Improvements in and relating to Manoeuvered Torpedoes.
Year: 1886

page_text: Improvements in and relating to Manoeuvered Torpedoes.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings, in the County of Middlesex 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 to submarine torpedoes of the type that is controlled in its
movement from a point without the torpedo and connected with it by an electric
conductor.
The said invention consists in the devices for submerging the torpedo to ensure
its safety from projectiles; in the means for keeping the torpedo on an even keel;
in the details of the construction of the engine by which the torpedo is moved; in
the devices for securing safety in handling the torpedo when charged; in the
automatic device for mixing the chemicals used to heat and expand the gas used as
a motive power; and in details of the construction and combination of the several
parts of the torpedo and its contents, as more particularly hereinafter described.
In the accompanying, drawings
Figure 1 is a side view of my submarine torpedo illustrating its position in
the water.
Figures 2 and 3 are views in longitudinal vertical central section of the torpedo
and the float, showing the devices in the several compartments from bow to stern.
Figure 4 is a plan view on enlarged scale, of the several valves and the electrical
apparatus in the bow compartment next back of the magazine; the casing or shell
of the torpedo being cut away in horizontal section.
Figure 5 is a view on enlarged scale, in central longitudinal section, of the
cylinder for operating the throttle valve.
Figure 6 is a view on enlarged scale in central section of the throttle valve.
Figure 7 is a view on enlarged scale in central vertical longitudinal section of one
of the gas heating and expanding chambers.
Figure 8 is a view, on plane x, x of Figure 7, in cross section of the same.
chamber,
Figure 9 is a detail top or plan view of the engine used to propel the torpedo.
D10 271

page_text: Figure 10 is a detail view in cross-section of the torpedo and engine on a plane
denoted by the line x, x¹ in Figure 9.
Figure 11 is a detail end view of the cylinder head and piston rods.
Figure 12 is a view in horizontal central section of the engine.
Figure 13 is a detail view of the end of one of the piston rods showing the
anti-friction roller.
Figure 14 is a detail view in section on plane x, x of Figure 13, through the
anti-friction roller.
Figure 15 is a detail end view of one of the rotary valves.
Figure 16 is a detail, view in central cross-section of the rotary valve.
Figure 17 is a plan view of the propeller shaft, the steering cylinder and the
electrical apparatus showing the relative arrangement of these parts in the
compartment of the torpedo.
Figure 18 is a view, on enlarged scale, in central vertical section through
the steering cylinder, on plane x, x of Figure 17.
Figure 19 is a view in cross-section of the torpedo and shaft through the rudder
post, on plane x, x of Figure 17.
Figure 20 is a detail side view, on enlarged scale, of the main valve of the
storage tank or reservoir of liquefied gas.
Figure 21 is a top view of the same.
Figure 22 is a view in cross-section of the same, on plane denoted by line z, z of
Figure 21.
Figure 23 is a view in longitudinal section of the valve on plane denoted by
line 2, 2 of Figure 20.
Figure 24 is a detail view in central longitudinal section of the pressure
reducing valve.
Figure 25 is a view in cross-section of the same on plane z³, z³ of Figure 24.
Figure 26 is a detail view in longitudinal section of the cut-off valve of the
heating.chamber.
Figure 27 is a top view of the same.
Figure 28 is a diagram view of the firing and safety devices and, electrical
connections with the local battery.
Figure 29 is a diagram view of the electro magnet relay and connections of the
valve operating apparatus.
C
Figure 30 is a detail view in central longitudinal section of the strainer on the
pipe for liquid passing from the reservoir.
Figure 31 is a detail view in central section of the outer end of the exhaust pipe
showing the stop valve that prevents the ingress of water.
Figure 32 is a detail view of the back of the valve stem and in cross-section of
the pipe.
Figure 33 is a detail view.in longitudinal section of the reel chamber of the
torpedo showing the reel also in section.
Figure 34 is a view in cross-section of the reel chamber and reel.
Figure 35 is a detail side view of the reel and coil with the device for
unwinding the cable.
Figure 36 is a detail end view of the reel showing the flyer.
Figure 37 is a view in cross-section of the strainer.
Figure 38 is a plan view of the drag on the bow of the float.
Figure 39 is a view on enlarged scale in central vertical section of the drag.
