US1476884A - Gun sight - Google Patents

Description

ATTORNEYS GUN SIGHT Dec l1, 1923.

original Filed April 15. '1922 Patented Dec. 11, 1923.

UNITED STATES ELI EDW. GREGORY, OF LEWISPORT, KENTUCKY.

GUN SIGHT.

Application led April 15, 1922, Serial No. 553,031. Renewed September 27, 1923.

To ail whom t may concern:

Be it known that I, ELI E. GREGORY, a citizen of the United States, and a resident of Lewisport in the county of Hancock and State of kentucky, have invented certain new and useful Improvements in Gun Sights,

of which the following is a specification.

My invention relates to improvements in gun sights, and it consists in the constructions, combinations and mode of operation herein described and claimed.

An object of the invention is to provide a gun sight by means of which the proper elevation of the gun muzzle can be found by the user with both eyes open, the sight being of such a construction that it produces the optical effect of crossed hairs.

A further object of the invention is to provide a gun sight of the nature described,

which when used obscures none of the field of vision under the target, the only opaque spot being at the crossing point of the arms or hairs, which crossing point is to be taken as the shooters bead.

Other objects and advantages will appear in the following specification,reference-being had to the accompanying drawing, in which z- Fig. 1 is a perspective View of one form of the improved sight,

Fig. 2 is a detail View showing how the sight should be adjusted to fit the interpupillary distance of the user,

Fig. 3 is a diagram illustrating the optical elfect of the sight in Fig. 1,

Fig. 4 is a detail view of a second form of the gun sight,

Fig. 5 is a diagram illustrating the optical effect of the sight in Fig. 4.

Fig. 6 is a detail view of a third form of gun sight,

Fig. 7 is a diagram illustrating the optical effect of the sight in Fig. 6,

Fig. 8 is a detail view of a fourth form of the gun sight,

Fig. 9 is a diagram illustrating the optical effect of the sight in Fig. 8,

Fig. 10 is a detail view of a fifth form of the gun sight,

Fig. 11 is a diagram illustrating the optical effect of the sight in Fig. 10, and

Fig. 12 is a detail View of a sixth form of the gun sight.

This invention is an improvement on the gun sight disclosed in my Patent 1,350,153,

granted August 17, 1920, the principal advantage of the improved gun sight being that it leaves the field of vision under the target perfectly clear, the only opaque spot occurring at the place where certain arms apparently cross (for example, Figs. 3 and 9). The patent discloses a triangular plate which, when sighted by both open eyes, presented the optical effect of two partly superposed triangular images, and a resultant triangular image which appears solid or black.

This solid resultant triangular image blocks out the field of vision under the target, and while this is not a serious disadvantage, still it is an imperfection which the improved sight wholly overcomes. The solid triangular plate arrangement of the patent is well adapted for use in great elevations and the property of the wide base and upwardly tapering body is utilized in some of the forms of the improved gun sight, for example, in Figs. 4 and 6.

The first form in Fig. 1 illustrates a pair of arms 1 and 2 which overlap and are secured by any suitable means 3. The ends of the arms 1 and 2 are bent upwardly and inwardly at 4 and 5 respectively, so as to produce a device of substantially triangular coniguration. The upper ends of the arms 4 and 5 do not meet, but are purposely left open because it is unnecessary to extend the sides up to la point as the desired optical effect is obtained without so doing (see Fig. 3).

A strip 6 of resilient metal is fastened in place on the arms of the sight by the means 3, the free ends of the strip being attached at 7 to a screw 8 which carries a wing nut 9. The strip 6 has a plurality of oblong openings 10 which partly render the strip more flexible, one of the openings being utilized for the passage of the screw 8. It is necessary that the overlapping parts of the arms of the gun sight have a corresponding opening so that the screw 8 may pass through. Such an opening will also allow lateral adjustments of the arms, such adjustments being made by unloosening the means 3.

It is intended that the improved gun sight shall be used with both eyes open, whereupon the right eye sees the image a in Fig. 3 and the left eye the image Z. The arms 4 and 5 will appear to cross, the two arms being so distinct as to well define two crossed hairs, the central spot 11 appearing opaque and constituting the shooters bead Otherwise, the sight seems perfectly transparent to the shooter, enabling him to see through, all around and under the sight, eX- cept at the base of the sight where the lines of vision are also blocked.

It is to be observed that the means 6 in Fig. 1 is not necessarily employed in fastening the gun sight to the front end of a gun barrel. The reader doubtless understands that the loop which the strip 6 forms, is intended to be drawn down tight on the gun barrel by screwing up on the thumb screw 9. Neither the specific form of the gun sight nor the means by which it is attached is of foremost importance in this invention, it being the optical effect obtained by the use of the variously formed sights, which is regarded as the greatest importance.

The form in Fig. 4 comprises two arms 1a and 2a respectively, which are bent over at 4aM and 52L toward each other. The ends 4a and 5a are quite thin, the bases 12 and 13 of the arms being quite heavy; in other words, the arms taper from thickened bases to fine ends.

This form of the gun sight is particularly adapted for long range shooting or where a great elevation of the aXis of the gun barrel is necessary, and actual practice has demonstrated it to be necessary to widen or thicken the bases 12 and 13, otherwise no clearly defined optical cross (Fig. 5) will be produced. lVhen viewed with both eyes open, the form in Fig. 4 produces an optical e'ect as shown in Fig. 5. rPhe right eye tends to move the arm 5aN over toward the left, the left eye tending to move the arm 4a over toward the right. The bases 12 and 13 merge into a substantially triangular dark spot 14, the point c constituting the shooters bead.

lVith this particular form of the gun sight, the advantage of a clear space beneath the target is somewhat obscured, but as stated above, this particular sight is intended for long range shooting (or to eifect high trajectories) and the ability to see below the target is in this case regarded as of negative importance. The sight in Fig. 4 may be used in connection with a peep sight7 (as may any of the other sights) and when so used, produces the optical eiiect of an opaque pyramidal base 14 and crossed arms 4a and 5a which appear in the clear part of the shaded circle 15.

