IM- PROVEMENTS IN THE CONSTRUCTION OF MOULDS FOR MOULDING METALS, AND IN THE COMBINATION OF MATERIALS FOR THE SAME
Year: 1873

page_text: LETTERS PATENT to William Beecroft, of Barrow-in-Furness, in the
County of Lancaster, Iron Moulder, for the Invention of "IM-
PROVEMENTS IN THE CONSTRUCTION OF MOULDS FOR MOULDING METALS, AND IN
THE COMBINATION OF MATERIALS FOR THE SAME.”
Sealed the 27th June 1873, and dated the 1st April 1873.
PROVISIONAL SPECIFICATION left by the said William Beecroft at
the Office of the Commissioners of Patents, with his Petition, on
the 1st April 1878.
I, WILLIAM BEECROFT, of Barrow-in-Furness, in the County of
Lancaster, Iron Moulder, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN THE CONSTRUCTION OF MOULDS FOR MOULDING
METALS, AND IN THE COMBINATION OF MATERIALS FOR THE SAME," to be as
follows:-
-
My Invention has for its object an improvement in the construction
of moulds for moulding metals whereby several castings may be made
rom such moulds without the necessity of reforming them; and consists

page_text: in the application and use of a peculiar combination of burnt fire-clay,
loam sand, and common clay worked and combined together with water
to a proper consistency for moulding.
In carrying out my Invention I take one part of slagg cinder, one
part of loam clay, four parts of burnt fire-clay, and four parts of loam 5
sand. I grind each of these materials separately into fine powder, and
then mix them well together with sufficient water to form the whole
on to a proper consistency for moulding.
In making the moulds with these materials considerably more ramming
or beating is required than with ordinary loam sand; and the moulds 1
are to be washed with water and carefully smoothed after the pattern is
taken out.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Beecroft in the Great Seal Patent Office
on the 1st October 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
BEECROFT, of Barrow-in-Furness, in the County of Lancaster, Iron
Moulder, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the First day of April, in the year of our
Lord One thousand eight hundred and seventy-three, in the 36th
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said William Beecroft, Her special license that I, the
said William Beecroft, my executors, administrators, and assigns, or such
others as I, the said William Beecroft, my executors, administrators,
or 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 CONSTRUCTION OF MOULDS
FOR MOULDING METALS, AND IN THE COMBINATION OF MATERIALS FOR THE SAME,'
upon the condition (amongst others) that I, the said William Beecroft,
my executors or administrators, by an instrument in writing under
"

page_text: 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 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 William Beecroft, 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 said Invention has for its object an improvement in the construction
of moulds for moulding metals whereby several castings may be made
from such moulds without the necessity of reforming them; and
consists in the application and use of a peculiar combination of burnt
fire-clay, loam, sand, and common clay worked and combined together
with water to a proper consistency for moulding.
In carrying out my Invention I have obtained good results from the
use of one part of slag cinder, one part of loam clay, four parts of burnt
fire-clay, and four parts of loam sand, but I do not confine or restrict
myself precisely to these proportions as they may be varied according to
the weight of the castings to be produced; for example, in the case of
heavy castings, say from one ton weight upwards, the proportions herein-
before given I find most suitable, but for lighter castings the proportion
of burnt fire-clay may be reduced about one-tenth part and the pro-
portion of loam clay increased about one-tenth part. I grind separately
each of these materials into fine powder, and then mix them well together
with sufficient water to form the whole into a proper consistency for
moulding.
In making the moulds with these materials considerably more ramming
or beating is required than with ordinary loam sand; and the moulds
are to be washed with water and carefully smoothed after the pattern is

page_text: me by the herein-before in part recited Letters Patent is, the peculiar
combination of materials for the construction of moulds for moulding
metals, substantially as herein-before described.
In witness whereof, I, the said William Beecroft, have to this my
Specification set my hand and seal, this Thirtieth day of
September, One thousand eight hundred and seventy-three.