Improvements in Shells or Projectiles for use with Dynamite or other High Explosive.
Year: 1890

page_text: Date of Application, 6th May, 1890-Accepted, 20th Sept., 1890
CUNT LEIN DI PATALION
Improvements in Shells or Projectiles for use with Dynamite or
other High Explosive.
I, EDWARD STERN, of 4330 Frankford Avenue Philadelphia, Pennsylvania, United
States of America, Merchant, 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:-
My invention consists of a shell or projectile for dynamite or other high explosive,
providing means, whereby the shocks communicated to the dynamite or other high
explosive upon the explosion of the charge of gunpowder or other explosive,
or pressure used in the discharge of a projectile from a gun or cannon, are reduced,
or in great part avoided, thus lessening the danger of explosion in shells of this class,
before they have left the gun or cannon from which they are fired.
My invention will also reduce the sudden shock which tends to burst the explosion
chamber of the gun or cannon when the propulsive charge is exploded.
In the accompanying drawings:-
:-
Figure 1 represents a longitudinal section of a dynamite shell or projectile embody-
ing my invention.
Figures 2 and 3 represent sections respectively on lines ... and y, y of Figure 1.
Figure 4 represents a longitudinal section of a modification.
Figures 5, 7, 8 and 9 represent longitudinal sections of modifications.
Figure 6 represents a transverse section on line z, Figure 5.
Figure 7 represents a transverse section on line 1, 1 Figure 7.
Figure 10 represents a transverse section on line a¹, a¹, Figure 8.
Figure 11 represents a transverse section on line 6, 6¹ Figure 9.
Figure 12 represents a portion of Figure 8 on an enlarged scale, after the sections
containing the dynamite have moved from their primary position as they are being
thrown from a gun or cannon.
Figures 13 and 14 represent longitudinal sections of modifications.
Figures 15 and 16 represent longitudinal sections of portions of modifications.
Figure 17 represents a section on lines s, s Figure 16.
Figure 18 is a longitudinal section illustrating a method of packing the explosive.
Figure 19 represents a section on line 1, Figure 18.
Figure 26 represents a transverse section showing the sections of the cylinder
Figure 18.
Figure 21 represents a section of a modification in which a stem passes centrally
through the explosive.
Figure 22 represents a face view of an explosive in sections or segments.
Figure 23 represents a view of a portion of Figure 18 on an enlarged scale.
Similar letters of reference indicate corresponding parts in the several figures.
Referring to the drawings, Figures 1 and 2, A designates a shell, the chamber B
of which adapted to contain air or other gas under pressure, or it may contain
air or gas at atmospheric pressure, as is found most desirable.
designates a hollow or chambered plunger or piston, which is fitted to the breech
end of the chamber B, and adapted to slide into said chamber, the forward
end of the piston in Figure 1 having in its periphery the movable plugs, tongues
or dogs D, which are adapted to enter grooves E, in the inner periphery of the wall
of the chamber B, and are forced thereinto by the springs F, whereby when the parts
re in their normal position, separation of the piston from the shell is prevented.
Ports are provided to assist in seating the dogs D in the grooves E.
In Figure 4 is shown a different method for retaining the piston C in position.
The wires Y extend from the head of the chambered piston Cto the head of the walls
of the pressure chamber B, the head of the piston C and the rear walls of the pressure

page_text: chamber B buing pierced in such manner that wire will fit in grooves, thus not
increasing the calibre of the shell.
The wires Y retain the plunger in its primary position, and permit of its advance
further within the pressure chamber upon the explosion of gunpowder, or other forco
used in discharging the shell from the cannon. The head of the piston (1 is recessed,
thus providing a place for the wires between the head of plunger Cand rear wall of
the pressure chamber B, when the plunger is forced forward.
In Figuro 4, the forward end of the piston is provided with dogs which are
adapted to engage with serrations or shoulders X on the wall of the chamber B, thus
locking said piston to the projectile after the piston is forced into the chamber by the
explosion of gunpowder or other force used in discharging the projectile.
In Figure 1, on the rear of the piston (are catches K which, when the piston
enters the chamber B, are adapted to engage with a shoulder 1 at the rear of the
shell A, thus locking said piston to said shell when the shell or projectile is discharged
from a gun or cannon.
