Firearm Shell Loading Carrier Latch Disconnect Mechanism
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Solution Overview
Problem
Conventional shotgun shell loading systems face challenges in efficiently cycling the action without increased friction or requiring additional user-operated buttons, leading to undesirable operational complexities.
Innovation Solution
A shell loading system that includes a carrier latch disconnect operated by the carrier pawl, allowing for timed release of the carrier latch and blocking its engagement when necessary, along with a carrier anti-bounce detent mechanism to prevent jams during rapid firing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the carrier latch contacts the slide to time shell release, then the shell release timing is achieved, but the friction and force needed to cycle the action increases
Solution Approach 1:
The patent introduces a carrier latch disconnect as an intermediary component between the carrier latch and the carrier. This disconnect mechanism allows the carrier latch to be released at the correct time without requiring direct contact between the carrier latch and the slide, thereby reducing friction and the force needed to cycle the action while maintaining reliable shell release timing.
2Reliability
If the hammer interacts with the carrier latch to release shells, then shell release timing is achieved, but an additional user operated button is required
Solution Approach 1:
The patent designs the carrier latch disconnect to be automatically operated by the pawl during the normal cycling of the firearm. The disconnect is released when the pawl rotates in a specific direction during the firing sequence, eliminating the need for any additional user-operated buttons or controls. The system serves itself through the existing mechanical motion already present in the firearm's operation.
3Reliability
If the carrier latch is blocked from engaging the carrier, then shell upload is prevented, but the mechanism complexity increases
Solution Approach 1:
The carrier latch disconnect is designed as a dynamically movable component that can pivot between different positions. It is spring-biased to automatically engage the carrier latch during normal operation, blocking shell upload when appropriate. The disconnect moves dynamically in response to the firing sequence and carrier position, providing reliable shell upload control without requiring a complex fixed blocking mechanism.
Data Source
AI summary
A shell loading system for a firearm in one embodiment includes a barrel, receiver, reciprocating slide and bolt assembly, tubular magazine, tilting carrier operable to receive and feed shells from the magazine into the action, a spring-biased carrier latch laterally moveable to engage the carrier, and a pawl pivotably mounted on the carrier. A carrier latch disconnect is movable between an unblocking and blocking position that prevents engagement of the carrier latch with carrier. To prevent bouncing of the carrier after firing a shot, a first detent feature on carrier assembly automatically engages a second detent feature in the receiver as the carrier returns downward from an upward position when the action is cycled by discharging the firearm. The detent features automatically disengage when the slide moves rearward to permit normal operation of the carrier when cycling the action.