Improvements in Apparatus for Working Guns.
Year: 1891

page_text: Date of Application, 2nd May, 1891
Complete Specification Left, 30th Jan., 1892-Accepted, 9th Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Working Guns.
I, ANDREW NOBLE Companion of the Bath late Captain in the Royal Artillery,
of Jesmonddene House, Newcastle-upon-Tyne, Manufacturing Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention has for its object improvements in apparatus for working guns.
In the Specification of a Patent granted to me No. 15396 in the year 1888
I have described pneumatic apparatus for working the rammer for ramming the
shot. As is there described air is stored under heavy pressure in portable receivers
and each time that the rammer is required to operate a small quantity of this air
is allowed to pass from the receiver into a long cylinder. The cylinder contains a
piston, and the piston is on a piston rod provided with a head to ram the shot.
My present improvement relates to the valve mechanism by which in apparatus of
this class a suitable quantity of air may be admitted to the cylinder, with greater
regularity than heretofore. I employ as heretofore a conical valve which is held
to its seat by the air pressure and is also furnished with a light spring tending to
close it to its seat. The stem of the valve passes out from the valve case by a
gland and it is provided with a head. A hammer is arranged to strike upon the
head of the valve. This hammer is mounted upon an axis and is drawn down by a
strong spring. When it is required momentarily to open the valve, it is effected
by turning a hand wheel. Upon the axis of the wheel there is an arm with a cam
projection and this when the wheel is turned comes against a corresponding
projection upon the hammer arm. In this way the hammer is raised. The axis of
the hand wheel is not concentric with that of the hammer and when the hammer is
sufficiently displaced the projections escape past each other. The hammer then
falls upon the head of the valve with more or less energy according to the adjust-
ment of the spring which actuates it and the valve is forced from its seat just to the
extent required to allow sufficient air to pass.
Dated this 2nd day of Mov 1901
CARPMAEL & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Working Guns.
I, ANDREW NOBLE, Companion of the Bath, late Captain in the Royal
Artillery, of Jesmonddene House, Newcastle-upon-Tync, Manufacturing 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 :-
This invention has for its object improvements in apparatus for working guns.
In the Specification of a Patent granted to me No. 15396 in the year 1888
I have described pneumatic apparatus for working the rammer for ramming
the shot. As is there described air is stored under heavy pressure in portable
receivers and each time that the rammer is required to operate a small quantity of
this air is allowed to pass from the receiver into a long cylinder. The cylinder
contains a piston, and the piston is on a piston rod provided with a head to ram the
shot.
My present improvement relates to the valve mechanism by which in apparatus
of this class a suitable quantity of air may be admitted to the cylinder, with

page_text: greater regularity than heretofore. 1 employ as heretofore a conical valve which
is held to its seat by the air pressure and is also furnished with a light spring
tending to close it to its seat. The stem of the valve passes out from the valve
case by a gland and it is provided with a head. A. hammer is arranged to strike
upon the head of the valve. This hammer is mounted upon an axis and is drawn
down by a strong spring. When it is required momentarily to open the valve,
it is effected by turning a hand wheel. Upon the axis of the wheel there is an
arm with a cam projection and this when the wheel is turned comes against a
corresponding projection upon the hammer arm. In this way the hammer is raised.
The axis of the hand wheel is not concentric with that of the hammer and when
the hammer is sufficiently displaced the projections escape past each other. The
hammer then falls upon the head of the valve with more or less energy according
to the adjustment of the spring which actuates it and the valve is forced from its
seat just to the extent required to allow sufficient air to pass.
In order that the said invention may be fully understood and readily carried
into effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a front elevation and Figure 2 is a side elevation partly in section
and with parts removed of apparatus arranged in accordance with this invention.
a is a valve chamber which is in direct communication with a reservoir of
compressed air. is a passage leading to a cylinder in which is a piston for
working a raminer or it might be for giving motion to some other mechanism used
in working a gun. c is a valve controlling the passage of air from a to b. d is a
head fixed on the stem of the valve. e is a light spring pressing upon the head
and serving to raise the valve to its seat after it has been displaced. is a hammer,
it is mounted upon an axis g. is a strong spring, it is made fast at its lower end
to the frame and at its other extremity is connected with an arm which forms
part of the hammer. is a hand wheel, mounted on an axis on which also is
a crank arm carrying a projection 2. is a corresponding projection on the
hammer.
When the wheel is turned the hammer is raised by the thrust of the projection ²
upon the projection f until the hammer head reaches the position indicated by the
dotted lines. Then the projections 2 and 2 pass each other; the hammer falls, and
displaces the valve from its seat, it may be to the position shewn by the full lines
in Figure 2. Immediately the spring e operates to again close the valve and the
hammer remains in the position indicated by dotted lines at f* until the wheel is
again turned.
By this arrangement uniformity in the action of the rammer or mechanism
operated by the compressed air is sufficiently ensured.
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. In apparatus in which compressed air (or aeriform fluid) is employed to
actuate the rammer or other part of the mechanism for working the gun, so
arranging the said apparatus that the air valve is momentarily opened by the
blow of a hammer propelled by a spring operating thereon with a regulated
force.
2. Apparatus substantially as described for operating the rammer or other part
of the mechanism for working guns.
Dated th: 104 3
Lanna 1905