agents that are attractive to fish, whereby the agents are dispensed through apertures in the implements. U.S. Pat. No. 4,267,658 shows the use of the force in a line in order to cause a certain internal pressure head in a bellows containing the agents.
SUMMARY OF THE INVENTION
The present invention is based upon the recognition that the efficiency of fishing implements based on bait and implements traditionally not based on bait can be significantly increased if the dispensing of odor agents can be controlled in a favourable manner, both with respect to the point of time when the dispensing of odor starts and the duration of the dispensing, and that it may be favourable to vary the dispensing by adapting it to activity peaks which the fish may have during 24 hours. A use of the device with respect to fishing not based on bait may be in net fishing.
The device according to the invention is characterized by the features appearing from the accompanying claims.
During use under water the device according to the invention will dose a controlled quantity of liquid concentrate of odor agent, for instance finely divided octopus or mackerel, in doses or with a controlled, possibly a constant dispensing of the odor agent.
The device according to the invention can be fastened to the catching trickle or lowered separately, and it may be equipped with electronic timing and/or quantity control means and a mechanical automatically working dosing mechanism which dispenses odor agents luring the fish to the catching trickle. By not actuating the device until a large pressure head is present due to the depth, dispensing of odor agents on depths that are riot of interest for catching fish is prevented The use of the odor agents, thus, can be performed selectively and rationally.
BRIEF DESCRIPTION OF THE DRAWINGS
An example of a device in accordance with the invention will in the following be explained more detailed, with reference to the accompanying drawings.
FIG. 1 shows a longitudinal section through the device, in a condition before it is influenced by an external pressure which actuates the device.
FIG. 2 is a cross sect
REFERENCES:
patent: 2791058 (1957-05-01), Bettini
patent: 2922246 (1960-01-01), Mileschuk
patent: 4138794 (1979-02-01), Chiodini
patent: 4267658 (1981-05-01), Brown et al.
patent: 4799328 (1989-01-01), Goldman
patent: 4888907 (1989-12-01), Gibbs
A/S Plast & Verktoy
Lavinder Jack W.
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