Improvements in Mounting and Sighting Ordnance.
Year: 1888

page_text: Date of Application, 3rd Dec., 1888
Complete Specification Left, 3rd Sept., 1889-Accepted, 5th Oct., 1889
PROVISIONAL SPECIFICATION.
Improvements in Mounting and Sighting Ordnance.
I, WILLIAM ANDERSON of 3 Whitehall Place in the City of Westminster Civil
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates especially to the mounting of guns in turrets.
The turret will usually contain a pair of guns.
Each gun is mounted on a carriage, capable of recoiling along a pair of slides the
forward ends of which are hinged to the turret. The rear ends of the slides are
supported by a pair of hydraulic cylinders fixed to the floor of the turret and fitted
with trunks and connecting rods, the outer ends of which are attached to the rear
ends of the slides. The forms of the slides is such that the hinges have the centre
lines of their pins intersecting the centre line of the gun, so that the recoil produces
no additional pressure on the elevating cylinders, beyond that momentarily due to
the weight of the gun moving to the rear.
The carriage is in two independent parts, one under each gun irunnion, and in each
part is a compressor cylinder, bored out to receive a hollow compressor ram passing
through a stuffing box. The inner end of the ram terminates in a piston head of
somewhat larger diameter and the cylinder is so formed that, for the greater part
of the stroke, the piston head will not touch its sides, but within a few inches of the
run-out position the cylinder is contracted, and the piston becomes an easy fit, so as
to imprison an annulus of water which will only be able to escape through the
windage space between the piston head and the cylinder, and will thus offer sufficient
The trunnion bearings,
resistance to check the gun, in running out, without shock.
The
are formed on the upper and forward ends of the carriage cylinders.
In the recoil the water in the compressor escapes through the hollow rams.
ends of these rams inside the cylinders are bored out to receive taper spindles.
The outer end of each spindle is fixed to the cylinder cover. These spindles are so
proportioned that at the commencement of recoil the water way down the hollow ram.
is quite free, but as the recoil proceeds, the spindle gradually narrows the aperture
and at last, when within a few inches of the end, closes it almost completely, the water
being able to make its way through the windage only.
The hollow rams are attached to the inner faces of the slides and communicate by
means of passages formed in the casting with a pair of storage cylinders fitted with
truuk rams the rear ends of which work watertight through U leathers. These
cylinders are bolted to the underside of the slides immediately under the gun and are
produced forward to accommodate two sets of disc springs of sufficient stiffness to
give the pressure necessary to run out the gun. The water from the compressor
passes through the hollow rains into the storage cylinders and in so doing drives out
their rams and further compresses the springs which have an initial tension given to
them sufficient to support the gun when run out.
The recoil of the gun is therefore taken up partly in compressing the storage
springs but chiefly in overcoming the resistance of the water squeezing its way
between the side of the aperture in the end of the recoil ram and the taper
spindle.
An automatic recoil valve may be introduced between the compressors and the
storage cylinders but preferably there will be no valves whatever connected with the

page_text: The gun is immoveably fixed in its carriage and it may therefore be trunnionless.
The elevation is accomplished by raising the rear ends of the slides by means of the
hydraulic cylinder fixed to the floor of the turret. When the guns are not in
action the rear ends of the slides rest on buffer blocks secured to the floor of the
turret.
The elevating cylinders may be actuated either by power or by hand. For the
former method a steam pump and accumulator is placed in any convenient position.
pipe takes the water from the accumulator to the centre of the turret up through
a swivelling pipe to the elevating valves placed at each side of the turret and com-
municating with each pair of the elevating cylinders by means of rods and levers
keyed on a rocking shaft crossing the turret just under the roof and brought within
reach of each look out turret. The exhaust pipe is taken from the elevating valve to
the centre of the turret down the swivel pipe and so back to the tank from which the
steam pump draws its supply.
For hand power elevating each pair of cylinders is connected to a double acting
hand pump placed either in the turret beside each gun, or in any other convenient
place on the ship. The pumps stand in a tank and may be connected with the pipes
from the accumulator in such a way that, by regulating certain cocks, either hand or
steam power may be used at a moments notice.
The central pivot pipe consists of a central passage to take the rod which controls
the turret training engine and of a passage for the pressure and exhaust pipes con-
nected with the elevating gear.
