US748827A - Gap for projectiles - Google Patents

Description

vices for the cap. Fig. 3 is UNITED' STATES Patented January 5, 1904.

CHARLES VAN CISE WHEELER, OF ALLEGHENY, AND ALEXANDER GEORGE MCKENNA, OF BRADDOCK, PENNSYLVANlA/ASSIGNORS TO FIRTH STER- LING STEEL COMPANY,

A CORPORATION OF PENNSYLVANIA.

CAP FOR PROJ ECTlLS.

SPECIFICATION forming part of Letters Patent No. 748,827, dated January 5, 1904i.

Application filed May 1| 1903. Serial No. 155,092. lNo model.)

T0 a/ZZ whom, it may cori/cern:

Be it known that we, CHARLES VAN OISE WHEELER, ot Allegheny, and ALEXANDER GEORGE MCKENNA, of Braddock, in the State of Pennsylvania,citizens of the United States, have invented certain new and useful Improvements in Caps for Projec'tiles, of which the following is a specification, accompanied by drawings.

This invention relates to caps'for projectiles, and has for its objects to improve upon the effectiveness of the cap with which modern'armor-piercing projectiles are provided and also to decrease the'liability of accident through the cap becoming detached inthe gun, and so jamming the projectile therein. Further objects of the invention will hereinafter appear; and to these ends the inven tion consists of a projectile provided with a cap for carrying out the above objects embodying the features ot' construction, combinations of elements, and arrangement of part-s, substantially as hereinafter fully described and claimed in this specification and shown in the accompanying, drawings, in which- Figure 1 is a longitudinal sectional view through an armor-piercing projectile provided with a cap constructed in accordance' with this invention. Fig. 2- is a transverse sectional view on the line X X of Fig. l, show,- ing the method of inserting the fastening dea transverse sectional view on the line X X of Fig. l after the fastening devices have been raised in place. Figi 4 is an enlarged detail view, in longitudinal section, through the projectile, showing the manner of forcing a tight t between the projectile-point and the cap.

Various means anddevices have been inventedfor attaching the cap to the head 'of the projectile-as,for instance, by means of movable set-screws, unhooking-clamps, or by unlocking slotdevices, and by forming an annular rib on the inside of the cap adaptedto beeompressed into a groove on the head of the projectile. Caps have been also secured to the projectile by means of soft solder or by Y -means of a retaining rib or ribs provided upon the proj tactile-point.

In those instances in which the cap is `made detachable by means j of the projectile,

f and the head of the projectile are of removable set-screws and the like the fastenings are likely to become loose, and this is a vital objection. Where it becomes necessary to compress metal into a groove on the head of the projectile, the instal of the cap must be soft enough to be forced cold inte the groove without rupture, and thus acini.r longitudinally instead of laterally, thereby rendering the attaching means imper feet, but with the imperfection so concealed that they are not to be discovered by subse quent inspectioni` The head of the projectilehas also been provided with a groove, and a rib on the cap has then been shrunk into the groove to holdthe cap in position; but this construction may lead to heating the point and thus softening it per- `ceptibly, which is a very detrimental desideratum against present armor-plates. The use of solder also involves beating and softening ot' the projectile-point and a thoroughlyreliable fastening is not, obtained. The provision' of ribs on the projectile-point is objectionable not only because of the difficulty of machining such shapes, but also in requiring increased energy for suchcontour of'point to perforate the plate.

According to our construction both the cap provided with grooves which are adapted to 'substantially register when the cap is in position on the point of the projectile and means are provided forinserting a fastening device or devices within the grooves in the cap and projectile.

Referring to the drawings, A represents a projectile, and B the captherefor. The cap is provided with a groove C on the inside of the same, which groove '1s adapted to register with the groove D on the head of the projectile when the' cap 1s placed in position. As

shown in this instance, these nular in lform and lie of circular cross-sectional outline it isto be observed that the grooves may be constructed of other shapes.

Means are provided for inserting suitable fastening devlces 1n the form of pins or rods E within th for holding the cap in position upon the projectile-point. the cap are shown communicating with the into the grooves by any suitable means-as, for instance, by blows delivered bya hammer.

As shown in Fig. 4, the grooves() and D nearlyacoincide or inexactly register, and it drawn tightly down over being placed in position therein by suitable means, may have rounded points and may be made of steel, are forced into the groove. are shown of sufficient length to completely inserted and held tightly the rods E, which very simple, while a very great force is required to displace the cap. A very small groove can be used, if desired, thus diminish'- ng the risk of weakening the projectile-poi'n t.

This would be more important on large-caliber projectiles. l

If desired, the rods E may be of slightly larger diameter than the grooves, thus 'msuring the tiglltest and most st ant detection.

As no heat is applied to the point of the projectile, it is notsoftened. In oblique impacts, it is particularly important that "the adapted to register when cap shall be securely fastened, so that as the Obviously this invention may be embodied in varying forms, and some features of the invention may be used without others.

tially the purposes set forth.

. A projectile and a cap therefor, both of the projectile, the; cap having provision for the insertion of said holdin means from the outside, for substantially the purposes set'forth. 4. A projectile,

and fastening means lying within head and cap, for substantially the purposes set forth.

5. A projectile,

portion, and a cap provided with an interior head/when the cap 1s in-position on .the point of the projectile, and a rod or in bo'th'of said grooves, for substantially the purposes slet forth.

t The combination. of'a projectile and a cap therefor',

both provided with grooves the cap is in position'on the head of the projectile, a rod or rods, and means for inserting said rod or rods in the registering grooves from the outside, for substantially the purposes set forth.

In testimony whereof we have signed this specification in the presence of two su bscribing witnesses.

CHARLES VAN OISE WHEELER. ALEXANDER GEORGE MCKENNA. Witnesses:

' W. B. GREENWOOD,

F. G. HARRISON.

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