Патент USA US2405414код для вставки
Aug. 6, y1946. i 2,405,414 c. L. EKsERGlAN RECOILLESS GUN MEGHANISM Fil'ed April 5, 1944 A „5,1 A% INVENTOR. . l Carolus LE?îSergL'an/ , BY Ü? '7l/f1# .H TTOENEYV 2,405,414 Patented Aug. 6, 1946 UNI-'reo fs'rA'rss Plßfrsu'rv OFFICE nEooILLEss GUN MncnANIsM ' "(iaro‘lusL; Ekser’giamDetroit, Mich., assigner, by - I‘mesne assignments, to United States of Amer ica 1 - ’ 42Ciaims. (CLSB-»1) y l 2 , ‘I_v‘his‘` invention relatesv to guns, cannons and ' ` the spider element I0, supports the explosive the' like, more particularly to those of the recoil less type wherein a plurality of vanes are dis posed irf a gas discharge passage for ‘counteract ' ing the tendency toward rotation of the’gun cident lto rifiing of the gun barrel. ,_ The primary object of vthe present invention is the provision in a gas discharge chamber of a recoilless gun or the like of an improved vane arrangement of simplified construction and charge 23, the pressure developed from the firing of the `same projecting the shell or projectile (not shown) from the gun'barreliì. The charge 23 is of annular formation and is inserted through the'muzzle end of the gun barrel and slid over the tubular element I4, the rounded head of the screw Il facilitating the disposition of the charge 23 on the tubular element Iß. ‘A’ñash charge `(not shown) is carried Vin the economical manufacture and easy assembly. With the above and other objects in view which will >be apparent from the following de chamber- I9 of «the screw I8 and is electrically ignited by ignition wires (not shown) extending through the apertures 20. The ñash or name resulting from ignition of the ñash charge travels Referring to the drawing‘,`the recoilless’mech against the side lfaces thereof. The vanes Aare of means for mounting the same whichis capable of scription Ito those yskilled in the art to which the 15 through the passageway 2i and thence through cross passages .22 to ignite the propelling charge invention appertains, the present Vinvention -con sists of certain features of construction and com In order to counteract and resist the rotative binations of parts to be hereinafter described effect of the gun barrel, incident to the riñing of with reference to the accompanying drawing, and the gun barrel, >during firing of the projectile, a then claimed. ' ' vaned member `2li is utilized. The varied member In the drawing which illustrates a suitable em 24 embodies a conical hub 25 and a plurality of bodiment of the invention: c vanes 2B extending outwardly therefrom, the ,Figure l is an'end'view ofthe recoilless ,gun plane of each vane being _at an angle to the axis mechanism, and f Y Figure 2 `is a longitudinal section taken ap 25 of the hub 25 whereby the gases exhausting through the Venturi passaage 8 will impinge proximately on line 2--2 of Figure 1. “ i ‘ a gradually increasing depth in the rearward di anism includes an elongated casing ’5 coaxial rection and have substantially the same taper as with andexternally threaded to the rearward end of a gun barrel 6, the internal wall of the 30 the exhaust side of the Venturi passage 8. The hub 25 is provided with a central opening 2'I casing 5 being `contoured to provide a chamber l through which the rearward side of the tubular and an axially opening Venturi passaage 8 hav element I4 extends, and the end of this portion ing a restricted throat 9. of the tubular element I4 is externally threaded Arranged within the chamber ‘I is a spider ele to carry a. nut 28. Upon tightening of the nut ment I0 having a hub Il and radially outwardly 28 against the hub 25 of the vaned member 25, extending legs I2. The ends of the legs I2 are the Vaned member 24 and the spider element lil, engaged with that portion of the inner wall sur by reason of the engagement of the shoulder le face of the casing which tapers inwardly toward therewith, are moved relatively toward each the throat 9. other, thus bringing the ends of the legs I2 into 40 The spider element I0 is formed with an axial abutting engagement with the wall surface of opening I3 which supports a tubular element Iâ, the chamber 'l and the outermost tapered end the tubular element having a shouldered or flange faces of the vanes 26 into engagement with the portion I5 which seats in a counterbore or recess tapered wall of the discharge side of the Venturi I6 at the forward side of the hub II to prevent movement of the tubular element I4 rearwardly 45 passage 8. Tightening of the nut 28 thus pro duces a clamping effect which securely locks the through the opening I3. The tubular element Ill spider element I0 and vaned member 24 in posi is closed at its forward end by a screw I‘I having tion without the necessity of utilizing supple a rounded head, and at its rearward end by a mental securing means, such as for example, bolts cap screw I8 having a chamber I9 therein and a pair of small apertures 20 through its head. For 50 and screws. There is thus provided a novel arrangement Wardly of the spider element I0, the passageway whereby by simply removing the nut 28, the varied 