The loading is done by hand power. Brackets carrying a light pair of rails are
attached to the slides and carry a shot truck actuated either by tackle or by a winch
handle and train of wheels gearing into racks beside the rails. The truck carries a
shoot or guide long enough to enter the shot into the chamber and retires clear of
the recoil. By this means the gun may be loaded without always returning to a
fixed position. The shot is deposited in the truck by means of a crane or overhead
railway worked by hand and arranged to take from the entrance aperture of the
turret.
For ramming by hydraulic power a telescopic hydraulic rammer can be fixed to
the brackets which support the loading truck so that it will always follow the gun
and can be applied in whatever position the gun may be placed rendering it
unnecessary to alter the elevation or training for the sake of loading. The pressure
for working the rammer may be obtained from the central pivot pipe by means of a
flexible connection.
The sights are arranged so as to be adjusted from a pair of look out turrets placed
outside and above the roof of the main turret, and the gear is provided in duplicate,
so that both guns may be laid from either look out turret.
For this purpose a pair of rocking shafts, placed at right angles to the gun, are
affixed to the underside of the turret roof, each carrying two bars set parallel to the
axis of the respective guns they control. These bars are caused to vibrate isochro-
nously with the gun slides by means of connecting rods. At right angles to these
bars and in line with the centres of the respective shafts, the front sights are placed,
they are of sufficient length to come through the roof of the turret. At the opposite
end of each bar, a socket is secured parallel to the front sight, and of such length that
its upper end appears through the roof of the turret within reach of the captain of the
gun. Into this socket an ordinary tangent scale will fit, and be secured there in
the usual manner at whatever angle of elevation may be required. These sights
are a reproduction of the ordinary sights of the gun, but placed in a more convenient
position, and they can be regulated for drift, wind, and speed, in the usual manner.
In order to prevent any lateral play or vibration, the sockets carrying the sights, are
flat on their sides and pass through slotted guides in the roof.
A handle to control the training engine is provided to each look out turret, and
also the handles for actuating the elevating and depressing valves. These handles
may be provided with locking gear, so contrived that the working from one turret
cannot be interfered with from the other,

page_text: The captain of the gun stands in the look out turret on a small platform suspended
from the roof of the main turret, and capable of being raised or lowered by means of a
hand wheel at his side.
0
1
15
000
COMPLETE SPECIFICATION.
Improvements in Mounting and Sighting Ordnance.
I, WILLIAM ANDERSON of 3 Whiteball Place in the City of Westminster Civil
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 relates especially to the mounting of guns in turrets.
The turret will usually contain a pair of guns.
Each gun is mounted on a carriage capable of recoiling along a pair of slides the
forward ends of which are hinged to the turret. The rear ends of the slides are
supported by a pair of hydraulic cylinders fixed to the floor of the turret and fitted
with trunks and connecting rods the outer ends of which are attached to the rear ends
of the slides. The forms of the slides is such that the hinges have the centre lines of
their pins intersecting the centre lines of the gun so that the recoil produces no
additional pressure on the elevating cylinders beyond that momentarily due to the
weight of the gun moving to the rear.
The carriage is in two independent parts one under each gun trunnion and in each
part is a compressor cylinder bored out to receive a hollow compressor ram passing
through a stuffing box. The inner end of the ram terminates in a piston head of
somewhat larger diameter and the cylinder is so formed that for the greater part of the
stroke the piston head will not touch its sides but within a few inches of the run out
position the cylinder is contracted and the piston hecomes an easy fit so as to imprison
an annulus of water which will only be able to escape through the windage space
between the piston head and the cylinder and will thus offer sufficient resistance to
check the gun in running out without shock. The trunnion bearings are formed on
the upper and forward ends of the carriage cylinders.
In the recoil the water in the compressor escapes through the hollow rams. The
ends of these rams inside the cylinders are bored out to receive taper spindles.
The outer end of each spindle is fixed to the cylinder cover. These spindles are so
proportioned that at the commencement of recoil the water way down the hollow ram
is quite free but as the recoil proceeds the spindle gradually narrows the aperture and
at last when within a few inches of the end closes it almost completely the water being
able to make its way through the windage only.
The hollow rams are attached to the inner faces of the slides and communicate by
means of passages with the rear ends of a pair of storage cylinders fitted with rams
the rear ends of which carry U leathers to form a water tight joint. These cylinders
are bolted to the underside of the slides immediately under the gun and are produced
forward to accomodate two sets of disc springs of sufficient stiffness to give the
pressure necessary to run out the gun.
