US451598A - Strom - Google Patents

Description

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PERCUSSION FUSE. y

Patented May 5, 1891.

(No Model.)

NQ. 451,598,- Y

VTo ait whom it may concern:

` UNITED STATES ATENT OFFICE..

t KARL Kuno immisrni'm, on wEs'rMIN-s'rna, ENGLAND.

PERoUssioiN-Fusa.

SPECIFICATION forming part of Letters Patent No. 451,598, dated May 5, 1891.

Application led November l1, 1890. Serial No. 371,068. (No model.)

B e it known lthat I, KARL KUNo MALM- STROM, engineer, a subject of the King of Sweden, residing at32 Victoria Street, in the `city of VVestmiuster, England, have invented certain new and useful Improvements in Percussion-Fuses, of which the following is a specification.

This inventionhas for its object improvements in' percussion-fuses.

I make these fuses in such manner that they are armed or rendered active by the pressure ot' the powder-gases on the base of the fuse while the same is in the gun. This pressure bends the metal of which the base of the fuse is composed, and by so doing releases lookin g devices and iiberates a striker, which by its forward movement when the projectile strikes, lires the bursting charge. According to one arrangement I form a cylindrical cavity in the rear of the striker and fit within it a hollow or tubular stud fixed to the fusebody- A locking device or wire passes through this stud and its ends enter holes in the striker. A pin abuts on this wire and also upon the base of the fuse. lVlieu the gun is fired, the

pressure :in the gun bends inward the metal forming the base of the fuse, the pin is thus thrust forward, the wire is displaced, andthe striker is liberated, ready for action.

This arrangement is represented in longi tudinal section by Figure 1 of the annexed drawings. Figs. 2 and 3 illustrate certain details of this mechanism. Figs. 4, 5, 6, and show7 modifications. Fig. 5 is a section through the lower part of the striker, showing the triple head of the clip engaging therewith.

in Fig. l, a.- is the fusebody, usually7 of brass, and adapted to be screwed into the base of the projectile. b is a cap screwed in to close the body U. in front. c is a primer or patch of fuhninate lodged in a recess in the cap h and protected in the usual manner. d is the striker. It is armed in front with the point d to strike and explode the fulminate. is a stud-piece, of hard metal, screwedinto thef use body and carrying, the tubular stud e. f is a soft-metal wire or looking device inserted through holes and y in the striker and stud, respectively, and then bent to the form shown.

bendable bottom may be part of the basebody, as in Fig. l, or may be screwed fast into it, asin Fig. 4f, so as to remain immovable when in action, except in so far as it is bent or deformed by the pressure.

In this arrangement the cap ZJ is dispensed with,thefulminatc-patoh being setin arecess in the body a. The body is closed in rear by a base-plug a', screwed in. The base-plu g is deformed or bent when the gun is red and the operation is the same as in Fig. 1.

Sometimes in place of the wire and pin I employ locking devices iu the form of catches to take hold of a stem projecting from the striker. These catches are upon a piece which is thrust forward by the base of the fuse when it becomes bent, and so the catches are brought against inclines within the fuse, which cause them to release their hold of the stem. This arrangement is illustrated by Fig. 5. Thestriker d has a stem d project ing from it rearward through a central hole in the piece c. The base-plug a has a spring clip 7i riveted to it. (Shown in plat by Fig. 5t.) The clip has arms which tend inward. They terminatein claws which take hold of a head upon the stem d'2 When the gun is tired and the base-plug is deformed, the clip is thrust against inclines e? e2 ou the piece e, and these open the clip and release the pellet; or I may arrange the catches in such manner that the pressure of a pin moved by the flexible base of the fuse upon a part in connection with the catches causes them to spring apart and release the striker. This arrangement is illustrated by Fig. 1i. Here the cap b is provided witl; a crosspiece Zi', on which the striker d is seated, and it is held down upon its seat hy-a clip h, which inthis case consists of a narrow steel band bent twice at right IOO angles. It passesbeneath the cross has claws at its end, whieh rest upon rneiiront of the striker'. Then the head g" olf the pin (j thrusts upon the center part of the clip, its' 5 arms separate and release the striker; or, according to another arrangement illustrated by Fig, 5,1 form a 'head g upon the pin g and eause this to be received into a cavity within the striker` (L. This pin g, so long as it retains the position in which it is originally placed, llooks the striker fast Within the fusebody; but when the base of the fusebody is y bent by the pressure of 'the powder-gases upon it 'the pin is driven forward, and its head g no longer prevents the striker moving so 'far as to bring iis point CZ into contact with the patch of fulrninate e, by which the bursting' charge ot' the projectile is ignited.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to beperform'ed, I would state that I am aware that fuses have before been mad e in which the re. lease of the striker has been obtained by the pressn re ofthe powdengases in the gun-chamn LleitefsfjPatem Non-451,598..

following corrention:7

s l'revcord of the 1 I in Letters 'Signedg eountersiried`,. .sealed this' "Maj",-

ber, causingr the movement of a plug in a.' eaviiy into which it is iii-ted; but with this arrangement there is always some danger o the passage of the powder-gases into the interior ol' the fuse, and the fuse-case not being 3o hermetically-closed is in other respects objeetionable.

lVhat l claim is i. A percussioirfuse formed with abendable or yieldino base in operative connection 35 with locking devices, which, when the gun is ii red, are released and set free, and a striker to ignite Jshe fnlmin'ate or primer, substantially as described.

2. A. percussion-fuse having a bendable or 4o yielding oase or end in operative connection with a wire which normally holds a striker awayfrom a primer, and Which,vwhen the gun is fired, is released to set free the striker to ignite the fnlminate or primer, substantially 43 as described.

y KARL KUN() MATAISTROM.v

Witnesses:

'HERBERT V. JORDAN,

F, A. NOL.

thev application-ofarlKn-no Melrostrinifofgwestrninster,England,'Rian"improvel erc'ns'sion-Fusesj? an error appears/inthe printed speciiication rquiringfthe g line 37, page 2, therclause farev released andlsetfree.v

v'Patenti should with thisoorrection-therenrithat the saine may conformitothe m1318911 ,1, ,oXaUsBussEYr, Assistant 'Secretary-.oftheInterior:

Correction in Leiters Patent No. 451,598.

lt is hereby certified that in Letters Patent No. 451,598, granted May 5, 1891, uj the application of Karl Kuno Malmstrin, of Westminster, England, for an impr( ment in Percussion-Fuses, an error appears in the printed specification requiring following correction, Viz.: In line 37, page 2, the clause are released and set i and a striker;7 shouldl read are released, cmd set free a striker and that the Let i?atent should be read with this correction therein that the same may conform to record ot' the ease in the Patent Office.

Signed, eountersigned, and sealed this 12th day of May, A. I). 1891.

[SEAL] CYRUS BUSSEY,

` Assistant Secretary ofthe Inter Countersgned:

C. E. MITCHELL,

Commissioner of Patents.

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