IMPROVEMENTS IN AND CONNECTED WITH KILN FLUES FOR DRYING CEMENT SLIP OR SLURRY
Year: 1876

page_text: LETTERS PATENT to Vitale Domenico de Michele, of 5, Westminster Chambers,
in the County of Middlesex, for the Invention of "IMPROVEMENTS IN AND
CONNECTED WITH KILN FLUES FOR DRYING CEMENT SLIP OR SLURRY."
Scaled the 19th June 1877, and dated the 20th December 1876.
PROVISIONAL SPECIFICATION left by the said Vitale Domenico de Michele
at the Office of the Commissioners of Patents on the 20th December 1876.
VITALE DOMENICO DE MICHELE, of 5, Westminster Chambers, in the County
of Middlesex. "IMPROVEMENTS IN AND CONNECTED WITH KILN FLUES FOR
DRYING CEMENT SLIP OR SLURRY."
This Invention relates to improvements in and connected with kiln flues for
drying cement slip or slurry. The top of the kiln flue or flues is according to my
Invention formed with a series of holes or apertures through which the flue can be
charged from above, the apertures being afterwards covered to form a portion of the
top proper, which is in my Invention utilized for drying slip, which is placed
thereon. By this means not only the heat from the escaping gases is used direct
upon the layer of slip within the flues, but the heat which is taken up by the top of
the flue is given off to dry the layer thereon.
A roof or overhead covering is arranged over and above the top of the flues or
chamber portion leading from the cement kiln to the chimney, and into which slip
is inserted prior to its being dried by the waste or escaping heat from the kiln.
The apertures in the top of the flue when uncovered serve to expedite the cool-
ing of the flue for the removal of the dry slip, and consequently lessens the time the
flues are idle, it being essential that the flues are sufficiently cold to permit men to
enter to break up and remove the slip.
My plan of drying on the top as well as in the flue enables me to make the
structure considerably shorter than is necessary with ordinary chamber kilns, and
therefore saves material, time, and costs of construction in addition to the advantage
of quick drying of slip and quick cooling of the flues after the drying.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said Vitale Domenico de Michele in the Great Seal Patent Office on the 20th
June 1877.
VITALE DOMENICO DE MICHELE, of 5, Westminster Chambers, in the County
of Middlesex. "IMPROVEMENTS IN AND CONNECTED WITH KILN FLUES FOR
DRYING CEMENT SLIP OR SLURRY."
In a Patent granted to Isaac Charles Johnson, dated 23rd May, 1872, the
Inventor describes a high wide flue or chamber between a kiln and a chimney for
the reception of wet slip or slurry on to the flooring of same, so that the heat from
the kiln in passing over it to the chimney may dry the slip and render it fit for
after burning as is usual, thus expediting the operation of drying in a more
advantageous and less expensive manner than hitherto. Now according to my
Invention I utilize the top or roof of Mr. Johnson's flue as a floor on to which wet
slip or slurry can be spread or placed in order that the heat which passes through
the brick work of the crown or roof may dry the same.
In some cases I cover this roofing with a light roofing, which I make of sufficient
height for men to move about under.
In the roof flooring I make apertures for the purpose of charging, cooling, and
lighting the chamber when they are open.
My Invention enables the structure to be considerably shorter than usual to dry
the same amount of slip by economizing the heat as before explained; it also saves
material and lessens the cost of construction.
Having now described the nature of the said Invention and in what manner the
same is to be performed, I declare that I claim the drying of cement slip on the
roof of a "Johnson" chamber or fluc, within which slip or slurry is also dried by
waste heat of a kiln, whereby the heat of the chamber roof, is utilized for drying
slurry thereon, apertures being in said roof, as and for the purposes described.
In witness whereof, I, the said Vitale Domenico de Michele, lave hereunto
set my hand and seal, this Nineteenth day of June, One thousand eight
hundred and seventy-seven.