Muzzleloader Pre-Packaged Propellant Vessel and Breech Plug
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Solution Overview
Problem
Muzzleloaders face challenges with safety and performance due to the complex loading process, friction issues, propellant fouling, variability in propellant and bullet combinations, and difficulties in unloading, which can lead to inaccurate firing and safety risks.
Innovation Solution
A muzzle-loader system with a pre-packaged breech loaded propellant charge and primer, featuring a breech portion, projectile bore, and a separator, where the propellant containment vessel is designed to minimize ullage and prevent breech loading of bullets, allowing for efficient loading and unloading, and incorporating a constriction portion to focus propellant gases for improved bullet acceleration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bullet is tightly fitted to the barrel for efficient firing, then the propellant gases can effectively propel the bullet, but the friction during loading increases substantially making it difficult to determine proper seating depth
Solution Approach 1:
The patent introduces a separable breech plug as an intermediary component that simplifies the loading process. The breech plug can be removed to access the propellant charge directly, eliminating the need to force the bullet through the entire barrel length during loading. This mediator component allows the bullet to be seated more easily while maintaining the tight fit needed for effective propellant gas propulsion during firing.
2Duration of action of moving object
If slower burning propellant is used in muzzleloaders, then the propellant has sufficient time to burn and propel the bullet, but the propellant fouls the barrel severely requiring frequent cleaning
Solution Approach 1:
The patent divides the propellant loading system into separate components: a removable breech plug that contains the propellant charge and a separate bullet loading mechanism. This segmentation allows the propellant to be contained in a controlled environment (the breech plug chamber) rather than directly in the barrel, reducing fouling of the barrel itself while still allowing sufficient burn time for effective propulsion.
3Ease of operation
If the bullet travels through the barrel twice (once during loading, once during firing), then the loading process can be completed, but the friction and uncertainty about proper seating depth create safety risks
Solution Approach 1:
The patent implements preliminary action by providing visual markers or indicators on the breech plug or barrel that show the correct seating depth of the bullet before firing. This allows the operator to verify proper bullet placement in advance, eliminating the uncertainty about whether the bullet has been pushed far enough down the barrel. The preliminary indication system ensures safety by confirming correct loading before the firing sequence begins.
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
Enhances safety and performance by allowing safe separation of propellant and bullet, reducing fouling, and improving ballistic accuracy through efficient loading and unloading processes, while minimizing environmental impacts on propellant ignition.
Implementation Method 1
the expanding propellant gases can overcome the frictional forces to propel the bullet through the barrel
Implementation Method 2
The tight fit of the bullet to the barrel can create substantial friction as the bullet travels through the barrel
Implementation Method 3
The primer is then struck by an inline firing pin or an external hammer to ignite the propellant charge to create propellant gases for propelling the bullet
Data Source
AI summary
Muzzleloader systems include a pre-packaged propellant charge and primer for providing efficient loading and unloading of the muzzleloader. The muzzleloader accepts in the breech end the propellant containment vessel that abuts against a constriction portion with a reduced diameter portion. The propellant containment vessel having an end portion with a tapered surface that conforms to the constriction portion surface. A projectile is inserted in the muzzle end and seats against the constriction portion. The propellant containment vessel may be received in a removable breech plug. The constriction portion may be part of the breech plug or a separate component secured in the barrel by way of the breech plug. The containment vessel further comprises a primer mechanism that may be integrated into the proximal end of the containment vessel.