US1011002A

US1011002A - Search-light projectile.

Info

Publication number: US1011002A
Application number: US62769811A
Authority: US
Inventors: Adolf Wuensche
Original assignee: Krupp Stahl AG
Current assignee: Krupp Stahl AG; Fried Krupp AG
Priority date: 1911-05-17
Filing date: 1911-05-17
Publication date: 1911-12-05
Anticipated expiration: 1928-12-05

Description

A. WNSGHE. SEABGH LIGHT PBOJBOTILE.

APPLIGATIOE FILED HAY17, 1911.

Patented Dec. 5, 1911.

lill!! y UNITED STATES PATENT OFFICE.

ADOLF WNSCHE, OF BERGE-RORBECK, GERMANY, ASSIGNOR T0 FRIED. KRUPP AKTIENGESELLSCHAFT, 0F ESSEN-ON-THE-RUHR, GERMANY.

. SEARCH-LIGHT PROJECTILE.

Specication of Letters Patent. Application led May 17, 191.1.

Patented Dec. 5, 1911. Serial No. 627,698.

T o all whom it may concern:

Be it known that I, ADoLr VVNSGHE, 'a subject of the Emperor of Germany, and a resident of Berge-Borbeck, Germany, have invented certain new and useful Improve-` ments in Search-Light Projectiles, of which the following is a specification.

The present invention relates to search light projectiles that are provided with parachutes, and the object of the invention is to supply an illuminating body of great comp'actness and at the same timeA to provide a perfectly sure unfolding of the parachute.

One embodiment of my invention has been shown in the accompanying drawing, wherein Figure l is an axial section of the search light projectile; Fig. 2, in larger scale, an axial section of one of the illuminating bodies or candles with a folded parachute, and Fig. 3, an axial section of one of the illuminating bodies or candles with unfolded parachute in the same scale as Fig. 1. j

The search light projectile represented in Fig. l is, generally speaking, constructed on the lines of a base chamber shrapnel. A is the shell, B the bursting charge, C the ejecting disk, and D the igniting tube, connecting the time-fuse E with-the bursting charge B. In several layers, diaphragms G, the candles or illuminating bodies F are distributed around the igniting tube D in the hollow chamber of the shell A. The principal parts of the 1 candle are the illuminating material H, a parachute J, made of strong material, suitable to be folded, and inserted between the two, a compression spring or other power source K (Figs. 2 and 3).. These several parts of the candle are inclosed in a casing F1. Said casing is divided into two compartments by `a partition f2, one of these compartments inclosing the illuminating material H and a match tl for igniting'the same. The other compartment of the casing F1 is closed during transportation by a loosely fitting lid F3 making a housing for the compression spring K, as well as for the folded parachute J (Fig. 2), the said spring K resting with one end against the partition f2 and with the other against a loose disk N, constituting a support for the'parachute J. A chord 1 connects the parachute J with separated by.

the casing F1 in the manner indicated in Figs. 2 and 3, by means of a collar p1 on the bolt P engaging with the opposite side of the partition f2. j

As shown in Fig. 1, the candles F are arranged in the projectile in such a manner, that the lids F3 are placed toward the base of the projectile. The height of the layers in which the candles are stacked in the projectile, is identical with the height of one candle including its lid, so that the lids F3 although subjected to t-he pressure of the springs K, will easily be kept in position by the rear walls in the hollow cells provided for the candles in the projectile.

In operation the time-fuse of the now described search light projectile, is set to ignite the bursting charge when the projectile is on the descending part of the trajectory. When the bursting charge B has been ignited, the flame sets lire to the match k1 and subsequently to each separate candle. As soon as the candle is set free, the spring K throws oil the lid Fa from the casing F1 and ejects the parachute. Directly the parachute is outside the casing, the resistance of the air, acting thereon, unfolds it. Owing to the fact that the compartment of the casing F, inclosing the parachute, and cappedl by t-he lid, is turned toward the base of the projectile' while inclosed therein, and4 that the ejection of the candle takes place on the descending part of the trajectory, when the rear end lies higher than the front end of the candle, the unfolding of the parachute is greatly facilitated. After their ejection, the candles fall slowly to the ground while the lighting material is burn- 1n A Ilaving thus described my invention, what I claim as new therein andvdesire to secure by Letters Patent, is

1. A search light projectile comprising a, plurality of illuminating bodies and means for sustaining said bodies in the air after liberation; said means comprising a parachute, folded and housedin. a compartment of the illuminating bodies, while said bodies are deposited in the projectile chamber.

2. A search light projectile comprismg a plurality of illuminating bodies and means for sustaining said bodies in the air after v liberation; said means comprising a parachute, folded and housed 1n a compartment ofthe illuminating bodies, while said bodies are deposited in the projectile chamber, and said illuminating bodies containing a power source acting o n said parachute for ejection.

3. A Search light projectile comprising a plurality of illuminating bodies and means for sustaining said bodies in the air after liberation; said means comprising a parachute, folded and housed in a compartment of the illuminating bodies, said bodies constructed to lill entirely the cells intended for them in the projectile, and deposited therein with the end containing the parachute turned toward the base of the projectile.

4L. A search light projectile comprising a shell body, a time-fuse, and a bursting charge, in combination With a plurality of illuminating bodies shaped to conform with the shape of the cells of said shell body, parachutes for said bodies, tained in a compartment of the illuminating bodies; While housed in the projectile; a power source also contained in said bodies and made to act on the parachute when the illuminating body has been liberated from the projectile on exploding the time-fuse, said parachutes sustaining the several illuminating bodies in the air While the illuminating material is burning.

The foregoing specication signed at Barmen, Germany, this 21st day of April,

ADOLF WUNSCHE. [ns] ln presence of- CHAs. J. WRIGHT, ALFRED HENKEL.

folded and con- L