Improvements in and relating to the Cartridge Shell Extracting Mechanism of the Tubes of Revolvers Adapted for Practice with Miniature Ammunition.
Year: 1893

page_text: •
Date of Application, 20th Dec., 1893
Complete Specification Left, 20th Sept., 1894-Accepted, 20th Oct., 1894
PROVISIONAL SPECIFICATION.
Improvements in and relating to the Cartridge Shell Extracting
Mechanism of the Tubes of Revolvers Adapted for Practice with
Miniature Ammunition.
I, JOHN TOLHURST MUSGRAVE, of 27 Pall Mall, in the County of Middlesex,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to the cartridge shell extracting mechanism of the tube
inserted in the cylinder and barrel of a revolver to adapt it for practice with
miniature ammunition, and has for object, in a simple and effectual manner to
facilitate, by rendering same automatic, the return of the tube extractor after
usage.
a
When the revolver is so adapted for practice with miniature ammunition as
aforesaid, the extractor of the revolver, when actuated, withdraws that of the tube,
and thereby extracts the cartridge shell from the cylinder of the revolver; but
though the revolver extractor, after performing this function, returns automatically
by means of springs provided, the extractor portion of the tube remains extended,
and it has hitherto been necessary to replace same by hand. Now by this inven-
tion I so construct, arrange, and adapt the extractor portion of the tube that it may
be also acted upon by the revolver extractor during the return stroke of the latter,
and thereby I render the replacing of the tube extractor also automatic, whereby
greater rapidity of action is attained, and the inconvenience formerly experienced
in performing this operation is entirely obviated. To accomplish this I have a
small spring held in position by a lump and slot on the under side of the tube
extractor. This spring, as the tube extractor (by the action of the revolver
extractor) is withdrawn from the cylinder of the revolver, drops from the slot in
the tube extractor and projects in front of the revolver extractor. This latter, in
its automatic return, engages with the projecting spring aforesaid and carries with
it in its stroke the tube extractor with which said spring is in connection, thus
rendering its return also automatic. The projecting spring as it is forced into
the cylinder is pressed by same into the recess or slot formed in the tube extractor,
and there it remains until the extractor is again withdrawn.
Dated the 20th day of December 1893.
J. T. MUSGRAVE.
COMPLETE SPECIFICATION.
Improvements in and relating to the Cartridge Shell Extracting
Mechanism of the Tubes of Revolvers Adapted for Practice with
Miniature Ammunition.
I, JOHN TOLHURST MUSGRAVE, of 27 Pall Mall, in the County of Middlesex,
Engineer, 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 :-
This invention relates to the cartridge shell extracting mechanism of the tube
inserted in the cylinder and barrel of a revolver to adapt it for practice with
miniature ammunition, and has for object in a simple and effectual manner to
facilitate, by rendering same automatic, the return of the "tube extractor" after
usage. When the revolver is so adapted for practice with miniature ammunition

page_text: as aforesaid the extractor of the revolver when actuated withdraws that of the tube
and thereby extracts the cartridge shell from the cylinder of the revolver, but
though the revolver extractor, after performing this function, returns automatically
by means of springs provided, the extractor portion of the tube remains extended,
and it has hitherto been necessary to replace same by hand.
Now, by this invention, I so construct, arrange, and adapt, the extractor portion
of the tube that it may be also acted upon by the revolver extractor during the
return stroke of the latter, and thereby I render the replacing of the "tube
extractor" also automatic, whereby greater rapidity of action is attained, and the
inconvenience formerly experienced in performing this operation is entirely obviated.
And in order that this my invention may be fully understood and readily carried
into effect I will now proceed to describe same with reference to the accompanying
drawings in which similar letters of reference indicate like parts in each of the
figures.
Fig. 1 is a side sectional elevation of the breech end of the barrel of the fire arm
fitted with practice tube, and in which my improvements are illustrated. In this
view the breech is shewn closed.
Fig. 2 is a similar view but in which the breech is shewn open, the extractor
having been drawn out to extract the cartridge shell.
Fig. 3 is an end elevation of the same; and
Fig. 4 is an inverted plan of the extractor portion of the practice tube constructed
in accordance with this invention.
"
a is the barrel of the revolver into which the practice tube is inserted. c is the
extractor portion of the practice tube, and on the underside of this "tube
extractor I have a small spring d or its equivalent shewn in dotted lines in
Figs. 1 and 3, partly in dotted and partly in full lines Figs. 2 and 4. Said spring d
may be held in position by a lump and slot, or in any convenient manner. As the
"tube extractor "
c (by the action of the revolver or main extractor e) is withdrawn
from the cylinder of the revolver (see particularly Fig. 2) the spring d or its
equivalent drops through the slot (Fig. 4) in the tube extractor and projects in
front of the revolver or main extractor e. This latter in its automatic return
engages with the projecting spring d aforesaid, and carries with it in its stroke the
"tube extractor c with which said spring d is connected, thus rendering its return
also automatic. The spring d as it is forced into the cylinder of the revolver is
pressed by same into the recess or slot f formed in the "tube extractor'
there remains till the extractor is again withdrawn.
"
"
c, and
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. The improvements in, and relating to, the cartridge shell extracting mechanism
of the tubes of revolvers adapted for practice with miniature ammunition,
substantially as and for the purposes hereinbefore described and shewn in the
accompanying drawings.
2. In the cartridge shell extracting mechanism of the tubes of revolvers adapted
for practice with miniature ammunition, the spring d or its equivalent in combination
with the extractor portion of the practice tube, all arranged and operating
substantially as, and for the purposes, hereinbefore described and shewn.
J. T. MUSGRAVE.