IMPROVEMENTS IN THE BURNING OF BRICKS, LIME, CEMENT, AND OTHER LIKE SUBSTANCES, AND IN THE, KILNS EMPLOYED THEREIN
Year: 1868

page_text: PROVISIONAL SPECIFICATION left by Humphrey Chamberlain, John
Craven, and Hermann Wedekind at the Office of the Commissioners
of Patents, with their Petition, on the 24th February 1868.-Partly
a communication from abroad by Friedrich Hoffman, of Berlin,
in the Kingdom of Prussia.
We, HUMPHREY CHAMBERLAIN, JOHN CRAVEN, both of Wakefield,
in the County of York, Engineers, and HERMANN WEDEKIND, of No. 2,
Dunster Court, Mincing Lane, in the City of London, Engineer, do
hereby declare the nature of our said Invention for "IMPROVEMENTS IN
THE BURNING OF BRICKS, LIME, CEMENT, AND OTHER LIKE SUBSTANCES, AND IN
THE, KILNS EMPLOYED THEREIN," partly a communication to us from abroad
by Friedrich Hoffman, of Berlin, in the Kingdom of Prussia, and partly
our own Invention, to be as follows, that is to say :-
This Invention relates to certain modifications of or improvements

page_text: for which Letters Patent were granted to Alfred Vincent Newton,
bearing date the 22nd of December 1859, No. 2918, and to Humphrey
Chamberlain, John Craven, and Hermann Wedekind, bearing date the
24th of June 1864, No. 1596, and has for its object the simplification
of the construction of the kilns rendering them more suitable for con-
tractors and temporary works, whilst at the same time as the steam
and products of combustion are more rapidly carried off a better
quality of burned goods is obtained and greater economy of fuel is
effected.
According to this Invention it is proposed to combine with kilns
construced on the principles set forth in the Specification of the Patents
herein-before referred, to a system of forced combination obtained by
employment of à fan blower or exhauster situate: on the outer or
inner circumference, or on the top of the burning chamber of the
kiln, and dispensing with the use of the usual chimney and smoke
chamber.
In one modification a stationary fan communciates with a continuous
flue formed round the outer or inner circumference of the kiln, from
which flue passages are formed connecting it with the devisions of the
kiln, such passages being opened or closed by air-tight dampers in the
order required. Air is either forced into the division containing the
cooling bricks or is exhausted from the division containing the green
bricks, and in either case the draught is caused to circulate throughout
the whole of the divisions except those which are being either emptied
or filled.
In another modification we use a portable fan and dispense entirely
with chimnies, flues, smoke chambers, and valves or dampers, the fan
being simply connected direct with any one of the several divisions
through the ordinary doorway, or through a special opening if preferred,
and is to be removed from time to time to a fresh division as the fire
proceeds. The air may either be forced in behind the fire, in which case
it will pass off through a moveable smoke pipe temporarily fitted on to
the feed holes or man-holes, the position of this smoke pipe being
changed as the fire proceeds; or the air may be exhausted from the
front of the fire if preferred. The heat being wasted for the purpose
of supporting the draught, as is the case with ordinary draught chimnies,

page_text: it is obvious that a considerable saving of fuel in this respect will be
effected. Should the air as it leaves the kiln be found to be of an
elevated temperature, its heat may be utilized by being forced through
separate drying chambers or flues.