While showing methods of retaining the piston ('in its primary position, and also
retaining it in the position it is forced to assume upon the discharge of the projectile,
the right is reserved to use any known device or devices to facilitate the objects
sought.
said
In Figure 1, no stop cock is designated for the introduction of the compressed air
or other gas into the chamber B. The method relied upon in Figure 1 to produce the
required degree of initial pressure in the pressure chamber B, is the introduction into
said chamber of a sufficient quantity of liquified carbonie-acid gns or other gas,
liquified carbonic-acid gas or other gas being introdued into the chamber B prior to
the introduction of the piston within said chamber B. said liquified gas being
permitted to expand after the adjustment of the piston (', thus supplying the desired
degree of pressure in the chamber B.
In Figure 4, n stop cock is shown whereby compressed air or other gas can be
forced within the hollow chamber of the piston (through the port and from
the chamber C into the pressure chamber B through the port W which forms a
communication between the chambers Band (",
After the introduction of the degree of pressure found desirable in the chambers 13
and the connection with the stop-cock is severed and the stop-cock is protected
by the shield which screws over it.
In Figure 1, on the piston C, near the forward and thereof, is a peripheral groove G
with which communicate the ports H, the latter radiating from the chambered
interior of the piston C. On the inner periphery of the wall of the chamber B
are longitudinally extending grooves J which are so disposed that when the piston
is forced into the chamber B the peripheral groove G is in communication with said
grooves J whereby communication is estal lished between the chamber B, (, thus
providing means for relieving the greit pressure generated within the chanser B by
the advance of the piston (within said chamber.
In Figure 4, the forward end of the piston is pierced by the pork W, which thus
forms a communication between the chambers B and C, whereby when the piston (
is forced forward within the chamber 13, the high pressure formed within the
chamber B is relieved. Additional ports may be made in the head of the piston C,
and so proportioned us is found in practice to produce the most efficient results.
In Figuro 1, projecting forward from the hond of the shell A, is a rod or stomm M
on which are supported sections of metal or other material N, the same being of the
form of annuli and adapted to receive dynamite or other high explosive material.
In the peripheries of the sections or annuli N are grooves S which are occupied by
bolts or rods T, the bolts or rods being provided with nuts T whereby the sections
or annuli are firmly bound together. The sections containing the dynamite or other
high explosive are now covered with a non-heat conduction material protecting it,
from contact with the stem M, the head of the climber B, the cap Q, and from the
heat of the gun from which the projectile is fired.
When placed upon the stom MI, the united sections N are held in position by means

page_text: of a cap Q and nut R. The cap Q is of the full calibre of the gun, or of the same
diameter as the exterior of the pressure chamber B, and the rear end of the piston C.
The wrapped sections N are of lesser diameter, so as not to engage with the rifling
of the cannon from which the projectile is fired, the cap Q and sections N revolve
freely upon the stem M, thus preventing sudden shock of rotation to the high explosive
contained within the sections or annuli N.
To further protect the sections N from the rotative influence of the projectile to
which it is attached, washers may be interposed between the sections N and the head
of the pressure chamber B, and fubricants can also be made use of.
The fact that the sectious N are firmly bound together by the rods or bolts T will
prevent the tendency of one section or annuli to rotate more rapidly than the entire
mass of sections.
In Figure 4, a modification of the manner of adjusting the high explosive is shown,
the stem M being dispensed with, the walls of the chamber B are continued forward,
but may be of less thickness of metal. The sectious or annuli containing the high
explosive are bolted together and placed within the chamber forined by the continua-
tion forward of the walls of the chamber B, and will be held within said chamber by
a cap screwing on to said chamber. In this modification, the sections or annuli
are not pierced through the centre to enable them to be fitted upon a stem. They
are covered by asbestos or some other non-heat conducting material, and suitable
washers and lubricants are provided so that the rotary motion of the projectile when
fired is not communicated too suddenly to the sections or annuli containing the high
explosive.
The operation is as follows;-When the parts are in position, as shown in Figures 1
and 4, the projectile may be inserted in a gun or cannon, and when the gunpowder
or other material employed to force the projectile from the gun or cannon is exploded,
or permitted to exercise its propulsive force, the piston C is impelled into the
chamber B, the gas, air, or the like in the latter being compressed, forms a cushion,
thus communicating motion gradually, and with but little shock to the sections or
annuli containing the high explosive.
