IMPROVEMENTS IN METAL CARTRIDGES
Year: 1874

page_text: LETTERS PATENT to Ernst Engel, Merchant, of St. Petersburg,
Russia, for the Invention of "IMPROVEMENTS IN METAL CARTRIDGES."
PROVISIONAL SPECIFICATION left by the said Ernst Engel at the
Office of the Commissioners of Patents, with his Petition, on the
12th October 1874.
I, ERNST ENGEL, Merchant, of St. Petersburg, Russia, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN METAL
CARTRIDGES," to be as follows:-
The metallic cartridges heretofore manufactured have had a smooth
exterior and interior surface, and my Invention consists in forming the
cartridge cases with longitudinal internal ribs and external grooves, by
which form of construction the cases become more durable and the
cartridges more secure. These ribs and grooves are, by preference, of a
spiral form, but they may be varied in form and number without

page_text: departing from the spirit of my Invention; and in some cases it may bẹ
preferable to dispense with either the external grooves or the internal
ribs, while the other surface is formed as described.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Ernst Engel in the Great Seal Patent Office on t
the 19th March 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ERNST
ENGEL, Merchant, of St. Petersburg, Russia, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twelfth day of October, in the year 1
of our Lord One thousand eight hundred and seventy-four, in the
thirty-eighth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Ernst Engel, Her special
licence that I, the said Ernst Engel, my executors, administrators,
and assigns, or such others as I, the said Ernst Engel, my executors, 1
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN 2
METAL CARTRIDGES," upon the condition (amongst others) that I, the
said Ernst Engel, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention,
and in what manner the same was to be performed, and cause the same 2
to be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
.NOW KNOW YE, that I, the said Ernst Engel, do hereby declare the
nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the 8
following statement, reference being had to the accompanying Drawing
forming a part of this Specification :—
The metallic cartridges heretofore manufactured have had a smooth.
exterior and interior surface, but my Invention consists in forming the

page_text: cartridge cases with longitudinal internal ribs and external grooves, or
either of them, by which form of construction the cases are made more
durable and the cartridges more safe.
In the accompanying Drawing Figures 1 and 5 represent side views,
Figures 2 and 6 longitudinal sections, Figures 3 and 7 transverse
sections, and Figures 4 and 8 end views of two improved metal cartridges
A and B.
The said internal ribs and corresponding external cavities are preferably
disposed as represented in the Drawing.
It is obvious that the form, number, and disposition of the internal
ribs and external cavities, and also the form and dimensions of the
cartridge itself, can be modified without altering the principal features
of my Invention.
Having thus fully described my said Invention, and the manner of
performing the same, I wish it understood that I claim,—
First. A cartridge fitted with internal ribs and external cavities or
grooves, substantially as described and illustrated by the accompanying
Drawing.
Second. A cartridge fitted with internal ribs alone without external
grooves or cavities.
Third. A cartridge fitted with external grooves or cavities alone with-
out internal ribs.
In witness whereof, I, the said Ernst Engel, have hereunto set
my hand and seal, this Twenty-sixth day of February, in the
year of our Lord One thousand eight hundred and seventy-five.
Witness,
FREDERICK Kaupe.
ERNST ENGEL. (L.S.)