US688462A - Gun-barrel. - Google Patents

Description

No. 688,462 Patented Dec. I0, i90l.

T. A. HDJELAND.

GUN BARREL.

(Application filed Apr. 19, 1901.] (lo Ilodol.)

"ET. I I

1660 we ey U TED STATES PATE T OFFICE.

. TERJF. AANENSEN FID EI 'AND, OF FOS'IVEDT, IVELAND, PR. CHRISTIAN- SAND, NORWAY.

G UN-BAR R EL.

QSPECIFIGATION forming part Of Letters Patent Nb; 688,462, dated. December 10, I901.

Application illed April 19, 1901- Serlal No. 56,628. (:No model.) t I I To all whom it may concern.-'-

Be it known that I, TERJE AANENSEN FIDJE- LAND, a subject of the King of. Sweden and Norway, residing at Fostvedt, Ivcland, pr.

Christiansand, Norway, have made certain 'new and useful Improvements in Quick-Firing Rifles, of which the following is a specification. 7 v a In the modernmagazine-rifle .the barrel, as is known, under quick fire will soon become "so hot that it is impossible for the soldier to hold the rifle.

To avoid this disadvantage, thefore-stock of the rifle has been made in such manner that it entirely covers the barrel of the rifle. The wood of which the stock of the rifle is made is'a poor conductor ofheat, and therefore it takes time before the heat is transmitted through this material. Never-v theless, experience has shown that under a quick or a prolonged fire even the wood becomes at length so hot that it greatly inconveniences the soldier. Besides, another great disadvantage results from the covering of the barrel with the stocknamely, that the stock when it is again exposed after the firing tothe usual temperature and, as often happens,

also to dampness is liable to be warped very considerably, and this warping of the stock, whlch is fixed to the barrel, has often had fatal influence on the barrel, causing this to warp also, and the rifle has become therefore more or less unreliable or even at times entirely fss useless. I am therefore of the opinion that 1t a-qulte unsuitable method to surround the barrel wlth a non-conducting material,

whereby the unavoidably-developed heat is consequently preserved and prevented from escaping until at length it asserts itself so much more at a certain point, with the abovementioned disadvantages. This present arrangement has for its object bythe most prac- 'tical and simple method to let the heat which that'holds the rifle.

.has been developed in the barrel escape into the surrounding airas quickly as possibleand so that at the same time this radiation of heat will have no disagreeable effect upon the hand The invention is represented on the accompanymg drawings, inwhich- Figure 1 shows apart of a rifle-barrel with" the stock inside elevation; Fig. 2, the same, also seen in side elevati0n, but with the stock in section; Fig. 3, a section on the line VII VII,

which incloses the barrel hemicylindrically,

as will be seen from Figs. 3 and 4, by means of which there is formed an air-space between the barrel B and the cap, which air-space is proportionally larger at the hindpart of the I I cap than at the fore part, corresponding to the taperof the barrel. (See Figs. 2 3, and 4.) This cap 100'has on both sides a row of borings or holes 101, and it will be seen that the radiant heat from the barrel will first be met by an insulating stratum of air; but by the constant natural circulation through the openings 101 the heat developed is carried 0&-

as quickly as it is developed, and the cap which incloses the barrel when it is fixed at the calculated right distance from the barrelwill never become so hot that the rifle cannot beheld. v I

As shown in Fig. 2 especially, thepresent arrangement is also characterized thereby that the rifle-barrel B does-not rest, as otherwise is the case, throughout its whole length 0n the wooden stock; but this latter is so cut barrel in its more essential part isseparated from the rifle-stock by the insulating airspace 102 and that it is only in contact with the stock on the rests 103 in such a manner that the evolved heat can escape through the holes of the cap 101. (See Fig. 4.) Even if, therefore, the stock should warp or deform, which by the present arrangement is far less likely thanheretofore, thiswill naturally not be ofjsuch a great effect on the barrel as when the latter throughout its whole length lies against the stock.

I Iaving now described my invention, what ree out that there are formed long recesses or 1 2 ess,4e2 I claim as new", and desire to secure by Letters In witness whereof I have hereunto set my Patent, ishand in presence of two witnesses.

In a rifle the combination with the barrel of TERJE AA-NENSEN FIDJELAND a fore-stock havlng elongated recesses where- 5 by the barrel is supported at a few points of WVitnesses:

limited contact bysaid fore-stock, substan- AXEL LAKE-,- tially as described. RICHARD STOKKE'.

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