Improvements in Waterproof Cartridge Cases.
Year: 1898

page_text: We, KYNOCH LIMITED, of Lion Works, Witton, in the County of Warwick,
Manufacturers, and GEORGE HOOKHAM, of New Bartholemew Street, in the
City of Birmingham, Manufacturer, do hereby declare the nature of this inven-
tion to be as follows:-
-:
Our invention relates to improvements in waterproof cartridge cases to be
used for sporting purposes. In the present method of rolling cartridges from
pasted paper strip, it very frequently happens that consecutive layers do not
adhere sufficiently at places, with the result that blistering takes place in firing
the cartridge.
The object of our invention is to obviate this difficulty and to provide a strong
and reliable cartridge case which shall also be thoroughly waterproof.
Part of our invention consists in applying pressure by a roller or other tool,
which is of the required shape of the case, to the pasted strip as it is rolled.
By this means the paste is uniformly spread between the layers, and squeezed
out as much as possible; consequently perfect adherence of the layers to one
another is obtained.
In subsequent treatment for waterproofing, according to another part of our
invention, the cases are dried, and glazed by forcing them through a die in any
usual manner. They are then immersed for about two hours in a bath of
paraffin wax, heated to about 160° Fah., so that they may become thoroughly
impregnated with the wax. The wax is then dried off by exposing them in
an oven for about twenty or thirty minutes to a temperature of about 180° Fah.
The tubes are then supplied with the metal caps to form the complete cartridge
cases. These are packed in trays and immersed up to the metal caps in a bath
of celluloid varnish, and then dried. Cases so prepared are found to be
thoroughly waterproof.
1.
1000
MARKS & CLERK,
Agents for the Applicants.
Improvements in Waterproof Cartridge Cases.
We, KYNOCH LIMITED, of Lion Works, Witton, in the County of Stafford,
Manufacturers, and GEORGE HOOKHAM, of New Bartholemew Street, in the
City of Birmingham, Manufacturer, 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:-
-
Our invention relates to improvements in waterproof cartridge cases to be

page_text: used for sporting purposes. In the present method of rolling cartridges from
pasted paper strip it very frequently happens that consecutive layers do not
adhere sufficiently at places, with the result that blistering takes place in firing
the cartridge.
The object of our invention is to obviate this difficulty and to provide a strong
and reliable cartridge case which shall also be thoroughly waterproof.
Part of our invention consists in applying pressure by a roller or other tool,
which is of the required shape of the case, to the pasted strip as it is rolled.
By this means the paste is uniformly spread between the layers, and squeezed
out as much as possible; consequently perfect adherence of the layers to one
another is obtained.
In subsequent treatment for waterproofing, according to another part of our
invention, the cases are dried, and glazed by forcing them through a die in any
usual manner. They are then immersed for about two hours in a bath of
paraffin wax, heated to about 160 Fah., so that they may become thoroughly
impregnated with the wax. The wax is then dried off by exposing them in
an oven for about twenty or thirty minutes to a temperature of about 180 Fal.
The tubes are then supplied with the metal caps to form the complete cartridge
cases. These are packed in trays and immersed up to the metal caps in a bath
of celluloid varnish, and then dried. Cases so prepared are found to be
thoroughly waterproof.
It is obvious that other wax than paraffin may be used for impregnating the
cases, and that other varnish than celluloid may be used for coating them.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that
what we claim is:-
1. The process of manufacturing waterproof cartridge cases substantially as
herein before described.
2. The process of waterproofing cartridge cases substantially as herein before
described.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., Agents.