US2407437A - Rear sight for firearms - Google Patents

Description

QQ 294079457 5R Sept. 10, 1946.

H. F. MossBERG Search Room REAR SIGHT FOR FIREARMS Filed June 9, 1943 3; i /f-/ 2./ f /41 INVENToR iBIYraldFMossberg WQ /ATJTfoRNEY Patented Sept. 10, 1946 Search Heem REAR SIGHT FR FIREARMS Harold F. Mossberg, New Haven, Conn., assignor to Ov F. Mossberg & Sons, Inc., New Haven, Conn., a corporation of Connecticut Application June 9, 1943, Serial No. 490,389

9 Claims.

. 1 This invention relates to improvements in sights for firearms and more particularly to an adjustable rear sight having improved elevation and windage adjusting means in its structure.

One object of this invention is to provide in a rear sight for firearms very eicient elevation and windage adjusting means of improved form and which is comprised of a minimum number of components.

Another object of this invention is to provide a rear sight for a firearm of the above nature having a sight leaf adapted Ito be elevated at one end and means at its other end adapted to adjust the elevated end laterally.

A further object of this invention is to provide in a rear sight of the above nature, a sight base, and a sight leaf which is so resiliently connected to the base as to be substantially floating in respect thereto.

A still further object of this invention is to provide an improved rear sight for firearms which will be relatively inexpensive to manufacture, simple in construction, of relatively few components, compact, ornamental in appearance, and very eicient and durable in use.

With the above and Iother objects in View, which will appear as the description proceeds, there have been illustrated in the accompanying drawing two forms in which the invention may 'be embodied in practice.

vated position;

Figure '7 is a top plan view of the sight `of this invention with the leaf in a position adjusted by the windage adjusting means; and

Figure 8 is a broken top View of a slightly modilied form of a rear sight for firearms embodying the features of this invention.

Referring to the drawing wherein like reference numerals designate like parts throughout the several views, the numeral I I denotes the sight base which has a depending dovetail member |I2 whereby the sight may be detachably con- 2 nected -to a part of a firearm such as a receiver I3, or the barrel thereof, as indicated in Figure 1. The base II is generally U-shaped in crosssection having laterally spaced apart side flanges I4 and I5 upstanding from the respective sides of the base I I.

Floatingly disposed between the side anges I4 and I5 is a sight leaf I6 having lugs I'I and I8 extending from each side and at substantially the center thereof toward and into engagement with .the side flanges I4 and I5 respectively. The outer edge I9 of each of the lugs I'I and I8 which is in engagement with the respective side flange is arcuate in shape, the radius of which is substantially `one-half the dimension between the opposing surfaces of the side flanges I4 and .I5 whereby the leaf I6 may pivot laterally between these flanges about the center of the arcuate edges I9.

To maintain 'the sight leaf I6 in any of its laterally adjusted positions in respect to the side flanges .I4 and I5 leaf springs 2| and 22 are provided. I'he springs 2I and 22 are identical in shape each having a widened and slotted end 23, the slot 24 thereof being adapted to receive the respective lug I1 or I8 over which this end is disposed. Each spring is bowed outwardly at a portion 25 into engagement with the adjacent side flange I4 or I5 and has its other and narrowed end 26 in engagement with .the adjacent side edge of the sight leaf I6. Clearance slots 21 and 28 are formed in the base Il to accommodate the widened ends of the springs 2I and 22.

A post 29, having a peep hole 3 I, is secured to, or formed as a part of, the leaf I6, and is disposed adjacent the rear end 32 of the leaf I6 and vertically extends upwardly therefrom. The rear end 32 of the leaf I6 is widened to overlap the rear end of each of the side flanges I4 :and I5. The laterally extending portions 33 and 34 at the widened end `of the leaf are each provided with a V-shaped front edge 35 adapted to t into any one of a vertical series of V notches 35 formed in the rear edge of each of the anges I4 and I5. The leaf I6 at its widened end 32 is bent downwardly and further widened to form a finger engaging member 31 by which the leaf I6 may be readily grasped to dispose the V-shaped front edges '35 in a selected V notch 36 fto vary or adjust the elevation of the sight in accordance with indicia stamped, or imprinted, on the outer surface of the side flanges I4 and/or I5.

