US631399A - Supplemental barrel for guns. - Google Patents

Description

Patented Aug. 22, I899.

Nu. 63l,399

n. B. GILLETTE.

SUPPLEMENTAL BARREL FOR GUNS;

(A nmm fllgd Ian. at, was.

(No Model.)

avvvemlioz li rwmB. Gillette.

Rel/us Pulls mm wAsnmUnN a c thereof too high to make it suitable for shoothill-TE,

STATES" ATQE T; Fries,

SUPPLEMENTAL BARREL oe eons.

SPECIFIGAIIICN ionising part of Letters Eatent No. 631,399, dated- August 22, 1899.

Application filed January 3 1, 1898. Serial No. 668,810. lilo model.)

,To. all z'phom it-mriy concern/1 Be it known that I, Emmi B. GILLETTE, .a' oitigen of the United States, residing at Rosenurg, in'the county of Douglas and State of Oregon, have invented certain new and useiul Improvements in Firearms; and I do herebydeclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled'in theartto-which it appertains to makeand-use the same.

My invention relates to 'impro'venients in that class of firearms which are technically known 'as br och-loading small-arms, and more particularly to the subclass of rifles.

The object of my invention is to provide an attachment for such aweaponwhereby it may The desirability'of such an attachment will be at once apparent, and numerous efforts have been made and devices proposed for ac complishing the object of this inventionthat is, manufacturers and users of guns and rifles have long seen the desirability of providing means whereby, for example, a sportsman could readily adapt a gun of large caliberfor the recepiion'cf small light-charge cartridges. 4

It frequently happens that the charge or cartridge required bythe'size of the chamber at the breech elf-the gun-barrel is so heavy and expensive as to render the weapon useless for the purpose for which it is desired to use the same. Thus the charge or cartridge required to be used with a thirty-two to forty caliber rifle, for example, is too heavy and the cost ing small game or gallery-target practice. Various devices have, as above stated, been proposed for attachment to such a gun as will adapt it to receive and use cartridges or charges much smaller than those normally employed; but to all of these that are known to me certain'objections have been incident, t overcome which is the object of my present invention,

The invention consists in the peculiar con- 1 structionand arrangement of parts that will be hereinafter fully, pointed out.

In the accompanying drawings I have illustrated'an embodiment of my invention, in which- I Figure l is a "view,'par,tly in section, ofa breech-loading" gun having my improvements applied thereto. Fig.. 2 is a detail view of the supplemental tube orauxiliary barrel-or chamber detached from the gun. Fig; 3 is a similar View of aslightly-modified form. Fig. 4 is a detail perspective view of a portion of the gun-barrel, showingthe means for detacln ing the said auxiliarytube from the gun. Fig. 5 is-a similar view showing a modification of'the parts'showniu Fig. 4, Fig. 6 is a longitudinal sectional view through the aux: iliary tube or chamber shown in Fig. 2,a cartridge beiug'represented in position for use parts ofthe aux iliar tube-extracting mechanism.

. 7 therein. Fig; 7 illustrates the members or Like letters andnunierals of reference denote corresponding parts in the several figures of the drawings, referring to which- A designates a tube or, as it may be termed, chamber which is adapted to be inserted in thecartridge bed or chamber formed at the breech end of the gun-barrel. This cartridge bed or chamber is somewhat larger in diameter than the bore of the barrel to accommodate the shell or casing oi: the cartridge, the ball of which projects forwardly from the said bed into and is of the same caliber as the barrel. I

The embodiment of my invention herein illustrated is particularly adapted for use in guns of that style in which the cartridge is of longitudinally-tapcriug form,- and therefore the bed or chamber provided for its reception at the breech of the barrel increases indiaineter from its forward end rearwardly.

This gives to the tube A, which is made of such shape and exterior dimensions as to fit snugly in the said cartridge-bed, a frustoconical form. It is made of auysuitable ma too 2 ee1,see

spending in size to and adapted to fit within the seat provided at the breech end of the cartridge-bed for the reception of the rim tained in the tube A until that was withdrawn from the gun or said shell could be dislodged by means, such as cleaning-rod, not specially designed for that purpose.

The here or passage in the tube A is no of uniform size or diameter throughout its length, as is clearly shown in Figs. 1 and 6. At its forward end it is of the same size as the bore of the gun-barrel, the said end of the tube being at that end of the thickness of the walls of the shell or casing of the cartridge commonly used in the gun at the same point, and said bore in the auxiliary tube is of this same size for a considerable portion of its length-namely, from said front end rearwardly to the line a; w in Fig. 6. From this point to its rear end it isshaped to provide a bed or chamber .for the reduced charge or cartridge B. This cartridge, it will be noticed, is similar in form to that ordinarily employed, the only diiference between it and the one which would lit the cartridge-bed of the gun being its length, and consequently its width at its rear end. A suitable countersunk seat a is formed at the breech end of the tube A to receive the flange or rim b at the end of the cartridge B, so that when the tube A and cartridge B are in position for, use the center of the rear end of said cartridge occupies the same position as does the center of the corresponoing end of the cartridge specially designed for the gun.

