Firearms – Safety mechanism – Firearm lock
Patent
1993-06-08
1994-10-25
Bentley, Stephen C.
Firearms
Safety mechanism
Firearm lock
42 66, F41A 1702, F41A 1744
Patent
active
053577043
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND TO THE INVENTION
This invention relates to a device which may be used to lock in an inoperative state a rifle, pistol or similar firearm.
There is an ever growing pressure to limit the misuse of firearms in the general public. The lack of a secure, yet reasonably priced, gun lock, has to a large extent hampered serious efforts in addressing the problem.
In essence the present invention provides a gun lock which engages the end face of a gun bolt, or corresponding component in the normal manner by which the bolt engages the rear of a cartridge for the purposes of ejection of the cartridge.
SUMMARY OF THE INVENTION
Accordingly, in one broad form, the present invention may be said to consist in barrel; and shaped so as to reside in a firing chamber of the gun in the manner of a cartridge; portion of the rod means at a distance from the first end member approximately equal to the length of the bore such that with the rod means disposed within the bore, the first end member residing within the firing chamber and fixed to the rod means and the second end member secured to the rod means, the first end member cannot be withdrawn from the firing chamber.
It is preferred that the rod means is a hardened metal rod and that the first end member is threadedly attached to said rod and is shaped to the same shape and dimensions as a standard cartridge to be used in the gun intended to be locked by the gun lock.
It is also preferred that the second end member is securable to the second end of the rod means by actuation of a key, or similar device, and that when the key is released the rod can be rotatably detached from the first end member by rotation of a tumbler means of the second end member.
Preferably the second end member includes a sleeve means with a notch means so as to non-rotatably engage an end length of the gun, the lockable tumbler means engaging within the sleeve means.
In an alternative, especially adapted for guns having a plain barrel end, the second end member includes a plain sleeve means so as to engage an end length of the barrel and an internal contracting means, such as wedge driven detent balls, for lockably holding the second end of the rod, the second end of the rod preferably having a groove proximate its end for accepting the contracting means such as the detent balls. In such embodiment the first end member may be permanently fixed to the rod means, or it may be threadedly engaged such as is described above.
By way of example only, the following description will allow the reader to better understand the invention, and how it may be put into use, by reference to the accompanying drawings in which:
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a partially sectioned, disassembled view of a gun lock and a portion of a corresponding gun; and
FIG. 2 is a view similar to that of FIG. 1, but for an alternative embodiment.
DESCRIPTION OF BEST MODE OF CARRYING OUT THE INVENTION
A gun barrel 10 is shown in FIG. 1 in side sectioned view and includes a cartridge chamber 11 which receives a cartridge during a firing operation, a bore 13 along which the projectile passes, and the barrel end 12 where the projectile leaves the gun.
The gun also includes a bolt, or similar cartridge loading/ejection device, 16. The bolt 16 is slidingly held in the gun so that its front face 17 can be extended into, and reversed out of, the cartridge chamber 11. The front face 17 is forced firmly up behind a cartridge to be fired and locked in place before firing, and the ejection claw 18 grips the rim, or corresponding structure, of the fired cartridge so as to drag the cartridge rearwardly for ejection after firing. The ejection claw 18 is normally pivoted to the front face 17 but in the firing position it is locked firmly in place so as to ensure a firm reliable grip on the cartridge rim for the purpose of ejecting the cartridge after firing.
This general structure of the barrel 10 and bolt 16 are well known and will vary in detailed design from one gun to another. The structures are common in a large variety of
REFERENCES:
patent: 2327334 (1943-08-01), Parker
patent: 2479107 (1949-08-01), Garretson
patent: 2763081 (1956-09-01), Huckabee
patent: 2887807 (1959-05-01), Santangelo
patent: 4023294 (1977-05-01), Knopp
patent: 4398366 (1983-08-01), Wernicki
Bentley Stephen C.
PIP Industrial Services Pty, Ltd.
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