An Improved Plug or Obturator for Explosive Gas Cartridges, Shells or Grenades, and the like.
Year: 1895

page_text: Date of Application, 18th July, 1895-Accepted, 24th Aug., 1895
E
: +1
COMPLETE SPECIFICATION:
An Improved Plug or Obturator for Explosive Gas Cartridges,
Shells or Grenades, and the like.
MORITZ BOEHм, of 64 Oranienburger Strasse, Berlin, N. in the German
Empire, Agent, 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 :-
My invention relates to a plug or obturator for explosive gas cartridges, shells or
grenades and the like, which plug or obturator will permit the simultaneous loading
or charging of a larger number of cartridges or shells with oxy-hydrogen or other
explosive gas than has heretofore been practicable.
In the accompanying drawing
Figure 1 is a longitudinal central section of a blasting cartridge provided with
my improved plug or obturator.
Figure 2 is an end view of the same, and
Figure 3 is a longitudinal central section of a grenade or shell provided with my
improved plug or obturator.
The blasting cartridge A, which may be of any desired form, is provided at its
plug end with an opening for the plug or obturator screw, which is narrower at its
inner part than at its outer part. At the position of transition from the narrower
to the wider part 6 of the opening, is provided an outwardly turned and sharpened
ridge a which forms a ring-shaped edge against which the plug B will bear when it
is screwed into the wider part of the opening. This plug B is provided with a
hexagonal or other suitably shaped gripping piece or part 1, with an inner screw-
thread and with an outer screw-thread k. By means of the first mentioned
screw-thread, the plug is screwed into the opening of the cartridge, whilst, with
the outer screw-thread k, it is screwed into an opening provided with a suitable
female thread formed in the common filling tube or supply-pipe for a number of
cartridges.
An admission passage c for the explosive gas is so arranged in the plug as to
An india-rubber or
open into the wide part b outside the ring-shaped edge a.
other U-shaped washer d prevents the gas from escaping through the screw-
threaded passages of the plug. In the middle of the hard rubber plug are arranged
the two igniting wires which extend into the cartridge and permit of effecting
the ignition by means of the electric spark.
The filling of the cartridge is effected as follows:-The outer thread k of the
plug B is screwed into the supply pipe. The cartridge A is then screwed back
slightly so that the ring-shaped edge a is removed a short distance from the closing
surface of the plug.
The explosive gas entering through the passage c passes between the closing
surface of the plug and the ring-shaped edge a into the interior of the cartridge.
When all the cartridges on the supply-pipe are filled with explosive gas (which
can be determined by observing whether the pressure-gauge on the supply pipe
shows the same pressure everywhere), the cartridges are again screwed down until
the ring-shaped edge a bears tightly against the closing surface of the plug B.
The plug B with the cartridge is then unscrewed from the supply-pipe and the
cartridge is ready for use.
The plug or obturator can be applied to grenades or shells in the same manner
as it is annlied to blasting cartridges. Figure 3 shows a longitudinal section of a

page_text: grenade or shell provided with the improved plug or obturator. The obturator is,
in this case, not made of hard india-rubber but is formed of brass or gun-metal
and provided with a hard rubber ring e, let into it, and against which bears the
ring-shaped edge a. The ignition is effected by means of a fuse g of any suitable
construction screwed into the plug or obturator B.
53
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is
50%
An obturator for explosive gas cartridges, shells or grenades and the like,
comprising a plug provided with a gas-admission passage, which plug, after the
cartridge or shell is filled with its explosive charge, is screwed further into the
said cartridge or shell and closes the hollow space thereof gas-tight from
the exterior by pressing against a sharp edge formed on the said cartridge, or shell,
substantially as herein before described.
'D. YOUNG & Co.,
11. & 12 Southampton Buildings, London, W.C.,
Agents for the Applicant.