US1013070A - Armor-plate. - Google Patents

Description

H. SAVAGE.

ARMOR PLATE.

APPLICATION FILED FEELS, 1909.

1,013,070, Patented Dec.26, 1911.

J-QVJWQ 1 W ATTOFIYAEYIS UNITED STATES PATENT oEEicE. f

HUGH SAVAGE, 0F SERAING, BELGIUM.

ARMOR-PLATE.

Application filed February 6, 1909.

To all whom it may concern:

Be it known that I, HUGH SAVAGE, a subject of the Kingdom of Great Britain and Ireland, residing at Seraing, in the Kingdom of Belgium, engineer, have invented certain new and useful Improvements in Armor-Plates, of which the following is a specification.

The modern armor plates provided with a cemented face constructed according to the Krupp or Harvey systems, can only be attacked, successfully, by means of projectiles provided with a cap.

Now, this invention has for its object to give to armor plates for iron-clad purposes such an arrangement as will permit of said plates resisting the attacks of projectiles provided with a cap.

\Vith this object in view, the plate is formed, as shown in the accompanying drawing, with two superposed plates 1 and 2, having together the thickness which would be given to a single plate having a hardened face, in view of the resistance to the penetration which it is desired to obtain.

The principal plate 1, has from seven to eight-tenths of the total thickness; it has a face 3, hardened according to well known methods. On this principal plate is set the second and thinner plate 2, having from two to three-tenths of the total thickness. This second plate (covering plate) may have a hardened face, or it may even be entirely of hard steel. It must be of sufficient rigidity to neither give way lengthwise under the shock of the projectile, nor be driven in taking the contour of the latter. The success of the capped projectiles must be attributed to the support afforded by the cap to all the parts of the point of the projectile, thus preventing the point from being crushed or split under the shock against a hard plate, as is the case for ordinary projectiles having a non-protected point. Another accessory effect of the cap is to produce some superficial defacement of the plate, which thus loses at the attacked point its hardest outer layer and then lets itself be easily penetrated by the head of the projectile kept unimpaired by means of the cap. Experience shows that the cap never accompanies the projectile into the perforation made in the plate, but is completely separated from the same after the first shock.

Specification of Letters Patent.

Patented Dec. 26, 1911. Serial No. 476,362.

In the arrangement according to this invention, the frontor covering plate is of suliicient thickness to rid the projectile of its cap, and is of such hardness that it does not become molded under the force of the projectile (which would amount to the constitution of a second cap spread over the whole surface of the plate). The point of ihe projectile thus finds itself brought without any support in front of a second undamaged hardened surface, and is unable to exercise on the latter any other than the ordinary effect of a projectile unprovided with a cap.

In the assembling of the two plates it is preferable to avoid the use of either bolts or screws, as the places occupied by the same would constitute so many weak points. Therefore the assembling of the two plates is effected by fitting the one in the other in the manner shown in the accompanying drawing. The contacting faces of both plates are provided with grooves 4 and with projections 5, joined together by curved surfaces. In order to secure a certain flexibility of the assembled plates and to facilitate the assembling, the contacts at 6, 6 are reduced to a minimum of surface and may even become simply linear. The gaps left between the two plates may be filled up by soft metal 7, fusible at a low temperature in order not to soften the surfaces of the plates. This filling with metal will also serve to transmit the shocks in a lateral direction and to prevent the splitting of the projections of the plates.

The assembling shown is simply given by way of example and does not exclude the use of other fastening systems.

Claims.

1. Armor plate to stop capped projectiles, comprising two closely superposed plates of hard steel having tongue and groove connection, the outer plate being approximately one third the thickness of the inner plate and having a hardness adapted to stop the cap and cause the point of the projectile to perforate the said outer plate, and the inner plate having a hardness adapted to break the uncapped point of the projectile, substantially as described.

2. Armor plate comprising two plates of hard steel superposed and dovetailed together, the lateral faces of the ribs and grooves of the dovetails having 8 shaped profiles which touch each other in their middle and move away from each other high temperature filling the spaces between 10 at their curved parts, substantially as dethe said faces. scribed. In testimony, that I claim the foregoing 3. Armor plate comprising two juxtaas my invention, I have signed my name in posed steel plates having projections and presence of two subscribing Witnesses. grooves substantially dovetailed together, HUGH SAVAGE. the lateral faces of the said projections and Witnesses: grooves being somewhat separated one from CECIL FENToN, another, and a metal melting at not a very COUPANT DAUS.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

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