US1370478A - Gun-sight - Google Patents

Description

329-254. UR 193709478 5R lH". PAuLsoN. GUN SIGHT. y APPLICATION fiLEb 1mm. 1920. 1,370,478. Patented Mar. 1, 1921y commessa?- mssranaasws UNITED STTS PATNT FFIC.

GUN-SIGHT.

Specification of Letters Patent.

Patented Mar. 1, 1921.

Application led January 2, 1920. Serial No. 348,756.

To all 'whomzt may concern:

Be it known that I, HANS PAULsoN, a citizen of the United States, residing at Orting, in the countyof Pierce and State of Washington, have invented certain new and useful Improvements in Gun-Sights; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the s ame.

This invention relates to gun sights and more specifically to an improved adjustable sight for changing the trajectory of a gun on which this sight is mounted.

One object of this invention is to provide an improved sight which comprises a plurality of separate and independently adjustable indexing members on the manipulator or actuator, which members can be set and secured in set position relative to the actuator, for indexing the sighting points position which 'corresponds to a predetermined trajectory of the gun.

A further object is to provide an 1mproved sight of this character having an actuator provided with permanent markings or index lines which are adjustable with relation to one another, so that these markings can easily be arranged and re-arranged to suit different guns which have their front and rear sights spaced different distances, this feature also enabling the adjustable rear sight to be placed on the gun, or desirable part of the gun-stock, regardless of the distance between this rear sight and the front sight.

Other objects and advantages will be specifically pointed out .or'implied inthe following detailed description and claims, in connection with the accompanying drawings in whichi Figure 1 is a perspective view of a portion of a gun having my improved sight mounted thereon.

Fig. 2 is a side elevation of the sight de tached from the gun.

Fig. 3 is a central vertical sectional view, the section being taken along the line 3-3 of Fig. 2.

Referring to these drawings in detail, in which similar reference characters correspond with similar parts, and in which the gun-stock 1 is illustrated merely for the purpose of showing the application of my invention, the attaching or connecting members 2 and 3 also being of previously known construction, the invention consists in the construction and arrangement of parts hereinafter specifically described as follows:

The main support or body member 4L is pivotally connected to the member 2 by means of the member 8, and this main body member is formed with a cylindrical bore 5 which extends through a cylindrical bearing 6, the latter being provided with an axially parallel slot 7 which extends from end to end of this cylindrical bearing. The body member 4 is also provided with an annular flange 8 which surrounds the lower end of a manipulator or actuator 9. This actuator has a cylindrical outer surface, and its inner surface is screw-threaded from end to end. rlhe annular inner surfaces of the screw threads are seated against and rotatable on the outer surface of the tubular bearing 6 and the lower end of this inember is slightly flared or flanged and engaged by the inwardly turned upper edge of the flange 8. Therefore, this member 9 is se.- cured against axial movement relative to the member 1, but can be freely rotated with relation thereto.

A seating member 10 is provided with a cylindrical shank 11 which is formed with teeth 12 that extend through the slot 7 into engagement with the screw threads of the actuator 9, and therefore, when the actuator is rotated about the bearing 6, the sighting member 10 is raised or lowered, according to the direction in which the actuator is rotated. The sighting member may either be provided with an aperture or peep-hole 13 or it may be provided with a notch or other form of sighting point.

Considered broadly, the structure described in the foregoing has been previously known, and is not claimed by me except in combination with the structure which will now be described as follows:

The actuator 9 is provided with an outwardly extending flange or shoulder 14 on which is seated any appropriate number of rings or indexing members 15, these members being superposed and being separately and independently rotatable around the cylindrical outer surface of the actuator 9. However, each ring 15 is provided with a set-screw 17 for securing it in an infinite number of different adjustments on the actuator. It should be understood, however, that it is not intended for the rings 15 to have axial movement on the actuator except for the purpose of placing them on the actuator, and when speaking of adjustment of these rings, rotary adjustment is meant. Each ring 15 is provided with one or more indexing points or lines 18 which may be brought into registration with one edge of an indexing element or arm 19, as illustrated by the indexing line whose ordinal is 4 in Fig. 2. The indexing member of which the arm 19 is an element comprises a. ring 20 with which this indexing arm 19 is preferably integral. This ring 2O is tightly fitted on the outer surface of the iange 8, and it may be secured in this position by solder or other appropriate means (not shown). By thus securing the indexing member 19-20 in place, it can be removed and replaced with comparative ease in the event its arm 19 becomes bent or broken.

Referring now to Fig. 3, it will be seen that the indexing` arm 19 extends from the bottom to the top of the series or set of adjustable indexing members 15 and is adapted to register with each of the indexing lines 18, either when t-he rings 15 are adjusted on the actuator, or when the actuator is turned on its bearing. Therefore, the stationary indexing member 19-20 or its arm 19 may be considered a universal indexing member, being universal or common with respect to each of the rings 15 and with respect to each of the indexing lines 18. In this connection, it is pointed out that although only one indexing line is illustrated on each ring 15, a plurality of such indexing lines may be provided on each ring 15, for a purpose which will hereinafter be explained.

