US1578804A - Air gun - Google Patents

Description

` Mmh ao 1926.l l

' E. P. -CCOK Anz aux 'Filed April 23. 1924 2 Sheets-Shet 2 a, n ewa.

/NYENTOR Inail/gm Patented Mar. 30,1926.

- UNITEDsT-Aiss PATENT. ori-fica.

EDGAR P. cooK,Y or GRANVILLE, ontro.

j Ain GUN.

p Application leid April 23,1824. Serial No.Vj 708,329.

To aZZ whom t may'concern." i 1 Be it known that I, EDGAR'PCooin-a citizen of the vUnited States, and a resident' of'Granville, county of Licking, and State of `Ohio, have invented a new vand useful Improvement in Air Guns, of which the y following is a specification, `the principle of plicants j Patents No. 1,045,373 granted November 26, 1912, and No.. 1,116,675, granted November 10, 1914. However, the

`various features thereof have been improved to insure more efficient operation, as well as lto simplify the construction and increase the safety of handling the device.; Tothe accomplishment of the foregoing and relatedends, saidY invention, then, consists 'of-the 'means hereinafter.v fully described and particularly' pointed out in the claims." y'

Aio

. The-annexed lrawingand! thevfollow-ing Y description set forth inA detailpcertain mechanism embodying the invention, such dis-4 closed means constituting, however, but one of various mechanical forms in which the principle of the invention V may be used.

In said annexed drawing F ig. 1 is a side elevation'of the air gun embodying this invention;`Fig.j2 is a longitudinal section through the air lgun shown inl Fig. 1, showing the working parts on a slightly enlarged scale; Fig. 3 is an enlarged ytransverse"sectional view takenk valong Ithe line 3-3 shown in Fig. 2; Fig. 4 is a perspectiveview showing the movable air chamber used in 'the air gun ;"Fig. 5 isa 'sideelevation of the automaticv hammer-setting and locking slide; iFig. 6y is an end view of the slide showny in Fig. 5; Fig.j7is abottom plan view of the slide shownin Fig. 5; Fig. 3 is a side elevation` of the preferred formv ofv bullet to be used inrthi's' air gun; Fig. 9 is an' Venlarged longitudinal sectional l .view

showing .the -operative1parts ofthe air gunv section adjacent its inner end. i.

with the spring setting mechanism moved to extreme rearward position; Fig. 10 is avview similar to fFig. 9 showing the spring setting vmechanism just prior toits being. inovedto final closed position and with the safety slide f still in position to prevent the accidental release of the'haminer; and Fig. 11 is aview similar to Figs. 91 and 10,;butfshowing'the spring setting mechanisni'fully restored to normalposition with the safety slide drawn forwardly so as not to interfere witlirthe 4 release of the hammer.

Aps is clearly'shown in the'vdrawin'g, ,thev

air gun comprises astock or shoulderportion 1, aA trigger guard-2 projecting from beneath the forward end of the same, a casing 3 mountedupo'n the forward end of the stock, and a barrel 4 lscrew-threadedly engaged inthe forward end of the casing.. Thev barrel is provided `adjacent theirearward end of its bore with an enlarged recess withinwhichthe bullet or other missile may be rseated priorito its discharge. The casing 3 is of substantially' cylindrical cross section except at its rearward lend and it is provided eovv on its vupper side' vadjacent .itsvforward end portion of the' barrel. Within the casing. 3