The methods of relieving or moderating the pressure generated in the chamber B
by the advance of the piston C therein have already been described. In practice, the
dynamite or high explosive employed can be exploded by contact with the object at which
it is fired, or any approved form of fuse can be employed to explode it at the point
desired. In practice, suitable materials may be employed to assist in forming air-
tight joints between the chamber B and the piston C, and also between the sides of
the chamber B and the head of the piston C.
In Figure, the piston C is shown as on the exterior of the shell A, and its inner
face has, near the forward end thereof, the grooves E to receive the spring-pressed
plugs, tongues or dogs D, on the rear end of the shell, whereby when the parts are
in their normal position, separation of the piston from the shell is prevented.
The piston in said figure is also provided on its inner periphery, near the rear
thereof, with serrations or shoulders X which are adapted to be engaged by the
dogs D, for locking the piston to the projectile, when said piston is forced over
the shell by the explosion of gunpowder or other force used in discharging the
projectile. A stop-cock C is connected with the piston whereby compressed air or
other gas can be forced within the chamber B. Grooves are also shown for relieving
the pressure generated within the chamber B by the advance of the piston or sleeve Č
over the projectile A.
In Figure 7, a modification is shown in which the piston C is without a head of the
full calibre of the gun. The piston or plunger C is retained in its primary position
by the action of the movable tongue or dogs D which are adapted to enter
grooves E in the inner periphery of the walls of the chamber B and are forced
thereinto by the springs F. A stop cock C is shown, whereby air or other gas under
pressure can be introduced into the chamber, prior to the placing of the projectile in
the cannon. When, by the action of the force used to impel the projectile froin the
cannon, the piston C is urged forward within the chamber B, the dogs D are adapted

page_text: to engage with the serrations or shoulders X on the walls of the chamber, thus looking
the piston C to the projectile after the piston is forced forward.
In Figure 8, a modification is shown. The piston or plunger C divides the interior
of the projectile into two parts, the rear chamber B which is adapted to receive air or
other gas under pressure, and the forward chamber which is adapted to receive sections
or annuli containing high explosives.
The piston is retained in its primary position by the dogs D which are adapted to
enter grooves E in the inner periphery of the walls of the chamber of the projectile,
and are forced thereinto by the springs F. Longitudinal grooves J are provided
on the interior face of the chamber B which come into communication with the hollow
binding rods Z of the annuli or sections containing the high explosive when the
plunger C is forced rearward into the chamber 13 when the projectile A is impelled
from a gun or cannon. A portion of the air or other gas can thus pass forward into
the chamber formed in the forward ond of the projectile by the movement rearward
within the projectile of the piston, and the sections containing the high explosive,
thus reducing the great pressure in the chamber B and also preventing the sections,
containing the explosive, from being pushed forcibly forward against the front of the
projectile after the projectile leaves the gun or cannot.
In Figure 9, serrations or shoulders & are in the walls of the chamber B with which
the dogs D of the plunger Care adapted to engage after the piston and the section
containing the high explosive enter the chamber B when the projectile is forced from
a gun or cannon.
In practice suitablo materials may be employed to assist in the formation of air
tight joints.
In my invention and its modifications, the air cushion in the chamber B will be
found to decrease the shock which is imparted to a high explosive, when fired in a
projectile of ordinary construction.
In practice, any known devices will be employed to retain the piston or plunger (!
in its primary position, and also to control its action after it leaves its primary position.
In practico, the dyunmite or high explosive can be exploded by contact with the
object fired at, or any approved form of fuse can be employed to explode it at such
point as may be desired.
In Figures 5 and 7 the nuts T¹ and binding holts and rods Taro not shown.
Figure 13 shows dogs D mounted on the forward end of the piston C for holding
the latter in its primary or normal position. When the piston has advanced, said
dogs Dengage with the serrations X on the wall of the chamber B. Catches J are
also connected with the breech end of the piston and adapted to engage with the
shoulder L for locking the piston with the body A when the projectile is discharged.
When the piston is forced forward within the chamber B, the construction is of such
character that a chamber is formed between the walls of the chamber B and the
piston U, which space can be used to relieve the pressure generated in the chamber B
by the advance thereon of the piston C
in which the sleeve has a separate
Figure 14 shows a modification of Figure
plunger, and the roar of the body A is provided with an air chamber, the intter
having ports and communicating grooves which communicate with grooves in the
pressure chamber B, when the sleeve is forced forward over the rear of the body A,
thus providing means for relieving the pressure generated by the advance of the sleeve
over the rear of the body A.
