Embedded Horn Line Retrieval for Snagged Cast Nets
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Solution Overview
Problem
Traditional methods for retrieving snagged cast nets often require users to enter the water, posing safety hazards and risking line or net damage, especially when snagged on underwater obstructions.
Innovation Solution
A cast net retrieving device with a dual line system comprising a hand line, horn line, and couplers, or a horn hook, allowing users to exert an uplifting force on the central horn to alleviate tension in braille lines and free the net without entering the water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If users pull harder on the hand line to retrieve a snagged cast net, then the net can be freed from minor snags, but it causes hand line breakage, braille line breakage, or damage to the net itself
Solution Approach 1:
The retrieval system is divided into two independent lines: a hand line for user control and a horn line connected to the central horn. This segmentation allows the hand line to be pulled for initial retrieval while the horn line independently manages tension on the central horn, preventing excessive force from damaging the braille lines or net.
Solution Approach 2:
The horn line acts as an intermediary between the user's pulling force and the central horn. It absorbs and distributes the tension forces, preventing direct transmission of excessive force to the braille lines and net structure, thereby avoiding breakage and damage.
2Ease of operation
If users wade or swim into the water to free the net from underwater obstruction, then the net can be retrieved, but it creates safety hazards from cold water, strong currents, or slippery rocks
Solution Approach 1:
The system enables the cast net to free itself from underwater obstructions through the horn line mechanism. The user simply pulls the hand line, and the horn line automatically manages the tension to release the net from snags, eliminating the need for users to enter the water and exposing them to safety hazards.
3Ease of operation
If users enter the water to free the net, then the net can be retrieved, but it is time-consuming and causes lost fishing time
Solution Approach 1:
The invention replaces the mechanical action of entering water and manually freeing the net with a line-based tension management system. The horn line automatically handles the complex task of releasing the net from obstructions through controlled tension application, significantly reducing the time required for retrieval.
4Productivity
If traditional retrieval methods are used, then the net can be pulled, but it risks tearing the net or breaking lines when snagged on firmly lodged obstructions
Solution Approach 1:
The system dynamically adjusts tension distribution through the two-line configuration. The horn line can be pulled independently to apply controlled upward force on the central horn, while the hand line manages the overall retrieval. This dynamic tension management prevents sudden, excessive forces that could tear the net or break lines.
Data Source
AI summary
A cast net retrieving device is disclosed having a hand line removably connected to a swivel of a cast net body. A tube joint is disposed within the hand line, and a horn line is disposed inside the tube joint. A distal end of the horn line is removably connected to a central horn of the cast net body, such that a pulling upon a proximal end of the horn line slides the horn line through the tube joint and through the respective hand line. Such pulling of the horn line by a user through the embedded tube joint exerts a pulling force upon the central horn to which it is connected, which alleviates tension in the braille lines of the cast net thereby allowing a user to remove the cast net from being snagged on an underwater obstruction, while avoiding breakage of the braille lines and without the user needing to enter the water.