Vwithan openings throughwhich the bullet V.or missile may-be placed within the recessed an airl chamberpv is adapted' to slide.V Said airjchamber i-s `of. cylindricalfform andv is closed at its iforvs'fa'rd end.` 1 0, Iwhich. is of4 .heavier ,metal 'that the cylindrical portion` .and .is provided'on its vforward face withl a countersunk recess of `a size to' engageover theend oflthe'barrel when 'saidcham'ber is inits forward position. 'Saidbarrel end 'of the air chamber is provided with an. aperture concentricwith .the countersunk portion on its forward face `of the same diameter ask the recessed rportionof the barrel 'and in alignment with-'the bore thereof, said aperture being providedV with4 an enlarged conical plunger 11 `having a cylindrical casing forming the-forward part of va telescopic spring fhousing 32. At the rearwardfend vfofsaid forward portion of the casing' it is provided 'at each vofv its sides withl lugs18 adaptedto 100 As is clearly shown in F'g. 4, the cylinvdrical'portion of the air'chamber is provided with anextension arm 25 at 'its forward -end j and'with'adownwardly projecting lugf 54 'at its rearward eiid for purposes "which will Vpresently appear. l Telescopically Vengaged vwithinthe air chamber ltherey is-provided a its .length .to permit tlie free passage oit' said lugs as the :forwardv section of the. spring casing sli-des bacl and forth. Vlitliin the spring housing a coiled spring' i3 is seated, said :spring being of su'licient length to maintain the plunger 'abutment with the forward end' ol the air chamber when the mechanism ol the air gun is in discharged position.y Y

Immediately beneath thecoi panion .sears 4a releasing .hammer i6 is provided. Said 'i-'eleasing4 hammer is pivoted at its forward end to -the casing and lsnormally held in Contact with the bottoni plate '15 ol' time coinpani'on sears by means of a ooilfed spring 4l pressingazgainstthe under .side thereof vand resting within `a .recess in the casing.. Pivotally mounted on the casmg., immediat-ely behind. the rearward porti-on oi the hammer, a trigger .Q'Qis provided, the lower enzd of :said -trigger'exteirding down within the trigmer guard 2 heretofore referred to. A spring .23, .seated within a recessrprovided the steelt, is adapted to bear against the lrearward liaoeol .said trigger and maintain I the saine normally projected against va 'roasting vadjacent its rearward end.

rscrew-tlneade'd pin 2l :adju-stably mounted wltliin the trigger guard 'and `serving as a Vlimiting 'stop for the trigger. Y

`The mechanism lor setting the .spring and :at-the 'sa-ine time moving the air chamber to Ia rearward position so that the gun maybe easily loaded through the lopening 8 in :torwardnpfper side of t'hzecasing, comprises pair of levers 26, 27. YThe lever ,-27 is 'of U -shaped cross section, 'open :on its upper side, and is pivote-cl at its rearward Iend to a pin 28 mounted on' the under side of the The lever 26 fconiprises a link lpfivotally connected to the lever 27 at 'one end V.and adapted to be received between the sides thereof. Said link, adjacent its .forwand (end, ifs off-set at wa slight upward angle and is pivotally ,con-

neeted with the exten n :arm 25 mounted :on: the liorwaiid end of the air chamber. The .forward end ofthe lever 2f? may be provid-ed a Toughened termi-nal portion Q9 so that :the 'saine emay be easily grasped by the linlgers :of the user of .the grin.

As isclearly shown in Fig. 3 of the fdrawing-the casing i3 lon :its under side isA slotted for the lgreater portion :of its .lengthito receive the automatic setting Vand locking slide '51 .shown in detail in Figs. 5, 6 .and 7. The edges of the slide are preferably provided with grooves adapted to engage with tongues formed on the edges of the slot on the under side of the casing'. The locking slide is provided at its rearward ond with a locking plate 50 of greater thickness than the remaining portion of the slide and throughout its body portion' is providedy with a slot 52, the forward ,end of said slot being closed by a cross bar 53. Nithin the slot the lug 5l vformed kon the cylindrical air chamber 9 is adapted to be received, As will be readilly understood from "9, 1-0` land ll, Jtheco-operation of the th l cned loclring plate 50 of the slide v51' with i the liaininer 16., and idie lng 54 with the ends olf the slot 53 of :the sli-de, bring about the automatic rsetting of the li-ainnaer .md the maintaining ol the saine .in inoperative xpo sition 'du-ring the processof tensioning ithe through' tli-.e spring setting levens. Thus, as more pa'rtioiilarly 'shown in Fig 9, when time spring levers are moved to their rearward limit of inotiontlic forward end :of the air chamber will .be .pressed aga-inst the plungerv and force the saine rearwardly until each ,lug .18 rides over the nose of its soar .la :and 'is locked against forward .motion by passing behind Vthe ,shoulder of the hooked portion lZ of ysaid sears.Y At the saine time the .loclinfg plate of the slide presses .against -tlife upper face :el