A stud 38 is rotatably secured to the front end 39 of the sight leaf I6, for instance by riveting as shown, and extends downwardly-in front of the front end of the base II. A coiled spring 4I is disposed in a hole 42, provided in the base II for receiving the same, and reacts between the base II, at the bottom of the hole 42, and the stud 38 to urge the leaf I6 forwardly to maintain the V-shaped edges 35 in the selected V notch 36. The base II may be cut away as at 43 to form clearance for the stud 38 f A windage screw 44 having a knurled head 45 is provided whereon the sight leaf I6 is pivoted to swing in its elevating movements and whereby it may be adjusted laterally to compensate for the direction and velocity of the wind wherever the firearm is being used. The screw 44 is screwthreaded through the stud 38 and extends beyond this stud 38 at both sides thereof in under and in rotatable engagement with the undersurface of forwardly extending lugs 46 and 4'I, which lugs are formed integral with, and extend from, the side fianges I4 and I5 respectively.

vThe surface 48 of the screw head 45 is provided with a plurality of equally spaced apart notches v49 in which a steel ball 5I is adapted to seat to releasably lock the screw 44 against accidentally turning and to indicate the amount of adjustment being made. The ball I is rotatably held in a hole 52 provided in the side flange I5 by slightly spinning over the edge of the hole after the ball 5I has been inserted therein, (not shown). The notched face 48 of the screw head 45 is held firmly against the ball 5I by action of the springs 2l and 22 through the sight leaf I6 and the stud 38.

The modified form, illustrated in Figure 8, differs from the previously described form only in having the rear end portion of the leaf 6I provided as a separate part which is firmly but rotatably pivoted to the remaining front portion 62 by a pivot pin 63.

By the provision of the above described new and useful structure, an improved rear sight for firearms is provided having a sight leaf which is readily and efficiently adjusted to compensate for the distance the target is from the user, or length of the range, and to compensate for the direction and velocity of the wind. The sight of this invention is particulaly simple in construction, of a minimum number of parts, and is accurate and dependable in use.

The provision of a common means, the windage screw 44, to form a pivot for the leaf I6, and an adjusting means to laterally swing the leaf, eliminates the usual use of two parts for these purposes. The provision of the lugs I'I and I8, which form bearing members for the leaf I6 in its lateral swinging movements, permits the leaf I6 to be easily swung laterally while in any of its elevated positions, and thus increases the life of the sight by obviating any binding at its pivotal point, bending, or straining, of the leaf when it is elevated, and eliminates the usual requirement of separate and additional parts.

It will be understood that the novel features and principles of this invention may be embodied in other specific forms without departing from the spirit and essential attributes thereof, and it is therefore desired that the present embodiment be considered in all respects as illustrative and not restrictive, reference being had to the claims rather than to the foregoing description to indicate the scope of the invention.

I-Iaving thus fully disclosed the invention, what is claimed as new and for which it is desired to secure Letters Patent, is:

1. In a rear sight for firearms, a base having spaced apart side flanges, a sight leaf fioatingly mounted for swinging movement laterally on said base and between said flanges, said sight leaf having lugs extending from its sides and intermediate its ends into engagement with said flanges and upon which said sight leaf is pivoted, and a windage screw operably engaging one end of said leaf to laterally swing it and upon which said leaf is pivoted to swing upwardly whereby its other end may be elevated.

2. In a rear sight for firearms, a base having spaced apart side flanges, a sight leaf fioatingly mounted for lateral swinging movement on said base and between said flanges, means upon which said sight leaf pivots in its lateral swinging movements on said base, a series of vertically spaced V notches provided in corresponding ends of each flange, V surfaces formed on a first end of said leaf engageable in any selected notch in said flanges, and a windage screw operably engaging the second end of said leaf t0 laterally swing it and upon which said leaf is pivoted to swing upwardly whereby its first end may be elevated.

