US843573A - Air-gun. - Google Patents

Description

PATENTED FEB. 12, 1907. RLF.

A. L. BLOMN E P. s. EWE

AIRGUN.

APPLIoATloN FILED SEPT. 1, 1905.

(auf v Inventar;

Wam/L 1MM W?,

UNITED STATES PATENT UhhlUJJ.

AXEL LIN US llllvlflih, F SUNDBYBERG, AND PER SAMUEL EWERLF, Ol.-`

STOCKHOLM, SWEDEN.

AlRwGUN.

Speeicaton of Letters Patent.

Patented Feb. 12, 1907.

Be .it known limi we, Arun. LINUS BLUMN and llm SAMUEL lwmnifm', subjects of the King ol Sweden, und resident s of' Sunfilrylwrg, Sweden, end Stockholm, Sweden, respectively, here invented new :1nd useful inlproveinens in fliieGnns, ol which the followingr :i specified ion, i'el'ljrence being hud to the drrnvini; iirwinpnnying :ind forming n. port hereof.

The present invention relates to ,irnplfweu ments in suoli oir-guns that :1re proi'ided with :n1 air-receptnele, :in air-pump, und a vulve comroilwd ly the trigger :rnd adapted to open ai imssatf betueen seid 'Y ervoir Vfor the nir and the borrel when the shot is to be discharged.

The e'ilijeet of the invention is to malte o# feetuel use of the expansion of the vom pressed nir in suela guns, which necessitnies opening (he said voire so rapidly es possible und that it should always shut perfeoily close against its seat.

T he invention eons'ists, briefly, in that the seid Avalve is yivldil'lgly connected with o sleeve or other body of en),44 suitable form adapted to engage the puwi noted uponbv the trigger, so es to eiieet :i ceriiiiili lension between the volvo sind the sleeve when The lutter engages: iin: paul, whit-h tension will Dress the valve 1ownril the sont. 'lhe i-i'lre of this will be that thovnlw, which is sete-d u )on7 us'usuzxl, by e wing, springs, or the li e, tending to el ille volw, zo first re mains pressed against the sont e. moment after roles-sing the puwl, notwithstio'iding that the vulve-springs have already begun to expend, and is then pulled very rapidly from its sent, so that the nir eonined in the reoepisole will give the projectile inserted in the rear of the borrel n strong blow. Bj this errangement we further gain the ee'lvontege that the pressure in. the airfeceptuole osnniit be raised above n eertsin limit, sini'fe the vulve muy be adjusted to yield at s certain pressure, und thus works as a Safety-'miro In the accompanying drawing we have shown one form of our invention.

The figure represents a side View, partly in section, of the oir-gun.

Beneath the rear of the barrel 1 an air-res eroiri! is applied, as usuel, and to the front end of the same is fixed an airpu1n 3, by means of which air can be compresseclgn the reservoir 2. rather large opening 4, the edge of which forms the seat 5 for a valve 6, adapted to close seid opening. The stein 7 of the valve is guided in a casing 8.'. Onto the rear part of the valve-stem 1s passed a sleeve 9 or the like adapted to reciprocate on the stem. The head of fi serefw'lQ' or the like passing through o hole in the bottom of the sleeve and screwed into the stem acts as a stop for The rearward movement of the sleeve rele.- tively to the siem. ift spring 11 or springs or other elestie body or bodies laced within the sleeve and pressing; on the rear end of the stein and on the inside of the bottom of the sleeve tends to keep the sleeve pressed against the heard of the screw. The sleeve ms a. shoulder 12, adapted to engage the pewl 14. A spring 13 tends to keep the pawl engaged with said shoulder until released by the trigger 15. Within the oosingis another spring 16, (or springs or other elaste body or v bodies,) which presses against the frontedge of the sleeve 9 und against a shoulder in the casing 8, thus tending to Jnove the sleeve rearward or when the latter engages the head of the screw to open the valve.

