US292065A - Canister-shot - Google Patents

Description

A. G. SINCLAIR.

GANISTER SHOT.

Patented Jan. l5, 1884.

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` Nr'rnn STATES PATENT trice.

ALLEN G. SINCLAIR, OF BROOKLYN, NEXV YORK.

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SPECIFICATION forming part of Letters Patent-No. 292,065, dated January 15, 184.

Application filed December 1, 1879.

To @ZZ whom it may concern: 1

Be it known that I, ALLEN G. SINCLAIR, .of the city of Brooklyn, in the county of Kings, State of New York, have invented cert-ain new and useful Improvements in Cauister-Shot; and I do hereby declare. that the following specification, when taken in connection with the accompanying drawings, is such a full, clear, and exact description as will enable others skilled in the art to make and use the same. V Y Y Myinvention relates to the construction of canister-shot for ordnance; and it consists in the use, in the construction with the usual small balls employed in this class of ammunition, of a holder for the reception of the balls, constructed of a spirallywrapped 'wroughtiron or other metallic wire, (differing in diameter according to caliben) the whole being incased in an ordinary outside cylindrical tin case, said parts being assembled by mechanical means and secured by bottom and top metallic caps, held in place by 'bending over and properly compressing the ends ot' the outside inclosing-case, so as to form retaining-flanges.

The action of canister-shot when discharged is as follows: Vhen ordinary canister is flred, the tendency ofthe bullets is to rapidly separate, and as the restraining elements in ordinary canister are not sutlicient to control this tendency to separate, a wide dispersiop near the muzzle of the gun follows, and in consequence a loss of useful effect at ranges, say, upto three hundred yards results. The spiral wire holder operates to retard t-helateral dispersion of the bullets, for the reason that it gradually elongates under the tendency of the bullets to diverge rapidly from the line of tire, and thus has its spirals gradually spread apart suicientl y to admit the passage of the balls held within it, and thereby causing the gradual dispersion of the balls, and hence secures at ordinary eanister-ranges the 1naximuni effect of this class of projectile, say up to three hundred yards. Other devices to obtain the same end are in vogue; but this one secures all the advantages of restraint in a greater degree, and is more economical in its construction.

Figure 1 is a sectional elevation of the empty Fig. 2 shows the ease in section and of wrought-iron or other suitable metal, of

such shape as is best adapted to support the balls 1 and be secured in place by the case 3. The ease 3 is composed of sheet-tin or similar plate metal lap -joined or otherwise secured in circular form. The holder 5 is formed of wire, preferably soft wrought-iron wire, which is .coiled into .spiral Yform by any common means and of a diameter to suit the case 3 and its base 2 and head 4. It is preferable that the Spiral coils of the holder shall be so wrapped as to bring their surfaces in immediate contact; but a slight space may be left between them. The case 3 may be omitted when some wire of proper gage isused for the holder; but that omission necessitates the adoption of expensive means for connecting the head 4 and base 2 to said holder.

The mode of assembling is as follows: The case 3 is first made in the ordinary manner and of the desired dimensions. The spirallywound wire holder, of proper diameter, is then inserted within the case 3, so as to rest upon the base 2, which is placed within the case 3, so that the hanged lower end, G, ofthe case is lapped over the said base 2. The balls are next inserted in the case, and the head 4 is placed within the case and its upper edges are turned over the edge of the head 4, as in Figs. 1, 2, or pressed against the tapering slde walls of the same, as in Fig. 3. The whole is then compressed together by pressure, so as to completely assemble the ammunition and finish the projectile for service.

Any form of head 4 may be adopted, and the ila-nge 6 may be formed in the case 3, either before or while assembling the parts; and any other mode of construction may be employed.

I am aware that there exists a double or multiple spiral ot wires united together at one end and free at the other end, the coils of said spirals being widely separated, whereby said independent spirals will, during the flight ot' the projectile, spread apart laterally at the unattaehed ends and liberate the shrapnel or filling.

I therefore claim- 1. A holder for the bullets of canister-shot,

ICO

consisting of a single wire wound in a spiral,` 3. The combination of aspirally-wound wire with its coils laid closely together, whereby holder, asheet--mctal case, a metal base, and the small balls are normally confined in place, metal head, all substantially as described. and are gradually dispersed during the flight In testimony whereof` Ihave signed my name 5 of the projectile by the gradual spreading of to this specification in the presence of two sub- 15 said spirals. scribing witnesses.

v4 2. The combination of aspirally-wound wire ALLEN G. SINCLAIR.

holder, asuitable head and base, and connect- Witnesses: ing means constituting theenvelope for canis- H. T. MUNsoN,

1o ter-shot, substantially as described. JOHN BLEscHKA.

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