The water from the compressors passes
through the hollow rams into the storage cylinders and in so doing drives out their
rams and further compresses the springs which have an initial tension given to them
sufficient to support the gun when run out.
The recoil of the gun is therefore taken up partly in compressing the storage
springs but chiefly in overcoming the resistance of the water squeezing its way
between the side of the aperture in the end of the recoil ram and the taper
spindle.
An automatic recoil valve may be introduced between the compressors and the
storage cylinders but preferably there will be no valves whatever connected with the
compressors.

page_text: The gun is immoveably fixed in its carriage and it may therefore be trunnionless.
The elevation is accomplished by raising the rear ends of the slides by means of the
hydraulic cylinder fixed to the floor of the turret.
The elevating cylinders may be actuated either by power or by hand. For the
former method a steam pump and accumulator is placed in any convenient position.
A pipe takes the water from the accumulator to the centre of the turret up through a
swivelling pipe to the elevating valves placed at each side of the turret and communi-
cating with each pair of the elevating cylinders by means of rods and levers keyed on
a rocking shaft crossing the turret just under the roof and brought within reach of
each look out turret. The exhaust pipe is taken from the elevating valves to the centre
of the turret down the swivel pipe, and so back to the tank from which the steam
pump draws its supply.
In order that my said Invention may be fully understood and readily carried into
effect I will proceed to describe the drawings hereunto annexed.
Figure 1 is a vertical section through the centre of a turret containing a pair of
guns mounted in the above manner. Figure 2 is a plan view of one of the gun
mountings and part of the turret. Figure 3 is a cross section through the line a b
Figure 1.
A. A. are slides hinged at their forward end to the turret and at their rear end
secured one to the other by a cross bar A'. BB are carriages capable of sliding along
the slides A. C is the gun.
Care trunnions or projections standing out from its
sides and secured to the carriages B. It will be seen that the forward ends of the
slides are curved upwards so that the centre lines of the pins A' on which the slides
turn pass through the centre line of the gun as above mentioned. B'B' are compressor
cylinders one formed with each carriage B. D D are hollow rams working in the
cylinders and fixed at their rear ends to the rear ends of the slides. B² are tapering
spindles secured to the front ends of the compressor cylinders and entering into the
open forward ends of the rams. E are the storage cylinders. F are pistons fitting
therein. GG are series of dished springs contained in the cylinders E and bearing
against the pistons F. H H are passages from the rear ends of the hollow rams to the
rear ends of the storage cylinders. I see Figure 3 is a passage from the rear end of
one storage cylinder to the other. J J are hydraulic cylinders fixed to the floor of the
turret, and each fitted with a trunk ram Ji from the bottom of which a rod passes
to the underside of one or other of the slides A. By these the rear ends of the
slides A can be raised or lowered as required. K is a truck to be used in loading, it
runs on an arm L which extends from the rear ends of the slides. The truck is for
carrying the shot into position to be thrust forward into the breech end of the gun
when the breech has been opened. The shot may be deposited on to the truck by
means of elevating pulleys and an overhead railway M as shewn. By this means the
gun may be loaded without having always to be brought back to a fixed position.
N is the revolving turret within which the mounting is contained.
Having now particularly described and ascertained the nature of my said In-
vention and in what manner the same is to be performed 1 declare that what I
claim is.
1. The combination of the revolving turret, the gun, the gun carriages, the slidės
upon which they slide, and which have pivots at their forward end which are embraced
by and can turn in bearings fixed to the turret and the mechanism for checking the
recoil of the carriages upon the slides; such mechanism consisting of hydraulic
cylinders upon the carriages and hollow rams and spring storage cylinders upon
the slides.
2. The combination of the revolving turret the gun, the gun carriages, the slides
upon which they slide-mechanism for checking the recoil of the carriages upon the
slides the arms projecting backwards from the slides the truck capable of being

page_text: moved along the arms to convey projectiles to the breech end of the gun and the
overhead railway for placing projectiles on to the truck.
3. The combination of the gun, the gun carriages, the slides upon which the
carriages slide-their pivots at their forward ends having their central line in a plane
passing through the centre of the gun-the hydraulic cylinders supporting the rear
ends of the slides-the compressor cylinder ou each carriage the hollow ram working
therein and fixed at its rear end to the slide the tapering spindle carried by the front
end of the compressor cylinder and entering the front end of the hollow ram-the
storage cylinder also carried by the slide at one side of the compressor cylinder-
the piston of the storage cylinder pressed against by a series of dished springs and the
passage connecting the rear end of the storage cylinder with the rear end of the com-
pressor cylinder.

