IMPROVEMENTS IN KILNS
Year: 1873

page_text: PROVISIONAL SPECIFICATION left by John Barrow anu William
Barrow at the Office of the Commissioners of Patents, with their
Petition, on the 29th April 1873.
We, JOHN BARROW and WILLIAM BARROW, both of Belgrave,
in the County of Leicester, Brick Manufacturers, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN KILNS," to be as
follows:-
The improvements relate to kilns for burning bricks, tiles, carthen
pipes, and such like, and consist in the construction and arrangement of
a series of two or more kilns with domed roofs side by side in rows
with a passage or space betwixt and around each kiln.
Also in the construction and arrangement of temporary and permanent
flues, shafts, blast pipes, and such like for the purposes of thoroughly
and economically burning bricks by saving and re-using the heat
obtained.
The improvements may conveniently be performed as follows:-We
construct a convenient number of kilns, leaving passage ways or spaces
all round each kiln, and we provide a convenient number of fire-holes

page_text: or furnaces in each such fire-holes or furnaces being constructed as
those in ordinary kilns. We also provide a chimney which we use as
a smoke and damp shaft in connection with a main draught flue which
we form.
In the centre of each kiln and under the domed roof thereof we form
with green bricks every time we charge each such kiln a temporary
chimney with openings at the foot thereof in direct communication with
the first mentioned flue next described, and the steam and smoke flue
to be farther described. We also form a flue under the surface of each
kiln, which flue is in communication with the last named chimney, as 1
also with a perforated flue which we form running all round the interior
of each kiln and at or near the level of the floor thereof.
We also form a flue running round one half of the exterior of half of
the series of such kilns and about three-quarters round the exterior of
the remaining kilns which communicate with the first named flue.
We also form a steam and smoke flue under the surface of cach kiln
in direct communication with the temporary chimney formed of green
bricks and the main draught flue.
In addition to all the before named flues we lay down all round the
outside of the kilns as well as round each of the kilns other flues 2
composed either of cast-iron pipes or ordinary glazed socket pipes,
properly jointed, of a convenient size,
of these last named flues or pipes we
small cast-iron pipes which we call lets.
and under each fire-hole and up to within about 6 inches from the bars 2
of each furnace.
all communicating, and to each
attach a convenient number of
Each of these lets leads into.
We provide dampers to each of the lets together with a saucer shaped
top, which tops may be attached to the lets by means of upright rods
and a band round the neck thereof or by other convenient means....
We also attach to the outside or main flue another pipe which we a
carry to a spot somewhere near a suitable steam engine to be used on
the works, and fix the same in connection with an ordinary one fan
blast which we set up and work by the said steam engine. By using
the blast we not only not
MASA
fil bond that

page_text: refuse or material suitable for fuel, and thus to a very great extent
economising the consumption of coal.
We intend to use the blast for the purpose of driving the heat from
each kiln (after the bricks and such like therein are thoroughly burnt)
out through the flues thereof to the other kilns. By this process the
bricks and such like will be more quickly cooled, and the bricks and
such like in the kiln into which the heat was forced much sooner
burnt.
We also provide for each of the foregoing flues dampers capable of
being opened or closed at pleasure.