IMPROVEMENTS IN THE CONSTRUCTION OF POWDER FLASKS.
Year: 1864

page_text: LETTERS PATENT to Frederick Alexander Preston Pigou, of 34, Throg-
morton Street, City of London, Gunpowder Manufacturer, for the
Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF POWDER FLASKS.".."
PROVISIONAL SPECIFICATION left by the said Frederick Alexander
Preston Pigou at the Office of the Commissioners of Patents, with his
Petition, on the 12th April 1864.
.. I, FREDERICK ALEXANDER PRESTON PIGOU, of 34, Throgmorton Street, City.
of London, Gunpowder Manufacturer, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN THE CONSTRUCTION OF POWDER FLASKS," to
be as follows, that is to say :-
My Invention consists in the method of regulating the supply of gunpowder
to the nozzles of powder flasks. To effect this I make use of a slide, preferably
of metal, which I place immediately beneath the circular plate, which unscrews
for the admission of the powder to the flask. This slide moves in guides or
otherwise as most convenient, and has formed in it an opening corresponding
to the aperture in the plate, over which the nozzle is fixed. A shank ter-
minated in a button projects through the side of the flask for the purpose of
acting on the slide when wished, and has formed on it a stud or projection
against which presses a spring of suitable strength. When a charge of.
powder is required pressure is applied to the button on the shank connected.
with the slide, which brings the opening in the slirle so as to coincide with the'.

page_text: aperture in the circular plate before mentioned, and of course the powder
On the pressure being removed from the button the spring brings
back the slide and closes the opening in the plate.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Frederick Alexander Preston Pigou in the Great Seal
Patent Office, on the 12th October 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FREDERICK
ALEXANDER PRESTON PIGOU, of 34, Throgmorton Street, City of London, Gun-
powder Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twelfth day of April in the year of our Lord One
thousand eight hundred and sixty-four, in the twenty-sixth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Frederick Alexander Preston Pigou, Her special licence that I, the said
Frederick Alexander Preston Pigou, my executors, administrators, and
assigns, or such others as I, the said Frederick Alexander Preston Pigou,
my executors, 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 THE CON-
STRUCTION OF POWDER FLASKS," upon the condition (amongst others) that I, the
said Frederick Alexander Preston Pigou, 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
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 Frederick Alexander Preston Pigou, 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 following statement, that is to say:-
My Invention consists in the method of regulating the supply of gunpowder
to the nozzles of powder flasks. To effect this I make use of a slide, preferably
of metal, which I place immediately beneath the circular plate which forms
the head or top of the flask. This slide moves in guides or otherwise as most

page_text: described in this Specification and the accompanying Drawings, or of any
other well-known equivalent for these parts which effects in a similar way the
closing and opening of the said disc.
In witness whereof, I, the said Frederick Alexander Preston Pigou,
have hereunto set my hand and seal, this Twelfth day of October, in
the year of our Lord One thousand eight hundred and sixty-four.