3. In a rear sight for firearms, a base having spaced apart side flanges, a sight leaf floatingly mounted for swinging movement laterally on said base and between said fianges, means upon which said sight leaf pivots in its lateral swinging movements in respect to said base, a windage screw operably engaging one end of said leaf to laterally swing it and upon which said leaf is pivoted to swing upwardly whereby its other end may be elevated, a head on said screw disposed outside of one of said fianges with a face overlapping the same, a ball seated in a hole provided in the said flange, slots in the overlapping face of said screw head to selectively receive the ball, and resilient means reacting between each side of the leaf and the adjacent flange to resiliently lock the ball in the selected slot.

4. In a rear sight for firearms, a base having spaced apart side flangesa sight leaf floatingly mounted for swinging movement laterally on said base and between said flanges, said sight leaf having lugs extending from its sides and intermediate its ends into engagement with said flanges and upon which said sight leaf is pivoted, a windage screw operably engaging one end of said leaf to laterally swing it and upon which said leaf is pivoted to swing upwardly whereby its other end may be elevated, a head on said screw disposed outside of one of said flanges with a face overlapping the same, a ball seated in a hole provided in the said ange, slots in the overlapping face of said screw head to selectively receive the ball, and resilient means reacting between each side of the leaf and the adjacent fiange to resiliently lock the ball in the selected slot.

5. In a rear sight for firearms, a base having spaced apart side flanges, a sight leaf oatingly mounted for lateral swinging movement on said base and between said flanges, means upon which said sight leaf pivots in its lateral swinging movements in respect to said base, said leaf having a rear end piece pivoted thereto at a rst end thereof, a series of vertically spaced V notches provided in corresponding ends of each flange, V surfaces formed on the said rear end piece engageable in any selected notch in said flanges, and a windage screw operably engaging the second end of said leaf to laterally swing it and upon which said leaf is pivoted to swing upwardly whereby said rear end piece may be elevated.

6. In a rear sight for firearms, a base having spaced apart side flanges, a sight leaf :lioatingly Search Heem mounted for swinging movement laterally on said base and between said flanges, said sight leaf having lugs extending from its sides into engagement with said flanges and upon which said sight leaf is pivoted, said leaf having a rear end piece pivoted thereto at a rst end thereof, a series of vertically spaced V notches provided in corresponding ends of each flange, V surfaces formed on the said rear end piece engageable in any selected notch in said flanges to elevate said rear end piece, and a windage screw operably engaging the second end of said leaf to laterally swing it and upon which said leaf is pivoted to swing upwardly whereby said rear end piece may be elevated.

7. In a rear sight for firearms, a base having spacedvapart side flanges, a sight leaf disposed between said side flanges, means to pivot a first end of said leaf to said base for upward swinging movement to elevate the other end of the leaf and upon which said rst end of the leaf is transversely movable, and a lug extending from each side of said leaf into engagement with the adjacent side flange, the flange engaging end of each lug being arcuate in shape to permit lateral swinging of said leaf.

8. In a rear sight for rearms, a base having spaced apart side flanges, a sight leaf disposed between said flanges, a windage screw upon which a first end of said leaf is pivoted for upward swinging movement to elevate the other end thereof and by which said rst end of the leaf is swung laterally, and a lug extending from each side of said leaf intermediate its ends into engagement with the adjacent side ange, the flange engaging end of each lug being arcuate in shape to provide a pivotal bearing upon which said leaf may laterally swing.

9. In a rear sight for firearms, a base having spaced apart side flanges, a sight leaf disposed between said side flanges, a lug extending from each side of said leaf intermediate its ends into engagement with the adjacent side flange, the flange engaging end of each lug being arcuate in shape about a common center to provide a pivotal bearing upon which said leaf may laterally swing, and common means upon which an end of said leaf is pivoted to said base, for upward swinging movement to permit elevation of the other end of said leaf, and to laterally swing said leaf upon operation of said common means.

HAROLD F. MOSSBERG.

Images