Improvements in or relating to Attaching the Metallic Caps or Bases on Cartridges.
Year: 1891

page_text: Date of Application, 24th Mar., 1891
.Complete Specification Left, 29th Oct., 1891-Accepted, 5th "Dec., 1891
PROVISIONAL SPECIFICATION.
Improvements in or relating to Attaching the Metallic Caps or Bases
on Cartridges.
A communication from abroad by AUGUSTE ADRIEN MARCEL GAUPILLAT, of
13, Place des Vosges, Paris, in the Republic of France, Engineer.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster, and 323, High Holborn, in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this invention
to be as follows:-
The object of this invention is to provide a simple, solid, and, at the same time,
elegant method of attaching the metallic caps or bases to the end of the cardboard
tube used in all kinds of sporting cartridges.
It consists essentially in forming, on the cylindrical exterior, or metal cap, slots
or grooves of shapes such as are generally obtained by milling or chasing, the.
object. of which is on the one hand to connect the metal cap or base solidly with
the cardboard case in order to prevent these two parts becoming accidentally
separated at the moment when the extractor withdraws the cartridge from the
weapon,,and, on the other hand, to give more rigidity to the cap or base, the metal
of which it is composed being much hardened by the action of the stamp or mill to
which it has been subjected. Finally, the ornamental shape, which can be given
to these slots, yields the further advantage of assisting the ornamentation of the
completed cartridge.
In the manufacture of cartridges according to this invention, the metallic cap or
base has, on the middle part of its cylindrical exterior, a series of slots or
undulations,, preferably formed of equal and equidistant inclined lines, which are
produced by milling or chasing at the time when the cap or base is being
manufactured.
In order to make, the, cartridge, the case or tube of cardboard and the full
cylinder of cardboard are placed in this cap or base, then all the parts are
subjected to the action of a mandrel or stamp which, descending, into the interior,
exercises, a very considerable pressure on the full cardboard cylinder and this
latter, having its..circumference. enlarged by reason of this pressure, causes the
three parts to become solidly. attached to each other, in fact, under the action of
this vigorous pressure, the cardboard of the tube penetrates, and insinuates itself
completely into the slots made in the cap or base, which thus cannot be accidentally
detached from, the tube, however great may be the pull to which it is subjected;
finally, the metal itself of this cap or base, having been strongly hardened by the
milling, has a much greater rigidity than before this operation.
It is further easily understood that these results are obtained, whatever may be
the patterns, and arrangements of the milling, formed on the external circumference
of the breech. Thus the slots or grooves can be arranged in straight or intersected,
curved, or circular lines, and be inclined at any suitable angle, they can also assume
the form of various decorative designs, if desired, and can even consist of a number
of letters or figures, and, thus reproduce the name or signature of the manufacturer.
It is also understood that the system is.applicable to every kind of cartridge,
whether central, or, pin fire; it is, however, evident that it is particularly suitable
for the latter, which do not allow of the use of a heavy socket, in which the base of
the cardboard tube,can be fixed, and, consequently, solidly held; and that especially

page_text: where the cap or base itself is of small height and is thus liable not to hold the
tube sufficiently strongly during the extraction of the spent cartridge.
Dated this 23rd day of March 1891.
WM. P. THOMPSON & Co.,
Agents for the Applicant.
'
UMI IR
Improvements in or relating to Attaching the Metallic Caps or Bases
on Cartridges.
A communication by AUGUSTE ADRIEN MARCEL GAUPILLAT, of 13, Place des
Vosges, Paris, in the Republic of France, Engineer.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool, and 6, Bank Street,
Manchester both in the County of Lancaster and 323, High Holborn in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this inven-
tion 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 provide a simple, solid, and, at the same time,
elegant method of attaching the metallic caps or bases to the end of the cardboard
tube used in all kinds of sporting cartridges.
It consists essentially in forming, on the cylindrical exterior, or metal cap, slots
or grooves of shapes such as are generally obtained by milling or chasing, the
object of which is on the one hand to connect the metal cap or base solidly with
the cardboard case in order to prevent these two parts becoming accidentally
separated at the moment when the extractor withdraws the cartridge from the
weapon, and, on the other hand, to give more rigidity to the cap or base, the metal
of which it is composed being much hardened by the action of the stamp or mill to
which it has been subjected. Finally, the ornamental shape, which can be given
to these slots, yields the further advantage of assisting the ornamentation of the
completed cartridge.
In order that the invention may be more easily understood, a specimen is shown
on the accompanying drawing of a sporting cartridge having a breech piece, the
milled ornamentation of which is composed of parallel inclined slots.
Figure 1 is an elevation of a cartridge with milled breech piece.
Figure 2 is a transverse section.
In the manufacture of cartridges according to this invention, the metallic cap or
base A has, as shown on the drawing on the middle part of its cylindrical exterior,
a series of slots or undulations a preferably formed of equal and equidistant inclined
lines, which are produced by milling or chasing at the time when the cap or base is
being manufactured.
In order to make the cartridge, the case or tube B of cardboard and the full
cylinder of cardboard C are placed in this cap or base, then all the parts are
subjected to the action of a mandrel or stamp which, descending into the interior,
exercises a very considerable pressure on the full cardboard cylinder C and this
latter, having its circumference enlarged by reason of this pressure, causes the
three parts to become solidly attached to each other, in fact, under the action of
this vigorous pressure, the cardboard of the tube B penetrates, and insinuates itself
completely into the slots made in the cap or base A which thus cannot be
accidentally detached from the tube, however great may be the pull to which it is
subjected; finally, the metal itself of this cap or base, having been strongly
hardened by the milling, has a much greater rigidity than before this operation.
It will further be easily understood that these results are obtained, whatever
may be the patterns and arrangements of the milling, formed on the external
circumference of the breech. Thus the slots or grooves can be arranged in straight

page_text: or intersected, curved, or circular lines, and be inclined at any suitable angle, they
can also assume the form of various decorative designs, if desired, and can even
consist of a number of letters or figures, and thus reproduce the name or signature
of the manufacturer.
It is also understood that the system is applicable to every kind of cartridge,
whether central or pin fire; it is, however, evident that it is particularly suitable
for the latter, which do not allow of the use of a heavy socket, in which the base of
the cardboard tube can be fixed, and, consequently, solidly held; and that especially
where the cap or base itself is of small height and is thus liable not to hold the
tube sufficiently strongly during the extraction of the spent cartridge.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is :-
1. A metallic cap or base piece for cartridges having slots or depressions on its
circumference intended to penetrate into the cardboard tube of the cartridge for
the purpose and in the manner hereinbefore described.
2. In the manufacture of sporting cartridges with metallic cap or base pieces, the
combination with the cardboard tube B of the cartridge, of a thin metallic socket,
such as A, having on its circumference slots or depressions which penetrate
transversely into the tube B aforesaid in consequence of pressure applied in the
interior of the cartridge by a punch which is inserted therein in order to complete
the manufacture: substantially as hereinbefore described and shown on the accom-
panying drawings.
Dated this 00th day of October 1801
WM. P. THOMPSON & Co.,
Agents for the Applicant.