Figures 40 and 41 are detail views in section of the plug used to close the hand
hole in the lime tube.
Like letters of reference indicate corresponding parts throughout the drawing.
In general outline the torpedo is circular as to cross-section and it tapers
toward the bow and stern on lines preferably curved from end to end of the torpedo,
the ends being sharply pointed, and the hull is made of any suitable material
as iron, steel or copper, the latter being preferable. The interior of the torpedo is

page_text: divided by suitable bulk-heads into a number of chambers or compartments viz*
A the bow compartment or magazine which contains the charge of explosive
material or compound; B the next chamber in order towards the stern, which
contains a local battery for firing the charge, a safety device in this battery circuit
that prevents the accidental firing of the charge, the valves for starting and
stopping the engine, and the electrical devices for operating the valves; C the next
compartment which contains a gas heating and expanding chamber;-D which
contains the storage reservoir of compressed, liquefied carbonic-acid gas; E another
gas heating and expanding chamber; F the cable chamber which contains the coil
of insulated wire by means of which the torpedo is held and guided from the firing
point; and G which contains the engine, the steering device and the electrical
apparatus for controlling the movements of the rudder.
'
The motive power used in this torpedo is a gas stored in a liquid form under
great pressure, in the flask or reservoir D and from there the liquid is conducted
by pipes through heating and expanding chambers to the engine G' that drives
the propeller G2 that is fast to the hollow shaft G³ which extends beyond the stern
of the torpedo in line with the axis. The special means for conducting the liquid
from the reservoir to the expanding chamber so as to prevent freezing is sub-
stantially the same as that shown and described in the specification of United
States Patent granted to Haight and dated May 9th 1882 N° 257,694.
The liquid is conveyed from the flask D¹ by the pipe D' through the strainer d
to the throttle valve d¹; thence to the coil in the heating and expanding
chamber C; thence back through a pipe passing through the open pipe D' and
through the flask to the coil of pipe in the other heating chamber E¹, where it is
further expanded into gaseous form and finally into the induct or supply pipes of
the engine Gl.
The engine consists of a series of cylinders grouped about. a central hollow
shaft G³ that bears the cam block G, having in its surface a curved cam groove Go.
Into this cam groove the pins G project and bear against the faces of the cam in
such manner and position that the rectilinear reciprocating movement of the several
pistons and rods is translated into a continued rotation of the cam block, and of
the hollow shaft that bears the propeller.
}
The form of engine herein described and shown is arranged for use in a sub-
marine torpedo, for which purpose it is particularly adapted. In the accompanying
drawings G7 denotes one of the cylinders, a group of which are preferably formed
in a single casting, and arranged about a common centre with their axes parallel ;
GB the back head of the group of cylinders, and G the front head, both secured to
the flanged edge of the group in any ordinary manner, as by nuts and bolts;
Go a piston; G the piston rod projecting through an opening in the front
head that has the usual stuffing-box and packing; and G2 a cross-head that is
supported on the guide rods or ways G¹³.
As shown the cross-head G¹ carries the pin or lug G on which is held a
roller G4, that is preferably-provided with any suitable form of anti-friction device,
as a series of small rollers, as shown in Figures 13 and 14, arranged between the
inner edge of the roller and the pin.
The rollers are secured to the several cross-heads in such positions that they lie
in the cam groove G³ that is cut in the cam block G*
This groove is so shaped that the reciprocating movement of the piston causes
the block to rotate by the contact of the roller with the face of the cam, and this
cam-block is securely keyed to the central shaft G³, and also to the valve-stem G¹³
which extends through an opening in the centre of the cylinder-body that forms
the steam-chest G16.
The valve g is made in the shape of a hollow disc with the centrally projecting
hubs g¹ which fit closely upon the valve-stem, and is secured to it by means of a
key. There are two of these valves, one at each end of the group of cylinders,
and they are seated in a recess formed between the end of the cylinder-body and
each cylinder-head, and are held between. the shoulders g on the outside of the

page_text: valve-stem and the inner side of the cylinder-heads; this serves to prevent any
endwise play of the stem.
