Front Linear Arming Device with Nested Linkage and Wooden Fore-end
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Solution Overview
Problem
Semi-automatic rifles with front linear armament lack aesthetic appeal and are vulnerable to damage due to exposed connecting rods, and they do not have a wooden fore-end for protection.
Innovation Solution
A front linear arming device with a T-shaped connecting piece and linkage system integrated into a wooden fore-end, allowing linear movement and protection of the mechanism, where the connecting piece moves on a guide rod under the barrel, and the operating member is partially enclosed within the wooden fore-end to maintain aesthetics and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If front linear armament is implemented with exposed connecting rods, then manual cocking functionality is achieved, but aesthetic appeal deteriorates and vulnerability to damage increases
Solution Approach 1:
The connecting rods and linkage system are nested within the hollow fore-end structure. The fore-end acts as a protective housing that contains the mechanical components, shielding them from external damage while maintaining the linear cocking mechanism's functionality. The operating member extends through the fore-end, allowing user interaction while the critical linkage components remain protected inside.
Solution Approach 2:
The fore-end is designed as a hollow protective shell that encloses the linkage system. This shell structure provides aesthetic coverage while allowing the internal mechanism to function. The fore-end acts as a protective film or shell over the mechanical components, preventing direct exposure to harmful factors.
2Ease of operation
If connecting rods are exposed for linear cocking operation, then manual arming capability is improved, but structural protection deteriorates
Solution Approach 1:
The connecting rods are nested within the hollow fore-end, which provides structural protection. The fore-end serves as a protective housing that strengthens the overall structure while allowing the cocking mechanism to operate. The nested arrangement ensures that the rods are protected from external forces while maintaining operational capability.
3Object-affected harmful factors
If a wooden fore-end is added to protect the mechanism, then aesthetic appeal and protection are improved, but linear movement capability deteriorates
Solution Approach 1:
The fore-end is segmented into a hollow protective structure that separates the aesthetic/protection function from the operational function. The operating member is a distinct component that passes through the fore-end, allowing linear movement while the fore-end itself remains stationary and protective. This segmentation allows both functions to coexist without interference.
Solution Approach 2:
The hollow fore-end acts as an intermediary structure between the user's manual operation and the internal linkage system. It provides protection and aesthetics while allowing the necessary linear movement through its hollow structure. The fore-end mediates between the external aesthetic requirements and the internal mechanical requirements.
4Object-affected harmful factors
If the fore-end is made hollow to accommodate the mechanism, then protection and aesthetics are improved, but manufacturing complexity increases
Solution Approach 1:
The hollow fore-end structure serves multiple functions simultaneously: it provides aesthetic coverage, protects the linkage system from damage, and accommodates the linear movement of the operating member. By making the fore-end hollow, a single component achieves protection, aesthetics, and operational accommodation without requiring additional separate structures.
Data Source
Figure 1~4
AI summary
The device comprises a system of linkages (8) and (9) which are connected to the moving gear of a receiver and able to be moved linearly in a back and forth motion parallel to a barrel (4). According to the invention, the device comprises a connecting piece (6) fastened to the system of linkages (8) and (9) and mounted with the ability to move linearly, guided on a rod (7) mounted parallel to and underneath the barrel (4), said piece (6) being secured, through an aperture (5a) formed under a fixed forestock (5) to an operating member (10) that partially hugs the cross section of said forestock (5) and is mounted with the ability to move in order at the same time to move the system of linkages (8) and (9) and, therefore, the moving gear of the receiver, said forestock (5) remaining conventional and stationary and performing the function of protecting the system of linkages.