Figure 15 represents a modification, the clambor for relieving the pressure is on
the exterior of the holy A. Packing P is applied to the rear of the body A so as to
form a tight joint with the forward end of the sleeve, when the projectile is discharged.
Figure 16 represents a method of packing the explosive, the latter being contained
in annuli bound together by rods, and incased with non-heat conducting material,
and encircled by rubber or elastic bands B2, and placed in a canister C², whereby all
metallic connection of the explosivo with the body of the projectilo is avoided.
Figure 18 shows a different mode of packing the explosive. In this case, there is
employed a hollow cylinder divided into sections by diaphragms D³ having spaces

page_text: Ochtende same adapted to receive me explosive, wiICH ICT my be priÇOU THE DAY
of suitable material.
The cylinder is longitudinally divided as shown in Figure 20, for convenience in
charging the same with the explosive, the latter being placed in one section of the
cylinder, after which the other section of the cylinder is fitted in position, the two
sections being secured by screws D³ passed through the same into the diaphragms, see
Figure 23.
Rubber studs and bands are then applied around the cylinder, which is placed in
the canister C, thus avoiding metallic connection with the body of the shell, and also
preventing vibration when the projectile is discharged.
The canister is exteriorly grooved, so that when employed in the projectile,
Figure 8, when the projectile is discharged, and the explosive leaves its primary
position, the grooves in the canister will be placed in communication with the
grooves in the pressure chamber B, thereby permitting passage of air or other
gas from the chamber B into the spaco left between the explosive and head of the
projectile.
In Figure 22, the explosive is divided into sections or segments for convenience
in charging, and greater safety.
In practice, suitable gas checks will be employed to prevent the escape forward
of the gases from the charge of gunpowder when it is exploded.
Suitable bands will also be provided to engage with the rifling of the gun or cannon,
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 :-
1st. A projectile having a pressure chamber, and a plunger or piston fitted to
the same, said piston having a chamber which may be placed in communication with
the pressure chamber of the projectile for relieving the pressure created therein when
the projectile is discharged, substantially as described.
2nd. A projectile having a chamber, and a plunger or piston fitted to the same,
said piston having a chamber which may be placed in communication with the
chamber of the projectile for relieving the pressure created therein when the
projectile is discharged, substantially as and for the purpose set forth.
3rd. A projectile having a pressure chamber, and a piston fitted into the same,
said piston having also a chamber and communicating grooves or ports, which
may be placed in communication with grooves in the wall of the pressure chamber
of the projectile when the piston is impelled into the chamber thereof, thus per-
mitting the compressed air, gas or the like to enter the chamber of the piston,
thus relieving the pressure chamber, substantially as described.
4th. A projectile having a pressure chamber, a chambered piston fitted in the
same, and means for holding a high explosive in front of said pressure chamber,
substantially as described.
5th. A projectile having a pressure chamber, a chambered piston fitted in the
same, and means for holding a high explosive in front of said pressure chamber
the high explosive being inclosed in sections which are bound together, and con-
nested with the projectile in the manner described, so as to prevent shock to the
high explosive, when the projectile is rotated, substantially as described.
6th. A shell or projectile provided with a high explosive which is inclosed in
sections or annuli, substantially as described.
7th. In a projectile, a high explosive inclosed in sections which are coupled by
binding rods or bolts, substantially as described.
Sth. A high explosive inclosed in sections which are bound together, and con-
nected with a projectile, substantially as described.
9th. A projectile having a rod or stem connected with the head thereof, sections
adapted to receive a high explosive fitted on said stem, a layer of non-heat-
conducting material inclosing sail sections, and binding rods for said sections,
substantially as described.

page_text: 10th. A projectile having a front chamber for high explosive material, a pressure
chamber in the rear thereof, and a movable piston forming the rear wall of said
pressure chamber, the breech end of said piston being of the full calibre of the
gun or cannon employed to discharge the projectile, substantially as described.
11th. A projectile having a front chamber for high explosive material, a chamber
in the rear thereof, and a movable piston forming the rear wall of said chambor,
the breech end of said piston being of the full calibre of the gun or cannon
employed to discharge the projectile, substantially as described.