Each valve is provided with the inlet ports g³ and the outlet port g the former
being made in the shape of curved slots through the walls of the valve-body, upon
one side of the centre, while the outlet port is in the form of a curved slot through
the walls and a recess in the centre of the valve which is arranged to register with
the opening g' through the wall of the hollow valve-stem G15 as shown in
Figure 12. The inlet ports g³ of the valve which lie nearest the centre, open into
the steam-chest 10, while the outer ones connect with the steam-ways, which are
passages formed in the cylinder-heads, and which open, into the cylinders at their
ends. The several valves are so arranged that the steam or other vapour, the
expansion of which forms the motive power, is taken into or exhausted from the
cylinders in pairs that are arranged diametrically opposite each other, so that
while the piston of one side is on the return stroke, that of the opposite side is
beginning a stroke.
This arrangement of the valves and ports is clearly shewn in Figure 12, and the
direction of the currents of expanding steam or other motive force is indicated by
the several arrows in the same view.
The cam-block G is keyed to both the valve-stem G15 and the shaft G³ and
forms a coupling for these parts that meet within the block; the shaft in this
instance being hollow to form an outlet for the exhaust which enters the hollow
valve-stem G and passes through the shaft out of the stern of the boat.
It is evident that the relative functions of the ports as inlets and outlets may be
reversed by introducing the supply of steam or its equivalent motive power
through the hollow stem and using the present inlet tubes g as outlets for the
exhaust; and it is also possible without departing from my invention, to construct
the engine with the shaft and valve-stem fixed against rotation, and allow the
group of cylinders to be revolved by the thrust of the pistons against the
curve cams.
The strainer d is made by plugging the end of the pipe D2 at any desired point
between the flask and the throttle valve, forming a number of fine perforations d³
through the wall of the pipe near the end, and enclosing this perforated part in a
larger pipe forming the chamber d' that is closed tightly about the pipe D' at one
end of the chamber while the other opens into the continuation of the pipe D³ that
leads to the engine, see Figure 30.
The gas in the upper part of the reservoir or flask D¹ is conveyed by the pipe H
to the throttle controlling cylinder I and also to the steering cylinder J, its supply
to the former being controlled by a slide valve i connected by bell crank levers to
the armature B2 of the electro-magnet B₁ and to the cylinder J by a slide valve j
connected by similar bell crank levers to the armature k of an electro-magnet K.
The gas heating and expanding chambers and their contained mechanism are
similar in all respects, and a description of the chamber E¹ and its mechanism will
apply to both. The chamber E¹ is a closed cylinder of any suitable metal, as
copper, made in two or more parts bolted or otherwise fastened together, with
openings through the end walls for the passage of the several pipes of the gas
circulating system. The pipe D' is formed into a coil D³ within the chamber E¹ in
any desired and convenient form, and is more or less immersed in the liquid,
sulphuric acid and water, that forms part of the gas heating mixture. To the wall
of the chamber is attached the lime tube E' formed in two or more segments
hinged together, so that when opened its contents will be dropped into the solution
in the chamber. The parts of the tube are held closed by the bolt e that has
several arms e¹ each passing through the holes in two or more lugs that are fast to
each of the body parts of the tube, and the latter is sprung open, when the bolt
is withdrawn, by the recoil of the flat springs e² that are placed within the tube
and curved by the closing of the parts of the latter, see Figures 7 and 8. This
tube is filled with lime broken into pieces of convenient size to aid its ready
mixing with the acid solution, and the tube is opened to dump, the lime by the

page_text: pressure of the gas from the the tube upon the piston E³ that is movable in.
the cylinder E' fast to the end wall of the chamber E, the piston being fast to the
outer end of the bolt e.
In order to reduce the pressure of the gas formed by the heating mixture the.
chambers C and E are provided with a safety valve e on the pipe e leading from
the opening e' in the wall of the chamber, and having a vent through the shell of
the torpedo in any convenient place, as through the brace and standard m of the
float as shewn in Figure 2. This safety valve is of ordinary construction, except
as to the packing which is formed by a volume of oil held in an extension of the
valve body, and in this oil the valve stem and the spring are submerged, thus
preventing corrosion of the spring.
