US1618225A - Gun sight - Google Patents

Description

Btw-233 0R 196189225 SR Feb. 2z, 1927. 1,618,225

J. H. REDFIELD GUN SGHT Filed Feb. '7. 1925 'WM ,Y

INVENTOR.

ATTORNEY.

Patented Feb. 22, 1927.

UNITED STATES JOHN H. REDEIELD, 0F DENVER, COLORADO.

GUN SIGHT.

Application led February 7, 1925. Serial No. 7,601.

This invention relates to sights for guns, more particularly of the type in which the sight is surrounded b-y a cylindrical shield, carried on a dove-tailed base which is arranged to be forced into the usual dovetailed sight slot in the gun barrel. As heretofore manufactured, the shield and base were either milled from a solid piece of metal, the milling operation on the article necessarily being very intricate and costly, or the shields were secured to the base by screws. The latter method is also comparatively expensive to manufacture and the screws were liable to become loosened by the constant recoil of the gun.

The principal object ofthis invention is to provide a gun sight of this character which will avoid the above noted costly methods and which will provide a secur and permanent construction.

A further object of the invention is to provide a convertible sight, that is, one which may be used as a pin-ball sight or changed to an aperture sight as desired, which will be so constructed that the sight will be maintained in a vertical position regardless of any looseness occasioned by wear at the pivot point.

.A still further object is to construct a convertible device of this character in which a pin-ball sight may be interchanged with an aperture sight in such a manner that the tip of the ball will align with the position occupied by the lower edge of the aperture.

Other objects and advantages reside in the detail construction of the invention, which result in simplicity, economy, and efficiency, and which will become more apparent from the following description.

In the following detailed description of the invention reference is had to the accompanying drawing which forms a part hereof. Like numerals refer to like parts in all views of the drawing and throughout the description.

In the drawing:

Fig. 1 illustrates the muzzle of a gun barrel with my improvement in place thereon.

Fig. 2 is an enlarged vertical cross section taken on the line 2 2, Fig. 1, illustrating the construction of a simple pin-ball sight employing my improvement.

Fig. 3 is a longitudinal section taken on the line 3 3, Fig. 2.

Fig. 4 is a cross section through a sight in which my improved construction is embodied and which is provided with a convertible sight.

Fig. 5 is a longitudinal section taken on the line 4 4, Fig. 4.

Fig. 6 is a perspective detail view illustrating the component parts of the device as illustrated in Figures 1, 2 and 3.

Fig. 7 illustrates a perspective detail view of the parts employed in that form of a device illustrated in Figs. 4 and 5.

Fig. 8 is an exaggerated cross section through the device illustrating the clamping action of the retaining pin.

In Fig. 1 the illustration is substantially actual size. In the remaining gures, the device has been enlarged to facilitate the illustration.

Let the numeral 8 designate a gun barrel containing one of the usual dove-tail sight groove 9. The invention comprises a shield 10, which may be manufactured from tubing or can be turned in a lathe. The shield 10 rests in a base 11, the upper side of which is concave to receive the shield 10. The lower edge of the base 11 is dove-tailed so that the base may be driven in and secured to the dove-t-ail sight groove 9. A sight 12 is arranged within the shield 10.

The device is assembled by passing the sight 12, from without, through a wedgeshaped slot 13 cut in the shield 10. The base of the sight 12 is wedge-shaped, as illustrated at 14, Fig. 6, so that it will fit snugly into the slot 18, with its lower edge in alignment with the outer surface of the shield 10. The base 11 is provided with pin holes 15, which register with a pin hole 16 in the shield 10, and a pin hole 17 in the sight 12.

lVhen the sight 12 is in place in the shield and the shield is in place on the base 11, a pin 18 is passed entirely through the holes 15, 16 and 17, as illustrated in Fig. 2, thus firmly locking all of the component parts together. This method of consrtuction eliminates thel use of screws, rivets, etc., and also eliminates the necessity of forming the base 11 and the shield 10 of an integral solid block.

The hole 15 is drilled at a slightly downward angle, so that the pin 18 will be forced against the lower portion of the hole 16. This construction will act to bow the pin 18 downward at its center, as illustrated in Fig. 8, and causing it to draw the various parts into close Contact and firmly locking the pin in place. This bowing of the pin is eX- ceedingly slight but sufficient to clamp t-he parts permanently together.

