US1440191A - Percussion fuse - Google Patents

Description

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Dec. 26, 1922.

E. J. T. WENNERSTROM. PERcussnoN Fuse. Fuso Nov. 27. 1920.

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PERcussloN Fuss. Fuso Nov. 27. 1920.

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ERNST JOHAN TORSTEN WENNEBSTRIV, OF IBOFORS, SWEDEN, ASSIGNOR TO AKTIE- BOLAGET BOFOBS, OF BOFORS, SWEDEN.

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Application filed November 27, 1920.

To all w 7mm z5 may concerny Be it lrnown that l, ERNST JOHAN TonsTLsN lllnNNnRs'rnM, a subject ont the King of Sweden, residing, at Bot'ors, Sweden, have 5 invented new and usefulimprovements in Percussion F uses, of which the following is a specification.

The present invention has [or its object an improvement in such by which the primer and the eetonator shell, prior to the discharge of the gun, are so disposed with relation to each other that explosion cannot talze place and by which at, or after the discharge of the gun, the primer or detonator 15 shell is removed by means or spring` in such a manner that the primer will rest within the detonator shell, the invention being characterized by one or more locking' devices arranged in such a manner that inde- `pendently of the spring they will loclr the primer or the detonator shell in the new position in which said primer or detonator siell has been brought by the spring at or after the discharge of the gun. ln the accompanyingdrawing, forming part or this specii'ication,

Figure l is a vertical section taken approximately on the line l l of Fig. 3, the primer being' shown in its original position;

Fig. 2 illustrates the fuse with the primerl in a locled position within the detonator shell; and

Fig. 3 is a transverse section taken on the line lll-lll ot Fig. l.

Referring to these drawings, l is the tube body, 2 the detonator shell, 3 the primer, il the armament shell which is comiocted with the primer and 5 a propelling spring which forces the primer into the detonator shell atter the armament shell e has been disengaged from the ltwlrinc,` balls 6 in the well lmown manner.

According` to the invention one or more locking devices, which in the preferred embodiment shown in the drawings, consist of balls 8 arranged in cavities in the guidebody 9 for the hammer 7 in such a manner that they lock the hammer to the guide-body,

Serial No. 226,802.

until the armament shell er after the dis charge of the gun has been pushed beyond the locking devices, when these latter', through centrifugal force, are thrown out of the cavities and release the hammer but loclr the armament` shell, preventing this from returning` to its original position.

Having' now particularly described the nature of my invention and 'the manner ot its operation, what l claim is l. In a fuse having` a primer and a detonator shell adapted to initially occupy a safety position relatively to each other, a tube enclosing),` said members, a spring for changing the rela-tive position of said primer and detonator shell so that the primer is locatedwithin 'the detonator shell, the combination of a locking device for firmly locling the primer and detonator shell independent oif the spring in the position last mentioned..

2. In a fuse having` a primer and a detonator sh ll adapted to initially occupy a safety position relatively to each other, a tube enclosing said members, a spring 'for changing the relative position ot said primer and detonator shell so that the primer is located within the detonator shell, the coinbination of a locking; device' for lockingthe primer independent ot the spring in the second position, said locking' device, before the discharge of the gun, being used Jfor locking' the hammer.

3. In a fuse having a primer and a detonator shell adapted to initially occupy Aa` safety position relatively to each other, a tube enclosing` said members, a spring' for changing the relative position ot said primer and detonator shell so that the primer is located within the detonator shell, the combination of a locking' device for firmly locking' 'the primer and detonator shell independent of the spring` in the position last mentioned, said locking device consisting of a plurality of balls.

In testimony whereof l have signed my name to this specification.

ERNST JOHAN TORSTEN WENNERSTRM.

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