12th. A projectile having a prossure chamber, a chambered piston fitting into
said pressure chamber, said projectile being adapted to receive dynamite or other
high explosive, said explosive being situated in front of the pressure chamber, and
separated from it by a fixed wall, and adjusted to the projectile in such manner
that it will not be rotated suddenly, when the projectile to which it is adjusted is
suddenly rotated, substantially as described.
13th. A projectile having a chamber, a chambered piston fitting into said chumbar,
said projectile being adapted to receive dynamite or other high explosive, said
explosive being situated in front of the chamber, and separate from it by a fixed
wall, and adjusted to the projectile in such manner that it will not be rotated suddenly,
when the projectile to which it is adjusted is suddenly rotated, substantially as
described.
14th. A projectile having a chamber, and a piston fitted in the same, said piston
having also a chamber with communicating grooves and ports which may be placed in
communication with grooves in the walls of the chamber of the projectile when the
piston is forced forward within the chamber of the projectile, thus permitting the
oscape from said chamber of the air or other gas which is compressed by the advance
of the piston, substantially as described.
15th. A projectile having a chamber adapted to receive air or gas under pressure,
with a movable piston forming the rear wall of the chamber, said projectile being
adapted to receive dynamite or other high explosive, said explosive being situated in
front of said pressure chamber, and separated from it by a fixed wall, substantially as
described.
16th. In a projectile, a chamber fitted with a piston, a high explosive inclosed in
sections attached to the projectile, said sections being compled by binding rods or bolts,
and situated before the chamber aforesaid, and separated from it by a fixed wall,
substantially as described.
17th. In a projectile, a chamber fitted with a piston, a high explosive inclosed in
sections attached to the projectile, said sections being situated before the chamber
aforesaid, and separated from it by a fixed wall, substantially as described.
18th. A projectile having a pressure chamber, and a high explosive inclosed in
sections attached to the projectile, said sections being coupled by binding rods or bolts,
and situated before the chamber aforesaid, and separated from it by a fixed wall,
substantially as described.
19th. A projectile containing or holding high explosive material, an air chamber in
the rear of said high explosive material, with a fixed partition between, a piston
fitting into said air chamber, and adapted to move in said air chamber, the breech end
of the piston being of the full calibre of the gun, said air chamber and piston being
fitted with mechanism for interlocking, substantially as described.
20th. A projectile containing or holding high explosive material, a pressure chamber
in the rear of said high explosive material, with fixed partitions between, a movable
chambored piston having its breech end tho full calibre of the gun, said piston being
adapted to move into said pressure chamber, substantially as described.
21st. A projectile having a chamber for highly explosive material therein, and
provided with a sleeve embracing the breech end thereof, the said sleeve forming an
air clumber at the breech und of the projectilo, the projectile being adapted to move
in said air chamber, said parts being combined substantially as described.
22nd. A projectile having a chamber for highly explosive material therein, and
provided with a sleeve embracing the breech end thereof, the said sleeve forming a

page_text: chamber for air or other gas under pressure, said projectile being adapted to move in
said air chamber, said parts being combined substantially as described.
23rd. A projectile having a chamber for high explosivo material, and a chamber for
compressed air or gas, rearward of the same, formed by a sloeve at the breech end of
the projectile, which sleeve is movably fitted to the projectile, and capable of riding
thereover, as stated.
24th. In a projectile for high explosive material having a chamber rearward thereof
for air or gas under pressure, formed by a sleeve movably connected with the
projectile and capable of riding thereover, said projectile and sleeve having means for
interlocking, substantially as described.
25th. A projectile having a shoulder on its side, and a sleeve embracing the breech
end thereof, and adapted to ride thereon, said projectile having locking dogs therein,
the latter being adapted when the sleeve is in its primary position, and also when it is
advanced to engage in recesses in the sleeve, said parts being combined substantially
as described.
26th. A projectile provided with a sleeve ombracing the broech end thereof, and
adapted to ride thereon, the said sleeve forming an air chamber between the explosive
chaimbor of the gun or cannon and the projectile, said parts being combined sub-
stantially as described.
27th A projectile having a sleeve embracing the rear end thereof, and adapted to
ride thereon, said sleeve and projectile being provided with means for relieving the
pressure generated within the sleeve when it is impelled forward over the projectile,
substantially as described.
28th. A projectile having a front chamber for highly explosive material, an air
chamber in the rear thereof with a movable plunger formning the rear wall of the
air chamber, said parts being combined substantially as described.