In explaining` the operation and advantages of this device, it may be assumed that the device has been in use on a gun and located at a distance of three feet from the front sight, the indexing rings 15 being adjusted according to this specified distance between the sights. It may also be assumed that the shank 11 is provided with indexing lines 21, each line 21 being adapted to register with the top of the bearing 6 for indicating the correct elevation of the sighting member 10 for this specified distance between the sights (three feet), the

spaces between the graduations or indexing lines 21 representing or corresponding to one hundred yards, respectively, between the muzzle of the gun and the target. It may be assumed that the upper line 21 represents the trajectory for hitting the mark at 100 yards or less, the next lower one for 200 yards, the third for 300 yards, and that the fourth is registering with the top of the bearing 6 and indicates that the sight is set for 400 yards. The fourth ring 15 (from the bottom) has its indexing line 18 in registry with the indexing arm 19, agreeing with the fourth indexing line 21 (from the top) in its indication of the correct trajectory for 400 yards. Now it is obvious, that either the indexing lines 18 or the indexing lines 21 could be dispensed with, if al1 guns had front and rear sights equally spaced, but such is not the case, and therefore, the adjustable indexing elements 18 are necessary in order that the sight can be made useful and accurate when applied to a gun having a greater or less distance (than three feet) between the front and rear sights; it being obvious that the permanently spaced lines 21 cannot be changed because they are indented or scratched in the surface of the shank 11, and if merely applied on the surface, so as to be erased and changed in space, they are likely to become accidentally erased and the sights thereby rendered use-less until these indexing lines are restored. Therefore, when the sight is changed from a gun which has its sight spaced three feet, to a gun which has its sight spaced two feet (for instance), the indexing lines 21 are used only to indicate the approximate elevation of the sight for a given distance between the gun and the target, and the rings 15 may be adjusted to bring their respective indexing lines into registry with the universal indexing member for indicating the correct or exact elevation of the sighting member for the given distances between the gun and the target.

1n setting the indexing member 15, having placed the sight on the gun-stock without regard to the distance between this rear sight and the front sight, the rear sight is elevated to the approximate height for the proper trajectory at 100 yards (for instance),and now the gun is accurately aimed and fired at the target, and if the missile strikes below the target, it is known that the sighting member needs to be further elevated, and on the other hand, if it strikes above the target, it is known that the sighting member needs to be lowered. After thus trying the gun until the accuracy of fire indicates that the sight is properly elevated for one hundred yards, the lower ring 15 is adjusted by loosening the screws 17 and turning this lower ring until its indexing line 18 registers with the arm 19. The gun is now aimed and fired at a target spaced two hundred yards therefrom, and the sighting member is adjusted in the manner previously described for trial at one hundred yards. When the target shows that the sighting member is properly elevated, the second ring 15 (from the bottom) is likewise changed so that its indexing line registers with the arm 19. Likewise, each of the superposed rings are adjusted after the elevation of the sight has been determined by trial on a target at 300, 400, 500

OMETQl-WL and 600 yards respectively. It is to be understood that each of the set screws 17 is to be tightened for securing its ring 15 in fixed position on the actuator 9 when the respective rings 15 are adjusted to register with the universal indexing member.

Having set or adjusted the sight according to its accuracy in hitting the target, it is obvious that when it is subsequently desired to lire on a target at 100 yards, it is only necessary to adjust the actuator for moving the sighting member to the approximate elevation and then turning the actuator until the indexing line 18 of the lower ring 15 registers with the universal indexing member. Likewise, when it is desired to lire on a target at 200 yards, the actuator is turned until the sighting member is elevated to the approximate height Jfor 200 yards, and the actuator is then turned to bring the indexing line 18 of the second ring (from Lthe bottom) into registration with the universal indexing member. Likewise, the third, fourth and fifth rings from the bottom are adjusted for bringing their indexing lines into registration with the universal indexing member.

It is to be understood that a greater or less number of rings may be employed, and that the invention is not limited to the exact construction and arrangement of parts described and shown, but that changes may be made within the scope of the inventive ideas as implied and claimed.

What I claim as my invention is:

1. In a gun-sight, a main support, a sighting member supported thereby, an actuator connected with the sighting member and operable to raise and lower the latter, a set of indexing members mounted on said actuating member and capable of adjustment independently of one another, and a universal indexing member supported by said main support in such position that each of the indexin members of said set can be caused to reglster therewith by said adjustment on said actuating member.

2. In a gun-sight, a main support, a sighting member supported thereby, an actuator connected with the sighting member and operable to raise and lower the latter, a set of superposed rings each having an indexing point on its periphery, these rings being mounted for rotation independently of one another on said actuator, a universal indexing member supported by said main support in such position that the indexing point of each of said rings can be caused to register therewith by rotation of the rings on the actuator.

3. In a gun-sight, a main support, a sighting member including an upright shank and supported by said main support, an internally threaded actuator having its threads engaged with said shank and being rotatable for raising and lowering the latter, a set of rings each having thereon an indexing point and being mounted for rotation on said actuator, a universal indexing member in a position on said main support to register with each of said indexing points when the rings are rotated on said actuator, and means carried by each ring to secure it in different adjustments on said actuator.

4. In a gun-sight, a sighting member including an upright shank, an internally threaded actuator having its threads engaged with said shank and being rotatable for raising and lowering the latter, a base including an annular flange within which said actuator is ournaled, an indexing member comprising a sleeve and an arm extending laterally from the sleeve, said sleeve being fitted around said annular flange and supporting said arm in an upright position, and a set of indexing members, each comprising one 0r more indexing points and being mounted on and rotatable with said actuator and separately adjustable with relation to the latter and to one another, said arm being disposed adjacent to the paths of adjustment of the indexing member of said set and adapted to register with the said indexing points.

In testimony whereof I have hereunto set my hand.

HANS PAULSON.

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