Firearms – Breech loading – Sliding breechblock
Patent
1996-08-09
1997-10-14
Johnson, Stephen M.
Firearms
Breech loading
Sliding breechblock
89 3303, 89155, 89 47, F41A 1516, F41A 941
Patent
active
056759240
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention concerns an ejection device for a firearm having an automatic or manual cycle, the firearm including a frame, a barrel with a firing chamber mounted on the frame, and movable elements which can be moved backward in relation to the frame during the recoil, and wherein the movable elements include an extractor to carry along an ammunition cartridge or spent casing during the recoil and an element to close the chamber, with the ejection device including an ejector mounted in the closing element.
2. Discussion of Relate Art
Generally, in order to ensure the automatic or manual "extraction/ejection of the casing/feeding of the next ammunition" cycle of firearms and in particular of infantry arms, the above-mentioned movable elements such as the bolt, slide and breech bolt move, ensuring among others that the chamber of the firearm is closed.
During the recoil of the movable elements, a non-spent cartridge or spent casing is extracted from the chamber by means of the extractor which catches the casing by its neck.
After a sufficient course, a tilting torque of the casing is created by the ejector, which is fixed in the frame or mounted on a spring in the bolt which is generally positioned diametrically opposed to the extractor, which ensures an ejection trajectory of the casing situated approximately in a perpendicular plane to the axis of the firearm.
In order to avoid hurting a right-handed shooter, this trajectory, whose angle is determined by the relative positions of the ejector/extractor, is generally situated in a more or less perpendicular direction to the axis of the firearm and to the right of the firearm.
By means of special modifications, which are indispensable in so-called "bull pup" guns, the course of the movable elements of which is situated in the grip such that the trajectory would interfere with the head of the shooter, the ejection trajectory can be situated between the vertical line and the left so as to make the firearm more suitable for left-handed shooters.
This system is disadvantageous in that a far-reaching dismounting of the firearm is required, which is not very accessible to the user, so that the firearms are dedicated to left-handed and right-handed shooters, with the risk of harm in case of a mistake.
The invention aims to remedy this disadvantage and to provide an ejection trajectory which is suitable for both left-handed and right-handed shooters with one and the same firearm without any modifications being required, and thus aims to provide a truly ambidextrous firearm.
With this objection, the ejection device includes an ejection lever mounted in a pivoting manner around a transverse axis and a guiding element provided with a passage for a casing, whereby the ejection lever tilts between a lower position in which the entrance to this passage is situated along the trajectory of the casing as the movable elements return forward and a higher position above the lower position, and a button that ejects the casing out of the passage as the ejection lever moves towards its higher position.
Preferably, the button is made in one piece with one of the movable elements.
The ejection device may contain a spring pushing the ejection lever towards its lower position.
The tilting of the ejection lever towards its higher position is caused by the movable elements as they return forward, either with the help of the casing or by making direct contact.
BRIEF SUMMARY OF THE DRAWINGS
In order to better explain the characteristics of the invention, the following embodiment of the invention is given as an example only without being limitative in any way, with reference to the accompanying drawings, in which:
FIG. 1 shows a schematic side view of a part of a firearm equipped with an ejection device according to the invention;
FIGS. 1 to 8 show a section of the part of the firearm represented in FIG. 1, but in different positions during the ejection of a cartridge;
FIG. 9 represents a section according to line IX--IX of FIG. 7;
F
REFERENCES:
patent: 1202017 (1916-10-01), Barnes
patent: 2353601 (1944-07-01), Tisdale, Sr.
patent: 2918847 (1959-12-01), Barr
patent: 3584532 (1971-06-01), Stonev et al.
patent: 3960053 (1976-06-01), Couley
FN Herstal S.A.
Johnson Stephen M.
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