US2924881A - Magnetic telescopic sight mounting for guns - Google Patents

Description

Feb. 16, 1960 G.`. GEE

MAGNETIC TELESCOPIC SIGHT MOUNTING OR GUNS INVENTOR. GEORGE E. G55

. N XN. v z L@ si Qv/ xNF .an mm. M A J Bv E QN Q un m\ f n Filed F n MAGNETIC TELESCOPIC SIGHT MOUNTING FOR GUNS This invention relates toY telescopic-gun sights and more particularly to a magnetic vtelescopic sight .mounting for guns.

Heretofore telescopic gun sights have been employed with screw or other means for securing the sight upon the barrel. However, often there is a need for a quick removal of the telescopic sight Vfor a closeup. shot. In most cases this quick disassembly is diiicult, if not limpossible.

It is the object of the present invention to provide a magnetic type of telescopic sight mounting for guns whereby the said gun sight may be quickly removed for immediate use of the gun without the sight; and further may be replaced conveniently and with the assurance that the gun sight will occupy the same relative position with respect to the barrel, to which it had been previously set.

This and other objects will be seen from the following specification and claim in conjunction with the appended drawing in which: y

Fig. 1 is a fragmentary side elevational view of a gun with the present gun sight assembly mounted thereon.

Fig. 2 is a fragmentary section taken on line 2-2 of Fig. 1.

Fig. 3 is a section taken on line 3-3 of Fig. 1.

Fig. 4 is a fragmentary elevational section illustrating the gun sight mounting plate as apertured to cooperatively receive the telescopic sight securing brackets.

Fig. 5 is a fragmentary section of a different form of magnetic mounting means.

Fig. 6 is a plan view of another form.

Fig. 7 is a section taken on line 7-7 of Fig. 6.

It will be understood that the above drawing illustrates merely one preferred embodiment of the invention and that other embodiments are contemplated within the scope of the claim hereafter set forth.

Referring to the drawing, the present gun is fragmentarily illustrated at 11 and includes the conventional barrel 12 with conventional front sight 13.

An elongated mounting plate 14 is secured upon a rear portion of said barrel by a pair of screws 15, there being formed in said mounting plate a pair of longitudinally spaced slots 16 of pre-determined cross sectional shape.

In the present embodiment of the invention, said slots have an upper portion 17 of cylindrical form, an intermediate portion 18 of frusto-conical shape and a communicating cylindrical portion 19 of circular shape.

Permanent type disc magnets 20 are secured within circular slots 19 as shown in Fig. 4. The remaining slot portions 17-18 are adapted to cooperatively and snugly receive the depending lugs 29-30 which form a part of spaced mounting means for the telescopic sight 21 and are formed of steel or other magnetic material soas to be retained within the slots 16, upon assembly therein, with such force that the said sight may not be accidentally dislodged.

Plate 14 has an elongated groove 14 in its under- Surface adapted to receive portions of barrel 12.

flted Srres Patel l at 23 iixedly and retainingly'v engages'the telescopic sight.'

The telescopic sight 21, has acylindricaly portion o barrel 22 upon which are secured apair of spaced mount'- ing means or brackets 23.

The structure of said mounting means. and the assembly of the depending lugs with respect tothe mounting plate 14 are shown in Fig. 3. Said mounting means includes a top arcuate bracketelement 24 with` outturned horizontal anges 25. The lower bracket element 27 has an arcuate groove which cooperates with bracket element 24 for cooperatively receiving the telescopic sight barrel 22. f 1

The. bracket element 27 also has a laterally extending pair of flanges 26 which .cooperatively engage flanges 25,Y

which flanges are secured together vby. the screws. 28, and whereby the bracket element generally' indicated- The lower bracket'elements 27 have dependingthere-4 from a` pair vof longitudinally spaced lugs 294-30- of a.' pre-determined cross sectional shapev corresponding in shape and size to the spaced slots 116, inmounting plate 14 I Y y Said lugs include the upper` cylindrical`V portion 29 'adapted for projection within cylindrical slot element Y17 and the frusto-conical portion 30 adapted for snug cooperative nesting within the corresponding slot 18 in mounting plate 14. Y

The important consideration is that the lugs 29-30 be of the same shape and size as the slots 16 to thereby provide in cooperation with the strong magnets 20 a very effective and positive means for Vsecuring the telescopic sight upon the gun barrel. At the same time the central portion 31 at the sight would be manually grasped and with a reasonable amount of pressure said sight is normally removable. This would be particularly useful vwhere additional closeup shots are required asin hunting and where the telescopic sight Vwould be in theway.

