An Improvement in Brick Drying Apparatus.
Year: 1898

page_text: Date of Application, 21st Jan., 1898-Accepted, 26th Mar., 1898
COMPLETE SPECIFICATION.
An Improvement in Brick Drying Apparatus.
3.
I, WILLIAM TATTERSALL, of No. 63, Fore Street, in the City of London, Engineer,
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:
My invention relates to an arrangement of chambers, heating and ventilating
apparatus and channels for drying bricks after they have been moulded and before
they are burnt, the channels being so contrived that the heating and ventilating
currents can be directed in various ways to suit different qualities of the brick
clay.
The accompanying drawings shew an arrangement of four drying chambers for this
purpose.
Fig. 1 is a sectional plan, Figs. 2, 3, 4, 5, 6, 7 and 8 are vertical sections
respectively on the lines 2-2, 3-3, 4-4, 5-5, 6-6, 7-7, and 8-8 of Fig. 1. A
is a set of fires through and over which air entering by a door C is drawn by a fan B,
the air being heated by and mingled with the products of combustion. The mixture
of air and products is propelled along a channel E in quantities regulated by doors F
into four channels extending along under four drying chambers G. Between the
two middle chambers and outside the two outer chambers are spaces separated by
horizontal partitions so as to form two channels an upper I and a lower J each of
these communicating with the chambers G by lateral openings controlled by valves.
The four channels under the chambers G at their far ends communicate as shewn in
Fig. 6 with the far ends of the channels I or J according as hinged valves K are put
in their vertical position or in the horizontal position indicated by dotted lines K¹.
Also the one or the other of each of the channels I and J, at their near ends as shewn
in Fig. 7 as determined by the position of valves L communicate with an end
channel M leading by a passage N to a chimney shaft P. This shaft is provided
with a valve Q which in one position closes passage to the top outlet but opens
passage into the fire chamber, and in its other position closes passage to the fire
chamber and opens passage to the top outlet.
When the bricks are of certain kinds of clay it is necessary to heat them at first
without drying them otherwise they are liable to crack. In this case the lateral
openings to and from the channels I J being closed so that no currents pass to
or from the chambers G, the heated air and products of combustion pass along the
channels under the chambers, thence back along the channels I or J to M and N,
and the valve Q being in its horizontal position and the door C closed, the mixture
of air and products pass again through and over the fires A and go on circulating and
heating up the chambers and their contents. When the bricks are so far heated,
the valve Q is put in its vertical position the door C is opened then by opening
the lateral valves the currents from the channels I are allowed to enter the chambers G
at their upper part and to pass to the channels J at the lower part or conversely,
and the moistened air returning by M and N issues by the chimney, fresh air being.
supplied by the open door C.

page_text: The chambers G have at each end doors R preferably arranged to slide vertically as
shewn in Fig. 8. The openings to and from the channels I and J may have their
valves simultaneously opened as shewn in Fig. 6 by connecting their pulls to barrels
on horizontal shafts S by turning. which in the one direction or the other all the
valves are opened or closed.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed, I declare that what I
claim is :-
Brick drying apparatus comprising a set of fires, fan, channels and chambers
arranged and operating substantially as described with reference to the drawings.
ABEL & IMRAY,
Agents for the Applicant.