Trigger-Actuated Barrel Latch Safety Pin
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Solution Overview
Problem
Existing breech-loading firearms with rotating barrels require complex mechanisms to prevent accidental barrel rotation during discharge, often involving additional structural elements beyond the trigger, which complicates the design and operation.
Innovation Solution
A trigger-actuated safety pin locks the barrel latch during discharge, combined with an elongated trigger assembly incorporating roller bearings for smooth operation and balance, and an optional extractor assembly for rimless shells, simplifying the barrel locking mechanism and reducing wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional structural elements (bar with catches, rotatable trigger guard) are used to prevent accidental barrel rotation, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent combines the barrel locking function with the trigger mechanism itself. The trigger assembly includes a locking element that directly engages with the barrel latch, merging two previously separate functions (trigger operation and barrel locking) into a single integrated mechanism. This eliminates the need for additional structural elements like separate bars with catches or rotatable trigger guards while maintaining reliable prevention of accidental barrel rotation.
2Reliability
If additional structural elements (bolt, latching recess, trigger guard horn) are used to lock the barrel, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent extracts the essential locking function from complex multi-element mechanisms and implements it through a simplified trigger-integrated locking element. Instead of using a bolt with latching recesses and trigger guard horns, the invention uses a dedicated locking element within the trigger assembly that directly engages the barrel latch, removing unnecessary structural complexity while maintaining the core locking function.
3Ease of operation
If roller bearings are incorporated into the trigger assembly, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent changes the friction parameter of the trigger assembly by incorporating roller bearings at the pivot point. This mechanical parameter change transforms the friction-based interaction into a rolling contact system, dramatically improving trigger pull smoothness and reducing wear. The addition of roller bearings is a targeted modification that addresses operational parameters without fundamentally redesigning the entire trigger mechanism.
Data Source
AI summary
A safety pin locks a barrel latch while the firearm discharges a round of ammunition. The barrel latch safety locking mechanism is incorporated into the frame and is actuated by the trigger assembly. The barrel latch safety locking mechanism engages the barrel latch to prevent movement during firing keeping the barrel latch engaged with the barrel. The firearm is further comprised of a slide switch that is connected to the barrel latch that allows a user to disengage the barrel latch for loading.