the hammer :aridf'orces the rearward zend thereof downwardly until fit engages beneath the nose of the trigger. Ylliro rgh the lost motion connection provided by the :slot the lookingA plate remains abone they body of the hammer untiljtlie levers :reach .a position shown inFrg. l0. Throughout the cntire ran-ge ol motiono Athe levers from the l position sli-owniii Fig. i9 to that Fig. 10,. :the thickened locking platte reina is .above the hammer and yprevents 'accidrelease thereof against ythe 'bottoni plat the companion sears. Thais, while 1the s 2^ ble air chamber is moved rearwardly :togive town in I access to the recess within the rearward end of the barrel, there is no danger oit `:the plunger being accidentally released :and iiijuring .the lingers of .the user yoit the air gun while a bullet -orotlier missile is being Vplaced `witlii-nvthe recessed portion ci." ytheVA tionviagainst the under side of the barrel and casing serves -to :rn-owe the slide ,forward ly and withdraw its locking .plate'sO locking position above the hammer. Thus,

l when the spring setting leverl is' fully restored to its original position the rearward movement of the trigger will release the hammer so that it may strike the bottom plate of the sears and retract the forward hooked portion thereof from engagement with the lugs 18 on the forward sect-ion ofl the spring housing and permit the spring to move the plunger forwardly through the 1. In an article of the character described,l

the combination of a casing a barrel connected with the forward end of said casing, an air chamber slidable longitudinally within said `casing, a spring pressed plunger engagedwithin said air chamber, means associated with said air chamber for moving the saine rearwardly in said casing and `coinpressing the spring abutting said plunger, means for retaining said plunger in its rearward position, and automatic meansfor preventing the-release of said plunger until said air chamber has been rrestored to sub-` stantially its normal position against the n rearward end of said barrel.`

2. In an article of the character described, the combination of a casing,a barrel connected with the forward end of said casing,

' an openingfin the forward end ofl ysaid casing giving access to the rearward'end of Lsaid barrel, an air chamber slidable longitudinally within said casing and kadapted to serve as a closure for said opening, a spring pressed plunger engaged within said air chamber, means. associated with said air chamber for moving the same rearwardly in said casing and compressing the spring position.

abutting said plunger, meansvfor retaining vsaid plunger in 4its rearward position, and

automatic means for preventing the release been restored to substantially itsnormal position with access to the barrel through said opening obstructed by said plunger. l

3. In an article of the character described,

the combination of a casing, `a barrel con-v nected with the forward end of said casing, an air chamber slidable longitudinally with; in said casing,l an extensionv arm projecting forwardly from said air chamber, a spring pressed plunger engaged within said air chamber, toggle' mechanism engaged with `the extension arm on said air chamber for lof, said plunger until said air chamber has moving said'f air-*chamber rearwardly and placing said springunder tension, means for retainingsaid plunger 1n its rearward position, a slidable locking plate on the under Vside of said casing, andmeans associating said air chamber with said locking plate c for automatically preventing the release of restored to substantially its normal position against the rearward end of said barrel.

4. In an article of the character described,

said plunger until said air chamber has been v the combination of a casing, a barrel conl nected with the forward-end of said. casing, t an air chamber slidable longitudinally within said casing, an extension arm projecting forwardly from said air chamber, a spring pressed plunger engaged within,- said air chamber, ltoggle mechanism engaged with the extension armjonsaid air chamber forl moving said air chamber rearwardlyv and placing vsaid spring` under tension, means.

fo'rretaining said plunger init rearward y' L position, a slidable locking plate on-'the under side ofsaid casing, and means associat ving said air chamber with said locking yplate* for automaticallypreventing the release of said plunger until said toggle levers have been restored to substantially their normal Signed by me, 1924.

`this 21st day of April,v

EDGAR P. oooK.

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