page_text: Date of Application, 3rd Dec., 1888
Complete Specification Left. 3rd Sept. 1889-Accepted. 5th Oct., 1889
PROVISIONAL SPECIFICATION.
Improvements in Mounting and Sighting Ordnance.
I, WILLIAM ANDERSON of 3 Whitehall Place in the City of Westminster Civil
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates especially to the mounting of guns in turrets.
The turret will usually contain a pair of guns.
Each gun is mounted on a carriage, capable of recoiling along a pair of slides the
forward ends of which are hinged to the turret. The rear ends of the slides are
supported by a pair of hydraulic cylinders fixed to the floor of the turret and fitted
with trunks and connecting rods, the outer ends of which are attached to the rear
ends of the slides. The forms of the slides is such that the hinges have the centre
lines of their pins intersecting the centre line of the gun, so that the recoil produces
no additional pressure on the elevating cylinders, beyond that momentarily due to
the weight of the gun moving to the rear.
The carriage is in two independent parts, one under each gun trunnion, and in cach
part is a compressor cylinder, bored out to receive a hollow compressor ram passing
through a stuffing box. The inner end of the ram terminates in a piston head of
somewhat larger diameter and the cylinder is so formed that, for the greater part
of the stroke, the piston head will not touch its sides, but within a few inches of the
run-out position the cylinder is contracted, and the piston becomes an easy fit, so as
to imprison an annulus of water which will only be able to escape through the
windage space between the piston head and the cylinder, and will thus offer sufficient
resistance to check the gun, in running out, without shock. The trunnion bearings,
are formed on the upper and forward ends of the carriage cylinders.
In the recoil the water in the compressor escapes through the hollow rams. The
ends of these rams inside the cylinders are bored out to receive taper spindles.
The outer end of each spindle is fixed to the cylinder cover. These spindles are so
proportioned that at the commencement of recoil the water way down the hollow ram
is quite free, but as the recoil proceeds, the spindle gradually narrows the aperture
and at last, when within a few inches of the end, closes it almost completely, the water
being able to make its way through the windage only.
The hollow rams are attached to the inner faces of the slides and communicate by
means of passages formed in the casting with a pair of storage cylinders fitted with
trunk rams the rear ends of which work watertight through U leathers. These
cylinders are bolted to the underside of the slides immediately under the gun and are
produced forward to accommodate two sets of disc springs of sufficient stiffness to
give the pressure necessary to run out the gun. The water from the compressor
passes through the hollow rams into the storage cylinders and in so doing drives out
their rams and further compresses the springs which have an initial tension given to
them sufficient to support the gun when run out.
The recoil of the gun is therefore taken up partly in compressing the storage
springs but chiefly in overcoming the resistance of the water squeezing its way
between the side of the aperture in the end of the recoil ram and the taper
spindle.
An automatic recoil valve may be introduced between the compressors and the
storage cylinders but preferably there will be no valves whatever connected with the
compressors.
The gun is immoveably fixed in its carriage and it may therefore be trunnionless.
The elevation is accomplished by raising the rear ends of the slides by means of the
hydraulic cylinder fixed to the floor of the turret. When the guns are not in
action the rear ends of the slides rest on buffer blocks secured to the floor of the
turret.

page_text: The elevating cylinders may be actuated either by power or by hand. For the
former method a steam pump and accumulator is placed in any convenient position.
A pipe takes the water from the accumulator to the centre of the turret up through
a swivelling pipe to the elevating valves placed at each side of the turret and com-
municating with each pair of the elevating cylinders by means of rods and levers
keyed on a rocking shaft crossing the turret just under the roof and brought, within
reach of each look out turret. The exhaust pipe is taken from the elevating valve to
the centre of the turret down the swivel pipe and so back to the tank from which the
steam pump draws its supply.
For hand power elevating each pair of cylinders is connected to a double acting
hand pump placed either in the turret beside each gun, or in any other convenient
place on the ship. The pumps stand in a tank and may be connected with the pipes
from the accumulator in such a way that, by regulating certain cocks, either hand or
steam power may be used at a moments notice.
The central pivot pipe consists of a central passage to take the rod which controls
the turret training engine and of a passage for the pressure and exhaust pipes con-
nected with the elevating gear.
