Improvements in the Manufacture of Cartridge-cases.
Year: 1893

page_text: Date of Application, 23rd May, 1893
Complete Specification Left, 22nd Feb., 1894-Accepted, 24th Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Cartridge-cases.
I, JAMES PURVIS, of 4 Water Lane, Gt. Tower Street, in the City and County
of London, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to the manufacture of paper cartridge-cases and more
especially to those used for sporting purposes, and is designed to cheapen such
manufacture and improve the quality of the cases.
Heretofore it has been usual to make sporting cartridge-cases of various colours
i.e. blue, green or otherwise, and for this purpose the cylindrical body of the case
which is made of ordinary brown paper rolled or coiled upon a mandrel, is covered
with a strip of paper of the desired colour secured by paste on the outside of the
brown paper while being rolled. After this coloured paper is pasted on, the case
is dried and is then finished in a sizing and glazing machine.
This method of obtaining the desired colour of the cartridge-case is objectionable
for the reasons that the coloured paper, and also the preparation and application of
the same to the case, add considerably to the cost of manufacture. And moreover
the action of the glazing machine is somewhat uncertain so that a considerable
number of the cases are wasted.
Now according to my invention I obtain cartridge cases of any desired colour
and free from the above objections by the following method of manufacture, that is
to say, I first make the case of a single strip or sheet of brown or other suitable
paper by rolling it on a mandrel into a cylindrical form. I then dry it and pass it
through the die or dies of a sizing machine to bring it accurately to the required
diameter. I then place the said case on another mandrel and apply to its surface
by a brush or other suitable means a paint or enamel of the desired colour. During
this process, this mandrel should be kept in rotation. The composition of this
paint or enamel must be such that it will dry very quickly so that in the application
thereof to the cartridge case it will not remain moist or wet for a sufficient time to
allow its moisture to penetrate or affect the paper of which the case is formed, and
it must also be such as will make the surface of the case water-proof.
When dried, the cylindrical case is ready to be subjected to the further process
required in the manufacture of the cartridge.
1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Cartridge-cases.
I, James PurvIS, of 4 Water Lane, Great Tower Street, in the County of
London, 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 :-
My invention relates to the manufacture of paper cartridge cases and more
especially to those used for sporting purposes and is designed to cheapen such
manufacture and improve the quality of the cases.

page_text: Heretofore it has been usual to make sporting cartridge cases of various colours
i.e. blue, red, green or other colour and for this purpose the cylindrical body of the
case which is made of ordinary brown paper rolled or coiled upon a mandrel, is
covered with a strip of paper of the desired colour secured by paste on the outside
of the brown paper while being rolled. After this coloured paper is pasted on, the
case is dried and is then finished in a sizing or glazing machine, or by other means
which operate to compress and smooth the paper cylinder.
This method of obtaining the desired colour of the cartridge case is objectionable
for the reasons that the coloured paper and also the preparation and application
of the same to the case add considerably to the cost of manufacture. And more-
over the action of the paste and of the glazing machine is somewhat uncertain
so that a considerable number of the cases are blistered and wasted.
Now according to my invention I obtain cartridge cases of any desired colour
and free from the above objections by the following method of manufacture,
that is to say, I first make the case of a single strip or sheet of brown or
other suitable paper by rolling it on a mandrel into a cylindrical form. I then
dry it and pass it through the die or dies of a sizing or glazing machine to
bring it accurately to the required diameter, and to remove all wrinkles from
the tube. I then place the said case on another mandrel and apply to its
surface by a brush or other suitable means a waterproof paint, enamel or
varnish or other suitable colouring material. During this process the last named
mandrel should be kept in rotation. The composition of this paint, enamel or
varnish must be such that it will dry very quickly so that in the application
thereof to the cartridge case it will not remain moist or wet for a sufficient
time to allow its moisture to penetrate or affect the paper of which the case is
formed, and it must also be such as will make the surface of the case waterproof.
When dried the cylindrical case is ready to be subjected to the further process
required in the manufacture of the cartridge.
Instead of colouring the cases or cylinders before the component parts are
put together to make up a complete cartridge I sometimes make up the cartridge
complete and then apply the colour to the case in the manner above stated.
One very important advantage of this mode of procedure is that the colour being
applied after the cartridge is made up, cartridges of one colour only need be kept
in stock by manufacturers, the same being coloured as desired to suit the purchaser
when the orders are received.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
1. The process or method of colouring a cartridge case, either before or after
making up the cartridge, substantially as hereinabove described for the purpose
specified.
°
2. A cartridge case which has been coloured by the method substantially as
hereinabove described.
inabove described.
Dated this 22nd day of February 1834.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
pated this 22nd day of February 104.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.