In Figs. 4, 5 and 7, I have illustrated a novel convertible sight which also embodies the novel features of construction previously described. In this form, the base, shield, and sight are secured together by the pin 18 as in the preceding form. The base, however, which we will designate by the numeral 19, carries two pivot lugs 20 milled from the metal of the base. The pivot lugs 2O are pierced by pivot openings 25. Between the lugs 20 an arcuate depression or slot 21 is milled, along the length of which a leaf spring 22 is placed. Arranged to fit between the lugs 2O is a convertible sight member 23. The slot in the shield 10, designated by the numeral 24, is widened so as to fit over the lugs 20.

In assembling this form, the shield is placed upon the base with the lugs 2O projecting within the shield as illustrated in Figures 4 and 5. The spring 22 is placed over the slot 21, the sight member 23 is placed upon the spring 22, and the pin 18 is driven through the openings 16 in the shield 10, openings 25 in the lugs 20, and through the pivot opening 26 in the sight member 23. Thus a single pin serves to secure the four parts of the device together, and also serves as a pivot pin for the convertible sight member 23.

The sight member 23 carries an aperture 28 and a. ball 29 arranged at right angles to each other. Two substantially fiat surfaces 27 are formed on the sight member 23,

against which the spring 22 contacts to main-r tain the sight member 23 vertical in either t-he ball or aperture positions. If the sight member is rotated from one position to the other, the spring 22 will be depressed downward into the slot 21 and will allow the sight to be rotated. It is desired to call attention to the fact that the spring 22 constantly clamps the sight member against its pivot pin 18 so that the sight will be held rigidly vertical regardless of wear or play at the pivot point.

lVhen the device is assembled, the position of the spring 22 is below the inner surface of the shield 10, as illustrated in Fig. 5, so that the spring 22 will be held against longitudinal movement. The pin-ball sight 29 is of sufficient length from the pivot hole 26 so that the top of the ball will align with the position Jformerly occupied by the bottom of the aperture in the aperture sight 28. This construction allows a bead to be drawn on the target either through the aperture or pin-ball without it being necessary to adj ust the height of the sight when changing from one style of sight to the other. Convertible sights at present on the market are so constructed that the ball when brought into position will cover the space formerly occupied by the aperture. This made it necessary to adjust the height of the sights on the gun according to the style of sight being used.

It is, of course, apparent to those skilled in the art, that the stationary pin ball sight of Figs. 2, 3 and 6 could be replaced by a stationary aperture sight, as illustrated in broken line in Fig. 8.

It is also within the skill of one skilled in the art to apply the bent or clamped pin principle, illustrated in Fig. 8, to the convertible sight of Figs. 4, 5 and 7, and, since the principle operates similarly and equally well with either type of sight, further illustration thereof is deemed unnecessary.

While a specific, form of the invention has been described, and illustrated herein, it is desired to be understood that the same may be varied, within the scope of the appended claims, without departing from the spirit of the invention.

I-Iaving thus described the invention, what I claim and desire secured by Letters Patent isz- 1. The combination, with a gun sightcomprising a sight member, a shield surroundingsaid sight member and a base supporting said shield, of a pin passed through said base, shield, and sight member, said base, shield, and sight member being constructed so that removal of said pin will permit entire disconnection of the parts.

2. A gun sight comprising a base having a concave upper face and a dove-tailed lower face; an open-ended cylinder havin a slot therein and arranged to rest in sai concave face, a sight member arranged to rest on said concave face and project through said slot into said cylinder, and a pin arranged to be forced ,through alined apertures lin said base, said cylinder and said sight member.

,3. A gun sight comprising a base having a 4concave upper surface; lugs projecting upwardly from said concave surface, a shield arranged to rest on said concave surface and having an opening to it over said lugs; a sight member carried between said lugs and a pin extending through said base, said lugs, said shield and said sight member.

4. The combination, with a gun sight comprising a sight member, a shield surrounding said sight member and a base supporting said shield, of a pin arranged to pass through substantially aligned apertures in said base, shield, and sight member, and adapted to secure same together; the apertures in said shield and said base for the reception of said pin being slightly out of alignment so as to cause said pin to exert a clamping action upon the respective parts.

ture sight and a ball sight substantially at right angles to each other, said aperture and ball sights being arranged so that the length from the pivot point to the top of the ball 5 is substantially equal to the length from the pivot point to the bottom of the aperture. 6. A gun sight having a pivot pin a sight member pivotally mounted on said pivot pin, said sight member carrying a perforated sight and an imperforate sight substantially 10 at 90 to each other, the length of said imperforate sight from said pivot pin to eX- tremity being equal to the distance from said pvot pin to the near side of said perforation.

In testimony whereof, I affix my signature.

' JOHN H. REDFIELD.

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