RESTORING SPENT SAND KNOWN AS MOULDERS' OR IRONFOUNDERS' SAND
Year: 1877

page_text: LETTERS PATENT to William Loynd and John Shaw Loynd, both of Blackburn,
in the County of Lancaster, Engineers and Ironfounders, for the Invention of
"RESTORING SPENT SAND KNOWN AS MOULDERS' OR IRONFOUNDERS' SAND”
Saled the 7th August 1877, and dated the 10th February 1877
PROVISIONAL SPECIFICATION left by the said William Loynd and John
Shaw Loynd at the Office of the Commissioners of Patents on the 10th
February 1877
WILLIAM LOYND and JOHN SHAW LOYND, both of Blackburn, in the County of
Lancaster, Engineers and Ironfounders "RESTORING SPENT SAND KNOWN AS
MOULDERS' OR IRONFOUNDERS' SAND"
The object of this Invention is by the application and addition (of ingredients
hierein-after specified) to moulders' "spent" sand, that is to say, to moulding sand
which, by contact with molten metal, has been rendered unfit for further use, and
which heretofore has been treated as waste, to restore and render such sand again
available
In treating spent sand we take about the following proportions -To one hundred-
weight of spent sand we add about lb of oil of petroleum or other volatile oil,
of rock or common salt about 2 oz, clay (blue by pieference) 14 lbs, coal dust about
3 lbs, the whole is to be thoroughly mixed and allowed to stand a day or two, when
it is 1eady for use
Sand treated and restored as above we term "Loynd sand"
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Loynd and John Shaw Loynd in the Great Seal Patent Office
on the 10th August 1877.
WILLIAM LOYND and JOHN SHAW LOYND, both of Blackburn, in the County
of Lancaster, Engineers and Iionfounders "RESTORING SPLNT SAND KNOWN AS
MOULDERS' OR IRONFOUNDERS' SAND"

page_text: The object of this Invention is by the application and addition (of ingredients
herein-after specified) to "mouldeis' spent sand," that is to say, to moulding sand
which, by contact with molten metal, has been rendered unfit for further use, and
which heretofore has been treated as waste, to restore and render such sand again
available
In treating spent sand we take about the following proportions -To one hundred-
weight of spent sand one quarter of a pound of oil of petroleum or other volatile oil, of
rock or common salt two ounces, of clay (blue by preference) one and a half pounds,
coal dust about three pounds, the whole to be thoroughly mixed and allowed to
stand a day or two, when it is ready for use
Sand treated and restored as above we term "Loynd sand"
The following is a complete description of the Invention, together with the
ingredients and the proportions thereof to be used
-
The object of this Invention is by the application and addition of ingredients
herein-after specified to moulders' spent sand, that is to say, to inoulding sand
which, by contact with molten metal, has been buint and rendered unfit for further
use, and which heretofore has been as waste, to restore and render such sand again
available
In treating spent sand we take about the following proportions to one hundred-
weight of spent sand -One quarter of a pound of oil of petroleum, paraffin, or
_other volatile oil, "rock" oi common salt two ounces, clay (the blue clay by
preference) one and a half pounds, coal dust, about three pounds, salt, 2 oz ;
charcoal, 1 lb, the whole to be thoroughly mixed and allowed to stand a day or
two, when it is ready for use If desued, non-volatile oils may be used, such as
olive oil, rape, or linseed
The proportions given above may be vaned (without departing from the In-
vention), they are, however, the best proportions ascertained from actual tests and
practical use
In witness whereof, we, the said William Loynd and John Shaw Loynd, have
her cunto set our hands and seals, this Seventh day of August, in the year
of our Loid One thousand eight hundred and seventy-seven
WILLIAM LOYND
(LS)
Signed, sealed, and delivered
by the above-named William
Loynd and John Shaw Loynd
in the presence of
RICHARD LOYND,
Schoolmaster,
JOHN SHAW LOYND (LS)
Chitheroc