SIGHT

Abstract: A sight (1) for firearms, comprising an elongate rod-shaped element (2) of light absorbing/light guiding material, preferably of acrylic plastic having a fluorescent substance or luminous nylon, a holding means (3-5, 10-12) which closely surrounds portions of said element (2) for holding this, and a fastening arrangement which is adapted to connect the holding means (3-5, 10-12) to the firearm. The novel features of the invention are that the holding means (3-5, 10-12) comprises a first sleeve device (3), which encloses an end portion of the rod-shaped element (2), which when using the firearm is arranged adjacent the shooter's eyes, a second sleeve device (4), which encloses the opposite end portion of the rod-shaped element (2), and a plurality of thin flange members (5), which are arranged in a spaced-apart relationship between the sleeve devices (3, 4).

Description: SIGHT The present invention relates to a sight for fire¬ arms, comprising an elongate rod-shaped element of light absorbing/light guiding material, preferably acrylic plastic having a fluorescent substance or luminous nylon, a holding means closely surrounding portions of said element for holding this, and a fastening arrangement adapted to connect the holding means to the firearm. More specifically, the invention is directed to that part of the sight which is to be found adjacent the muzzle of the barrel, i.e. the bead, and is further intended for the type of shooting in which both eyes of the shooter are kept open, such as in skeet shooting. In shooting, especially in skeet shooting or running deer target shooting, it is important to be able to quickly aim the firearm at a moving target. To facilitate this, the bead should contrast with the background, and it is particularly advantageous if the contrast of the bead with the background is adjusted to the prevailing light conditions. The shooter's eyes, however, must not be dazzled or confused by the bead. Such a bead is disclosed in US patent specification 2,706,335. The bead comprises a rod of fluorescent plas¬ tic material in a holder and ambient light is brought into the front end of the rod, and into a portion of the peripheral surface of the rod, and is emitted at the opposite end of the rod, directed towards the sighting shooter. However, light radiates also through said pe¬ ripheral surface and interferes with the shooter's eye that is not used to sight the firearm. Thus the object of the invention is to provide a good sight having good contrastability which does not disturb the shooter. A further object of the invention is to provide a sight which is inexpensive to manufacture and easy to mount. According to the invention, these objects are achieved by means of a sight which is described in the introductory part and which is characterised in that the holding means comprises a first sleeve device, which en- closes an end portion of the rod-shaped element which, during operation of the firearm, is arranged adjacent the shooter's eyes, a second sleeve device enclosing the opposite end portion of the rod-shaped element, and a plurality of thin flange members, which are arranged in a spaced-apart relationship between said sleeve devices. Further developments of the invention will be appar¬ ent from the features stated in the dependent claims. A preferred embodiment of the invention will now be described for the purpose of exemplification and with reference to the accompanying drawings, in which: Fig. 1 is a side view of one embodiment of the in¬ ventive sight, mounted on a firearm; Fig. 2 illustrates the sight in Fig. 1, as regarded by the left eye of a right-shooter; Fig. 3 illustrates the sight in Fig. 1, as regarded by the right eye of a right-shooter; Fig. 4 illustrates the scattering of light at the active end of the sight according to Fig. 1; Fig. 5 is a schematic side view of a second embodi- ment of the invention, mounted on a firearm; Fig. 6 shows the sight in Fig. 5 as regarded by the left eye of a right-shooter; Fig. 7 shows the sight in Fig. 5 as regarded by the right eye of a right-shooter; and Fig. 8 illustrates the scattering of light at the active end of the sight according to Fig. 5. That part of a sight to which the invention is directed is the bead, which is closest to the muzzle of the barrel and which is generally designated 1 in the different figures. The sight is designed so as to fit most firearms, but is preferably adapted to the firearms during the use of which both eyes of the shooter are kept open for quick sighting and firing, e.g. in skeet shoot¬ ing, running deer target shooting and the like. The sight is usable for pistols, revolvers, guns, sporting rifles etc. and is especially usable for shotguns. With reference to Fig. 1, the sight 1 (bead) com¬ prises an elongate rod-shaped element 2 of light absorb¬ ing/light guiding material, such as acrylic plastic with an added fluorescent substance, luminous nylon (nylon having luminescence) , glass of the optical fibre type and the like, of an optional colour, although red is prefer¬ red. The rod-shaped element 2 preferably is of circular cross-section, but may be of an optional cross-section, if desired. In the preferred embodiment, the circumferen¬ tial surface of the element 2 is coated with a surface layer having a refractive index such that ambient light absorbed through the circumferential surface is substan¬ tially completely reflected inside the element (mirrored) and is emitted through a non-coated end face 9 of the element - the end face closest to the (sighting) shooter according to the embodiment in Figs 1-3, and the end face furthest away from the shooter according to the embodi¬ ment in Figs 5-8. However, a certain flow of light from the circumferential surface will appear, and this flow of light is screened off for the shooter's non-sighting eye by means of the inventive sight 1. Referring once more to Fig. 1, the sight 1 comprises a holding means 3-5 which closely surrounds portions of the rod-shaped element 2 for holding and screening off the same. Thus, the holding means consists of a first elongate sleeve device 3, which encloses said end face 9 of the element 2 at a distance from the free end of the sleeve device 3. Consequently, said sleeve device is sub¬ stantially empty and is of a length that is sufficient to screen off the light emitted from the end, such that only the active (sighting) eye of the shooter receives this; cf. Fig. 4. The inside of the sleeve device is