Improvements in Gun Barrels.
Year: 1889

page_text: Date of Application, 7th Nov., 1889-Accepted, 7th Dec., 1889
COMPLETE SPECIFICATION
Improvements in Gun Barrels.
I WILLIAM WELLINGTON GREENER of 22 St. Marys Row Birmingham in the
County of Warwick Gun manufacturer do hereby declare the nature of my said
invention and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement:-
The object of my invention is to produce a gun barrel which shall be suitable
for both rifles and shot guns of any hore including cannon for grape and small missiles
it being frequently inconvenient to either possess or carry two separate guns so that
by means of my invention it is only necessary to carry both classes of cartridge to be
prepared for any emergency that may occur. Attempts have been made with this
object before but with not much success.
In order that my invention may be clearly understood and more easily carried into
practice 1 have appended hereunto a sheet of drawings upon which I have illustrated
the internal parts of the barrel which will serve as an example but the sizes, amount
of rifling and twist and other details may be greatly varied without departing from
the principle of the invention.
Figure 1 is a longitudinal section and side elevation on the line B C looking at the
left and shewing the internal part of one of my barrels at the breech end.
Figure 2 is a similar section and side elevation on the same line shewing the
internal part of the same barrel hut at the muzzle end thereof.
Figure 3 is a cross section and elevation at the breech end through the ignition
chamber a' on line EF. shewing the commencement of the rifling at a².
Figure 4 is a similar cross section at or near the centre of the barrel say on lines HK
or L M which gives a distinct view of the rifling.
Figure 5 is a cross sectional elevation through the enlarged part a² looking to the
right so as to shew the plain part a³ in elevation.
It will be seen that the barrels illustrated are of the ordinary double sporting type
with three rifle grooves or depressions a a³ and a but a greater or less number
may be used and that the usual cartridge or ignition chamber a' is provided. It will
be noticed the rifling is shewn commencing from the breech but in some cases it may
not extend quite so far. It will also be understood that I do not bind myself to the
exact size and shape of the enlarged chamber a at the muzzle end nor to the exact
ength of the plain part a3 as these may be somewhat varied.
ecessed choke barrel is the long portion of the barrel rifled for bullets or balls in
What I get in my new
combination with the recessed part in case shot cartridge is used.
acrifice only very little indeed of the rifling or effective range of the barrel when
By this means I
sed as a rifle and the disadvantage of the rifling when the gun is used for shot is
ainimized.
Having now particularly described and ascertained the nature of ny said inven-
on and in what manner the same is to be performed I declare that what I
laim is :-
The improvements in gun barrels consisting of the long rifled part in combination
ith the enlargement or recess choke near the muzzle substantiall..
GEORGE BARKER,
77, Colmore Row, Birmingham, Agent for Applicant.