The cable which forms the connection between the torpedo and the station from
which it is directed is (in the arrangement of parts as herein described) made up
of two insulated wires, one serving as the conductor, for operating the valves of
the starting and stopping device, and the other being used to operate the steering
or guiding devices which are shewn in detail in Figures 17, 18 and 19. One of
these wires K' is connected to a binding post K of the relay K3 which is connected
to the electro-magnet K, and the other end of this wire is connected to a pole
changer at the station, so that the armature of the magnet K can be moved to
either pole at will by the movement of a key at the pole changer.
As the armature tilts to one side the slide valve of the cylinder J is moved so
as to admit the motive power, (the compressed gas) into the end of the cylinder
through the port j¹ and this forces the piston J₁ forward moving the rudder Ja to
starboard by means of the connecting rod J³ that is pivotted to one arm of the
frame J of the rudder post J. This post is stepped in a shoe fast to the bottom
of the torpedo, is widened in the shape of a frame to avoid the bollow shaft G³,
projects through the hull at an opening closely protected against leakage by an
ordinary packing box, and supports the rudder upon the upper side of the torpedo.
As soon as this valve j is opened as above described, the gas not only flows into
the cylinder but passes from it by means of the pipe H₁ that leads to the bolt
tripping cylinders of the lime tubes of the several gas heating chambers and by
its pressure at once draws the bolts e¹ and dumps the lime.
By this arrangement of the parts this important operation is performed at will
and quickly and is a feature of our invention.
At a convenient point in the line of this pipe H is placed a cut off valve H
having the inlet h, the passage h¹ to the pipe 2 that is secured in a socket in one
side of the valve body and branches right and left into the pipes h, h³ that lead
to the bolt drawing cylinders on the several lime tubes. Within the valve body h³
is the valve he carried on a sliding valve stem h' that has on the end opposite the
valve a piston h that holds between it and the bottom of the cylinder a coiled
spring he that holds the inlet open except when a greater pressure is exerted on.
the outer end of the piston in the chamber h¹0. Into this chamber 10 is led the
pipe H3 from the "open" side of the piston in the throttle operating cylinder I.
When the gas flows from the steering cylinder as already described through the
pipe H there is no pressure of gas in the chamber 10, so that the valve in the cut-
off is open for the passage of gas to the bolt drawing cylinders of the expanding
chambers, but as soon as the throttle is opened there is a strong pressure exerted
upon the piston 8 by the flow of gas through the pipe h³ and the valve is pushed
down so as to close the inlet h, and this is held closed so long as the gas is flowing
from the throttle valve to operate the engine.
The object of this cut-off valve is to prevent the flow of gas into the heating
chambers every time that the rudder may be moved to starboard in handling the
torpedo.
By a movement of the key at the pole changer the current is broken and the
armature is released, which allows the slide valve of the steering cylinder to move
to the central position (see Figure 18) under the pull of the spring ja so coiled
about the extension of the valve stem and so seated as to be compressed by the

page_text: movement of the valve to either side of the centre. At the same time the rudder
is brought to a central position or "steady" by the recoil of the spiral spring Jo
that is coiled about the piston rod and is seated between a collar on the rod and
the cap on the tube projecting from the cylinder head, and the piston is also
returned to a central position in the cylinder.
The arrangement of parts by which the return of the valve and the piston to the
central position is ensured is substantially the same in each structure; the valve
stem j² slides in a sleeve j' that also slides in a socket or bearing in the plug in the
end wall of the body of the slide-valve chamber; this sleeve at one end, abuts
against a shoulder on the valve-stem and at the outer end against a collar or
washer between which and a collar on the outer end of the valve stem the
spring is seated. It will be seen by an examination of figure 18, that the spring
will be compressed by a movement of the valve to either side of the centre, and
the recoil of the spring will return it to the same central position from both
sides alike.
The piston in the steering cylinder J is returned to central position and the
rudder held at "steady" by an arrangement of parts so nearly the same as not to
require a detailed explanation to be clear.
The extent of play of the rudder is regulated by devices within the cylinder J.
The piston rod extends a short distance through the piston and bears two nuts
that are movable on a thread cut on the piston rod and can be set and clamped at
varying distances from its face. A recess is cut in the back head of the cylinder
large enough to admit the end of the piston rod but not the nuts, and the distance
the piston will move towards the back head is clearly determined by the position
of the set nuts.
"
A similar pair of set nuts are adjustable on the rod on the front side of the
piston, and a corresponding recess is formed in the back of the front head of the
cylinder; by these latter nuts the forward movement of the piston 'is determined.