The shoulder i the sleeve has such a position that the valve must be shut and the three siu'ings 11 13 16 compressed ere the pew-l min engage the shoulner, the object of the piiwl being to keep the valve shut when zur is pumped into the reservoir 2 and until the shot is to be discharged. AS the valve v: h en closed is subjected to a. pressure in a di reetion. toward the seat', it will shut close even when thepaeking has set and the pawl 14 and shoulder'12 have been worn. r

For facilitating the shutting of the *valve a esp 1E" is screwed on the rea-r end of the sleeve, end e spese is left between the bottom of the seid mp andthe head of the screw 10 sufficient for the play of the sleeve on the valve-stem. Yinsiemi of this oep other suitable means may be used. The chamber 2G, formed between the opening 4 and the valve 6 when the lutti r is open, communicates with the barrel 1 hy means of a breech-piece 18, suitably mounted close behind the rear of the barrel and having s. passage 19, which connecte the chamber 2() with the borrel 1 when the uw breech-piece is closed. The breeel'i-v iece is turneble to the side for allowing of t e projectile being inserted.

The rear end 0f the latter has a The air-gun described is usedand works in the following manner: The valve 6 is shut by pressing the eap '17 forward untilthe pawl 14 engages the shoulder 12. This `being done airis 4pumped into the reservoir? and a. projectile-'for instance an arrow-is insertedm the rear of the barrel whereupon the breechiece is turned to the position shown in the rawing. Then the shot can be discharged. The maximum of pressure obtainable in .the reservoir 2 is obviously de endent of the tension of thespring 11, and t e valve 6 thus acts as a safety-valve, making a .bursting of the air-reservoir quite imposslble and having besides the eiiect that the pressure in the airreservoir will beexactly the same for every shot, which is, as well known,.a considerable advantage in gun practice. When the trigger 15is moved backward by the finger, the Vpawl 14 is lreleased from the shoulder .12, and the spring 16 immediately begins to expand. The valve 6 does,.however, not leave its seat at once, because the s ring 11 also expands; but thereafter the vallve 1s extremely suddenly pulled away from its seat, whereupon the air rushes out through the passage 19 and darts the projectile.

Ahe arrangements shown in the drawing ma ofcourse be modiiied with regard to detai s without departin from the idea of this invention. So ma r instance, the sleeve l` 9 have any suitab e form, .the only re nirement being that it is movable relative y to the valve 6 and yieldingly connecte-d to it. The guide for the valve may have any suitable form. The trigger device may be of any suitable construction, and so on.

Having now described our invention, what We claim as new, and desire to secure by Let-j ters Patent, is

1. The combination with an airm havan air-reservoir, an air-pump an a valve acted upon by a trigger device and pawl and Aing an air-reservoir, an air-pump and a valve acted upon by a trigger device and adapted "to close and open a passage between the reservoir and the barrel, of a sleeve passed on the rear end of the valve-stern, a spring inserted between the valve-stem and the bottom of the sleeve, and a screw fastened in the stemand passing through a hole in the bottom .of the sleeve, so that the backward .movement ofthe sleeve relatively to the stem is stopped b the head of the screw, substantially asset orth. l

3. The combinatlon with an air-gun, having an air-reservoir, an air-pump, and a valve controlling the communication between the reservoir and the barrel, of a sleeve passed on the valve-stem, a spring adapted to move the sleeve rearward on the stem, a stop conneeted to the stem and adapted to limit the y backward movement ofthe sleeve on the stem, another spring adapted to open the valve by pressing on the front ed le of the sleeve, a shoulder on the sleeve a apted to engage a pawl engaged by the trig er, and a cap screwed on the rear end of the gleeve and leaving a space between its bottom and the said stop so as not to interfere with the movements of the sleeve relatively to the stem, substantiall as set forth.

In testimony w ereofl we have signed our names to this specification in the presence of two'subscribin witnesses.

lEL LINUSBLOMN. 'PER SAMUEL EWERLF. Witnesses:

EWALD DELMAR, Klaar. Ennesimo.

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