Improvements in Projectiles for Small-arms.
Year: 1889

page_text: Date of Application, 17th June, 1889
Complete Specification Left, 11th Mar., 1890-Accepted, 26th Apr., 1890
PROVISIONAL SPECIFICATION.
Improvements in Projectiles for Small-arms.
I THOMAS RICHARD BAYLISS of Belmont Northfield in the County of Worcester
Mechanical Engineer do hereby declare the nature of this Invention to be as
follows:-
My invention consists of the improvements hereinafter described in projectiles for
small arms. Projectiles made according to my invention are specially suited for use
with small bore rifles but may also be used with small arms generally.
In making a projectile according to my invention I proceed as follows. I take a
disc of sheet metal preferably an alloy of copper and nickel and make therefrom by
the ordinary raising and drawing through processes a casing having the general
figure of the projectile to be made that is the said casing has the general figure of a
hollow cylinder closed at one end the said closed end being conoidal. The body of
the casing is not truly cylindrical but has upon it a series preferably eight of slightly
projecting longitudinal ribs extending from the point where the conoidal closed end
sets in to within a short distance of the open end of the case the said open end being
truly cylindrical. The diameter of the casing through two opposite ribs is nearly
of the same diameter as the open end of the casing.
The casing is filled with a core or bullet either of the well known alloy of lead and
antimony or such other alloy or metal as is suitable for a projectile the said core or
bullet filling the casing nearly but not quite to its open mouth. The core or bullet
having been inserted in the casing a circular disc fitting the interior of the open end
of the casing is placed therein the said disc lying upon the base or flat end of the
core or bullet. The open mouth of the casing is then closed upon the disc and the
three parts described namely the casing the core or bullet and the disc are virtually
made into a solid mass. One or more cannelures are made near the base of the
projectile by which the parts are more effectually held together and the shallow
troughs between the ribs of the case being filled with a solid lubricant the projectile
is complete.
In some cases I dispense with the disc described and close the open end of the case
upon the base of the core or bullet which is either completely or partially covered by
the turned in end of the case.
In a projectile made according to my invention the strength of the casing is
largely increased by the ribs and the frictional surface is reduced to a minimum
being limited to the summits of the said ribs and the circular base which constitutes
a gas check. In consequence of the small frictional surface and the efficient
lubrication of projectiles made according to my invention they possess great
penetrating power.
DI
171
CT 1000
W. T. WHITEMAN,
Agent for the Applicant.
40
COMPLETE SPECIFICATION.
Improvements in Projectiles for Small-arms.
I THOMAS RICHARD BAYLISS of Belmont Northfield in the County of Worcester
Mechanical Engineer do hereby declare the nature of my invention and the manner in
which the same is to be performed to be particularly described and ascertained in and
45 by the following statement:-
My invention consists of the improvements hereinafter described in projectiles for

page_text: .
Projectiles made according to my invention are specially suited for use with small
bore rifles but may also be used with small arms generally.
In making a projectile according to my invention I proceed as follows:-I take a
dise of sheet metal preferably an alloy of copper and nickel and make therefrom by
the ordinary raising and drawing through processes a casing having the general
figure of the projectile to be made; that is, the said casing has the general figure of
a hollow projectile closed at one end the said closed end being conoidal. The body
of the casing is not truly cylindrical but has upon it a series preferably eight of
slightly projecting longitudinal ribs extending from the point where the conoidal
closed end sets in to within a short distance of the open end of the casing the said
open end being truly cylindrical. The diameter of the casing through two opposite
ribs is nearly of the same diameter as the open end of the casing.
The casing is filled with a core or bullet either of the well known alloy of lead and
antimony or such other alloy or metal as is suitable for a projectile the said core or
bullet filling the casing nearly but not quite to its open mouth. The core or bullet
baving been inserted in the casing, a circular disc fitting the interior of the open end
of the casing is placed therein the said disc lying upon the base or flat end of the
core or bullet. The open mouth of the casing is then closed upon the disc and the
three parts described namely the casing the core or bullet and the disc are virtually
made into a solid mass.
One or more cannelures are made near the base of the projectile by which the
parts are more effectually held together and the shallow troughs between the ribs of
the casing being filled with a solid lubricant, the projectile is complete.
Figure 1 of the accompanying Drawing represents in vertical section and
Figure 2 in cross section a projectile for a small arm constructed according to my
invention.
The said projectile is composed of the sheet metal casing a the core or bullet 6 of
an alloy of lead and antimony or other metallic alloy filling the said casing and the
circular disc c at the mouth of the said casing the said disc being fixed in its place
by the closing of the mouth of the casing upon it. Figure 3 represents the sheet
metal casing a before its open mouth is closed upon the disc c and Figure 4
represents in elevation and section the casing a separately. The casing a is made
from a disc of copper or other ductile sheet metal or alloy by the ordinary raising
and drawing through processes. Figure 5 represents the core or bullet b detached.
The slightly projecting longitudinal ribs on the exterior of the casing are
marked dd. These ribs extend from the conoidal closed end of the casing to .near
the open cylindrical end. In Figure 2 the solid lubricant with which the shallow
troughs between the ribs d, d is filled is marked e.
In making the projectile described the externally ribbed sheet metal casing a is
nearly filled with the core or bullet b as represented in Figure 3. The circular disc c
fitting closely the interior of the open end of the casing is placed against the flat end
or base of the core or bullet b as seen in the said Figure 3 and the open end of the
casing is then closed upon the disc so as to secure the three parts a, b and c together
and virtually form them into a solid mass as represented in Figure 1. Cannelures
or grooves may be made in the casing a near its mouth so as to press portions of
the casing into the core or bullet and thereby assist in holding the parts together.
After the parts of the projectile have been thus secured together the projectile is
completed by dipping it in a lubricant such as bees' wax in a semi-liquid state so as
to fill the shallow troughs between the ribs dd with the said lubricant as represented
in Figure 2.
In some cases I dispense with the disc c and close the open end of the casing a
upon the base or end of the core or bullet b which may be either completely or
partially covered by the turned in end of the casing.
In a projectile made according to my invention the strength of the casing is
largely increased by the ribs d d and the frictional surface is reduced to a minimum
being limited to the summits of the said ribs and the circular base which constitutes a
gas check. In consequence of the small frictional surface and the efficient.lubrication

page_text: of projectiles made according to my invention they possess great penetrating
power.
Having now particularly described and ascertained the nature of my inven-
tion and the manner in which the same is to be performed I declare that I
claim as my invention of "Improvements in projectiles for small arms":-
Making the said projectiles of a sheet metal casing of the general figure of the
projectile to be made filled with and secured to a core or bullet the said casing having
"pon its exterior a series of slightly projecting longitudinal ribs the shallow troughs
between the said ribs being filled with a solid lubricant for the purposes and
substantially as hereinbefore described and illustrated in the accompanying Drawing.
Dated this 7th day of March 1890.
DYAN ADD DAVTING