Pivoting Cocking Spur for Firearm Hammer Snag Reduction
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Solution Overview
Problem
Existing firearm hammers with prominent cocking spurs often snag on clothing or materials during draw, increasing time and effort required for use and compromising safety and performance.
Innovation Solution
A firearm hammer with a hinged cocking spur constantly biased to the closed position, utilizing a tensioned coil spring or magnetic materials to automatically return to the closed position after clearing snags, allowing for instinctive use while minimizing snagging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cocking spur is made prominent for easy indexing and cocking, then the ease of operation is improved, but the probability of snagging on clothing or materials increases
Solution Approach 1:
The cocking spur is made movable rather than fixed, allowing it to dynamically adjust its position. It can pivot between a closed position (reducing snagging) and an open position (providing prominent cocking surface). The spring mechanism enables automatic transition between states based on operational needs.
Solution Approach 2:
The spatial parameter of the cocking spur is changed from static to dynamic. By varying its angular position between closed and open states, the system optimizes both snag resistance and cocking accessibility at different times during operation.
2Object-affected harmful factors
If the cocking spur is made recessed to reduce snagging, then the harmful factor of snagging is reduced, but the ease of indexing and cocking deteriorates
Solution Approach 1:
The system transitions from a permanently recessed spur to a dynamically adjustable spur that can pivot to an open position for easy cocking while maintaining the ability to return to a closed position for snag resistance.
Solution Approach 2:
The spring mechanism pre-positions the cocking spur in the closed state, and the user's natural cocking motion automatically opens it to the functional position, eliminating the need for manual manipulation to prepare the spur for use.
3Object-affected harmful factors
If the cocking spur is made movable to reduce snagging, then the snagging probability is reduced, but the device complexity increases
Solution Approach 1:
The hammer is divided into two functional segments: the main hammer body and the separately pivoting cocking spur. This segmentation allows the spur to move independently to reduce snagging while keeping the rest of the hammer structure simple and familiar.
Solution Approach 2:
A spring mechanism serves as an intermediary element that provides the automatic return function. This simple mechanical intermediary enables the complex behavior of automatic positioning without requiring sophisticated control systems.
4Productivity
If a spring mechanism is added to automatically return the cocking spur, then the productivity is improved, but the device complexity increases
Solution Approach 1:
The spring mechanism enables the cocking spur to service itself by automatically returning to the closed position after being displaced. This self-service capability eliminates the need for manual intervention to reset the spur, thereby improving draw speed and productivity.
Solution Approach 2:
The spring acts as a simple mechanical intermediary that provides automatic return functionality. This single passive component achieves the complex function of rapid automatic positioning without requiring active control systems or multiple moving parts.
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
Reduces the probability of snagging during firearm draw, enhancing user safety and performance efficiency by ensuring rapid and automatic return of the cocking spur to the closed position.
Implementation Method 1
In one preferred embodiment, the constant bias to the closed position is created by a properly tensioned coil spring situated at the hinge.
Implementation Method 2
In other embodiments, a magnetic material situated at the interface between the cocking spur and the main body of the hammer performs the same function.
Data Source
AI summary
A firearm hammer that has its cocking spur attached in a hinged manner that is constantly biased to the closed position. Upon sufficiently applied force, the cocking spur can pivot about the hinge from the closed position to a plurality of open positions, and then due to the constant bias, the cocking spur automatically and rapidly returns to the closed position. In one embodiment, a spring at the hinge causes the constant bias of the cocking spur to the closed position. In the closed position, the cocking spur rests upon the main body of the hammer and is thereby supported to allow the hammer to be cocked. This invention reduces the probability of snagging the hammer on clothing as the firearm is drawn for use. This invention also allows instinctive use of the cocking spur since it is automatically and rapidly returned to the closed position after deviations thereof.