DE488662C - Highly sensitive percussion fuse with protection against premature setting - Google Patents

Description

ο- '· ■

i 4 "FEB. 1950

ISSUED ON JANUARY 7, 1930

REICHSPATENTAMT "

PATENT LETTERING

M 488 662
CLASS 72 i GROUP 3

Sch goio6 Xl / yzi Date of publication of the patent grant: December 12th ig2g

Schneider & Cie in Paris

Highly sensitive percussion fuse with protection against premature arming.Patented in the German Empire on April 24, 1929

The priority of the application in France of July 20, 1928 has been claimed.

The invention relates to highly sensitive percussion fuse and has to Purpose of creating a fuse to avoid the sharpness of such highly sensitive ones Prevent detonators from reaching a point on the projectile trajectory that is affected by the Gun muzzle is far enough away. The security is intended in particular to the arming of the detonator when striking the accidentally not removed To prevent muzzle cap.

The fuse initially comprises a locking piece in a known manner, which is in the Way between the detonator of the detonator and the projectile charge is inserted and which is deployed under the action of the propellant gases of a small charge of powder, when the shot is fired, an additional ignition device (firing pin and squib) was ignited.

What the new arrangement in a fuse of this known type essentially is the feature that the locking piece has the shape of a locking pin, which emerges at one end and has a widened head at this end, on that of the small propellant charge for the purpose of ejecting the locking pin delivered gases come into effect directly or by means of a hammer. These gases can accordingly be developed in a channel which is caused by the ignition body through no connection with the bearing point of the actual locking pin t sits in such a way that no part of the gases originating from the kiekt propellant charge to the G lap charge can reach.

An embodiment of the subject invention is shown in the drawing represents. It show the new facility Fig, in a vertical section after the storey central axis, Fig. 2 a section according to 2 of Fig. 1.

In the embodiment shown: a very light ignition device is arranged in the igniter body b , which gives the igniter ei: extremely high sensitivity. This ignition device can be of the known arrangement; In the embodiment shown, the ignition device comprises a firing pin a- and a squib t in a common casing.The casing is held in the detonator body at rest by means of a pin a ⁴ * and Geschoßladui is used in a transverse position arranged for this purpose in the ignition body. According to the invention t sits the locking pin c a widened «head c ¹ , which is in a corresponding out

formed recess is fitted in the outer surface of the detonator body. A part c of this head C ¹ is arranged so that it can d, directly or by means of an inserted into a guide of the detonator body movable pressure piece the shock of the propellant gases of a small propellant charge / record, which is housed in a channel of the igniter body. According to the invention, this channel has no connection that penetrates the detonator body with the seat of the locking pin C. B. includes a firing pin e , which is held back by a primer / \ by a locking spring g . A grain of powder Λ made of pressed black powder is arranged between the squib / and the additional charge /, and the burning time of this grain of powder is calculated so that it lasts, for example, a second or more.

A branch channel i ^{l of} the channel /, which contains the additional ignition, the small propellant charge / and the powder grain h , allows the withdrawal of the powder resulting from the powder grain! Powder gases. The locking pin c _; c ¹ , c ² becomes in! the rest of a locking pin tn held in the detonator body b . In this bolt j an axial channel c ^{3 is} arranged, into which a vertical channel c ¹ opens. If the percussion detonator arises prematurely, the pilot jet can escape to the outside ^{through channels c 4} and c ··.

As can be seen without further ado, the paths for the ignition jet of ^{the percussion cap ß 3 of} the percussion fuse and for the propellant gases of the small propellant charge are completely independent of one another.

At rest, the parts assume the position shown in the drawing. When the shot is fired, the firing pin e of the additional ignition compresses the spring g due to its persistence and strikes the primer /, whose jet of fire ignites the powder grain h.

The burning of this powder grain is only finished after a certain time, when the projectile is already at a suitable distance from the gun muzzle. At this moment the small propellant charge / is ignited, and the propellant gases generated thereby act on the pressure piece d, which causes the bolt C to be ejected after the shear pin tn has broken. Incidentally, the pressure piece d can be rigidly connected to the part c- of the locking pin. Only after the locking pin has been ejected is the connecting channel k released so that the ignition jet of the primer a ³ can get into the projectile charge. If the pressure piece is rigidly connected to the head c ^l , c ^{2 of} the locking piece, the shear pin can also be attached to the pressure piece d .

Claims (2)

Patent claims: i. Fuse to prevent highly sensitive impact fuels from being armed before the projectile arrives at a predetermined distance from the gun muzzle after firing, with a blocking piece built in by way of the ignition jet from the ignition device after the projectile charge, which by the gas pressure one of one at Firing the additional ignition device which becomes armed, ignited powder charge can be ejected, characterized in that the locking piece (c) built into a transverse channel of the detonator body is equipped with an outwardly protruding abutment (c ^l , c ² ) on which directly or by a pressure piece (d) the propellant gases of the additional charge can act, the additional ignition device and the propellant charge being accommodated in a channel which in the detonator body has no connection with the ignition channel (Λ) of the projectile ignition. 2. Embodiment of the fuse according to claim i _}, characterized in that the locking bolt (c) is partially pierced lengthwise, and that in this longitudinal bore (c ³ ) opens a vertical channel so that if the projectile detonator is armed prematurely their ignition jet to the outside is derived. For this purpose ι sheet of drawings