Improvements in Breechloading Ordnance.
Year: 1887

page_text: PROVISIONAL SPECIFICATION.
Improvements in Breechloading Ordnance.
I, GEORGE QUICK, of 2, Victoria Mansions, in the City of Westminster, Fleet.
Engineer Royal Navy Retired, do hereby declare the nature of this invention to be as
follows:-
This invention is applicable to those guns having the breech closed by a screw and
to those wherein the breech is closed by a wedge or sliding block, and relates to the
extraction, by means of the movement of the breech-screw or breech-block, of the
percussion or electric tubes or primers used in firing heavy ordnance.
The extractor is fitted into a recess immediately over the vent and one part is
adapted to grasp the whole or part of the head of the vent-seating tube or primer and
the other part of the extractor is adapted to work in a cam-groove formed in the gun
in such manner that when the breech is closed the extractor shall fit closely over the
vent, but when opening the breech the said extractor shall be powerfully forced
outwards carrying the primer with it during the first portion of the opening, and
then retracted during the latter part of the opening of the breech so as to free the
extractor from the primer. When the breech is being closed the extractor will be
again forced outwards during the first part of the closing motion and again retracted
to its place close to the said vent only when the breech is nearly or completely
closed.

page_text: COMPLETE SPECIFICATION.
Improvements in Breechloading Ordnance.
I, GEORGE QUICK, of 2, Victoria Mansions, in the City of Westminster, Fleet
Engineer Royal Navy Retired, do hereby declare the nature of this invention and
in what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement:-
This invention is applicable to those guns having the breech closed by a screw or to
those wherein the breech is closed by a wedge or sliding block and relates to the
extraction by means of the movement of the breech-screw or breech-block of the
percussion or electric tubes or primers used in firing heavy ordnance.
The extractor is fitted into a recess immediately over the vent and one part is
adapted to grasp the whole or part of the head of the vent-seating tube or primer and
the other part of the extractor is adapted to work in a cam-groove formed in the gun
in such manner that when the breech is closed the extractor shall fit closely over the
vent, but when opening the breech the said extractor shall be powerfully forced
outwards carrying the primer with it during the first portion of the opening and
then retracted during the latter part of the opening of the breech so as to free the
extractor from the primer. When the breech is being closed the extractor will be
again forced outwards during the first part of the closing motion and again retracted
to its place close to the said vent only when the breech is nearly or completely
closed.
And in order that my invention may be thoroughly understood and carried into
practical effect I have caused to be annexed to this specification the accompanying
drawings and shall now refer to the figures and letters of reference marked
thereon.
Fig. 1 is a horizontal section of the rear part of a gun closed ready for firing and
showing the extractor fully home.
Fig. 2 is a plan of the rear part of a gun with the breech-screw removed therefrom
and showing in dotted lines the arrangement of cam-groove I prefer to adopt.
Figs. 3, 3, and 3 are detail views of the construction of extractor, I prefer to
adopt.
In all these figures similar letters of reference indicate corresponding parts.
A is the extractor and B is the cam-groove in the interior of the breech of
the gun.
I prefer to form the extractor A of the main part A formed as shown and into this
-I-screw a stud-"a" which is adapted to engage with the cam-groove B. By this
construction I can insert the extractor. A from the rear of the breech-screw and I then
screw in the screwed stud " 33
a. Or I might so apportion the extractor as to permit
of its being formed in one piece and inserted in the same way.
I may give any form to the cam-groove B and consequently any motion to the
extractor A that may be required.

page_text: I have shown the extractor mechanism as applied only to one type of breech-
loading ordnance though it will be readily perceived that I might apply it to other
types.
By this construction and arrangement of extractor mechanism I am enabled to
dispense with the springs, etc., as hitherto used and to effect the opening of the breech
and the extraction of the primer by the same motion.
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 [
claim is
(1) An extractor mechanism for vent-seating primers consisting of a cam-groove
formed in the interior of the breech of the gun and an extractor fitting into the
breech-screw or breech-block and also into the said cam-groove and operated by
the movement of the said breech-screw or breech-block substantially as and for the
purpose described.
(2) The arrangement and construction of extractor A and cam-groove B subsian-
tially as described and illustrated by the accompanying drawings.
Dated this 3rd day of Santember 1888.
GEORGE QUICK.