Machine Gun Lateral Feed and Ejection Mechanism
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Solution Overview
Problem
Conventional machine guns face issues with inaccurate aiming due to the placement of aiming systems on top of the feed cover, which can cause misalignment and overheating of optics, limited compatibility of optical devices, and difficulties in belt handling and ejection, leading to malfunctions and reduced mobility due to the weight of steel frames.
Innovation Solution
A machine gun design with a lateral feed channel and cover that adjusts the belt position during closure, incorporates a non-return ratchet for precise belt alignment, and a mechanism for ejecting the last two links, along with retractable holding surfaces for easy belt placement and retention, allowing for improved accessibility and reduced weight through a tubular frame geometry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If aiming systems are mounted on the feed cover, then accessibility for reloading is improved, but aiming accuracy deteriorates due to misalignment
Solution Approach 1:
The patent extracts the aiming system from the feed cover and relocates it to a fixed mounting position on the weapon body. This separation allows the feed cover to be optimized for reloading accessibility while the aiming system maintains a stable, fixed position for accurate alignment, resolving the contradiction between ease of operation and measurement precision.
2Object-affected harmful factors
If the feed cover is made long to protect optics, then protection is improved, but heat transmission to optics worsens
Solution Approach 1:
The patent extracts the optics from the feed cover assembly and relocates them to a fixed mounting position on the weapon body, separating them from the heat-generating barrel area. This allows the feed cover to be designed for optimal protection and accessibility without compromising optic temperature, as the optics are no longer in direct proximity to the barrel heat.
3Strength
If steel frame is used for strength, then structural strength is improved, but weight increases reducing mobility
Solution Approach 1:
The patent employs composite construction techniques, combining steel components where high strength is critical with lighter materials in non-critical structural areas. This composite approach maintains the necessary structural strength for weapon functionality while reducing overall weight to improve mobility, resolving the contradiction between strength and weight.
4Measurement precision
If optical members are mounted on the cover, then alignment is improved, but compatibility with long scopes deteriorates
Solution Approach 1:
The patent creates a universal, fixed mounting position for optical systems that is independent of the feed cover configuration. This standardized interface allows various optical members including long scopes to be mounted with consistent alignment, providing versatility and compatibility across different optical configurations while maintaining precise alignment through the fixed mounting location.
Data Source
AI summary
A machine gun comprising an ammunition belt feed mechanism comprising a mechanism for ejecting a last two links of an ammunition belt, and an ejecting ratchet configured to push on a penultimate link and actuated by mobile parts of the machine gun wherein the ejecting ratchet is secured to a belt traction mechanism, wherein the belt traction mechanism comprises an advancing ratchet configured to push, in use, against an ammunition item, wherein the ejecting ratchet and the advancing ratchet are formed as a single part.