The loading is done by hand power. Brackets carrying a light pair of rails are
attached to the slides and carry a shot truck actuated either by tackle or by a winch
handle and train of wheels gearing into racks beside the rails. The truck carries a
shoot or guide long enough to enter the shot into the chamber and retires clear of
the recoil. By this means the gun may be loaded without always returning to a
fixed position. The shot is deposited in the truck by means of a crane or overhead
railway worked by hand and arranged to take from the entranco aperture of the
turret.
For ramming by hydraulic power a telescopic hydraulic rammer can be fixed to
the brackets which support the loading truck so that it will always follow the gun
and can be applied in whatever position the gun may be placed rendering it
unnecessary to alter the elevation or training for the sake of loading. The pressure
for working the rammer may be obtained from the central pivot pipe by means of a
flexible connection.
The sights are arranged so as to be adjusted from a pair of look out turrets placed
outside and above the roof of the main turret, and the gear is provided in duplicate,
so that both guns may be laid from either look out' turret.
For this purpose a pair of rocking shafts, placed at right angles to the gun, are
affixed to the underside of the turret roof, each carrying two bars set parallel to the
axis of the respective guns they control. These bars are caused to vibrate isochro
nously with the gun slides by means of connecting rods. At right angles to these
bars and in line with the centres of the respective shafts, the front sights are placed,
they are of sufficient length to come through the roof of the turret. At the opposite
end of each bar, a socket is secured parallel to the front sight, and of such length that
its upper end appears through the roof of the turret within reach of the captain of the
gun. Into this socket an ordinary tangent scale will fit, and be secured there in
the usual manner at whatever angle of elevation may be required.
These sights
are a reproduction of the ordinary sights of the gun, but placed in a more convenient
position, and they can be regulated for drift, wind, and speed, in the usual manner.
In order to prevent any lateral play or vibration, the sockets carrying the sights, are
flat on their sides and pass through slotted guides in the roof.
A handle to control the training engine is provided to each look out turret, and
also the handles for actuating the elevating and depressing valves. These handles
may be provided with locking gear, so contrived that the working from one turret
.cannot be interfered with from the other.
The captain of the gun stands in the look out turret on a small platform suspended
from the roof of the main turret, and capable of being raised or lowered by means of a
hand wheel at his side.
Dated thin 2nd
&TV
1
1000

page_text: CUMI DEIE STDUIR ALION
Improvements in Mounting and Sighting Ordnance.
I, WILLIAM ANDERSON of 3 Whitehall Place in the City of Westminster Civil
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 relates especially to the mounting of guns in turrets.
The turret will usually contain a pair of guns.
Each gun is mounted on a carriage capable of recoiling along a pair of slides the
forward ends of which are hinged to the turret. The rear ends of the slides are
supported by a pair of hydraulic cylinders fixed to the floor of the turret and fitted
with trunks and connecting rods the outer ends of which are attached to the rear ends
of the slides. The forms of the slides is such that the hinges have the centre lines of
their pins intersecting the centre lines of the gun so that the recoil produces no
additional pressure on the elevating cylinders beyond that momentarily due to the
weight of the gun moving to the rear.
The carriage is in two independent parts one under each gun trunnion and in each
part is a compressor cylinder bored out to receive a hollow compressor ram passing
through a stuffing box. The inner end of the ram terminates in a piston head of
somewhat larger diameter and the cylinder is so formed that for the greater part of the
stroke the piston head will not touch its sides but within a few inches of the run out
position the cylinder is contracted and the piston becomes an easy fit so as to imprison
an annulus of water which will only be able to escape through the windage space
between the piston head and the cylinder and will thus offer sufficient resistance to
check the gun in running out without shock. The trunnion bearings are formed on
the upper and forward ends of the carriage cylinders.
The
In the recoil the water in the compressor escapes through the hollow rams.
ends of these rams inside the cylinders are bored out to receive taper spindles.
The outer end of each spindle is fixed to the cylinder cover. These spindles are so
proportioned that at the commencement of recoil the water way down the hollow ram
is quite free but as the recoil proceeds the spindle gradually narrows the aperture and
at last when within a few inches of the end closes it almost completely the water being
able to make its way through the windage only.
The hollow rams are attached to the inner faces of the slides and communicate by
means of passages with the rear ends of a pair of storage cylinders fitted with rams
the rear ends of which carry U leathers to form a water tight joint. These cylinders
are bolted to the underside of the slides immediately under the gun and are produced
forward to accomodate two sets of disc springs of sufficient stiffness to give the
pressure necessary to run out the gun. The water from the compressors passes
through the hollow rams into the storage cylinders and in so doing drives out their
rams and further compresses the springs which bave an initial tension given to them
sufficient to support the gun when run out.