The location of the slots 16 assures theA return Yof the telescopic sight to its initial position. l Y

j The mounting plate 14 is preferably constructed of nouj magnetic'material such'as hard aluminum or plastic to prevent weakening of the magnets. y

It s contemplated thatthe slots 16 by reversal of the arrangement may be formed AinV the undersiu'face of bracket elements 27 and the lugs 29430 projected upwardly from mounting plate 14.

Fig. 5 fragmentarily illustrates a slight Ivariation in the present magnetic telescopic sight mounting and wherein the mounting plate' fit) of nonmagnetic material is' shown having an undercut elongated groove 14', as in Fig. l for cooperative registry with barrel 12. Y

A pair of spaced bores 32 one of which is shown, are formed in the upper portion of mounting plate 10 corresponding to the structure of Fig. 4, and tightly positioned in each bore is a cylindrical magnet 19 tion, and containing therein material.

Within said magnet there is provided a cylindrical slot and a communicating frusto-conical openingformed in said core adapted to cooperatively receive the projecting similarly shaped portions 29 and 30' of the Vnonmagnetic lug. Its upper end is press fitted or otherwise secured within recess 37 formed in the undersurface of Y in upright posia core 34 of non-magnetic lower bracket element 27 corresponding to lower bracket element 27, Fig. l. Bracket 27' is constructed ofa magnetic material so as to cooperatively engage the circular upper end of magnet 19'.

The lug 29'-30' is constructed of a non-magnetic j metal and is used for properly locating the bracketelements 27', with magnetic forces being effective through the upper end of the magnet and the lower end of bracket element 27'.

Sleeve 19 is initially constructed of a rrnagnetizableY 2,924,881 Vlatterited- Feb.- 16,fy v196() I material such as iron or steel and there is inserted a nonmagnetc core 34 such as of hardened aluminum which initially fills the sleeve. The upper portion of said core is ground out to the internal surface 33 of the upper portion of s'aid magnet and additionally a frus'to-conical aperture 36 is cut in the upper surface of the core adapted to receive the lug 29-30' also constructed of a nonmagnetic material.

; As a nal step, the sleeve i9 is magnetized and press Fitted or otherwise secured within mounting plate 10.

Another variation is shown in Figs. 6 and 7 wherein the mounting plate 38 has formed therein a pair of spaced cylindrical slots 39 adjacent its top surface which terminate in frusto-conical apertures 40, being adapted to receive a non-magnetic similarly shaped lug which depends from the lower end of the lower mounting bracket 27', in the same manner yas illustrated in Fig. 5.

Said bracket element 27' is constructed of a magnetic material and is adapted for securing registry over the top surfaces of the respective spaced pairs of har magnets 42 which are nested and secured within similarly shaped slots 41 in the top surface of mounting plate 38, and are ush therewith.

t The rear gun sight is shown at 9, Fig. 1.

Having described my invention, reference should now be had to the following claim.

I claim:

In combination with a gun having a barrel, an elongated mounting plate of non-magnetic material with an elongated groove in its undersurface cooperatively receiving said barrel and secured thereto, a telescopic sight, a pair of spaced mounting means of magnetic metal secured to the sight, depending therefrom and having flat undersurface portions, spacedj pairs of parallel spaced bar magnets nested ush within v,the upper surface of said' plate, there being longitudinally spaced slots of predetermined shape formed in the upper surface of said plate between said pairs of magnets, said slots including top portions of cylindrical shape and bottom portions of frusto-conical shape, lugs of'non-magne'tic material of the same shape as said slots, secured to and depending upon the undersurface of said mounting means cooperatively nested in said slots, said undersurface portions of said mounting means cooperatively bearing against the mounting plate and bengi'retaningly engaged lloyfup'per surface portions of said magnets.

References Cited in the ile. of thispatent UNITED STATES PA'rENrs- 2,306,972 Meisel 'Dec.'29, 1942 2,510,634 Hull June 6, 1950 2,535,791 Fluke Dec. 26, 1950 2,580,246 Schall ..-1..... Dec. 25. 1951

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