US1194363A

US1194363A - Baltasar fargas de casanovas and ramon rubio y roger

Info

Publication number: US1194363A
Authority: US
Publication date: 1916-08-15
Anticipated expiration: 1933-08-15

Description

B. F. DE'CASANOVAS & R. RUBIO Y ROGER.

ELONGATED PROJECTILE. APPLICATION mm MN. 22. 191s.

Patented Aug. 15, 1916.

Ill/92% Fig. 7' j 1 WW svfi m Attorney.

UNITED STATES PATENT OFFICE.

BALTASAR FARGAS DE CASANOVAS AND RAMN RUBIO Y ROGER, DE BARCELONA, SPAIN.

.ELONGATED PROJEC'IILE.

Specification of Letters Patent.

Patented Aug. 15, 1916.

Application filedJariuary 22, 1915. Serial No. 3,781.

hereby declare the following to be a full,

clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to projectiles used in fowling or sporting guns and also in military Weapons. Its object is to produce a projectile capable of following its trajectory Without deviating or overturning in The ordinary projectiles, particularly those flred from smooth bore barrels are liable to wabble, overturn and deviate in their passage, through the air. This is due to'a lack ofstability in the projectiles, their center of gravity being situated behind the intersection of the resultant of the forces due to the action of the air on the projectile and its axis.

The present invention consists in increasing the mass of the head or forward portion of the projectile and decreasing the mass of the rearward portion of the projectile, thereby advancing the center of gravity of the projectile, thus avoiding the lack of stability of the projectile to which its overturning and deviation in flight are due. In order to increase the mass of the head of the pro jectile, we may gii e to the projectile the shape of truncated cone, the larger base forming thehead of the projectile and the smaller base the rear of the projectile. We further form a flange at the rear of the projectile perpendicular to its axis and of a diameter equal to the caliber of the projectile. This flange aids in moving the point of application of the forces due to the action of the air toward the roar of the projectile. The head of the projectile is somewhat convex to reduce the resistance offered it by the air. A further arrangement for increasing great stability in flight.

the mass of the head consists in forming the forward portion of the projectile of a denser materlal than the rearward portion. This arrangement may be combined with that prevlously mentioned, producing a projectile of This invention may be applied to all types of projectiles and is shown in several modifications.

In the accompanying drawings, Figure 1 shows schematically an ordinary projectile in flight. Fig. 2 shows a projectile embody- 1ng our invention in flight. .Figs. 3, 4, 5 and 6 show various modifications embodying our invention. Of these Fig. 4 is a sectional view. Fig. 7 is a sectional View of a fowling or sporting cartridge embodying our invention.

.In Fig. 1, G is the center of gravity of the projectile, and I represents the direction of its momentary movement which is tangential to the trajectory. R represents the direction of the resultant of forces due to the resistance of the air. Since the center of gravity of the projectile is at the rear of the point of intersection of R with the axis of the projectile, the latter tends to be overturned or to deviate in its courses.

In Fig. 2, which shows a projectile 'embodying our invention, the center of gravity G is in advance of the point of'intersection 8O 7 of'the resultant R of the forces due to the resistance of the air, thus preventing any wabbling, overturning ordeviation of the projectile. In this figure, the projectile is shown as having the form of an inverted shape, thus formed, permits of a more ready access of the air to the circular flange Q 'formed at the base of the projectile and also advances the position of the center of grav ity.

Inthe modification shown in Fig. 4, the

projectile has the shape of that shown in Fig. 2, being formed, however, of a head A of heavy metal and a body B of lighter material, for example, compressed paper, the whole being united by a metallic socket C, which latter also forms a circular flange at the rear. This construction further advances the relative position of the center of gravity of the projectile.

Fig. 5 shows a projectile embodying our invention and provided in addition with fins 6 parallel to the projectile and increasing the resistanceoflered by the rear part of the projectile to the air. This form is also provided with projecting elements or guides 61 which serve to guide the projectiles in the barrel of the gun( F ig. 6 shows a modified form of the. projectile in which the head portion and the rear portion are each cylindrical in shape, the diameter of the head portion 'being greater than that of the rear portion. The end of the projectile is provided with a circular flange 9 This invention may obviously be'applied also to hollow projectiles or to projectiles which are intended to flatten or to burst on impact and of any caliber.

Fig. 7 shows the application of our invention to a bursting projectile for sporting guns. This projectile is provided with a body or shell 1; having externally the shape I being provided w1th a shot contaming cavity of a truncated cone and formed with a circular flange g at its rear end. The forward portion of the body 1; is hollow and is closed by a cover f which is slightly convex in shape.- At the rear of the cavity in the head of the projectile a cylindrical recess Z of smaller diameter than the base of the cavity is formed for the reception of the guTn-powder or explosive charge. On the flange or step formed between the two cavities, the protecting disk I: is supported and above it the wad j is placed. The charge of shot It is filled into the cavity upon this wad. At the base of the recess Z for the explosive charge a cylindrical opening is bored for the reception of the tube m containing. a composition 92 intended to be ignited by the charge of fulminate placed in the cavity below it. An opening p is bored into this cavity to permit of the escape of the gases produced by the combustion of the fuse mixture n. The ignition of the fuse mixture is effected by means of a priming cap '1 in the base of the projectile, which is fired by.-

the striker or plug 8 at the moment of discharge of the projectile. The striking member s is hollow and contains a portion of the propelling gun-powder or other explosive. It may be made of any suitable material and in the form shown consists of a hollow metallic body 8 provided with a proto fire the latter.

an outward movement of the striking member 8, together with the projectile, the inertia of the latter, however, causing a suflicient impact between the projecting element u of the striking member and the priming cap 7', This in turn ignites the fuse mixture at, finally resulting in exploding the charge in the cavity Z and, causing 'the bursting of the projectile and the dispersion of the charge of shot through its head. The shape of the wad 7' tends to insure a complete expulsion of the shot. The time elapsing between the discharge of the projectileland its explosion may be readily controlled by varying the sizeand character of the fuse. By using this device, we are enabled to greatly increase the accuracy and range of fire and the concentration of the shot discharge from the projectile.

Having thus described the invention, what is claimed, is

1. An elongated projectile for smooth bore guns, comprising a body having a head of the diameter of the caliber of the projectile and tapering rearwardly, and terminating at the rear in a circular flange of the diameter of the caliber of the projectile, said body at the forward end, an explosive charge containing cavity in the rear thereof, and means for igniting said charge at a predetermined time after discharge, and a slightly convex cover for said shot containing cavity.

2. An elongatedproj ectile for smooth bore guns, comprising a body having a head of the diameter of the caliber of .the projectile and tapering rearwardly, and terminating at the rear in a circular flange of the diameter of the caliber of the projectile, said body being provided with a shot containing cavity at the forward end, an explosive charge containing cavity in the rear thereof, means for igniting said charge, a slightly convex cover for said shot containing cavity, and a disk separating the shot containing and charge containing cavities.

3. An elongated projectile for smooth bore guns, comprising a body having a headof the diameter of. the caliber of the projectile and tapering rearwardly, and terminating at the rear in a circular flange of the diameter of the caliber of the projectile, said body being provided with a shot containing cavity at the forward end, an explosive charge containing cavity in the rear thereof, means for igniting said charge at a predetermined time after discharge,- a slightly convex cover for said shot containing cavity, a disk separatnames to this specification in the presence of two subscrlblng wltnesses.

BALTASAR FARGAS DE OASANOVAS. RAM6N RUBI Y ROGER.

Witnesses:

CONSTANTINO LOPEZ CID, J osi PARERA VIDAL.