suitably provided with a blooming coat. A second sleeve device 4, which preferably is shorter than the first sleeve device 3, encloses the opposite end of the rod-shaped element. A plurality of thin flange members 5 are arranged at a dis¬ tance from each other between the sleeve devices 3 and 4 and are spaced from these. Also the flange members 5 closely surround portions of the element 2 and screen off the intermediate, uncovered portions of the element 2 for the shooter's nonactive eye, in the embodiment presented the left eye of a right-shooter (the shooter aligns the firearm by means of his right eye); cf. Fig. 2 which shows the sight as regarded by the left eye of the right- shooter, and Fig. 3 which shows the sight as regarded by the right eye of the right-shooter. Fig. 1 shows that the flange members 5 have an outer diameter conforming to that of the sleeve devices, which is preferred from the point of view of production, but they can, of course, also have a greater outer circumfer¬ ence, whereby a smaller number is required for screening off. Moreover, the flange members 5 are equidistantly spaced from each other, but they may be arranged in any desirable manner, e.g. they can be mutually spaced apart a distance that increases linearly from the first sleeve device 3 towards the second sleeve device 4. The sleeve devices 3 and 4 and the flange members 5 can be arranged separately or be joined to each other by means of a joining piece of material (not shown) , in which case the entire holding means 3-5 can be cut from one and the same piece of pipe. The rod-shaped element 2 is preferably glued to the holding means, but can also be arranged with a press fit or the like so as to permit the element to be replaced. The inventive sight thus absorbs light emission from the ambience through its circumferential surface and guides the light to an end face 9, such that the luminous end face contrasts with the background and helps the shooter align the firearm. Thus it is important to opti¬ mise the brought-in light, and this means that the flange members 5 should be thin so as to reduce the size of those portions of the circumferential surface which they cover. Since the light is damped with the length of the rod-shaped element 2, there is an optimum length for the element. One of the important advantages of the rod is that is has a passive light-controlling function. The more ambient light the stronger light spot, and vice versa in case of weaker ambient light. In practical tests, the sight has been found to function in an excel- lent manner, and one of the great advantages is that, by means of this sight, the shooter can use both eyes simul¬ taneously, focus them on the object and all the time have the light spot in the field of vision. It is also pos¬ sible to provide the second sleeve device 4 with a mirror device 17, or provide the end of the element 2 in this sleeve device with a reflective coating so as to increase the flow of light at the end face 9, when necessary. Reference is now made especially to Figs 1 and 3, which illustrate the fastening arrangement of the sight according to the preferred embodiment. The fastening ar¬ rangement is adapted to connect the holding means 3-5 to the firearm, which is schematically illustrated in the form of a shotgun, the muzzles of the barrels 6 being illustrated only. On top of the uppermost barrel a bar 7 is arranged, and the fastening arrangement is adapted to be fixed to this bar. The fastening arrangement comprises a strip-shaped member 8, which preferably is made of the same material as the holding means 3-5 and preferably is of such a thickness as to be flexible. Moreover, the mem- ber 8 preferably is of substantially the same length as the total length of the holding means 3-5, and a width greater than that of the holding means. The holding means can, in some suitable manner, for instance by gluing, soldering or brazing, be attached to the member 8 or be integrated therewith. One side (major face) 15 of the member 8 thus supports the holding means, and its oppo¬ site side (major face) 16 is adapted to be attached to the bar 7 of the firearm e.g. by means of an adhesive. Thus, the sight can be marketed together with a double- adhesive tape attached thereto, thereby allowing the buyer himself to stick the sight on, or the sight can be attached by means of screw joints, soldering, brazing, gluing etc. Alternatively, the member 8 can be mounted on an adapter or a telescope mounting which is adapted to engage the firearm mounting for a telescope sight (not shown) . It may be convenient to use a nonyielding member 8 instead of a flexible one if the length of the member is greater than that of the adapter or mounting. In Figs 5-8, a further embodiment of the invention is shown. This embodiment differs from the one previously presented mainly by the end of the rod-shaped element 2 adjacent the (sighting) shooter being blocked and not emitting any light, which, however, the end of the ele¬ ment adjacent the muzzle of the barrel does. The second sleeve device 4 is here substantially U-shaped, the first leg 10 of the U-shape being arranged in an enclosing man- ner on the light-emitting end of the rod-shaped element 2, and its second leg 11 being oriented in a plane ex¬ tending through the rod-shaped element 2 and the barrel (barrels) of the firearm, i.e. perpendicular to the mem¬ ber 8. The arcuate portion 12 of the sleeve device 4 between the legs 10 and 11 comprises reflective means which transmits the light from the first leg 10 (from the end face of the element 2) to the second leg 11. The reflective means can be a prism or a pair of mirrors 13 and 14 as indicated in Fig. 5. The length of the second (upper) leg 11 is sufficient to screen off the light emitted from the end of the leg, such that only the active (sighting) eye of the shooter can see this, cf. Fig. 8, and the inside of said leg is suitably provided with a blooming coat. Fig. 6 illustrates the sight (bead) 1 as regarded by the left eye of a right-shooter, and Fig. 7 shows the sight as regarded by the right eye of a right-shooter. The sight also comprises flange members and a fastening arrangement, which are suitably designed in the same way as in the embodiment presented above (Figs 1-3) . Also the rod-shaped element is preferably designed as stated above. The invention is not restricted to that described above and shown in the drawings and can be modified within the scope of the appended claims.

