AN IMPROVED PROCESS OF COLLECTING THE SOLIDIFIABLE PORTIONS OF FUMES ARISING FROM METALLURGICAL AND OTHER OPERATIONS
Year: 1878

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine, Lake, &
Co., Patent Agents, Southampton Buildings, Loudon, for the Invention of
"
AN IMPROVED PROCESS OF COLLECTING THE SOLIDIFIABLE PORTIONS OF
FUMES ARISING FROM METALLURGICAL AND OTHER OPERATIONS." A com-
munication from abroad by James Cosmo Newbery, of St. Kilda, near Mel-
bourne, Chemist, John Lister Morley, of Carlton, Gentleman, and Barry
*Cleveland, of Melbourne, Gentleman, all in Victoria, Australia.
COMPLETE SPECIFICATION filed by the said William Robert Lake at the
Office of the Commissioners of latents on the 29th October 1878.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Paient Agents,
Southampton Buildings. London. AN IMPROVED PROCESS OF COLLECTING THE
SOLIDIFIABLE PORTIONS OF FUMES ARISING FROM METALLURGICAL AND OTHER
OPERATIONS." A communication from abroad by James Cosmo Newbery, of St.
Kilda, near Melbourne, Chemist, John Lister Morley, of Carlion, Gentleman, and
Barry Cleveland, of Melbourne, Gentleman, all in Victoria, Australia.
Certain descriptions of fumes, such as those arising from furnaces and from
metallurgical operations, consist of two qualities, namely, those which remain
permanently gaseous and those which at a certain temperature become solid.
Now, this Invention is designed to afford the means for collecting the solid from
the permanently gaseous part of such fumes. To accomplish this object, it is essen.
tial that the fumes should be directed with considerable velocity against a series of
solid resisting surfaces, and finally against a web of permeable material, through
which the permanently gaseous fumes filter. It is found that the greater the force
with which such fumes impinge against a series of metallic discs, the larger is the
per-centage of solids which attach themselves to such discs, and ultimately fall into
a receptacle beneath.
It is also found that if such current of fumes is so concen-
Price 8d1

page_text: trated as to be compelled to pass through a narrow opening, and then against a
-metallic-dise, that the effect is heightened,
If the velocity of the current be great enough, that is to say, if the draught be
strong enough, by far the larger proportion of the solids will deposit themselves on
striking the dises, leaving only a small portion to be retained by the final filier,
whilst on the other hand, if the discs were removed, the whole of the solids would
be retained by the final filter, but this arrangement would give it unnecessary work.
This filter is made of metallic-gauzer which-may-be-protected-from-the-action of the
fumes by a coating of any non-volatile oxide, infusible at the temperature which it
is required to withstand. The mesh of this gauze is reduced to any requisite fineness
by felting it with asbestos, or covering it with asbestos cloth (or when the fumes-are-
sufficiently cool), with wool or vegetable fibre.
The accompanying Drawing is an illustration of the manner in which an appa-
ratus may be constructed for the purpose of carrying the said Invention into
practice.
Figure 1 is a longitudinal sectional elevation, and Figure 2 is a transverse section
of a series of flues A, in which are a series of resisting surfaces or discs B, C, being
the orifices through which the gaseous current would flow and impinge on such
surfaces, and D, the final filter: E, E, are the receptacles for the solids, which fall
after impinging against the discs, and which can be removed through a door at the
bottom.
The necessary draught is produced by artificial means, although it does not matter
how it is produced if it is strong enough.
As an illustration of the description of fumes intended to be treated by this
Invention, those in which the solids consist of oxide of antimony, arsenic. bismuth,
lead, and zinc, and the permanently gaseous fumes of sulphurous and carbonic
anhydride (sulphurous and carbonic acids) may be named. It will, however, be
obvious that these are not the only kinds of fumes which can be treated by this
Invention, but that, on the contrary, it is applicable to all fumes of which a certain
part becomes solid under the conditions above specified.
Having thus fully described the said Invention as communicated to mesby my
foreign correspondents, and the manner of performing the same, I wish it understood
that claim, the collection of the solidifiable portion of fumes by directing them
with great velocity against discs or other resisting surfaces, or through a filter, or by
both of these agencies combined, as herein described.
In witness whereof, I, the said William Robert Lake, have hereunto set my
hand and seal, this Twenty-ninth day of October, in the year of our Lord One
thousand eight hundred and seventy-eight.
'
W. ROBT, LAKE. (L..S.)