Improved Means for Producing Detonations for Alarm or Other Purposes.
Year: 1898

page_text: Date of Application, 18th Mar., 1898-Accepted, 14th May, 1898
COMPLETE SPECIFICATION.
Improved Means for Producing Detonations for Alarm or Other
Purposes.
We, WALTER BRUCKNER, Manufacturer, of 60, Banhofstrasse, Sobernheim, on
the Nahe, and ANTON NIEMCZIK, Manufacturer, of 7, Bruckenstrasse, Berlin, in the
Empire of Germany, do hereby declare the nature of this invention and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement :--
This invention relates to an improved apparatus for exploding blank cartridges
for the purpose of giving alarm signals or the like.
.
In the annexed drawing
Fig. 1 is a section of the apparatus.
Figs. 2 and 3 illustrate different constructions of a cartridge receiver.
Figs. 4, 5, 6, and 7 show modifications of the apparatus.
The apparatus consists of a tube a closed at one end by a fixed cap a¹, a striking
pin or trigger b operates within the tube a. This trigger is guided and slides easily
within the tube and is provided with longitudinal grooves which act as a port for
the passage of the air, when the striking pin or trigger is moved. The striking pin
or trigger is conveniently diminished at its front end as represented in the drawing
and in such a manner, that the head surface b¹ corresponds with the size of the
head of the cartridge, so that it can cover the latter. The nipple z projects slightly
from the head surface 61 and consequently on account of its short
length it can be of very small diameter without fear of its bending
when acting on the cartridge. This nipple explodes the cartridge and
strikes against a small cap the like of the cartridge. As the nipple
is of short length, the head surface of the striking pin abuts against the
cartridge head after or at the moment of ignition and thus prevents the cartridge
from being thrown back into the tube a.
or
Into the open end of the tube a there is screwed a cartridge receiver c which is
provided with a central bore e for receiving the cartridge d. The size of this bore
depends upon the size of the cartridges.
The screw threads for the cartridge receiver may be of any kind, or as shown in
Fig. 4 the cartridge receiver c¹ may be secured in the tube a, by means of a pin or
pins on the same, arranged to engage into suitable slots in the tube a.
In order to give to the striking pin or trigger b an abutment, an interior annular
swelling his provided in the tube at a suitable distance from its open end.
When a cartridge is inserted into the cartridge chamber and the latter is screwed
or arranged in any other manner in the tube, the striking pin or trigger is at the
back end of the tube as shown in Fig. 1 and by a suitable and sharp movement
given by hand to the device the striking pin will be driven forward with such
force in consequence of its weight, that the nipple of the same will explode the
cartridge and a sharp report will result, which is sufficient for the purpose of an
alarm signal or the like.
After having exploded the cartridge the cartridge receiver is taken out, and the

page_text: empty cartridge case is removed by any suitable means a new cartridge is inserted
and the cartridge receiver again inserted into the tube.
In order to facilitate the insertion or removal of the cartridge, the cartridge
receiver as shown in Figs. 2 and 3, can be constructed so as to open. In Fig. 2
the cartridge receiver is cut as far as its screw threads, and can be opened on the
hinge m and secured by a bolt or a spring i so that for inserting or removing the
cartridge the receiver need not be removed from the tube.
In Fig. 3 the receiver is entirely divided and can be opened on the hinge n only
when it is out of the tube.
Instead of causing the striking pin to be moved forward by its inertia when a
movement is given to the apparatus by hand, the same can be operated as in
Figs. 5 and 6, by a spring f which is adjusted in the operative position by drawing
the striking pin back in the tube by means of a handle o passing through the fixed
end of the same and is fixed in position by introducing a pin o¹ fixed on the trigger
and moving in a slot s into a cross slot s¹ of the tube. When the pin o¹ is moved
out of the slot s¹ the spring drives the trigger forward.
Fig. 7 shows the device without the slot and pin so that the spring being con-
tracted by pulling back the striker 6 by means of the handle o, comes into effect
as soon as the handle o is released.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed we declare that what we
claim is:-
1. An apparatus consisting of a striking pin or trigger b having a nipple z and
grooves movable by inertia within a tube a open at one end and having means for
receiving a cartridge receiver c provided with a bore e substantially as and for the
purpose set forth.
2. An apparatus as described in Claim 1 in which the trigger b is operated by a
spring and slots s, s¹, a handle o and pin o¹ are provided for controlling same sub-
stantially as and for the purpose set forth.
3. In an apparatus as in Claims 1 and 2 the arrangement of a cartridge receiver c
opening on hinges m or n substantially as and for the purpose set forth.
4. In an apparatus as in Claims 1 and 2 the arrangement of a trigger b having a
nipple shortened in such a manner, that the front surface 61 of the trigger 6 lies
against the cartridge head at the moment of explosion.
2
Dated this 18th day of March 1898
HERBERT HADDAN & Co.,
Agents to Applicants, 19, Buckingham Street, Strand, W.C., London.