AN IMPROVED BOILER FOR DIGESTING, RECTIFYING, AND FOR EFFECTING CHEMICAL OPERATIONS GENERALLY"
Year: 1882

page_text: LETTERS PATENT to James Anthony Graham, of 66 Coleman Street, in the
City of London, for an Invention of "AN IMPROVED BOILER FOR DIGESTING,
RECTIFYING, AND FOR EFFECTING CHEMICAL OPERATIONS GENERALLY"
PROVISIONAL SPECIFICATION left by the said James Anthony Graham at
the Office of the Commissioners of Patents on the 10th November 1882..
JAMES ANTHONY GRAHAM, of 66 Coleman Street, in the City of London,
IMPROVED BOILER FOR DIGESTING, RECTIFYING, AND FOR EFFECTING CHEMICAL
OPERATIONS GENERALLY"
" AN
This relates to improvements in boilers for digesting, rectifying, and for carrying
on chemical operations generally.
The body of the boiler may be of any suitable form and construction, and may
be either jacketted or not according to the nature of the operations to be
performed.
Over the top of the boiler is fitted a chamber (preferably without a jacket)
secured to the body by means of a flange or other suitablo arrangement, and
separated therefrom by a perforated disc or diaphragm of lead, or other suitable
metal or material which will not be attacked by the material contained in tho
boiler, and serving to allow only liquid or volatile matter to pass up into the
chamber. At the top or other suitable part of the chamber a tap or valve is
fitted to allow the volatile matter to be drawn off. The chamber may also be fitted
with a gauge so as to indicate the height of the liquid.
In cases where it is required to inject fresh liquid, or steam, or other matter into
the bottom of the boiler, at the base, so as to cause the same to mix with the
liquid already contained therein, before coming in contact with the substance being
operated upon, a chamber is formed beneath the body of the boiler, and is separated
therefrom by a perforated disc or diaphragm of lead or other suitable metal or
material which will not be attacked by the liquid, steam, or other matter, and
which allows the liquid in the boiler to pass into the chamber. This chamber is
connected by a pipe to suitable injecting or pumping apparatus which forces the
fresh liquid, or the steam, or other matter into the chamber, and through the liquid
already contained therein into the body of the boiler.
After the operation the liquid may be drawn off through the chamber and pipe.
It will be readily understood that in using substances capable of attacking the
material of which the boiler is made, it will be necessary to coat the interior
thereof, and the parts with which such substances come in contact, with lead or
other metal or material capable of resisting their action.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James Anthony Graham in the Great Seal Patent Office on the
10th May 1883.
"AN
JAMES ANTHONY GRAHAM, of 66 Coleman Street, in the City of London,
IMPROVED BOILER FOR DIGESTING, RECTIFYING, AND FOR EFFECTING CHEMICAL
OPERATIONS GENERALLY
"
This relates to improvements in boilers for digesting, rectifying, and for carrying
on chemical operations generally.
The body of the boiler may be of any suitable form and construction, and may
bo either jacketted or not according to the nature of the operations to be
performed.
Over the top of the boiler is fitted a chamber (preferably without a jacket)
secured to the body by means of a flange or other suitable arrangement, and
separated therefrom by a perforated disc or diaphragm of lead, or other suitable
metal or material which will not be attacked by the material contained in tho
boiler, and serving to allow only liquid or volatile matter to pass up into the
chamber. At the top or other suitable part of the chamber a tap or valve is fitted
to allow any volatile matter to escape if desired. The chamber may also be fitted
with a gauge so as to indicate the height of the liquid.
In cases where it is required to inject fresh liquid, or steam, or other matter into
the bottom of the boiler, so as to cause the same to mix with any liquid already
contained therein, before coming in contact with the substance being operated
upon, a chamber is formed beneath the body of the boiler, and is separated-there--
from by a perforated disc or diaphragm of lead-or-other-suitable-metal-or-material
which will not be attacked by the liquid, steam, or other matter, and which allows
the liquid in the boiler to pass into the chamber. This chamber is connected by a
pipe to suitable injecting or pumping apparatus which forces the fresh liquid, or
the steam or other matter into the chamber, and through the liquid already
contained therein into the body of the boiler.
After the operation is terminated the liquid may be drawn off through the
chamber and pipe.
It will be readily understood that in using substances capable of attacking the
material of which the boiler is made, it will be necessary to coat the interior thereof,
and the parts with which such substances come in contact, with lead or other metal
or material capable of resisting their action.
But in order that my invention may be fully understood I will proceed to
describe the same by the aid of the accompanying sheet of drawings, in which Fig 1
is a side elevation partly in section and Fig 2 an end elevation of my improved
boiler.
The body A of the boiler may be of any suitable form and construction, and is
preferably provided with a jacket B, to which steam or other heating or cooling
medium can be admitted through the hollow trunnion C, for the purpose of raising
or lowering the temperature of the contents of the boiler to any desired extent.
Over the top of the boiler is fitted a chamber D (preferably without a jacket, as
shown) secured to the body A of the boiler by means of a flange or other suitable
arrangement, and separated therefrom by the perforated disc or diaphragm E, of
lead or other suitable metal or material which will not be attacked by the material
contained in the boiler, and serving to allow only liquid or volatile matter to pass
up into the chamber. F is the tap or valve to allow the gaseous or volatile matter
to escape when desired, and Ga gauge for indicating the height of the liquid in the
boiler,

page_text: A chamber His formed at the bottom of the body A of the boiler, and is separated
therefrom by the perforated disc or diaphragm I. This chamber H is connected by
pipe J to any suitable form of pumping or injecting apparatus, by means of which
fresh liquid, steam or other matter can be forced into chamber H, and thereby
caused to mix with any liquid already contained in the boiler, before coming in
contact with tho substance being operated upon, the liquid in the boiler being able
to pass into and fill the chamber H, through the perforations in the disc or
diaphragm I, while all solid matter is prevented from entering such chamber.
When the operation is completed the liquid can be drawn off through the
chamber H and pipe J.
The trunnions C and C of the boiler are mounted in bearings in the standards
or pillars K, so as to be capable of revolving therein, and the trunnion C' carries a
worm wheel M, with which gears a worm N, actuated by crank handles O on its
axis P. By turning the crank handles O the boiler can be caused to revolve, so as
to invert its position when required to empty the boiler.
In cases where it is not required to heat or cool the contents of the boilor the
jacket B may be abolished.
Having thus described the nature of my said Invention and the manner of
carrying the same into effect, I wish it to be understood that what I claim is :-
The improved boiler for digesting, rectifying, and for effecting chemical operations
generally, provided with a chamber at top separated from the body of the boiler by
a disc or diaphragm of lead or other suitable metal or material capable of resisting
the action of the Caterials to be used in the boiler; and also with a chamber at the
bottom similar y separated from the body of the boiler by means of a perforated
disc or diaphragm, and fitted with a pipe connected to suitable apparatus for
forcing or injecting liquid or gaseous matters into the body of the boiler, all
substantially as and for the purposes herein described and shown in the drawings.
In witness whereof, I, the said James Anthony Graham have hereunto set my
hand and seal, this tenth day of May in the year of our Lord one thousand
eight hundred and eighty-three.
Witness.
JAMES ANTHONY GRAHAM (L.S.)
HERBERT. J. ALLISON. Fel. Inst. P. A.
41 Southampton Bdgs
Holborn.