AN IMPROVED MANUFACTURE OF BRICKS TILES OR SLABS." PROVISIONAL SPECIFICATION left by the said
Year: 1882

page_text: LETTERS PATENT to John Caldwell Bloomfield of Blen-y-lung County of
Fermanagh Ireland and John McGurn of Bally-Magharan also in the County
of Fermanagh Ireland for an Invention of "AN IMPROVED MANUFACTURE
OF BRICKS TILES OR SLABS."
PROVISIONAL SPECIFICATION left by the said John Caldwell Bloomfield
"
and John McGurn at the Office of the Commissioners of Patents on the
8th August 1882.
JOHN CALDWELL BLOOMFIELD of Blen-y-lung County of Fermanagh Ireland
and JOHN MCGURN of Bally-Magharan also in the County of Fermanagh Ireland
AN IMPROVED MANUFACTURE OF BRICKS, TILES OR SLABS
"
Our invention relates to an improved manufacture of bricks tiles or slabs such
as may be employed for walling, roofing flooring or paving and like purposes, the
object which we have in view being to produce articles strong and impervious to
moisture.
For this purpose we mix sand and chalk together in the proportions of about
two parts of sand to one of chalk adding only sufficient water to cause the mixture
to cohere so that it can be moulded or pressed to the forms of bricks tiles or slabs.
These when they are moulded are at once baked at almost a red heat without
preliminary drying and while still hot are put into boiling coal tar in which they
are kept from 1 to 2 hours. At the end of this time they will have beconie
thoroughly impregnated with the tar and being removed from it they are at once
thrown into cold water which has the effect of cooling and also of chill hardening
and toughening them. .

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Caldwell Bloomfield and John McGurn in the Great Seal
Patent Office on the 7th February 1883.
JOHN CALDWELL BLOOMFIELD of Blen-y-lung County of Fermanagh Ireland
and JOHN MCGURN of Bally-Magharan also in the County of Fermanagh Ireland
'AN IMPROVED MANUFACTURE OF BRICKS, TILES OR SLABS "
<<
Our Invention relates to an improved manufacture of bricks tiles or slabs such
as may be employed for walling, roofing, flooring or paving and like purposes,
the object which we have in view being to produce articles strong and impervious
to moisture.
For this purpose we mix sand and chalk together in the proportions of about
two parts of sand to one of chalk adding only sufficient water to cause the mixture
to cohere so that it can be moulded or pressed to the forms of bricks, tiles or slabs.
These when they are moulded are at once baked at almost a red heat without
preliminary drying and while still hot are put into boiling coal tar in which they
are kept from 1 to 2 hours. At the end of this time they will have become
thoroughly impregnated with the tar and being removed from it they are at once
thrown into cold water which has the effect of cooling and also of chill hardening
and toughening them.
Having thus described the nature of our invention and in what manner the same
is to be performed, we claim :-
The manufacture of bricks tiles or slabs substantially as herein described.
In Witness whereof I the said John Caldwell Bloomfield have hereunto set
my hand and seal this sixth day of February in the year of our Lord One
thousand eight hundred and eighty-three..
T 2 PLOOMETET D