By moving the key so as to send a current in the reverse direction the armature,
valve, piston, and connected parts will be so moved as to throw the rudder
to port.
Before this starboard movement is effected the armature B2 of the magnet B¹ is
so moved by a current sent through the wire B³ from the station as to move the
slide valve which opens the throttle valve d' in the supply pipe D' from the
reservoir to the heating chambers. This movement allows the gas from the upper
part of the reservoir to pass in the tube H to the cylinder I and through that and
into the tube H³ by which it is conveyed to the cut off valve H*.
This valve operating mechanism of battery at the station, pole changer, relay,
electro-magnet, conducting wire and valve connecting levers is the same for both
the above described purpose, and is not new it having been substantially shewn
and described in prior patents.
"
In order to allow the liquid to be forced into the pipe D2 and the gas from the
reservoir into the pipe H the cocks and 1 in the plug L must first be opened,
and this is done by hand before the torpedo is launched at the station or started
from it.
THE SAFETY DEVICE.
The firing bar or pin A¹ Figure 4 projects from the pointed bow of the torpedo
a short distance and it has a limited sliding movement in a tube A³ that extends
completely through the magazine from the extreme bow to and through the closed
bulkhead that separates the magazine from the next compartment. This pin is
The firing bar or pin A¹ Figure 4 projects from the pointed bow of the torpedo
a short distance and it has a limited sliding movement in a tube A³ that extends
completely through the magazine from the extreme bow to and through the closed
bulkhead that separates the magazine from the next compartment. This pin is
held out by a stout spring A³ suitably seated (see Figure 2) and when it is pushed
inward as by striking an object in motion, the rear end of the pin is thrust
between the points a¹ and connects them. These points are in the circuit of the
local battery a, the wire a having one other break at the posts as a which are
held in an insulated block a³ with the projecting ends on the same plane, so

page_text: that they are joined when the disc a' on the end of the rod as is pressed
against them.
These posts a³ a* are seated on springs a Figure 28 so as to ensure contact
with the disc in case of any slight displacement or irregularity in the face of
the latter.
The rod as is fast to a piston in a cylinder a³ (see Figure 4) that is fast to the
bulkhead or shell of the torpedo, and a branch from the pipe D' on the engine side
of the throttle valve leads to this cylinder a³. The result is that as soon as the
throttle valve is opened and the gas used to move the engine a pressure is exerted
on the piston in this cylinder a and the disc on the outer end of the piston rods
pressed against the posts so as to close the contact.
This latter break or contact is closed as long as the engine is in operation but as
soon as the throttle is shut or the pressure of the gas exhausted the torpedo is
stopped and the break again opened by the recoil of the spring a
When the engine is in operation the pushing in of the firing pin completes the
local battery circuit and fires the fuse a¹ thus exploding the charge, but when
the engine has stopped, the safety break is made in the circuit and the torpedo
can be handled with no danger of the accidental explosion of the charge.
The several circuits of the starting wire and steering wire are completed by
connection to the torpedo at one end and a submerged plate at the station in the
ordinary manner.
In order to protect the torpedo from injury from projectiles that may be fired
at it, it is submerged a short distance (about three feet), and is held at the desired
depth by means of the float M that is secured to standards or braces m rising from
the upper side of the torpedo. This float is similar in shape to the torpedo, is
somewhat longer than it, and is filled with cork, cellulose, or a great number of
inflated rubber bags which are very buoyant and will not be washed out of the
float even when the latter is pierced and riddled with balls. The usual guide
rods project from the upper side of the float and bear flags to indicate its position
and direction.
The cable is payed out from the cable chamber through the hollow propeller
shaft in the ordinary manner as the torpedo moves away from the station or
starting point.
The float overhangs the stern of the torpedo and the propeller and thus prevents
the latter from pulling the stern down and lifting the bow out of water, and the
drag m¹ fast to the bow of the float on the end of the standard m² aids in pre-
venting the boat from diving, the object being to ensure a horizontal position and
motion of the torpedo in action in the water. The long float serves to support the
torpedo with the charges of explosive at a depth below the surface of the water
that will make its explosion surely effective.
