Improvements in Practice Tubes for Breech Loading Ordnance.
Year: 1897

page_text: Date of Application, 20th Nov., 1897
Complete Specification Left, 19th Aug., 1898-Accepted, 24th Sept.,
1898
PROVISIONAL SPECIFICATION.
Improvements in Practice Tubes for Breech Loading Ordnance.
We, EDWARD WILLIAM LLOYD, late Commander Royal Navy, and ALBERT
GEORGE HADCOCK, late R.A., both of Elswick Works, Newcastle-upon-Tyne, do
hereby declare the nature of this invention to be as follows:-
The object of this invention is to so arrange the breech mechanism of the
practice tube that the breech of the latter opens and closes with the breech block
of the gun.
For this purpose the breech block of the tube is hinged to the rear support of
the tube or it might be to the rear end of the tube itself and the rear of the block
is so formed that when the breech block of the gun is moved, or is turned about
its pivot, to close the breech of the gun it carries the breech block of the tube
with it turning it about its pivot and closes the breech of the tube. When the
breech of the gun is opened the extractor in removing the case of the miniature
cartridge opens the breech of the tube..
Or the breech block of the tube may be fixed to the breech block of the gun.
Dated this 20th day of November 1897.
EDWARD W. LLOYD.
A. G. HADCOCK.
We, EDWARD WILLIAM LLOYD, late Commander Royal Navy, and ALBERT
GEORGE HADCOCK, late R.A., both of Elswick Works, Newcastle-upon-Tyne, 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:
The object of this invention is to so arrange the breech mechanism of the
practice tube that the breech of the latter opens and closes with the breech block
of the gun.
For this purpose the breech block of the tube is hinged to the rear support of
the tube or it might be to the rear end of the tube itself and the rear of the block
is so formed that when the breech block of the gun is moved, or is turned about
its pivot, to close the breech of the gun, it carries the breech block of the tube
with it turning it about its pivot and closes the breech of the tube. When the
breech of the gun is opened the extractor in removing the case of the miniature
cartridge opens the breech of the tube.

page_text: Or the breech block of the tube may be fixed to the breech block of the gun.
Figure 1 is a rear elevation, and Figure 2 a longitudinal section, of a practice
tube, constructed according to this invention.
a is the barrel, b its rear support, and c the breech block pivotted at c¹ to the
support b. d is the extractor by which the empty practice cartridge is extracted
by hand after the breech of the practice tube has been opened.
Figure 3 is a rear elevation, and Figure 4 a longitudinal section, of a modifica-
tion. In this case the breech block c, shown in front elevation at Figure 5, is
fixed to the breech block e of the gun.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is: :-
1. Aiming tubes in which the closing of the breech of the gun closes the breech
of the tube substantially as described.
2. Aiming tubes substantially as described and illustrated in the drawings.
00
L
3
1
1000
EDWARD W. LLOYD.
A. G. HADCOCK.