US2437744A - Telescope attachment for firearms - Google Patents

Description

arch E6, E948. .1. w. HORVATH TELESCOPE ATTACHMENT FOR FIREARMS Filed OCL. 17, 1944 Ewige/Wm Jpn/7 747. Hawa/7,

.V111 l Il 1 n for. iiringA incident. to. focusing ofv Patented Maro 169 GFF ICE 2,437,144 'IIELESQOBE lATTI?ACHlVIEN'lFOR FIEEARMS ".1 ohn W.-Horvath,.rBronx,fN..X.

Application Butcher. 17,

This v inventionrelates to anewand usetulimprovementin .telescopic-sightsfior 'rearms such .asrifles, cannons, mortarsfjetc.

.Theprincipal object ofthe presentjnvention is to provide a `telescopic attachment for sighting rifles and otherrearms wherein mechanismfis provided for automatically. setting the elevation theattachment on a target. y

AnotherA important vobject of the .invention is to provide an instrument of the character stated mwhich is .positive acting,l fool-prooi` .andnot susceptible to the readydeveloprnent of defects.

Other objects ,and .advantagesof Vtheinvention shallbecome apparent to .the reader; from .thefol- .lowing description.

In'the drawings:

Figure lis a longitudinal.verticalsectionalrview through the attachment;

Figure 2 is a crosssection Aon lirici-f2. oLFigurel;

Figure. 3 isa cross-.section ,on line `3-e3.of. Fig- Aure l;

, Referring -to the drawings .wherein ,like .numerals designatelike parts-it can beseenthatthe numeral denotes thebreech lportionofior instance .a rifle upon-which thepresent invention generally referred toby numeral Bismounte'd.

.The attachment 6 consists of a baseLbar .1.,fixed to `the barrel 5 and .extending longitudinally thereof.

The .base bar .1 has al longitudinally. .extending dove tailed ,shaped rack along which .anelongated housing 9 is slidable and this housing having its bottomcportion formed with a "dove tailed groove I in which the dove tailed rack 8 is located. Obviously'thehousing 9 is slidable on therack 8 .and has a shaft I I ,journaled therethrough and carrying a gearl2 meshingiwith the rack 8. One end of the shaft "H vprcbtrudesbayond onez'sidegofthezhonsing' Szandfhas a knul-led hand knob I3.

Also iournaled through'thev housing 9..s asha'ft kI4 carrying Ia'worrn I5meshing Withra dove tailed slide, I 6 depending from a transverselymovable carriage t1,'this'dove tailed slide I'being slidable in a dove tailed slot I8 in the top of the housing Il. The carriage I1 carries a bifurcated riser I8.

Swiveled on the rear end of the base bar 1 for horizontal rotation about a vertical axis is a box I9 having vertical slots 20 in the opposite side walls thereof and through which the end por- Vtions'of Aa-shaft 2I fprojects. -The outer'endsi the shaft 2I are equippedwith a-knurled`hand wheel'-22,-22. "Toothedsracks 23, 23 project in- 'Wardlyfromthe-rearwall'of the box I9 andwith ye thesaaipairofgears 124,124 uorifthe shaft 2 I mesh.

fApivotpin; 1extends through thebottom of theboxi IS and1`s1sorewed-into the base bar 1, thus-swivellygsecur githe'box i9 to the rear-end ofthe basebar.

-`The telescope Asighting Adevice consists I of an Melo14gate'd-tizbeL26*having -a sun Y'visor 21 at its forward eridfthisvisor 21 serving'to Ahold an obyiective lens'ZSnlrrthisy end ofthe tube v2li and preventing objectionableglare from Vsunlight Aupon thelensinnse.

;A;drawtube--29^.isfslidablein the tube 26 yand at ,itsxrear `end aneyepiece 30-is;providedin which an ocular' lenslis' provided. This construction is .conventional and'it is'tobe understood that crosshairor some `other sighting media is located inthistelescope device-'as inthe manner of conventional telescope. attachment'for ries. vIn this connection; it -is 'noted"that,-in accordance kwith the controlling and operating elements shown,

y"25 "the particular optical elements" Within' the tele- 'scopic tubes-261mm l29 are uoi such-conventional kind'andiarrangement'whereby `it is necessary to :move'the-tube'ZS:outwardlydnthe tube 25 for "focusing'the sight von -more 'distant objects.

A1 bar 32fexterrds longitudinally under the tube 26-an`d1has-aninternally threaded collar 33 at its rear-endintUWhiCh'the'rear -end of the tube 2B "is screwed. 'The'bar-32 "hasta longitudinal slot "34therein'and'throughlthe forward end of the -dslot 34 a-pin"-35`isdisposedthis pin-'having its ends*terminatingv in the*y bifurcations on the carrier'fH.

