IMPROVEMENTS IN OR RELATING TO BREECHLOADING ORDNANCE
Year: 1884

page_text: I JOSIAH VAVASSEUR of the London Ordnance Works Southwark in the
County of Surrey Engineer do hereby declare the nature of my invention for
"IMPROVEMENTS IN OR RELATING TO BREECHLOADING ORDNANCE" to be as
follows:-
This invention has for its object improvements in or relating to breech loading
ordnance.
The improvements relate to the protection of the elastic pad of the obturator
known as the De Bange.
The canvas exterior of the pad gets cut through very quickly at the exterior
particularly at the front part.
Instead of making the cover of the pad of canvas throughout I make it of
a fabric woven with the threads in the direction of the warp of copper or other
suitable wire and in the direction of the weft of threads of fibrous material as for
canvas.
D. I CIL 1
CARPMAEL & Co.,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
I JOSIAH VAVASSEUR of the London. Ordnance Works Southwark in the
County of Surrey Engineer do hereby declare the nature of my invention for
"IMPROVEMENTS IN OR RELATING TO BREECHLOADING ORDNANCE" and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement :-
This invention has for its object improvements in or relating to breechloading
ordnance.
The improvements relate to the protection of the elastic pad of the obturator
known as the De Bange.
The canvas exterior of the pad gets cut through very quickly at the exterior
particularly at the front part.
Instead of making the cover of the pad of canvas throughout I make it of
a fabric woven with the threads in the direction of the warp of copper or other
suitable wire and in the direction of the weft of threads of fibrous material such
as used for making canvas.
Figure 1 shows an end view and Figure 2 a side elevation of an obturator fitted
with an elastic pad the covering of which is composed partly of metal wire and
partly of fibrous material as above described.
The covering is preferably made in two parts which somewhat overlap one
another and which are sewn together where they so overlap.
The interior I by preference fill with a mixture of asbestos and mutton suct such
as heretofore used for the filling of the ordinary elastic pads. When the covering
has been filled in with this composition the covering and the material within it are
moulded to form and compressed with heavy hydraulic pressure.
In the drawings A is the metallic head of the obturator B its stem which passes
back through the centre of the breech piece to its rear end. C is the elastic pad
which is inserted between the head A and the front face of the breech piece as is
usual. D is a metallic ring interposed as is also usual between the head A and the
outer portion of the front face of the elastic pad. E is the covering of fabric such
as above described by which the elastic pad C is enclosed.
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
1. Covering the elastic pad of obturators used for making a tight joint at the
brecch of breech loading ordnance of fabric composed of wire warp and fibrous weft
substantially as described.
2. The construction of the elastic pads of obturators substantially as described
and illustrated in the drawings annexed.