US1681295A

US1681295A - Mushrooming bullet and method of making same

Info

Publication number: US1681295A
Application number: US12329A
Authority: US
Inventors: Edwin J Johnson
Original assignee: DOMINION CARTRIDGE Co Ltd
Current assignee: DOMINION CARTRIDGE Co Ltd; DOMINION CARTRIDGE COMPANY Ltd
Priority date: 1925-02-28
Filing date: 1925-02-28
Publication date: 1928-08-21
Anticipated expiration: 1945-08-21

Description

E. J. JOHNSON I MUSHROOMING BULLET AND METHOD OF MAKING 5AME 1 Filed Feb.28, 1925 w INVENTOR EDWIMJJOHNSON F 7 13r%1/WAQ(Z 4 ATTORN s m w 9,W%

Fig.3

Patented Aug. 21, 1928.

Enwm J. JOHNSON, or ivfoNTREAL, QUEBEC, CANADA, AssIeN'on T0 TRIDGE CQMPANY,LIMITED, 0E MONTREAL, CANADA. I

This invention relates to new and useful improvements in bullets, anda method. of making same, and the object of the invention is to provide a sporting bullet of the expansive or mushrooming type which will be 1nexpensive to manufacture and which will flatten outat the nose without breaking 01% forming aragged or broken end when it-hits an animal target, a featu'rewhichis very common in bullets now-in use. In other words, the outer shellof my bullet remains intact aft-erit has mushroomed to its final shape.

Anotherobject of this invention is to provide a bullet of the class stated, which will be safely handled and which can, without fear of accident due to premature explosion, be used in repeating rifles having magazines.

A further object is to provide an expansive bullet which will give the same accuracy as a solid nose bullet, such as military bullets or bullets used for high class target practice.

In my invention, I provide an easily manufactured bullet of the class stated, provided with an outer shell of copper or the like and an inner core of lead or like soft metal, said core being provided with a recess or cavity at one end adapted to be closed by the nose of the shell. In manufacturing the shell, it is drawn from a solid piece of copper, leaving one end open, and into the open end is placed the core, after which the edges of the open end'of the shell are turned inwardly to hold the core in position. To ensure that the fore part of the core is engaging with the inner walls of the shell at the nose, an indent is pressed therein, this indent also providing a feature which prevents an adjacent cartridge from being prematurely exploded when the bullet is used in a rifle having a magazine.

In the drawings Fig. 1 is a full size sectional elevation of my improved expansive bullet.

'Fig. 2 is an enlarged sectional elevation of the shell or casing before the core is placed therein. 7

Fig. 3 is an enlarged sectional elevation of the core. I

Fig. 4 is an enlarged sectionalelevation of the assembled bullet.

Fig. 5 is a plan looking on the nose of the assembled bullet.

Fig. 6 is a sectional plan of the bullet taken on the line 66, Figure 4.

' usHRooMINGnULLETANn METHOD or MAKING sAiuE.

Application filed February 28, 1925; 'SerialNo. 12,329.

. Fig. 7 is an enlarged sectional elevation of g f n names DOMINION CAR- Fig. 8 is a diagrammatic illustration of the 1 steps through course of manufacture, that is, from the solid block of material until it has assumed the shape shown in Figure 2-.

which the shell passes int-he Referring more particularly to the draw ings, 11'designates a solid piece ofwhich is pressed into its final shape, nated 12, after passing through the 13, 14'. and';15.x Th

cop-per desi'g stages rial through a series of punches and =dies'( not shown). I have shown the material passing through four stages but this may be increased or decreased according to the equipment of the plant manufacturing same. The shell is shown enlarged in Figure 2. It will be notlced that the shell is slightly tapered from its base 16, which is the open end of the shell, until it approaches a point approximately midway between the base and the nose 17. From this point it is tapered more abruptly towards the nose by curving the casing towards its centre. This provides a one-part shell, into which is 18 or core of soft material. said core being adapted to conform to the shape of the inner wall of the shell and is provided with a recess or cavity 19, the depth of whichis approximately core. The core is pushed or pressed into the shell from its open base and the closed end or nose of the case is adapted to seal the open end of the cavity and confine a predetermined volume of air therein. Theedge 20- of the base of the shell is turned inwardly to engage with and sink into the base 21 of the core to hold same in position. A cannelure 22 may be formed in the outer wall of the shell for receiving theupper edge of the cartridge (not shown). An indent 23 is pressed in the shell at its nose, so that thereis no pointed or rounded nose on the bullet which might contact with and pierce the primer of an adjacent cartridge when the bullet is used in a magazine rifle. This also serves to identify this type of bullet from the regular hard pointed bullets. The pressing of the indent also ensures that the upper edge of the core will contact with the shell and support same equal to half the length of the.

is is accomplished by the well known process of passing the mate placed a lead slug.

at its nose. I Modifications maybe made in the shape of the bullet without, degarting 'from'thes irit ofthe invention.

When t e bullet strikes the flesh of the animal or object at which it has been aimed,

the no se of the 'bullt lfnlushnooms. or out, as shown in Figure 7 This is' caused by thelhollow or weakened construction ei-[the nose ofthe soft metal or lead core which allows this to spread. Theshellpbeizngfnmdm of tougher and harder material, remains intact and holds the ends of the caazity closed,

thereby preventing the bullet from. bnrsting V and breaking up within the woundi on where the bullet "is lodged: will be? seen that the base of the core/has moved towards jthe'nose ofthe shell and that the cavity is a closed byuthe lead,' which tendsto move to- Ward said nose whentheifiull'etfhashit'its' mark. As will beseenvfrom: the foregoing, the bullet issi nply? and economically f'manu fa'ctured and lssupp'orted by its. ooi'ev'h-dm the'base to thenose of the bullet, thereby pioviding-a bullet which" 'can bef easily handled saidcore; being formedwith a eayigy extendin'g inwardly from the nose end-Yo without damaging same; By providing the'2 indent atthe nose, the danger of exploding adiacent vided witlra. one-piece shell, is 'very accurate and can be. used with the sain'e confidence as a solid or 7 military bullet used 7 in high ,class A mushroom bullet Comprising a one piece outer hollow-metal shell: closedat the nose endfandopenat the-Jother end, a core of V 'mouth of said pocketto seal saidr mouth and 1 toform an outwardly facing depression; at:

' thexnose end of the V cartridges in'repeating or. magazine rifles is eliminated. The bullet, being proh ve hereu to set w i nnwm .1; Joimson f