2| which extends from end to end `:if the tubular member 2d, the spider element I0, and the tubu element I4 is provided with cross passages 22. lar element I4 can be easily and quickly removed This forward portion of the tubular element, that is, the portion which extends forwardly of 65 for replacement by new parts of the same or dif y 2,405,414 3 4 ferent design. Another advantageous feature of of said vaned member in clamping yengagement respectively with said stepped portion and taper the construction resides in the fact that securing Vmeans for the spider element, such as bolts and screws are eliminated. ing wall. It is to be understood, however, that such replacement of parts, except for the vaned member, is accomplished when the casing It will5 is beUnthreaded obvious to those from skilled thesgun in barrel the art6.Vthat o_f saidgcasings-deñning,saidachamberfand passage 'fand'.-beingifstepped radiallyfìnwardly ,between said ~ various changes may be made in the detailed construction and arrangement of the parts des. chamber and passage to denne an entrance 4throat of reduced diameter for said passage, the Wall of said passage flaring outwardly toward said other end, a spider within said chamber having a scribed without departing from the spirit and sub stance of the invention, the scope of which is'de-Vv ñned by the appended claims.. » ' „ ‘ A ,A 3. In a recoilless gun mechanism, a tubular cas ing lhaving a pressure chamber at one end and a Y discharge passage at the other end, the inner wall _.:hubmanldV _outwardly extending legs, the outer ends vf; of saidlegs axiallyengaging the stepped portion ‘ What 1. In ais tubular claimedcasing is: having "r a portion if j; lof its l5 of said wall, a vaned member within said dis inner wall surface stepped radiallyinwardly in- _ I termediate its ends to define athr'oat `of reduced" " " charge passage and having spaced vanes periph `e'rally"engagingthe flaring wail of said passage, diameter, and the portion thereof between. .said j throat and one end thereof of gradually increas (and means coacting with said spider and vaned ins diameter, a-_supperiins Spider having, a rod 20 like portion extending coaxially within said por' tion of gradually iriereasias diameter aad leerer? J«ions axially _abutting said, stepped .,Periieri, Yaaed. member .slidably .Suppertee said Iod like portion and `having outwardlym ~extendit’î'ig Yanes, Said Yanes .having radîally-,eutermeei~ e111? faces thereof engaging said wall portion'of grad ually' increasing diameteriandmeaaaiil‘eìag.,Said varied. member and Supporting Snider toward. each other Vinto tightly gripping >‘.l’rictionral engagement respectively with the wall portions engaged there _» ,_ . l Y .. ,Y .. ..‘ i' U. ment respectively With said step” flaring wall.' 25 andthe huieef> Said. `Varied member; ,and means , y Y y . e said wall, a vaned member within said discharge y 35 passage and having a hub por-tion andafplural ity of vanes extending'outwardly> therefrom, Apori tions at least of saidv vanes engaging lsaid flaring 1y extending _1egs,_ saidlegs axially‘engagingfsaid . on saidwspindle` _element forcing said spider'lelè; meat >and varied member toward, eaehfóiher' Íwith‘ the legs of said >spindle elementl andmthefvanes _ discharge passage Hat theY other end, theinrfierY wall of said casing defining said chamberfand passage and being stepped radially 'inwardly-between' said chamber and passage lto define_a'n entrance throat of reduced diameter for saidv passagefthewall of said passage flaring outwardlyr toward vsaid other end,` a spider ywithin said chambery having aîhub and outwardly' `extending legs, the outerA ends of outwardly to define a Venturi passage,l al spider ele; ment having a hub portion and radially outward-_ die. extending eeaxiallv threushaaîd hiíb.. iìeáiiöe ` d y said legs axially engaging'thestepped portion of face gradually decreasing in diameter fromfone stepped. PartienZ a Vahed member Within .Said Yen# turi passage having Aa. hub vand aplurality of vvaries extending outwardly tl'ierefron'i,- _s_aidbvanes taper; in_g , substantially Athe same as and le?gagedfwith thertapering wall of’said Venturi passage, a-is‘pínf ` " t 4. In 'a recoilless gun mechanism = adjacent portion of its length stepped radially " ing having'a pressure chamber ali-,jv _Y 2,. 1n a tubular casing having itsî'inner wall Vsur end for a portion of its length and uthen »forfan member to force the legs of said spider and the vanes of said vaned member into wedging engage 40 wall, a charge supporting spindle extending'còaxL ially through said hub and'said hub portion and projecting beyond said hub portion and having a shoulder portion engaging , said ,spider 'at the side opposite saidl throat, anda nut't'hreaded Yon the projecting end of said spindle in engagement with said hub portion to, in cooperation> with said shoulder Portion, fòrce`_ 'saidfvaned’ member Íand spindle axiallytoward each other ,and Athereby clamp said `vanes` and ‘ legs against the " wall 'por~ tions engagedV thereby. ` ' ' " " ' " YCAROLUSy "_L. “'nKsERGIAiv; Ä"