29th. A projectile having a front chamber for high explosive material, a chamber
in the rear thereof, adapted to receive air or gas under pressure, with a movable
plunger forming the rear wall of the air chamber, said parts being combined
substantially as described.
30th. A projectile having a front chamber for high explosive material, an air
chamber in the rear of said highly explosive material, with a fixed wall between the
explosive and the air chamber, a plunger at or near the breech end of the projectile,
and having movable plugs fitted in its periphery, and adapted to enter grooves in the
air chamber, said parts being combined substantially as described.
31st. A projectile having an explosive material chamber, an air chamber B in the
rear of said explosive material chamber, and having the grooves E in its inner
periphery, the plunger C, the stop-cock C, and the dogs D, with springs F, said
dogs being fitted in the periphery of the plunger, and adapted to enter the
grooves E, said parts being combined, substantially as described.
32nd. A projectile having an air chamber with the grooves E, the plunger C
at or near the breech end of the projectile, and the movable plugs 1 fitting in
the periphery of the plunger, and entering the grooves E, said parts being combined,
substantially as described.
33rd. A projectile having a hollow interior, the same being divided into two
chambers by a transverse movable plunger, the front chamber being adapted to
receive a high explosive, and the rear chamber being adapted to receive air or gas
under pressure, substantially as described.
34th. A projectile having a hollow interior, the same being divided into two
chambers by a transverse movable plunger, the front chamber adapted to receive
high explosive, the rear chamber to receive air or other gas under pressure, and
having means for relieving the pressure generated in the rear chainber by the
sudden forward motion of the projectile when discharged, substantially as described.
35th. A projectile having a hollow interior, the same being divided into two
chambers by a transverse plunger, the front chamber being adapted to receive a
high explosive, the rear chamber being adapted to receive air or gas under pressure,

page_text: the chamber having grooves and serrations, and the plunger having dogs, and the
high explosive hollow rods, substantially as described.
36th. In a projectile, a pressure chamber, the pressure being produced in said
chamber by the introduction of liquid carbonie-acid gas or other liquified gas in
said chamber, substantially as described.
87th. A projectile having a pressure chamber, a piston or sleeve, a casing for a
high explosive, and packing for the explosive, whereby vibrations and metallic
connections with the body of the shell are avoided, substantially as described.
38th. A projectile having a casing for a high explosive, the same being formed
into sections by diaphragms.
39th. A projectile having a eising for a high explosive, the same being longi-
tudinally divided, and provided with connecting devices, the casing being divided
into sections by diaphragms, and encircled by elastic bands and studs, substantially
as described.
40th. A projectile having a canister for high explosives, a pressure chamber, a
piston or sleeve, and packing interposed between the rear end of said chamber,
and forward end of said piston or sleeve.
41st. A projectile provided with a sleeve adapted to embrace the breech end
thereof, and adapted to ride thereon, said sleeve containing air or other gas under
pressure, the projectile having a chamber with communicating grooves and ports
which may be placed in communication with grooves in the walls of the sleeve,
maid grooves and ports providing means for relieving the pressure generated within
the sleeve when it is forced forward over the rear end of the projectile, substantially
as described.
42nd. A projectile provided with a sleeve adapted to embrace the breech end
thereof, and adapted to ride thereon, said sleeve containing air or gas, the projectile
having a chamber with communicating grooves and ports which may be placed in
communication with grooves in the wal's of the sleeve, said grooves and port- pro-
viding means for relieving the pressure generated within the sleeve when it is
forced forward over the rear end of the projectile, substantially as described.
43rd. A projectile having a sleeve, said sleeve being provided with a plunger
adapted to retain air or gas under pressure within the sleeve, said sleeve being
adapted to advance over the roar end of the projectile, substantially as described.
44th. A projectile having a sleeve, said sleeve being provided with a plunger
adapted to retain air or gas within the sleeve, said sleeve being adapted to advance
over the rear end of the projectile, substantially as described.
45th. A projectile having a pressure chamber, a piston or sleeve, and a casing
for high explosive, the easing being formed into sections by diaphragms, substantially
as described.
46th. A projectile having a hollow interior, the same being divided into two
chambers by a transverse movable plunger, the front chamber being adapted to
receive a canister containing high explosives, the rear chamber being adapted to
receive air or other gas, the rear chamber having grooves and sorrations, the
plunger dogs, the canister containing high explosives having longitudinal and
transverse grooves, substantially as described.
Datad ih
ROA
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.