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Publication numberUS1248656 A
Publication typeGrant
Publication dateDec 4, 1917
Filing dateJun 28, 1913
Priority dateJun 28, 1913
Publication numberUS 1248656 A, US 1248656A, US-A-1248656, US1248656 A, US1248656A
InventorsSamuel T Henry
Original AssigneeBethlehem Steel Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1248656 A
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Description  (OCR text may contain errors)

Patented Dec. 4, 191






Specification of Letters Patent.

Patented Dec. 4, 1917.

To all whom it inay concern:

Be it known that I, SAMUEL T. HENRY, a citizen of the United States, and resident of South Bethlehem, county of Northampton State of Pennsylvania, have invented a certain new and useful Improvement in Projectiles, of which the following is a specification. i

This invention consists in a projectile having an attached base which is effective in operation and simple and economical to construct. The invention is shown diagrammatically in the accompanying draw- 1 ing in which,

Figure 1 is a longitudinal section of a pro jectile having its base connected according to the present method;

Fig. 2 is a partial section illustrating the method of shapingthe end of the shell and assembling the base before finallyconnectthe two together, as shown in Fig. 1;

in H Figs. 3 and 4=are sections similar toFigs.

1 and 2, but showing another form of the invention;

Figs. 5 and 6 are similarto Figs. 1 and 2 respectively and show still another form of the invention.

The invention consists in providing either the base or the body of the projectile with anannular under-cut portion and the'part that is to be fitted thereto with a flange adapted to be rolled, compressed, orswaged into the under-cut portion to securely lock the two together. The part which is to be pressed into the under-cut portion is formed with sufiicient metal so that when the operation is completed the projectile will have the usual cylindrical form at its base.

Fig. 2 shows one way of carrying out the method by forming the annular base plug B with an annular under-cut groove 10. This groove is so formed that the base will have an annular flange 11 at its rear side and an annular portion 12 at its forward side which tapers toward the flange 11. The shell body A is formed with an annular recess 13 which may be cylindrical in form and equal in diameter to that of the larger end of the part 12 of the base, so that said part Will fit neatly into the annular recess 13, as shown in Fig. 2. The flange 1 1 sur roundingthe annular recess 13 is formed with an outward flare containing sufiicient metal so that when the end of the shell body is pressed into the groove 10 it will fill the groove and leave the outer surface of the body flush with the outer margin of the flange ll of the base, as shown in Fig.1.

The two parts of the shell are formed and assembled, as shown in Fig. 2, and then brought into the form shown in Fig. 1 by rolling, swaging or compressing the flange of the shell into the annular recess of the base plug. Any suitable apparatus or dies may be used for this purpose.

In Fig. 4, the shell body A is formed with an under-cut groove 15 at its rear end and the base B is formed with a flange 16 having a cylindrical inner wall and an excess of metal which will-fill the groove 15 when the parts are rolled or swaged together The form shown in Figs. 5 and 6 is similar to that shown in Figs. 1 and 2, excepting that the flange 11 is omitted, the base or closure B being tapered rearwardly throughout its entire perlphery. The .rear end of the body is formed with an annular recess 17 adapted to receive the base and the flange l8 surrounding the recess is formed with an excess of metal which will fill out the base of the shell to the usual cylindrical form after the flange is swaged or pressed down upon the base B, as shown in Fig. 5'.

In all three forms illustrated, one of the parts may be said to be under-cut and the other part provided with a flange adapted to be swaged or pressed into engagement with the under-cut portion of the mating part, the said flange having sufficient metal to fill out the base of the finished shell to the usual cylindrical form. Other forms of the invention may be used but the above will sutfice to fully illustrate it.

It will also be noted that in the several embodiments of the invention illustrated, the cylindrical body has a substantially annular seat in a plane at right angles to its axis to receive the base and the base is fitted to this seat before the parts are swaged together, thus the parts are so formed that when assembled the projectile has the required dimensions, with a cylinhaving a cylindrical inner face. I a

the cylindrical outer surface "of the projec V tile extending to the'plane ofthe outer sur .face of the base, the body of the projectile having a substantially annular seat in a .plane at, right angles to itsaxis against which the base abuts, substantially as described.

As an article of 'anan uiact'u're, la -pro- *jecti le body i n the fo-rm of :a h'o'llow cylinder f having an annular bendable-flange on the end thereof, said flange being wedge shaped in cross section and outwardly flaring an As an article of manufacturea pro- 'jectilebody in the form of a cylinder having an axial recesstherein opening at one end thereof, and an annular bendable flange concentric With the axis 6E theprojectile ,7 on said end, said flange being edge shaped in cross, section and outwardly flaring and in presence of two Witnesses. it


r witnessesz I v I V 1;; j v

JosEPH .TRoxnLL, W V EDWIN ncMmm; V

dopies ofthis patent may? be obtained 01 fivefcents each, by addressing- Liane fdommissionr of Iatents, Washington, D.- Q. 3 a Y I having a cylindrical inner surface offset

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4444112 *Mar 27, 1981Apr 24, 1984A/S Raufoss AmmunisjonsfabrikkerMulti-capability projectile and method of making same
US4958570 *Sep 8, 1989Sep 25, 1990Harris David ABullet assembly and method of making the same
U.S. Classification102/517, 86/51
Cooperative ClassificationF42B12/06