US2788600A - Gun-sight mechanism - Google Patents

Description

April 16, 1957 J. POKORNY 'GUN-SIGHT MECHANISM 2 Sheets-Sheet i Filed May 27, 1955 INVENI' OR Janzes PCKorrcq.

ATTORNEY United States PatentO GUN SIGHT' James Pokorny, Grants Pass, Oreg.

Application May 27; 1955;.SeriaYNb. 511,668

9: Claims. (Cl. 42-'-1) This'invention" relates-to gun sights, andit particularly relates" to gun sights having adjustable" means for preventing entanglingor snagging ofthe-si'ght when the gun islieht' in'a holster or pocket;

True-target sightsonpistols, rifles orthe like; aregenerally undercut; that is; they-are formed convex" on the outer side and concaveorr the inner side with the two sides-converging'in'a rathersharppoint; The sights are undercut or'con'caved in orderto minimize reflectionof light into the eyes of'theshooter; they are also'provided with sharp corners'and" edges-in order-to-present a clear and sharp picture to the shooter. However,.this undercutting and sharp edging tends to snag'tlie barrel of the gun when it :is inserted into-a holding means such as a holster'or a. pocket. As a result, either thBahOldCI is torn, the gun; sight is damaged, or-hotht occur.

It is an object ofthe present invention to provide a gun sight which is adapted toprovide all the light reflectioni prevention and. sharpness" of objectivity oh the ordinary true gun sight while, at the same time, eliminating all possibilities of snagging in a holster or the like.

Another object of the present invention is to provide a gun sight which is easily adjusted from a shooting position to a holstered position.

Another object of the present invention is to provide a non-snagging gun sight which can easily be installed on any ordinary gun.

Other objects of the present invention are to provide an improved gun sight, of the character described, that is easily and economically produced, which is sturdy in construction, and which is highly efiicient in operation.

With the above and related objects in view, this invention consists in the details of construction and combination of parts, as will be more fully understood from the following description, when read in conjunction with the accompanying drawings in which:

Fig. 1 is a perspective view of a gun sight embodying the present invention, shown mounted on the end of a gun barrel. f

Fig. 2 is an exploded view, of the device shown in Fig. 1.

Fig. 2-a is a perspective view of the plunger used in the device.

Fig. 3 is an enlarged, longitudinal, cross-sectional view of the device of Fig. 1, showing the sight in intermediate position.

Fig. 4 is a view similar to Fig. 3, but showing the sight in ready position for use.

Referring now in greater detail to the drawings wherein similar reference characters refer to similar parts, there is shown a gun barrel having an upwardly extending rib 12. The fore portion of the rib 12 is provided with a longitudinal groove 14 which is intersected by a pair of drilled holes 16.

Fitting within the groove 14 is the downwardly extending flange 18 of a gun sight assembly 20. The flange 18 is provided with openings 22 which mate with openings 16 to receive appropriate locking pins 24.

C&

The assembly 20 comprises a sightblade 26 which consists ofamupstanding portion having aconvex front surface-28; a-coneave rearsurfaceaSfl, anda sharp pointed apex 32. between the front and rear' surfaces;

Eongitudinally spaced fr'onr the sightblade 26, as by a groove 34; is a ramp portion 36.- The ramp 36 is providedwith' a convexl'y Y curved upper" surface 38 which terminatesat 40 in common plane: with the bottom edge 42 of the blades 26. A bore 44 extends through the front'. faee'ofthe ramp Miami in this here is positioned a sprii1g= 46 bearii1g against therear'end 47 of a plunger 48? square in eross section' and" curved forwardly and downwardly at its fi'ont face 49'; i

A pair of plates 50, each having a curved top rear portiona 51 and" an fiat bottom edge 53; are positioned or either side of the" sight assembly 20'. The bottom edges 53? of the plates Sll lie flush on the rib 12' at either-*side of-the-groove14, and the plates, themselves, are' connected to the sight assembly by means of 'pins 52 fitting througli ali'gned openings 54 in the assembly and 56'- in=- the plates 50E Notches 58- areprovided in the upper surface of 'ea'cli' plate 50:-

Positioned'within the groove34 is a blade or adaptor 6ti'having'a curved elongated slot 62 at theend adjacent the plunger 485 end' ofthe blade or adaptor 60 isrounded" at its tip-61" to cooperate with plunger face 49 and the upper-surface 63 adjacent the tip 61' is contoured' to:. complement the" curved contour of the adjaeent portion ofithe ramp. 36. One of the pins 52 ex tends' tlirough the slot 62 to pivotally connect theblade or adaptor 60. 10 the remainder of theassembly; The elongated; curved configuration of the slot 62 provides a lost motion= connection at' this point. The blade 6%) tapers outwardly-from the-rear=end 61 and the' front end 65 is, therefore, somewhat Wider than the rear end. This wider front end 65 is provided with an outwardly and forwardly extending pin 64 in its front face; and this pin 64 is adapted to seat within either of two grooves 66 and 68 in the inner, concave rear face 30 of the sight blade 26. A notch 70 extends downwardly from the top surface of blade 60, this notch 79 being adapted to be engaged by a finger nail or knife blade for moving the blade 60 against spring tension 46. The notches 58 in the side plates 50 permit the finger or knife blade to be readily inserted. As will be observed, all the top surfaces of ramp 36, of plate 50 and blade 60 are serrated or otherwise treated to reduce reflection of light.

