IMPROVEMENTS IN STOVES FOR DRYING ARTIFICIAL FUEL AND ·. OTHER SUBSTANCES
Year: 1872

page_text: PROVISIONAL SPECIFICATION left by John Avery Branton Williams
at the Office of the Commissioners of Patents, with his Petition,
on the 31st January 1872.
I, JOHN AVERY BRANTON WILLIAMS, of Cardiff, in the County of
Glamorgan, Civil Engineer, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN STOVES FOR DRYING ARTIFICIAL FUEL AND ·.
OTHER SUBSTANCES," to be as follows:―
I construct on a suitable foundation a parallel straight tunnel or
"stove chamber" for the most part of fire-bricks heated by one or more
furnaces at one or both ends, the flues of which traverse underneath the
"stove chamber" in a longitudinal direction, thence up and along
the flues on each side of the stove chamber, and lastly over and along
the top of the said chamber, thus thoroughly absorbing the heat of the
escaping gases.
Underneath the furnace flues I construct flues for the circulation of
air to be heated before being admitted into the stove chamber in
continuous currents to facilitate the evaporation of moisture from the
substances contained therein. These flues (which I call "hot air flues")

page_text: traverse the whole length of the stove, and are divided from the furnace
flues by an arch or division of fire-brick, metal, or other similar material.
After the air to be heated has traversed these flues underneath the furnace
flues it passes up on each side of the furnace flues through lateral
openings in the brickwork, and lastly crosses over the furnace flues
through the pipes or tubes which form the top of the furnace flues
entering into the stove chamber through openings on each side
alternately and in the centre.
To further heat the air it may be brought in contact with the waste
gases in the main extraction flue, by first passing through pipes or tubes
laid in the extraction flue before entering the "hot air flues
described. The air may first enter at either end of the stove.
"
as before
The pipes or tubes forming the top of the furnace flues are con-
structed of fire-brick, metal, or other suitable material, perforated
longitudinally by preference; these tubes are constructed of cast iron, :
forming a continuous tube from side to side of the stove, laid close to
each other and forming the floor of the "stove chamber." To distribute
the hot air perforated metal plates are placed over the opening in the
hot air tubes. In the stove chamber" ventilating openings are
provided to allow of the escape of all moisture caused by evaporation.
The stove is constructed with an inclined floor to facilitate the
discharge of trucks of material when dried. The trucks carrying the
substances to be dried are. introduced at one end of the. tunnel or
"stove.chamber" and discharged at the other. The ends of the "stove
chamber" are closed by closely fitting doors. In the interior of the
"stove chamber" are provided moveable. "deflector plates" of metal,
for the purpose of guiding the currents of hot air into and amongst
the substances to be dried at any required point.
Ventilating openings are provided at each end of the stove to admit
cold air into the "hot air flues" when required to regulate the
temperature. Suitable heat indicators are also adapted to the stove.