US3495339A - Sight for firearms - Google Patents

Description

lF'e. "F K970 G. E. ELLIASON 3,495,339

S IGHT FOR FIREARMS Filed Jan. 19, 1968 George [ff/0'4 son IN V E N 70E States Patent Officc 3,495,339 Patented Feb. 17, 1970 3,495,339 SIGHT FOR FIREARMS George E. Elliason, 2109 Carroll Place, Tampa, Fla. 33612 Filed Jan. 19, 1968, Ser. No. 699,991 lint. C]. F41g 1/16 US. C]. 3356 2 Claims ABSTRACT OF THE DISCLOSURE A sight for firearms wherein a sight leaf is vertically and horizontally adjustable on a fixed base. To this end the leaf is pivotally and slidably mounted on a hinge pin rigidly mounted on the base. Relative pivotal and sliding motion is imparted against spring bias by elements threaded in the base and axially through the hinge pin, respectively.

It is the object of this invention to provide a sight that will withstand the shock of automatic weapons. Another object is to provide adjustments fine enough for present competitive target shooting requirements. A further object is to provide a sight for which the parts can be easily manufactured, to reduce cost. A final object is to provide a sight which is easy to assemble, thereby reducing cost, and increasing general satisfaction.

With the above objects in view, a gun sight embodying the invention comprises a sight leaf hinged to a fixed base, with spring action urging leaf upward, and with such upward movement limited by the head of an elevation adjustment screw. Lateral adjustment is provided by a windage adjustment screw, which moves the leaf in the desired direction without affecting the elevation adjustment. A slot in the underside of each of the two arms of the sight leaf closely engages a mating part on the top side of the fixed base to prevent any lateral swinging motion of said leaf if the hinge pin should wear loose. This slot also shares the shock load with the hinge pin, preventing breakage of the pin, and prolonging the precision fit of the hinge pin to the leaf.

A rear sight embodying this invention is illustrated in the accompanying drawings in which FIG. 1 is a view of the rear sight shown with a section of a gun slide on which it is mounted.

FIG. 2 is a view of the base, also shown with a section of a gun slide on which it is mounted.

FIG. 3 is a top plan view of the sight.

FIG. 4 is a side elevation view of the sight, with a portion of a gun slide on which it is mounted.

FIG. 5 is a longitudinal section taken on the line 55 in FIG. 3;

The undisclosed side view is substantially the same in appearance as the side shown.

The primary components of the sight illustrated in the drawings are the fixed base 16, with a sight leaf 12 hinged thereto, an elevation adjustment screw 27 for raising and lowering leaf 12, and a windage adjustment screw 28 for moving the leaf 12 transversely with respect to base 16. Base 1 6 may have its lower portion of a dovetail shape to fit conventional dovetail slots on guns, or said lower portion may be made any convenient shape to mount on top of a gun. Two set screws 25 and 26 are provided to lock base 16 into desired place. The base .16 has a transverse hole 21 into which hinge pin 32 is press fitted on assembly of the sight. Surfaces 17 and 18 of base 16 are made to accurately fit surfaces Hand 20 on leaf 12, even when the leaf 12 is raised to its upper working limit. Elevation adjustment screw 2.7,v screws into threaded hole 22 in base 16, and spring wire lock pin 24 locks said screw 27 into desired adjustment, by engaging the serrations, knurls or recesses on the screw head. The windage adjustment screw 28 is screwed into threads in hinge pin 32, and nut 30 is staked to the screw 28 when in position, so both turn together. Spring 31 is made to recess into one end of hinge pin 32, with the other end of said spring 3 1 pressing against a portion of the leaf 12, to take up play, both in the threads and in the fit of the windage adjustment screw 28 and nut 30 to the leaf 12.

The windage adjustment screw 28 is prevented from turning due to shock by a spring urged detent 2 9. Spring 33 urges the said detent 29 into serrations, knurls or recesses in the head of screw 28.

Elevation spring 35 is used to urge leaf 12 upward against the head of elevation adjustment screw 27. Said elevation spring 35 is retained in a suitable hole by spring retainer pin 34, which is a press fit to the inside of elevation spring 35. The same retaining effect can be accomplished by having a portion of the said hole he a press fit to the outside of elevation spring 35. This tighter portion of said hole would necessarily be at the deepest part of the hole. The spring retainer pin 34 has a portion of it threaded, and screws into a threaded hole in leaf 12. This said threaded hole for the spring retainer pin 34 is located in the center of the location of the hole for the elevation spring 35.

The leaf 12 has a flanged portion 13, which is disposed approximately perpendicular to the line of sight, and in some applications the lower edge of said flange 13 hangs down slightly over the rear of the gun. The upper edge of flange 13 is disposed somewhat above the top of leaf 12, and has a sighting notch formed centrally between its lateral extremities.

One feature on this sight is a new concept, namely, the use of a windage adjustment screw which is coaxial with, and threaded into the hinge pin, which hinge pin is press fitted or otherwise firmly fitted into the base, and upon which hinge pin the movable leaf is pivotally and slidably mounted.

What is claimed is:

1. In a sight for firearms, the combination comprising a fixed base, a sight leaf pivotally mounted to said base for elevational movement with respect thereto, a pivot pin rigidly mounted in the aforementioned fixed base upon which said leaf is pivotally and slidably mounted, windage adjustment screw for moving said leaf transversely to said fixed base mounted coaxially to and threaded in said pivot pin, spring means urging said sight leaf transversely of said base, an elevation adjustment screw threaded in said base with an enlarged head portion limiting the upward movement of said sight leaf with respect to said base, spring means urging said sight leaf upward against the head of said elevation adjustment screw, spring urged detent engaging serrations, knurls or recesses on head of said windage adjustment screw, spring wire detent engaging serrations, knurls or recesses on head of said elevation adjustment screw, a transverse slot on the underside of said sight leaf with portions of the upper surfaces of said fixed base closely fitting surfaces of aforementioned transverse slot.

2. In a sight for firearms, the combination comprising a fixed base, a sight leaf pivotally mounted to said base for elevational movement with respect thereto, a pivot pin rigidly mounted in the aforementioned fixed base upon which said leaf is pivotally and slidably mounted, Windage adjustment screw for moving said sight leaf transversely to said fixed base mounted coaxially to and threaded in said pivot pin, spring means urging said sight leaf transversely of said fixed base, an elevation adjustment screw threaded in said base with an enlarged head ,ggggaw,

portion limiting the upward movement of's aid sight leaf I withsrespect tov said fixed base springr means urging-said I I References Cited fiNifED STATES PATENTS 2,774,143 12/1956 SunderIand 33-56 2,963,789 12/1960 Wilhelm 3356 QR IG PATENTS 669,844 1/1939 Germany; v

94,036 4 9 2 Switiaerland; K

SAMUEL s. MATTHEWS, Primary Examiner.

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