Owing to the peculiar form of the bore or passage in the auxiliary tube and the exterior tapering shape thereof it will be seen that the walls of the said "tube increase in thickness from the forward end to the breech end. My invention, as aforesaid, also includes means mountedon the fghn Wherebythe'said auxiliary tube-or reducing-chamber can be easily withdrawn from the breech. of the barrel when the occasion for its use has passed and it is desired to restore the gun to its normal or original condition. In the embodiment of the invention herein illustrated these consist of devices such as are shown in Figs. 4:, 5, and 7 of the drawings.-

'Referring particularly to Figs. at and 7, C designates the gun-barrel, which is shown as being of octagonal form in cross-section. D designates the breech end of such barrel, and the aforesaid auxiliary tube A is shown in position therein. In a longitudinal groove formed in the barrel (3 and opening through the breech end thereof is arranged an arm or bar 1, which is capable of a limited longitudinal movement in said groove or way. At its rear end it is provided with :1. depending lug 2, the lower free end of which is reduced, asat 3. This lug occupies normally a position in front of but in line with the above-described annular rim or flange at the breech end of the tube A, and when said bar or rod 1 is moved rear; wardly said lug acts to force the tube A from the cartridge bed or chamber of the gun. Such longitudinal movement of the bar 1 maybeaccomplished by various means. In the embodiment of the invention illustrated in Figs. 4 and 7 such movement is efiected by means of a lever 4, which is fulcrumed on the barrel 0 and normally lies close against the same throughout its length. On the under side of said lever 4 concentric with its fulcrum are formed a series of teeth, which mesh with a rack-like portion of the bar or arm 1, so that when the longer arm of the lever 4; is raised said but will be moved toward the breech oi the gun and the auxiliary tube A ejected therefrom.

If desired, a ring or band, such as shown in Fig. 5 encircling or surrounding the barrel 0, may be employed for moving the ejectorbar 1 instead of the lever 4.

The bore of the auxiliary tube in advance of its cartridge bed or chamber maybe either smooth or rifled, as desired. As pointed out,

this portion of said tube forms a continuation of the gun-barrel, and therefore, if rifled, the riding will he made to conform to that of the barrel with which'it is to be employed.

The manner of using my improvements will, itis believed, he clearly understood from the foregoing description and the drawings.

It will be noticed that I provide means permanently mounted on the gun for ejecting or removing the auxiliary tube, thus avoiding the necessity for using special tools, such as wrenches, for that purpose or forcing the tube out by means of a rod inserted through the muzzle oi the barrel, which proceeding is liable to damage both the auxiliary tube and the riding of the gun-barrel.

As before stated,- myimprovements are particularly adapted for use with rifles; but, as will be apparent, many of the features will be of use and can be applied to smooth-bore guns.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1.' The combination with a'breech-loading firearm, of a tubular receiver adapted to be dinally-movable arm mounted on the gunbarrel'and adapted to engage with said receiver, and means for moving said arm to cause it to force the said. receiver from the 5 gun, substantially as set forth.

3. The com bination of a gun or firearm and a short or auxiliary chamber havinga notched and countersunk flange or rim on its rear end and a retractor or ejector for the auxiliary- 1o chamber comprising a sliding arm with an angular rear end and a lug thereon, and at lever on the exterior surface of the gnu-barrel for operating the sliding arm, substantially as described.

In testimony whereof I affix my signature :5 in presence of two witnesses. HIRAM B. GILLETTE. [L. s.]

Witnesses:

E. D. STRATFORD, SIMON Cum).

It is. hereby certified that in Letters Patent No. 631,399, granted August 22, 1899,

upon the application of Hiram B. Gillette, of Roseburg, Oregon, for an improvement in Supplemental Barrels for. Guns, an error appears in the printed specification requiring correction, as follows: In line 18, page 1, the word light should read large;

and that the said Letters Patent should be read with this correction therein that.

the samemay confiorm to the record of the case in the Patent Oflice.

Signed, countersigned, and sealed this 5th day of December, A. 1)., 1899.

[sEAL.] WEBSTER DAVIS, Assistant Secretary of the Interior. Counters'igned:

C. H. DUELL,

- Commissioner of Patents.

Correction in Letters )Paterit No. 631

It is, hereby certified that in Letters Patent No. 631,399, granted August 22, 1899,

upon the application of Hiram B. Gillette, of Roseburg, Oregon, for an improvement ii1 Supplemental Barrels for. Guns, an error appears in the printed specification requiring correction, as follows: In line 18, page 1, the word light should read-large;

and that the said Letters Patent should be read with this correction therein that.

a the wan a a eonform to the record of the case in the Pater lt Oflice.

Signed, oountersigned; and sealed this 5th day of I )ecember, A. 1)., 1899.

[an-m] WEBSTER DAVIS, Assistant Seeretary of the Interior. Oounters'igned:

0. H. DUELL,

- Commissioner of Patents.

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