IMPROVEMENTS IN CRIMPING AND CORRUGATING METAL CARTRIDGE CASES, AND IN THE MACHINERY OR APPARATUS THEREFOR"
Year: 1882

page_text: LETTERS PATENT to William Wellington Greener of 62 Loveday Street
Birmingham in the County of Warwick Gun Maker for an Invention of
"IMPROVEMENTS IN CRIMPING AND CORRUGATING METAL CARTRIDGE CASES,
AND IN THE MACHINERY OR APPARATUS THEREFOR"
PROVISIONAL SPECIFICATION left by the said William Wellington
Greoner at the Office of the Commissioners of Patents on the 8th February
1882.
WILLIAM WELLINGTON GREENER, of 62 Loveday Street, Birmingham, in the
County of Warwick, Gun Maker, "IMPROVEMENTS IN CRIMPING AND CORRUGATING
METAL CARTRIDGE CASES, AND IN THE MACHINERY OR APPARATUS THEREFOR,'
"
This Invention consists in the crimping or corrugating of metal cartridge cases,
from the mouth of the case, to the wad over the charge by means of longtitudinal
furrows, made after the cartridge case is charged, and the construction and
combination of parts of a machine, necessary to produce such corrugation.
The crimping or corrugation is requisite for holding the wadding and chargo in
its proper position in the cartridge case, and to effect this I crimp in the case above
the charge, until it presents a corrugated surface, extending longitudinally from
the wadding to the mouth of the case, by means of the following mechanism.
I construct a cylindrical head having an internal diameter slightly larger than
the external diameter of the cartridge case to be crimped. Projecting into the
interior of this cylinder I place seven studs (or any other number suitable to the
size of the case) all equidistant from the mouth of the cylinder and each so bevelled
off as to present an inclined plane to the mouth of the cylinder.
Onto this cylinder I fix a mandril having its external diameter slightly smaller
than the internal diameter of the cartridge case to be crimped, the bead of this
mandril projects into the cylinder until its face or forward extremity and the
projecting studs are equidistant from the mouth of the cylinder. The space between
the surface of the mandril and the projecting studs at the point of their greatest
--

page_text: projection being equal (or nearly so) to the thickness of the metal of the cartridgo
case to be crimped.
Into the face of the mandril I cut a recess in which I fit a piston with a rod
attached, such rod projecting beyond the rear extremity of the mandril.
The office of the piston and rod is to force out the cartridge case from the
cylinder after crimping.
To crimp the charged cartridge case its nozzle is forced into the cylinder (either
by hand or suitable apparatus) the projecting studs force grooves into the case, of
a depth equal to the difference between the internal diameter of the cartridge case
and the external diameter of the mandril. The face of the mandril coming into
contact with the wad upon the charge, determines the longitudinal extent of the
crimping and likewise acts as a rammer, forcing the wadding home upon the charge,
where it is secured by the corrugation.
The sinaller sizes of metal cartridge cases, may thus be crimped by forcing the
case unto the cylinder by the hand, the larger sizes, or if of harder or thicker
metal, I force into the cylinder by means of a hand lever, or in a press, the lever
I make to act upon the base of the cartridge case, forcing it into the cylinder, or I
force down the cylinder upon the cartridge case, or should it be necessary to crimp
or corrugate cartridges in quantities, I arrange a number of cylinders so as to
coincide with the distances at which cartridge case are arranged in the cartridge
loader and actuate the whole of the cylinders and crimping gear simultaneously by
means of a lever or screw press, and in this case I dispense with the ejecting piston
and rod, which however is not a necessary adjunct to my Invention.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Wellington Greener in the Great Seal Patent Office on
the 8th August 1882.
WILLIAM WELLINGTON GREENER, of 62 Loveday street, Birmingham, in the
County of Warwick, Gun Maker, "IMPROVEMENTS IN CRIMPING AND CORRUGATING
METAL CARTRIDGE CASES, AND IN THE MACHINERY OR APPARATUS THEREFOR,"
This Invention consists in the crimping or corrugation of metal cartridge cases,
from the mouth of the case to the wad over the charge, by means of longitudinal
furrows made after the cartridge case is charged, for the purpose of holding the
shot wad firmly.in the metallic cases, and to prevent the same from becoming loose
or falling out in double barrel guns, on the discharge of one barrel; and to prevent
such loosening or falling out from any other causo in single or double barrel guns.
And in the construction and combination of parts of machines necessary to produce
such corrugation. The crimping or corrugation is requisite for holding the
wadding and charge in their proper positions in the cartridge case, and to effect
this I crimp in the case above the charge until it presents a corrugated surface
extending longitudinally from the wadding to the mouth of the case by means of
the following mechanism;-I construct a cylindrical head, A, Fig. 1. having an
internal diameter slightly larger than the external diameter of the cartridge case
to be crimped, as shown in Fig. 1. Projecting into the interior of this cylinder I
place seven, six or any other number of studs, as shown in Fig. 3, suitable to the
size of the case, all equidistant from the mouth of the cylinder, and each so bevelled
off as to present an inclined plane to the mouth of the cylinder. On to this
cylinder I fix a mandril having its external diameter slightly smaller than tho
internal diameter of the cartridge case to be crimped, as shewn in Fig. 1, C C.
The head of this mandril projects into the cylinder until its face or forward
extremity and the projecting studs are equidistant from the mouth of the cylinder.
The space between the surface of the mandril and the projecting studs, Fig. 1. B. B,
at the point of their greatest projection being equal (or nearly so) to the thickness
of the metal of the cartridge case to be crimped. Into the face of the mandril I
cut a recess in which I fix a piston Fig. 1 D with a rod attached and said rod
projecting beyond the rear extremity of the mandril. The office of this piston and
rod is to force out the cartridge from the cylinder after crimping. To crimp the
charged cartridge case its nozzle is forced into the cylinder (either by hand or a
suitable apparatus). The projecting studs force grooves into the case of a depth
equal to the difference between the internal diameter of the cartridge case and the
external diameter of the mandril. The face of the mandril coming into contact
with the wad upon the charge, determines the longitudinal extent of the crimping,
and likewise acts as a rammer forcing the wadding home upon the charge, where
it is secured by the corrugation.
The smaller sizes of metal cartridge cases may thus be crimped by forcing the
case into the cylinder by the hand. The larger size, or those of harder or thicker
metal, I force into the cylinder by means of a hand lever, as shown at H Fig. 2, or
in a press. The lever I make to act upon the base of the cartridge case, or the
cartridge case can be forced into the cylinder A by means of a screw lever H, seo
Fig. 8, or should it be necessary to crimp or corrugate a quantity of cartridges I
arrange a number of cylinders so as to coincide with the distances at which
cartridge cases are arranged in the cartridge louder, and actuate the whole of
the cylinders and crimping gear simultaneously by means of a lover or screw press,
and in this case 1 dispense with the ejecting piston and rod D. E. F. Fig. 1, which
however is not a necessary adjunct to my Invention.