The-opposite lside 'portions ofthe box I9 also 'rharvefvertical slots'f therein for receiving a hori- V"-4.0 aontalrodl-"whichlhas itsf'er-ids terminating in a vpa-ir'ofearrns =38j38t`vhich project rearwardly from fthecollarBS ern-the bai-332.

:A tensionf'spring -Slexterids 'downwardly "from fthe "rods-'31 and connects to `-an anchor element fon'the'innensideofthelfront-wall ofthe box I.

' The-shaft? I inthe-'box I 9; carries '-a large gear wheel 240' which -i'neshes with longitudinally spaced rack teeth 4I on the bottom of the 'drawtube 29.

In the operation of the attachment, it can be seen that by actuating the worm I5 (see Figure 1) by means of a hand knob 42, the forward end of the tube 2B is moved horizontally and laterally and the swivel box I9 will turn accordingly, this 55 to take care of windage. When adjustment for ing provision and the gun windage has been satisfied, the knob or knobs 22 can be rotated to train the telescopio device on the target and when perfect focus has been reached the mechanism has been accordingly set as far as sighting is concerned for the proper elevation at which to fire. It will be observed that this has been accomplished automatically.

In some cases, after the proper focusing adjustments of the telescopic sighting provision have been made and also the aforesaid automatic angular adjustment is effected between the sightbarrel, if some additional change in such angular relationI of the parts is found necessary or desirable, the-knob I3 can be turned in either direction and the housing 9 accordingly moved longitudinally of the base member on the gun barrel 5, and this movement of the housing 9 together with the crosspin 35 in the slot 34 causes a raising or lowering of the forward end portion of the sighting provision without aifecting the previously set focused adjustment of the same.

The telescope is preferably ol' the convenventional type and may contain 3 or 4 lenses to make it sensitive to distance and this multiple arrangement of lenses of course neutralizes the difference in eyesight between different individuals. So, too, it is obvious that the optical provisions within the tubes 26 and 29 may be such that the tube 29 must be moved inwardlyv in the tube 26 for focusing upon more .distant objects (just the reverse from the adjustment hereinabove described) and in which case, of course, the racks 23 are then to be positioned vertically in the housing I9 at the side of the gear 24 opposite to that shown in Figure 1 of the drawings.

While the foregoing description sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:

1. In combination with a firearm, a telescope having sighting means therein, said telescope having a forward tube and a. draw tube slidable longitudinally in the rear portion of the forward tube, the said parts, as assembled, being mounted for both vertically and horizontally swingable forward end poring the telescope to the proper angular relation on the firearm, means for moving the draw tube longitudinally inwardly and outwardly of the forward tube, said last-mentioned means comprising a longitudinal rack on the draw tube, a gear meshing with the rack, manual means for rotating the gear to move the draw tube in and out of the forward tube with cooperative provision for simultaneously raising and lowering said gear during its rotation in either` direction to thereby change the angular relation of the telescope on the firearm during inward and outward longitudinal movement of the drawtube in said forward tube.

2. The structural set forth in claim 1,

drawtube inwardly and outwardly in the forward tube and simultaneously tilting the device to the proper angular relation on the firearm, said means comprising a longitudinal rack on the under side of the drawtube, a housing supported swivelly about a vertical axis on the rearm and having the rear end portion of the forward telescope tube attached thereto without independent longitudinal movement but with freedom of upand-down movement independently of said housing, resilient means normally urging said forward tube downwardly, a gear mounted within said housing and guided for up-and-down movement in the housing, said gear meshing with the rack on said drawtube, manual means for rotating the gear to move the drawtube inwardly and outwardly of the forward tube, a vertical rack supported within said housing, said gear being provided with a floating shaft and a pinion on the shaft meshing with the vertical rack, a longitudinally movable support on the firearm for the forward end portion of said forward tube, a manually manipulable rack and pinion provision for selectively moving said support forwardly and rearwardly on the firearm, and a manually manipulable supplemental member on said support, said supplemental member having a slotand-pin pivotal connection with the forward end portion of said forward tube.

4. The structural attachment for a firearm as set forth in claim 3, wherein the means for moving the movable support for the forward end portion of the forward tube of the telescope comprises an elongated longitudinal arm and a pinion mounted rotatably in the support and meshing with said rack, and the slotand-pin connection between the forward tube of the telescope and the supplemental member on said support comprises an elongated slotted longitudinal flange on the bottom of said forward tube and the cooperative pin in such connection extends transversely across 4a bifurcated portion of said supplemental member and between which the flange on the forward tube is cooperatively disposed.

JOHN W. HORVATH.

REFERENCES CITED The following references are of record in the file of this patent: Y

UNITED STATES PATENTS rack on the nre-

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