The recoil of the gun is therefore taken up partly in compressing the storage
springs but chiefly in overcoming the resistance of the water squeezing its way
between the side of the aperture in the end of the recoil ran and the taper
spindle.
An automatic recoil valve may be introduced between the compressors and the
storage cylinders but preferably there will be no valves whatever connected with the
compressors.
The gun is immoveably fixed in its carriage and it may therefore be trunnionless.
The elevation is accomplished by raising the rear ends of the slides by means of the
hydraulic cylinder fixed to the floor of the turret.
The elevating cylinders may be actuated either by power or by hand. For the
former method a steam pump and accumulator is placed in any convenient position.
A pipe takes the water from the accumulator to the centre of the turret up through a

page_text: swivelling pipe to the elevating valves placed at each side of the turret and communi-
cating with each pair of the elevating cylinders by means of rods and levers keyed on
a rocking shaft crossing the turret just under the roof and brought within reach of
each look out turret. The exhaust pipe is taken from the elevating valves to the centre
of the turret down the swivel pipe, and so back to the tank from which the steam-
pump draws its supply.
In order that my 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 vertical section through the centre of a turret containing a pair of
guns mounted in the above manner. Figure 2 is a plan view of one of the gun
mountings and part of the turret. Figure 3 is a cross section through the line ab
Figure 1.
A. A. are slides hinged at their forward end to the turret and at their rear end
secured one to the other by a cross bar A'. B B are carriages capable of sliding along
the slides A. C is the gun. C' are trunnions or projections standing out from its
sides and secured to the carriages B. It will be seen that the forward ends of the
slides are curved upwards so that the centre lines of the pins A² on which the slides
turn pass through the centre line of the gun as above mentioned. B'B' are compressor
cylinders one formed with each carriage B. DD are hollow rams working in the
cylinders and fixed at their rear ends to the rear ends of the slides. B³ are tapering
spindles secured to the front ends of the compressor cylinders and entering into the
open forward ends of the rams. E are the storage cylinders. F are pistons fitting
therein. GG are series of dished springs contained in the cylinders E and bearing
against the pistons F. HH are passages from the rear ends of the hollow rams to the
rear ends of the storage cylinders. I see Figure 3 is a passage from the rear end of
one storage cylinder to the other. JJ are hydraulic cylinders fixed to the floor of the
turret, and each fitted with a trunk ram from the bottom of which a rod passes
to the underside of one or other of the slides A. By these the rear ends of the
slides A can be raised or lowered as required. K is a truck to be used in loading, it
runs on an arm L which extends from the rear ends of the slides. The truck is for
carrying the shot into position to be thrust forward into the breech end of the gun
when the breech has been opened. The shot may be deposited on to the truck by
means of elevating pulleys and an overhead railway M as shown. By this means the
gun may be loaded without having always to be brought back to a fixed position.
N is the revolving turret within which the mounting is contained.
Having now particularly described and ascertained the nature of my said In-
vention and in what manner the same is to be performed I declare that what I
claim is.
1. The combination of the revolving turret, the gun, the gun carriages, the slides
upon which they slide, and the mechanism for checking the recoil of the carriages the
slides; such mechanism consisting of hydraulic cylinders upon the carriages and hollow
rams and spring storage cylinders upon the slides.
.
2. The combination of the revolving turret the gun, the gun carriages, the slides
upon which they slide-mechanism for checking the recoil of the carriages upon the
slides the arms projecting backwards from the slides the truck capable of being
moved along the arms to convey projectiles to the breech end of the gun and the
overhead railway for placing projectiles on to the truck.
3. The combination of the gun, the gun carriages, the slides upon which the
carriages slide their pivots at their forward ends having their central line in a plane
passing through the centre of the gun-the hydraulic cylinders supporting the rear
ends of the slides-the compressor cylinder on each carriage the hollow ram working
therein and fixed at its rear end to the slide the tapering spindle carried by the front
"end of the compressor cylinder and entering the front end of the hollow ram-the

page_text: storage cylinder also carried by the slide at one side of the compressor cylinder-
the piston of the storage cylinder pressed against by a series of dished springs and the
passage connecting the rear end of the storage cylinder with the rear end of the com-
pressor cylinder.