An Improved Method for Drying Bricks, Earthenware, Cement, Slurry, and the like, before Burning, or for Drying Salt, Whiting, and the like.
Year: 1899

page_text: Date of Application, 23rd Sept., 1899-Accepted, 11th Nov., 1899
An Improved Method for Drying Bricks, Earthenware, Cement,
Slurry, and the like, before Burning, or for Drying Salt,
Whiting, and the like.
We, WILLIAM ALLISON and JOSEPH ENGLISH, trading as Allison, English & Co.,
of Team Valley Brick Works, Birtley, in the County of Durham, Brick Manu-
facturers, do hereby declare the nature of this invention and in what manner
the same is to be performed to be particularly described and ascertained in and
by the following statement:—
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This invention relates to an improved method for drying bricks, earthenware
cement slurry and the like before burning or for drying salt, whiting and the like.
In the annexed drawings, Fig. 1 is a sectional plan.
Fig. 2 longitudinal section of tunnel.
Fig. 3 sectional elevation through tunnels and exhaust shaft on line S, T, of
Fig. 1.
Fig. 4 section through tunnels and fan chamber on line U, V, of Fig. 1.
Fig. 5 section of kilns on line W, X, of Fig. 1.
Fig. 6 section of kiln and hot air flue on line Y, Z, of Fig. 1.
A represents tunnels in which the wet bricks loaded on hogies or trollies are
put: A¹ doors at end of tunnel; B gratings in floor of tunnels: C exhaust shaft ;-
Dexhaust duct or flue: E openings in floor of tunnel to hot air duct or flue E;
F. main hot air duct from fan G. H the driving pulley of the fan. J shaft:
K kiln for burning bricks or the like; L opening in top of back wall of kiln
into hot air flue M. N tube connecting hot air tube to fan chamber P; Q opening
in flue wall opposite L; R doors on openings Q.
The usual custom is after burning the bricks in the kiln K to take down the
whole or part of the front of the kiln thus exposing the contents of the kiln to
the outer atmosphere to thus gradually cool the bricks or ware so that all this
heat is practically wasted. The object of this invention is to use this wasted
heat in drving the bricks before putting them in the kiln.
The holes are temporarily built up during the burning of the bricks or
they may be closed by dampers. Holes Q may also be built up or they may he
closed by doors R. The wet bricks are loaded on bogies which may run on rails
in the tunnels A, the wettest bricks being near the exhaust end of the tunnel.
After bricks have been burnt say in the kiln, the front may be wholly or partly
taken down, the openings L broken through by putting a bar through the hole O.
Dampers may be provided to control the communication between hot air ducts F
and E¹. After breaking through at L and closing the openings R the fan G
is set going. The air is drawn through the kiln K and is heated by the hot
bricks. thus cooling them and becoming itself heated. It then passes through
duct F into the ducts E¹ and through the openings E into tunnels A, the doors A¹
being closed, then through the gratings Band out by the shaft C to the atmos-
phere. The wet bricks are put into the tunnel at or near the exhaust end and
taken out at or near the other end, the doors A¹ being periodically opened to take

page_text: out the dried bricks, the wet ones being then moved further in the tunnel and
the latter filled up with wet bricks. By this means the bricks are gradually
dried, the greatest heat coming in contact with the driest bricks.
This process may be used for drying any articles or materials that can be
carried on bogies, either piled on the bogies or in trays, such as earthenware
salt whiting, cement and the like.
If thought necessary and in cases where the kilns have not been burning and
it is required to dry bricks &c. in the tunnels, the air may be heated by being
drawn through a steam heater inserted at a convenient place, for instance in
the tube N.
Having now particularly described and ascertained the nature of this said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. The improved method of drying bricks, earthenware, cement slurry, and the
like before burning or for drying salt whiting or other materials consisting in
loading them on bogies or trucks and passing them along tunnels to which heated
air derived from passage over goods being cooled in a kiln, or from a suitable
furnace is supplied through air ducts communicating with such tunnels at
intervals by means of openings between the ducts and tunnels, the air being dis-
charged from said tunnels through gratings or openings at or near one end
thereof, doors being provided at the tunnel ends for inlet and outlet respectively
of the loaded bogeys or trucks substantially as set forth.
2. The construction of apparatus as herein described and substantially as
illustrated in the drawings for the purpose of drying goods or materials according
to the method set forth in Claim 1.
D. 1
1
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HERBERT HADDAN & Co.,
Agents to Applicant, 18, Buckingham Street, Strand, W.C.