The firing pin or bolt is shut out from the magazine chamber, and the advantage
of this is that the charge can be packed well into the bow of the torpedo without
danger of accidental explosion which would be caused by such contact with the
pin, if uncovered and the wires, as would form an electrical connection and ignite
the fuse.
In Figures 33 to 37 is shewn an alternate form of reel and devices for unwinding
the cable as the torpedo moves forward. The letter N denotes the reel that is
made up of any convenient material with flanges n¹ n² and barrel n³ and is
perforated through the centre for the passage of a shaft used in winding on the
cable; the flange n' has near its outer edge several open slots n that are used in
securing it to the bulkhead F¹ of the cable chamber as by means of bolts and nuts.
The reel is held in a position lengthwise of the boat and the cable is delivered
from it, over the edge of the flange n' that flares slightly outward, and through a
curved guide n³ that is fast to the outer end of a flyer n that is attached to the
stem n on the reel so as to revolve freely, but has only little play in the line of
the axis of the reel. The hub of the flyer is held between a collar next the
flange n² and a spring 8 coiled about the stem and pressed against it by the

page_text: set-nuts n. The office of this device is to hold the flyer with an adjustable yielding
pressure strong enough to prevent the cable from unwinching by recoil.
From the reel the cable is led through the. hollow valve stem to the stern of the
boat and out of the tubular shaft beyond the propeller G2 passing through the stop
valve O in the shaft.
This stop valve prevents the water from flowing into the torpedo through the
engine and its valves, and it consists of the disc o fast to the stem o¹ and fitting on
the seat against which it is held by the pull of the spring o³ that is seated
between the lug o' on the inner surface of the tube and the back of the ring o³ to
which the valve-stem is secured by its flaring arms of.
On the outer side of the valve seat the elastic packing disc o' is attached to the
valve disc with the cable passing through its central part which extends outward.
along the cable so that the pressure of the water about it will cause it to hug the
cable closely. The outer end of the valve stem is supported by a spider in a
similar manner to the inner end.
The pressure of the exhaust is sufficient to open this valve against the pressure
of the water and the force of the spring, and the pull of the cable hold it open
when the torpedo is in motion, but when the torpedo stops the valve closes at once
which gives the advantage of freedom from water in the engine.
Another advantage of my invention resides in the safety device located on the
engine side of the throttle valve so as to make the explosion of the charge
impossible except when the torpedo is running under pressure; the closing of the
throttle valve or exhaustion of the pressure of the gas opening the safety break in
the circuit of the battery used to fire the charge.
By the use of a strainer in the tube conveying the. liquefied gas from the flask of
the heating chambers, any chance clogging up of the throttle and other valves by
sediment is avoided.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed as communicated to
me by my foreign Correspondents I declare that what I claim is :-
First. In combination with a submerged torpedo, a pointed cylindrical float
with its stern overhanging the stern and propeller of the torpedo, all substantially
as described.
Second. In combination with a submerged torpedo, a surface float with its stern
overhanging the stern and propeller of the torpedo, all substantially as described.
Third. In combination with a submerged torpedo, a surface float with its stern
overhanging the stern and propeller of the torpedo, and its bow bearing a drag to
prevent diving, all substantially as described.
Fourth. In combination with the submerged torpedo, the surface float bearing
on a standard the tilting drag having a limited motion in a vertical plane, all
substantially as described.
Fifth. In a torpedo, the firing-pin enclosed within a tube extending entirely
through the magazine and protected from contact with its contents, all substantially
as described.
Sixth. In combination with the sliding firing-pin of the torpedo, the local
battery within the torpedo, the break in its circuit closed by the movement of the
firing-pin at the inner end of its play, and the safety break closed by the motive
power running the engine, all substantially as described.
Seventh. In combination with the sliding firing-pin of the torpedo, the battery
circuit with a break opened and closed by the movement of the firing-pin and a
safety break opened by the pressure of the motive power running the engine taken
from the engine side of the throttle valve, all substantially as described.
Eighth. In combination with the battery circuit, the firing-pin A¹, the points a¹
adapted to be connected by the inward movement of the pin, the spring seated
posts a³, a, the rod a bearing the disc a' and fast to a piston in the cylinder a³ on
the branch from the supply pipe D³, all substantially as described.

