Rimless Cartridge Speed Loading via Fixed Ejector Protrusions
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Solution Overview
Problem
Existing solutions for loading and ejecting rimless cartridges in revolver handguns are either prone to deformation, complex, and require skilled maintenance, or lack efficient speed loading capabilities, making them unreliable and time-consuming.
Innovation Solution
A novel speed loading device with a simplified ejector head featuring fixed, non-moving protrusions and spring-loaded surfaces that externally manage the loading and ejection of rimless cartridges, eliminating the need for complex internal mechanisms and allowing for faster, more reliable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If moon clips are used to retain rimless cartridges, then speed loading capability is improved, but the clips are prone to deformation and breakage
Solution Approach 1:
The patent employs thin metal clips (moon clips) as disposable or easily replaceable components that hold rimless cartridges. These clips are designed to be inexpensive and simple to replace, accepting that they may deform or break during use. The clips enable simultaneous loading of multiple chambers while their limited durability is compensated by their low cost and ease of replacement.
Solution Approach 2:
The metal clips serve as an intermediary component between the rimless cartridges and the revolver cylinder. The clips provide the necessary rim structure that rimless cartridges lack, allowing them to be retained and ejected properly. This intermediary element enables the use of rimless cartridges in revolvers without requiring modification to the cartridges themselves or complex internal mechanisms in the firearm.
2Adaptability or versatility
If spring loaded mechanisms with retractable projections are used, then rimless cartridge ejection is enabled, but the mechanism becomes bulky and complex
Solution Approach 1:
The metal clips act as an intermediary that eliminates the need for complex spring-loaded mechanisms within the ejector assembly. By providing external retention structure, the clips allow the use of simple, fixed ejector designs that lack moving parts, thereby reducing overall device complexity while maintaining rimless cartridge compatibility.
Solution Approach 2:
The patent extracts the complex spring-loaded retention mechanism from the firearm's internal ejector assembly and replaces it with simple external metal clips. This extraction removes the bulky and complex internal mechanisms, leaving a simplified ejector design with no moving parts, while the clips perform the retention function externally.
3Adaptability or versatility
If complex internal mechanisms are incorporated into the ejector assembly, then rimless cartridge handling is enabled, but skilled maintenance is required
Solution Approach 1:
The patent removes complex internal mechanisms from the ejector assembly by extracting them and replacing with simple fixed structures. The rimless cartridge handling function is transferred to external metal clips that can be easily removed and replaced by users without requiring skilled gunsmith maintenance.
Solution Approach 2:
The metal clips are designed to be user-serviceable components that can be easily removed, replaced, or cleaned by the firearm owner without requiring professional maintenance. This self-service capability eliminates the need for skilled gunsmith intervention while maintaining proper rimless cartridge handling.
4Reliability
If rimmed cartridges are used in revolvers, then reliable retention and ejection are achieved, but ammunition variety is limited
Solution Approach 1:
The metal clips serve as an intermediary that enables revolvers to handle rimless cartridges while maintaining reliable retention and ejection. This intermediary allows the firearm to use the more versatile rimless cartridge format (such as 9mm) without sacrificing the reliability associated with traditional rimmed revolver cartridges, thereby expanding ammunition variety.
Data Source
AI summary
Revolvers typically require the use of rimmed cartridges to enable loading and retention of ammunition and to eject spent cartridge cases.This invention uses novel modifications to the cartridge ejector head consisting of a fixed cartridge groove engagement node, which when used in conjunction with a novel “speed loader”, specially designed for use with rimless cartridges and the novel ejector head, allows revolvers to use the rimless cartridges normally used in self loading firearms. This system for modifying revolver ejectors for use with rimless cartridges when used in conjunction with this new type of speed loader, makes it possible to quickly load, retain and eject spent cases, using rimless cartridges in revolver style firearms. The design uses a solution that eliminates the need for complex mechanisms in the ejector/cylinder assembly that are prone to the kind of breakage, fouling and wear that require the costly and time consuming services of a professional gunsmith to repair.