Parallelogram Wire Gripping Apparatus for High Tension Fencing Repairs
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Solution Overview
Problem
High tensile fencing wire, while strong, is difficult to bend and requires effective tools for repairing broken sections of fences, as existing tools often fail to maintain optimal tension, leading to less effective repairs.
Innovation Solution
A parallelogram wire gripping apparatus with pivoted arms, a spring mechanism, and socket head cap screws to securely clamp and strain high tensile wire, ensuring maximum tension and ease of use with gloved hands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If high tensile fencing wire is used, then wire strength and strain resistance are improved, but wire malleability and ease of bending deteriorate
Solution Approach 1:
The device divides the bending operation into two distinct phases: a power stroke for cutting through the high tensile wire, and a return stroke for positioning. This segmentation allows the tool to overcome the wire's resistance to bending by applying force in controlled intervals rather than continuous manipulation.
Solution Approach 2:
The device employs dynamic elements including a movable jaw that can be rapidly positioned, a spring-loaded mechanism that stores and releases energy during the bending cycle, and a pivot point that enables smooth transitions between cutting and positioning phases. This dynamic design compensates for the wire's stiffness by adapting the tool's motion to the wire's resistance.
2Productivity
If existing wire straining tools are used, then wire cutting and initial straining can be performed, but maintaining optimal wire tension during repairs deteriorates
Solution Approach 1:
The device merges three previously separate functions into one integrated tool: wire cutting, wire clamping, and wire straining. The cutting jaw, clamping jaw, and straining mechanism work together in a coordinated sequence, allowing the user to perform complete wire repair operations while maintaining optimal tension throughout the process.
Solution Approach 2:
The device maintains continuous useful action by keeping the wire under tension throughout the entire repair process. The clamping jaw holds the wire securely while the straining mechanism applies force, and the pivot point allows smooth transitions between operations without releasing the wire, ensuring optimal tension is maintained at all times.
3Device complexity
If manual wire bending is attempted without specialized tools, then tool complexity is reduced, but repair effectiveness and wire tension quality deteriorate
Solution Approach 1:
The device is designed as a universal tool that can handle multiple wire repair operations: cutting, clamping, straining, and positioning. This multi-functionality consolidates what would otherwise require multiple separate tools into one device, maintaining simplicity while achieving professional-grade repair effectiveness.
Solution Approach 2:
The device performs much of the difficult work automatically through its mechanical advantages. The pivot point creates mechanical leverage that amplifies user force, the spring mechanism automatically returns the cutting jaw to position, and the clamping jaw self-adjusts to maintain wire tension, reducing the skill and effort required for effective repairs.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus effectively maintains wire tension during repairs, preventing unintentional jaw opening and maximizing strain on the fencing wire, resulting in a more effective and durable fence repair.
Implementation Method 1
a spring interconnecting said proximal arms at a location intermediate said distal ends of said proximal arms and said midpoints, and urging said wire clamp closed
Implementation Method 2
A parallelogram wire gripping apparatus with pivoted arms, a spring mechanism, and socket head cap screws to securely clamp and strain high tensile wire
Implementation Method 3
The apparatus effectively maintains wire tension during repairs, preventing unintentional jaw opening and maximizing strain on the fencing wire
Data Source
Figure 1
Figure 2A~2F
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AI summary
A parallelogram wire gripping apparatus (150, 250) is disclosed. There is a pair of distal arms (151, 152, 251, 252) and a pair of proximal arms (153, 154, 253, 254). The distal ends of the distal arms are pivoted to each other and are shaped to form a wire clamp (165). Each proximal end of the distal arms is pivoted to a corresponding distal end of the proximal arms. Each proximal arm is pivoted together at a midpoint thereof. A spring (130, 230) urges the wire clamp closed. A wire gripping jaws arrangement (165) incorporating fasteners (171, 172, 173) is also disclosed. A wire strainer incorporating two grippers (141, 142), a chain (144) and a winch (143) is also disclosed.