An Improvement in Tubes for Adapting Small-arms for Practice with Miniature Ammunition.
Year: 1890

page_text: Date of Application, 12th Feb., 1890
Complete Specification Left, 12th Nov., 1890-Accepted, 13th Dec.; 1890
DE MULTIVATION.
An Improvement in Tubes for Adapting Small-arms for Practice
with Miniature Ammunition.
I, RICHARD MORRIS, of Bennett Park, Blackheath in the County of Kent, Engineer,
do hereby declare the nature of this invention to be as follows:-
My invention relates to the tubes which are often used for adapting small arms,
such as ordinary rifles for practice with miniature ammunition, as described in my
Specification No. 1773 of 1881.
The object of my present invention is to facilitate the extraction of the cartridge
shells when such a tube is used in a bolt rifle.
For this purpose, I make the rear end of the tube externally of a shape to fit the
charge chamber of the rifle and cut an external screw on its front end, so that on the
tube being inserted from the breech end and a nut being screwed on its protruding
part at the muzzle, the tube is securely fixed in position. On the hinder part of
the breech end of the tube is fitted a sleeve capable of sliding and turning and
having a helical slot in which engages a pin, so that as the sleeve is slid it is
also caused partly to turn. This sleeve is recessed to admit the flange of the
miniature cartridge and it has a lip projecting like part of the flange of the full
sized cartridge.
In operating with this tube in a bolt rifle, the ordinary extractor seizes the
lip of the sleeve and on the bolt being pulled back, it draws the sleeve back with
it causing it to turn partly round until the lip escapes from the extractor before the
bolt is drawn fully back. In order to facilitate the release of the miniature cartridge
from the sleeve part of the mouth of the sleeve opposite to the lip is cut away so that
on the partial turning of the sleeve the shell of the miniature cartridge is freely
thrown out.
Dated the 12th day of February 1890
ABEL & IMRAY,
Agents for Applicant.
COMPLETE SPECIFICATION.
An Improvement in Tubes for Adapting Small-arms for Practice
with Miniature Ammunition.
I, RICHARD MORRIS, of Bennett Park, Blackheath in the County of Kent, Engineer,
do hereby déclare the nature of this invention and in what manner the same is to be
performed to be particularly described and ascertained in ard by the following
statement:-
My invention relates to the tubes which are often used for. adapting small arms,
such as ordinary rifles for practice with miniature ammunition as described in my
Specification No. 1773 of 1881.
The object of my present invention is to facilitate the extraction of the cartridge
shells when such a tube is used in a bolt rifle.
For this purpose I construct and fix the tube as I shall describe referring to
the accompanying drawings.
Figure 1 is a longitudinal section shewing the front and rear ends of the tube in
position in the barrel. Figure 2 is a side view of the rear part of the tube and Figure 3
is a plan of the rear part shewing the sleeve withdrawn by the extractor.
I make the rear end of the tube externally of a shape. to fit the charge chamber of
the rifle and cut an external screw on its front end, so that on the tube being inserted
[Price 61

page_text: from the breech end and a nut N being screwed on its protruding part at the muzzle,
the tube is securely fixed in position.
On the hinder part of the breech end of the tube is fitted a sleeve S capable of
sliding and turning and having a helical slot H in which engages a pin P so that as
the sleeve S is slid back it is also caused partly to turn.
This sleeve has a recess R to admit the flange of the miniature cartridge and it has
a lip L projecting like part of the flange of the full sized cartridge.
In operating with this tube in a bolt rifle, the ordinary extractor seizes the lip L of
the sleeve and on the bolt being pulled back, it draws the sleeve S back with it causing
it to turn partly round until the lip L escapes from the extractor before the bolt is
drawn fully back. In order to facilitate the release of the miniature cartridge from
the sleeve, part of the mouth of the sleeve opposite to the lip I, is cut away in sloping
form so that on the partial turning of the sleeve the shell of the miniature cartridge is
freely thrown out.
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:-
In combination with a tube for adapting small arms for practice with miniature
ammunition, the sleeve S with its helical slot H, recess R, and lip L, constructed and
operating substantially as described.
Dotad thin 10th of No
1000
ABEL & IMRAY,
28, Southampton Buildings, London, W.C., Agents for the Applicant.