In operation, the blade or adaptor 60 can be lowered on its lost motion pivot 52 and slot 62 to expose the undercut side of the fixed sight blade 26. In this lowermost position, as shown in Fig. 4, the pin 64 is inserted in slot 68 and is held there by the spring-pressed plunger 48. In this position, the sight 32 is clear and sharp to the view, and the gun is suitable for accurate shooting. When the gun is to be holstered, a knife blade or finger nail is inserted in slot 70 and the blade 60 is pushed back against the pressure of the spring 46 until the pin 64 clear the slot 68. Thereafter, the blade or adaptor can be lifted until the pin 64 snaps into a slot 66 under pressure of the spring 46. In this position, as shown in Fig. 1, the blade or adaptor 60 forms a continuation of ramp 36 and sight blade 26 so that a substantially smooth contour is provided which is relatively free of sharp edges which might tend to snag when holstered. To lower the blade or adaptor 60, the blade or adaptor is again pushed backwards against the pressure of the spring-pressed plunger and is then lowered until the pin 64 snaps into groove 68.

Although this invention has been described in considerable details, such description is intended as being illustrative rather than limiting, since the invention may be variously embodied, and the scope of the invention is to be determined as claimed.

Having thus set forth and disclosed the invention, what is claimed is: g 4

1. A gun assembly including a gun barrel having a sight device comprising a pointed sight blade-having a concave rear surface, a vertically movable adaptor positioned on said barrel adjacent said sight blade, said adaptor having an upper surface which, when the adaptor is moved to its uppermost position, forms a gradually inclined surface forming a continuation of the pointed portion of said sight blade.

2. The gun assembly of claim 1 wherein said adaptor is nature of this mounted on said gun barrel with'a lost motion pivotal connection, and a spring-pressedplunger on said gun barrel urging said adaptor toward said sight blade.

3. The gun barrel assembly of claim v2 wherein said adaptor is provided with a front surfacehavingia'contour complementary to the concave contour of the rear surface of said sight blade, a pair of spaced apart grooves in said rear surface of said sight blade, and a forwardly extending pin on the front surface of said adaptor, said pin being adapted to extend into each of said grooves upon a predetermined pivotal movement of said adaptor.

4. In a gun barrel assembly including a gun-barrel, an upstanding rib on said barrel, a gun sight base having a downwardly extending flange inserted in a longitudinal groove in said rib, a sight blade on one end of said base, said sight blade having a concave rear surface extending downwardly from a pointed apex, a ramp on the opposite end of said base, said ramp having a gradually convexly curved upper surface, a ramp blade pivotally mounted,

for resiliently locking said ramp blade in either of two predetermined positions against said sight blade, said ramp blade forming a substantially continuous surface between the point of said sight blade and said ramp when said ramp blade is in one of said predetermined positions, and forming a discontinuous surface between the point of said sight blade and said ramp when in the other of said predetermined positions.

5. The gun barrel assembly of claim 4 wherein said base is releasably held on said gun barrel by releasable coupling pins.

6. The gun barrel assembly of claim 4 wherein a pair of guard plates are positioned on said gun barrel on each side of said base and its attached components.

7. The gun barrel assembly of claim 4 wherein a pair of guard plates are positioned on said rib on each side of said base, said plates extending upwardly adjacent said sight blade, ramp blade and ramp, said ramp blade-being pivotally connected to said guard plates, and a notch on the upper surface of each of said guard plates.

8. The gun barrel assembly of claim 4 wherein said means urging said ramp blade toward said sight blade comprises a spring-pressed plunger positioned within a bore in the front face of said ramp.

9. The gun barrel assembly of claim 4 wherein said ramp blade is provided with a notch in the top surface thereof for cooperation with a means for moving said ramp blade against said urging means.

References Cited in the file of this patent UNITED STATES PATENTS 875,016 Uren et al. Dec. 31, 1907 with a longitudinal lost motlonconnect on, between sald 2,610,405 Dickinson Sept. 16, 1952 sight blade and sald ramp, the pivot point being ad acent said ramp, means urging said ramp blade toward said 35 FOREIGN PATENTS sight blade, said ramp blade having a front surface com- 455,050

plementary to the rear surface of said sight blade, means Canada May 16, '1950 Qa ar:

Images