Claims: CLAIMS 1. A sight (1) for firearms, comprising an elongate rod-shaped element (2) of light absorbing/light guiding material, preferably acrylic plastic having a fluorescent substance or luminous nylon, a holding means (3-5, 10-12) closely surrounding portions of said element (2) for holding this, and a fastening arrangement adapted to con- nect the holding means (3-5, 10-12) to the firearm, c h a r a c t e r i s e d in that the holding means (3-5, 10-12) comprises a first sleeve device (3), which en¬ closes an end portion of the rod-shaped element (2), which, during operation of the firearm, is arranged adja- cent the shooter's eyes, a second sleeve device (4) en¬ closing the opposite end portion of the rod-shaped ele¬ ment (2), and a plurality of thin flange members (5), which are arranged in a spaced-apart relationship between said sleeve devices (3, 4) . 2. The sight as claimed in claim 1, c h a r a c ¬ t e r i s e d in that the flange members (5) are equi- distantly spaced from each other. 3. The sight as claimed in claim 1, c h a r a c ¬ t e r i s e d in that the flange members (5) are mutu- ally spaced apart a distance that increases linearly from the first sleeve device (3) towards the second sleeve device (4) . 4. The sight as claimed in any one of claims 1-3, c h a r a c t e r i s e d in that the flange members (5) have the same outer diameter as the sleeve devices (3, 4) . 5. The sight as claimed in any one of the preceding claims, c h a r a c t e r i s e d in that the rod-shaped element (2) is exchangeably arranged in the holding means (3-5, 10-12) . 6. The sight as claimed in any one of the preceding claims, c h a r a c t e r i s e d in that the length of the second sleeve device (4) is substantially smaller than that of the first sleeve device (3) . 7. The sight as claimed in any one of claims 1-5, c h a r a c t e r i s e d in that the second sleeve de- vice (4) is substantially U-shaped, the first leg (10) of the U-shape being arranged in an enclosing manner on the light-emitting end of the rod-shaped element (2) and the second leg (11) of the U-shape being oriented in a plane extending through the centre of the rod-shaped element (2) and the barrels (6) of the firearm. 8. The sight as claimed in claim 7, c h a r a c ¬ t e r i s e d in that the arcuate portion (12) of the U- shape comprises reflective means (13, 14) which transmit light from the first leg. (10) to the second leg (11) . 9. The sight as claimed in any one of the preceding claims, c h a r a c t e r i s e d in that the fastening arrangement comprises a strip-shaped member (8), prefer¬ ably of the same material as the holding means (3-5, 10- 12) , having substantially the same length as the total length of the holding means and a width greater than that of the holding means, that the first major face (15) of the strip-shaped member (8) is fixedly connected to the holding means (3-5, 10-12), and that the second major face (16) of the strip-shaped member (8) is adapted to be attached to the firearm by means of an adhesive, a screw joint and the like. 10. The sight as claimed in claim 9, c h a r a c ¬ t e r i s e d in that the member (8) is non-yielding, and that it is attached to the firearm by means of an adapter or the like, which is adapted to engage the fire¬ arm mounting (7) for a telescope sight.

Inventors: PERSSON KURT, PERSSON, KURT
Applicants: PERSSON KURT, POLARIT FOERSAELJNINGS AB, PERSSON, KURT
Application year: 1995
Main classification: F41G1
IPC codes: F41G1