Improvements in Muzzle-shutters for Ordnance.
Year: 1890

page_text: Date of Application, 22nd Feb., 1890
Complete Specification Left, 22nd Dec., 1890-Accepted, 21st Feb., 1891
PROVISIONAL SPECIFICATION.
Improvements in Muzzle-shutters for Ordnance.
1, JOSEPH TURNER, of Victoria House, 327, Barking Road, Plaistow, Essex
Engineer, do hereby declare the nature of this invention to be as follows:-
The object of this invention is to simplify the construction of muzzle shutters for
ordnance whereby the efficiency will be greatly increased, and to prevent damp
from entering the guns, therefore preventing rusting or corrosion in the chamber.
This invention relates namely to 2 flaps of metal or other material connected to a
long rod with suitable disc springs, or other suitable arrangement for securing
the same.
I do not bind myself to make these muzzle shutters in any particular shape or
form so that I use the principle stated herein.
T1
JOSEPH TURNER.
COMPLETE SPECIFICATION.
Improvements in Muzzle-shutters for Ordnance.
I, JOSEPH TURNER, of Victoria House, 327, Barking Road, Essex, Engineer, 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 :-
The object of this invention is to simplify the construction of muzzle shutters for
ordnance whereby the efficiency will be greatly increased, and to prevent damp
from entering the guns therefore preventing rusting or corrosion in the chamber,
this invention relates namely to 2 flaps of metal or other material, packed in their
joints and on their faces with an air tight material which flaps are connected on a
long rod with suitable disc, spring or springs or other suitable arrangement for
securing the same from the breech end.
Referring to the accompanying drawing
Fig. A shows the apparatus being passed through the gun.
Fig. B shows the flaps of the shutter through the gun with the flaps down
or open.
Fig. C shows the shutter fixed in position.
Fig. X shows a modification in which the springs are replaced by a screw.
Like letters indicate the same parts in all the figures.
D is the rod, F are discs to support it in the gun, G is a spring to prevent the
rods from turning in the wrong direction, H is a spring with a disc at each end, and
when the rod J is lifted from the position shewn in Fig. A the spring extends and
brings the disc F1 against the set-off of the gun chamber and brings the flaps in
proper position tight against the muzzle of the gun.
In Figure X the spring H is replaced by a screw K operated by a nut E which
is provided with a handle for turning it.
1 do not bind myself to make these apparatus or muzzle shutters in any
particular shape or form so that I use the principle herein stated.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The spring G and rod to keep the flaps from turning in the wrong direction.
[Price 6d1

page_text: 2. The spring H and rod with catch J as shewn in Fig. A.
3. The nut on Fig. X to secure the shutters and the disc F¹ in the set-off of
chamber in large ordnance where spring H would not suit.
001 Dhan 1900
JOSEPH TURNER.