IMPROVEMENTS IN THE MANUFACTURE OF CENTRAL FIRE CARTRIDGES.
Year: 1882

page_text: LETTERS PATENT to Charles Stuart Bailey of Waltham Abbey, in the County
of Essex for an Invention of IMPROVEMENTS IN THE MANUFACTURE OF
CENTRAL FIRE CARTRIDGES.
PROVISIONAL SPECIFICATION left by the said Charles Stuart Bailey at
the Office of the Commissioners of Patents on the 31st July 1882.
CHARLES STUART BAILEY of Waltham Abbey in the County of Essex,
"IMPROVEMENTS IN THE MANUFACTURE OF CENTRAL FIRE CARTRIDGES
"
'In the provisional specification of an invention for which former Letters Patent
were granted to me the 1st day of February 1882 No 496 is described an improved
cartridge wherein what is called an inner cup is used in conjunction with an outer
cup that encloses the crown of the percussion cap, and with a paper packing the
arrangement being such that the said inner cup backed up by the paper packing
supports the flange of the cap chamber.
Now my present invention relates to improvements in the manufacture of such
or similar cartridges whereby I am enabled to use an inner iron cup of great
strength and to ensure that its rim shall fill the head of the outer cup in such
manner as to produce a strong bead or rim. For these purposes I form the inner
cup of suitable iron (such as best charcoal sheet iron) with an external annular
concavity and internal annular convexity in its bottom between the outer circum-
ference thereof and the central hole through which the cap chamber is to pass but
as near as practicable to the outer circumference With the cup thus formed the
parts are assembled and afterwards pressed together in a suitable die, and it results
that the metal forming the external annular concavity and internal annular
convexity above referred to is flattened out and a strong annular bead or rim is
simultaneously formed that projects laterally from the base of the cup and
constitutes the rim of the cartridge.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Stuart Bailey in the Great Seal Patent Office on the
31st January 1883.
CHARLES STUART BAILEY of Waltham Abbey, in the County of Essex,
"IMPROVEMENTS IN THE MANUFACTURE OF CENTRAL-FIRE CARTRIDGES."
In the specification of former Letters Patent granted to me the 1st day of
February 1882 No. 496 is described an improved cartridge wherein what is called
an inner cup is used in conjunction with an outer cup that encloses the crown of
the percussion cap, and with a paper packing the arrangement being such that the
said inner cup backed up by the paper packing supports the flange of the cap
chamber.
Fig. 1 of the accompanying sheet of drawings shews in central vertical section to
an enlarged scale such an arrangement of central fire cartridge, 6 being the inner
cup, g the outer cup enclosing the crown of the percussion cap de the anvil,
f the paper packing, and c the cap chamber, maintained in position by its flange
being included within the inner cup 6 and outer cup g.
Now my present invention relates to improvements in the manufacture of such
or similar cartridges whereby I am enabled to use an inner iron cup of great
strength and to ensure that its rim shall fill the head of the outer cup in such
manner as to produce a strong bead or rim. For these purposes I form the inner
cup of suitable iron (such as best charcoal sheet iron) with an external annular
concavity and internal annular convexity in its bottom between the outer circum-.
ference thereof and the central hole through which the cap chamber is to pass, but
as near as practicable to the outer circumference.
This corrugated form is shewn in section in Fig. 2. h is the external annular
concavity, the internal annular convexity, and j the central hole through which
the cap chamber c passes.
With the cup thus formed the parts are assembled, and afterwards pressed
together in a suitable machine, and it results that the metal forming the external
annular concavity h and internal annular convexity i above referred to is flattened
out, and a strong annular bead or rim is simultaneously formed that projects
laterally from the base of the cup as shewn in Fig. 1 and constitutes the rim of the
cartridge.
I prefer to form the thin outer edge of the cup b serrated as shewn Fig. 2. These
serrations or teeth may be about ten to the inch around the side of the cup formed
from a round blank with its circumference so serrated. The serrated edge
facilitates the process of forming and more readily opens out and aids a proper
expansion when the cartridge is discharged.
Having described the nature of the said invention and the manner of carrying
the same into practical effect I would have it understood that what I consider
to be novel and original and therefore claim as the invention secured to me by the
hereinbefore first in part recited Letters Patent is :—
1. In the manufacture of cartridges of the kind above referred to producing a
strong annular bead or rim by the use in combination with the outer cup and cap
chamber of a corrugated inner cup such as b the assembled parts being pressed to

page_text: shape substantially in the manner hereinabove described with reference to the
accompanying sheet of illustrative drawings.
2. In a cartridge of the kind referred to the use as and for the purpose specified
of a corrugated cup with serrated edge..
:
In witness whereof I the said Charles Stuart Bailey have hereunto set my
hand and seal this thirtieth day of January in the year of our Lord one
thousand eight hundred and.eighty three.
CHARLES STUART BAILEY (L.S.)