page_text: Ninth. The combination with the gas reservoir and the supply pipe of the
circulating system, of the strainer 'd, comprising the chamber d fixed to the
supply-pipe, and the counterpart-pipe having its end projected longitudinally
within the chamber and provided with perforations, all substantially as described
and for the purpose stated.
Tenth. In combination with the reservoir, the pipe system and the gas heating
and expanding chambers, the lime tube secured within the chamber, the bolt
locking the tube and bearing the piston in the cylinder connected with the gas
supply system, whereby by the movement of said piston rod, the tube is auto-
matically opened, all substantially as described.
Eleventh. In a torpedo propelled by the expansion of gas or fluid, the gas heating
chamber, the lime tube within the chamber, the spring for opening said tube and
a device connecting the lock of the tube with the gas supply whereby the tube is
opened and the lime is dumped automatically by the opening of a valve in the
steering cylinder, all substantially as described.
Twelfth. In combination in a torpedo propelled by the expansion of gas or fluid,
the pipe system connecting with the valves of the starting and steering cylinders,
the cut-off valve interposed between the steering cylinder, and the pipes branching
to the unlocking cylinders of the lime tubes, all substantially as described.
Thirteenth. In a torpedo propelled by the expansion of gas or the like fluid, the
reservoir, the heating and expanding chambers, the pipe system, the starting and
stopping cylinder and its connected valves, the steering cylinder with its valves,
and the cut-off valve H interposed between the steering cylinder and the branched
pipes to. the several heating chambers of the pipe leading from the opening side of
the starting cylinder and the closing chamber of the cut-off valve, all substantially
as described.
Fourteenth. In combination with the electrical devices for opening and closing
the slide valve of the steering cylinder, the spring held between the shoulders on
the valve-stem and collar on the inner end of the stem whereby the spring is com-
pressed by a movement of the valve in opening the ports to both sides of the piston
and by its recoil closes the ports, all substantially as described.
Fifteenth. In combination with the rudder-post and connecting rods, the piston-
rods of the steering cylinder bearing on both sides of the piston the adjustable
set-nuts, and the cylinder heads with the inward sockets, all substantially as
described.
Sixteenth. In combination with a gas heating and expanding chamber containing
chemicals, an inner vessel also containing chemicals, and a device for opening it
operated by the motive power running the engine, all substantially as described.
Seventeenth. In combination with a gas heating and expanding chamber con-
taining chemicals, and an inner vessel secured in said chamber also containing
chemicals, the bolt or catch operated by the pressure of the gas, all substantially as
described.
Eighteenth. In combination with the exhaust tube of a submarine torpedo, a
stop valve located within the tube and having a central opening through it for the
passage of the conductor cable, all substantially as described.
Nineteenth. In a vapor engine, in combination, a group of cylinders, arranged
about a common centre, the pistons with the connected rods that engage a curved
cain groove formed on a cam-block fast to the central shaft, and the hollow rotary
valve-stem bearing the rotary valves with the several inlet and outlet ports, all
substantially as described.
Twentieth. In a vapor engine, in combination, a cylinder, a piston with its
piston rod bearing the anti-friction roller that engages a curved cam groove, the
cam block bearing the cam groove, and fast to the driving shaft and the hollow
rotary valve-stem bearing the rotary valves with the several inlet and outlet ports,
all substantially as described.
Twentyfirst. In combination with a group of cylinders arranged about a common
centre and with their axes parallel, the pistons with connected rods, the curved

page_text: cam fast to the main shaft and set in a plane transversely of the line of movement
of the rods, the hollow valve-stem bearing the rotary valves having inlet and outlet
ports, and held between the cylinder heads and the shoulders on the valve-stem, all
substantially as described.
Twentysecond. In combination with the group of cylinders arranged about a
common centre, the pistons connected to the main shaft whereby the latter is
rotated, the hollow-valve stem bearing the rotary valves with the inlet port cut
through both walls of the hollow disc-like valves whereby the valve is counter-
balanced, and the outlet-ports opening into the valve-stem, all substantially as
described.
Twentythird. In combination with the outlet pipe e from the gas heating
chamber E¹ a safety valve e having its valve spring submerged in oil held in an
extension of the valve body, all substantially as described.
ינים
BOLL
1 1000
HASELTINE, LAKE. & Co.,
Agents for the Applicant.