IMPROVE- MENTS IN MOULDS FOR STEEL CASTINGS
Year: 1853

page_text: LETTERS PATENT to Ewald Riepe, of Finsbury Square, in the
County of Middlesex, Chemist, for the Invention of "IMPROVE-
MENTS IN MOULDS FOR STEEL CASTINGS."-A communication.
PROVISIONAL SPECIFICATION left by the said Ewald Riepe at
the Office of the Commissioners of Patents, with his Petition, on
the 9th July 1858.
I, EWALD RIEPE, of Finsbury Square, in the County of Middlesex,
Chemist, do hereby declare the nature of the said Invention for "Ix-
PROVEMENTS IN MOULDS FOR STEEL CASTINGS" to be as follows:-
I form the body of my moulds of the same materials as those
ordinarily employed in metal castings, in loam, or of any similar suitable
material, but all those parts which are to come in direct contact with
the steel are formed of a fire-proof mixture, which will become
spongious or porous when dry, and which will at the same time be
sufficiently cohesive and plastic to enable it to be moulded into any
shape required, and when in such shape to resist the pressure of the
steel while being poured in, and sufficiently fire-proof to resist the heat
of the metal.

page_text: The mixture I have found best to answer these requirements is
composed of one part of rich fire-clay, and five parts of stuff produced
by pounding and reducing to powder crucibles that have been employed
for the melting of steel; but I reserve to myself the right of forming
moulds for casting steel, faced in those parts which will come in
I contact with the steel, with a mixture possessing the before-named
Qualities
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Ewald Riepe in the Great Seal Patent Office,
on the 9th January 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
EWALD RIEPE, of Finsbury Square, in the County of Middlesex, Chemist,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of July, in the year of
our Lord One thousand eight hundred and fifty-three, in the seven-
teenth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Ewald Riepe, Her special licence
that I, the said Ewald Riepe, my executors, administrators, and assigns,
or such others as I, the said Ewald Riepe, 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 MOULDS FOR STEEL
CASTINGS, (a communication,) upon the condition (amongst others)
that I, the said Ewald Riepe, by an instrument in writing under my
hand and seal, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was to be per-
formed, and cause the samic 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 Ewald Riepe, do hereby declare
the nature of the said Invention, and in what manner the same is to be

page_text: performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say:
I form the body of my moulds of the same materials as those
ordinarily employed in metal castings, in loam, or of any similar suitable
material; but all those parts which are to come in direct contact with
the steel are formed of a fire-proof mixture or composition, which will
become spongeous or porous when dry, and which will at the same
time be sufficiently cohesive and plastic to enable it to be moulded into
any shape required, and when in such shape to resist the pressure of
the steel while being poured in, and sufficiently fire-proof to resist the
heat of the metal. The composition I have found best to answer these
requirements is formed of one part of rich fire-clay, and five parts of
stuff produced by pounding and reducing to powder crucibles which
have been employed for the melting of steel; but I reserve to myself
the right of forming moulds for casting steel, faced in those parts which
will come in contact with the steel, with a mixture possessing the
before-named qualities.
And having now described the nature of the said Invention, and
what manner the same is to be performed, I declare that I claim,
the forming those parts of moulds for steel castings where the metal
is to come in contact with them of a composition possessing the
properties herein-before described.
In witness whereof, I, the said Ewald Riepe, have hereunto set
my hand and seal, this Ninth day of January, One thousand
eight hundred and fifty-four.
E. KIEPE. (L.S.)