The form in Fig. G is partly on the order of the form in Fig. 4, in that it has an arm 1b bent over int-o a fine end 4b-` both tapering from the thickened base 16 which is carried by the lateral arm 17. This gun sight includes a central standard 18 which is thick at the bottom and thin at the top. When viewed through a peep sight 19 (Fig. 7) the crossed hair effect shown is obtained. The arm 1b appears to have moved over across the standard 18, all parts of the sight being obscured with the exception of the so-called optical cross.

The form in Fig. 8 is a modification of the form in Fig. 6, it being observed that the general configuration of the latter gun sight is here retained. This is a binocular gun sight and not what has heretofore been called a rangeefnding sight, the reason for the former naming being that the converging and diverging of the shooters pupils does not change the crossing points of the sight. The latter eil'ect is a feature of the other sights. The arm 4c is bent outward at 1c and forms part of a base 21. When viewed through a peep sight, the optical effect shown in Fig. 9 is obtained. This is atrue cross hair effect.

The form in Fig. 10 comprises a base 22 which is bent around at 1d, then up at an inclination 23, over at 4d, then down at 24, thus embracing all of the elements of the sights in Figs. 6 and 8 with the addition of an inclined side. This side will appear as an inclined line crossing the standard 24 when viewed through a peep sight as in Fig. 11. This sight is disclosed merely for the purpose of showing how the sight in Fig. 8 can be modified and so obtain substantially the same effect.

The form in Fig. 12 is shown as a left eye attachment, devised for the purpose of converting any rifle, shot gun or air gun, with a tall fore-sight into a both eyes sighting arrangement. The fore-sight 25 is supposed to be in place on the gun barrel. The arm 26 is intended to be attached in any suitable manner. The base includes the arm 4e, which may be horizontal (as shown) or at any desired angle (see 23, Fig. 10), but the end of the arm 4e must be offset adjacent to the point of the regular foresight 25, at least sufiiciently to intercept the vision of the left eye when the wea on is alined on a mark by the right eye. s before (Fig. 8, for example) the optical effect will be one line crossing another, the point of intersection of the lines being the shooters bead which is mutable and eii'ected by the widening and narrowing of the two lines of vision at the eyes in focusing on objects or targets at varying distances, or in throwing the two arms of the si ht together more closely on distant objects t an on near objects.

I claim 1. A sight for an implement -to be aimed, adapted to be mounted on the forward portion of said implement, comprising one vertical arm and a second arm having a portion bent toward the rst arm, said arms, when the object aimed at is viewed with both eyes, producing the optical effect of crossed hairs.

2. A sight for an implement to be aimed,

adapted to be mounted on the forward portion of said implement, comprising one vertical arm, a base extending to one side of the arm and implement, and a second arm carried by the base having a-portion disposed in the direction of the first arm, said arms, when the object aimed at is viewed with both eyes, producing the optical effect of crossed hairs.

3. A sight for an implement to be aimed, adapted to be mounted on the forward portion of said implement, comprising one vertical arm, a base extending to one side of the implement and arm, and a substantially vertical second arm rising from Said base and merging into a portion which is disposed at an angle to the lirst arm, said arms, when the object aimed at is viewed with both eyes, producing the optical effect of crossed hairs.

4. A sight for an implement to be aimed, comprising two arms adapted to be fitted on said imp-lement in a laterally spaced position, said arms being thick at the base for rigidity and tapering to line ends to produce the optical effect of crossed hairs when an object aimed at is viewed With both eyes past the sight.

5. A sight for an implement to be aimed, comprising two substantially parallel arms spaced apart, each being thick at the bottom and tapering to ne ends, said ends being bent toward each other, said arms, when the object aimed at is viewed with both eyes, producing the optical effect of crossed objects, the central point of which constitutes the shooters bead.

6. A sight for an implement which is to be aimed, adapted to be mounted on the forward portion of said implement and presenting transversely to the line of sight an outline having upwardly converging edges and a base wider than the interpupillary distance of the person aiming, said sight, when the object aimed at is viewed by the person with both eyes, producing the optical effect of two imagescorresponding to: the sight outline and spaced laterally of the line of sight, said images overlapping and thus forming a resultant cross-hairs effect when objects viewed are within so called pointblank range, or near when the gun requires slight elevation, but when objects farther away are aimed at the sighting bead changes from a cross and becomes an opaque image of pyramidal form, varying in size with the range of the obj ect, and havinfr its apex in the line of sight.

A sight for an implement to be aimed, adapted to be mounted on the forward portion of said implement and presenting transversely to the lines of vision two upwardly inclining or converging arms of varying thickness and a base wider than the interpupillary distance of the person aiming, said sight, when the object aimed at is viewed by the person aiming, with both eyes, presents a double and overlapping image, resultin in cross-hairs effect when the object 1s near but a pyramidal and opaque image when thel object is farther away, said images overlapping and thus forming cross-hairs and triangular images varying in height with the range of the object, and having the cross, or the apex of the resultant triangle in the line of sight, to effect the proper elevation of the forward end of the implement to be aimed.

ELI EDW. GREGORY.

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