IMPROVEMENTS IN DRAWING OFF THE VAPOURS FROM BATHS EMPLOYED IN COATING METALS
Year: 1868

page_text: LETTERS PATENT to Joseph Jones, of Wolverhampton, in the County
of Stafford, Manufacturer, for the Invention of "IMPROVEMENTS IN
DRAWING OFF THE VAPOURS FROM BATHS EMPLOYED IN COATING METALS."
Sealed the 28th May 1869, and dated the 19th December 1868.
PROVISIONAL SPECIFICATION left by the said Joseph Jones at the
Office of the Commissioners of Patents, with his Petition, on the
19th December 1868.
Í, JOSEPH JONES, of Wolverhampton, in the County of Stafford,
Manufacturer,, do hereby declare the nature of the said Invention för
"IMPROVEMENTS IN DRAWING OFF THE VAPORS FROM BATHS EMPLOYED IN COATING
METALS," to be as follows, that is to say :-
This Invention refers more particularly to the drawing off of the
vapours arising from baths employed in the process of galvanizing or
tinning of metals.
For this purpose I construct a flue of suitable size, made by preference

page_text: of iron, and use in combination therewith an exhaust fan worked by
steam or other suitable power in order to obtain a strong draft or
current of air; upon the top edges of and surrounding the bath I form
a hollow flat flue of suitable form in section; this hollow flat flue is
connected to the main downward draft flue and is open upon its inner
side; into this hollow flat flue the vapour from the metallic bath is first
collected or drawn by means of the circulate of fresh air, and from
thence passes into and is taken down the main flue, being conveyed
either to a suitable condenser for the purpose of collecting the metals
contained in the vapour, or to an ordinary stack.
For some purposes I propose to employ additional collecting flues
above the flat flue already specified and arranged in suitable positions,
and I also purpose using double acting fans or more than one fan in
creating or assisting the desired draught.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Joseph Jones in the Great Seal Patent Office
on the 18th June 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSEPH
JONES, of Wolverhampton, in the County of Stafford, Manufacturer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Nineteenth day of December, in the
year of our Lord One thousand eight hundred and sixty-eight, in the
thirty-second year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Joseph Jones, Her special licence that
I, the said Joseph Jones, my executors, administrators, and assigns, or
such others as I, the said Joseph Jones, my executors, administrators,
and assigns, should at any time agree with, and no others from time to
time and at all times thereafter during the term therein expressed,
should and lawfully might make, use, exercise, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands,
and Isle of Man, an Invention for "IMPROVEMENTS IN DRAWING OFF THE
VAPOURS FROM BATHS EMPLOYED IN COATING METALS," upon the condition
(amongst others) that I, the said Joseph Jones, by an instrument in

page_text: writing under my hand and seal, should particularly describe and
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Joseph Jones, do hereby declare
the nature of my said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement, reference being had to the Drawings hereunto
annexed, and to the letters and figures marked thereon, that is to
say :-
This Invention refers more particularly to the drawing off of the
vapours arising from baths employed in the process of galvanizing or
tinning of metals.
For this purpose I construct a flue of suitable size, made by preference
of iron, and use in combination therewith an exhaust fan worked by
steam or other suitable power in order to obtain a strong draught or
current of air; upon the top edges of and surrounding the bath I form
a hollow flat flue of suitable form in section; this hollow flat flue
is connected to the main downward draught flue, and is open upon its
inner side; into this hollow flat flue the vapour from the metallic bath
is first collected or drawn by means of the circulation of fresh air, and
from thence passes into and is taken down the main flue, being
conveyed either to a suitable condenser for the purpose of collecting the
metals contained in the vapour, or to an ordinary stack.
For some purposes I propose to employ additional collecting flues
above the flat flue already specified and arranged in suitable positions,
and I also purpose using double acting fans or more than one fan in
creating or assisting the desired draught.
My Invention will be more readily understood by referring to the
annexed Drawings, and the letters and figures marked thereon.
Figure 1 is a plan, and Figure 2 an elevation of a bath, such as are
usually employed in the process of galvanizing or tinning of metals,
with our improvements for drawing off the vapour therefrom shewn as
applied thereto.
(a) is a fluc of suitable diameter or size made by preference of iron or
earthenware; (b) is an exhaust fan worked by steam or other convenient

page_text: power, in order to obtain a strong draught or current of air; (c) is the
bath having upon its top edges a hollow flat flue or air trough (d) fitted
thereupon, this hollow flat flue or air trough (d) may be made to
entirely surround the top edges of the bath, or, as shewn in Figure 1, it
may only surround half or a portion of the top edges or circumference
of the bath (c), which may also be made of any suitable shape in plan.
The hollow flat flue or air trough (d) is connected to the main flue (a)
by means of a series of pipes (e) connected to the air trough and passing
down to meet a transverse pipe (e¹) in communication with the main
air flue (a). The vapour as it rises from the metallic bath is drawn into
the hollow flat flue or air trough (d) by means of the circulation or
current of fresh air created by the revolution of the fan (b) from the
hollow flat flue or air trough (d), the vapour passes into and is taken
down the main air flue (a) being conveyed either to a suitable condenser
for the purpose of collecting the metals contained in the vapor or to an
ordinary stack.
I propose in some cases if requisite to employ additional collecting
flues above the flat flue or air trough already specified and arranged in
suitable positions; I also propose using double-acting fans or more than
'one fan in creating or assisting the desired draught.
Having thus described the nature and object of my said Invention,
and in what manner the same is to be carried into effect, I claim,
without limiting myself to the precise outlines or form of the parts as
described and illustrated, "The Improvements in Apparatus for Drawing
off the Vapors from Baths employed in Coating Metals," substantially
in manner as herein more fully set forth and specified.
In witness whereof, I, the said Joseph Jones, have hereunto set
my hand and seal, this Seventeenth day of June in the year
of our Lord One thousand eight hundred and sixty-nine.