Improvements in Evaporating Apparatus.
Year: 1894

page_text: Date of Application, 22nd May, 1894
Complete Specification Left, 3rd July, 1894-Accepted, 4th Aug., 1894
PROVISIONAL SPECIFICATION.
Improvements in Evaporating Apparatus.
I, THOMAS CRANEY, of 624 Harrison Street, Bay City, Michigan, United
States of America, Manufacturer, do hereby declare the nature of this invention to
be as follows:-
The invention consists in the peculiar construction of a furnace or fire evaporating
pan and its combination with two or more steam evaporating pans, whereby the
steam generated in the furnace pan may be used for double or triple expansion in
the steam pans.
The invention further consists in the combination with two furnace pans of an
intermediate series of steam pans and connecting pipes and valves arranged so
that both furnace pans may be used independently or for double expansion with one
of the steam pans, or either may be used for triple expansion with both steam
pans, and further, in the peculiar construction, arrangement and combination of the
various parts.
The furnace evaporating paus are alike, therefore a description of one will suffice
for both.
The furnace is arranged on a suitable foundation wall the said furnace having
feed doors on each side, and being made of any known and usual construction. A
casing, preferably of sheet iron, extends above the furnace, within which casing is
formed the combustion chamber and having a closed conical top. Another sheet
metal casing is arranged concentrically to the said casing and extends around and
above the same, and forms within, the evaporating chamber. A goose neck is
arranged on the top of the evaporating chamber for carrying off the vapours, and a
condenser which may be of any suitable or known construction is provided in the
downward portion of said goose neck, the said condenser having a discharge pipe
below the same.
Outside the casing is an annular casing of sheet metal or other material, forming
between it and the evaporating chamber casing a smoke chamber which is provided
at the top with suitable smoke pipes or chimneys.
A series of tubes connect the combustion chamber and the smoke chamber and
passes through the annular heating chamber surrounding the combustion chamber.
A settling chamber is arranged below the furnace and connecting with the lower
end of the heating chamber, preferably formed in the shape of legs on either side of
the furnace, and connecting at their lower ends into a trunk, having a suitable
elevator for carrying off the salt crystals as they form and settle into the bottom of
the legs.
The steam evaporating pans are formed of a sheet metal casing, having within a
steam chamber connected with an outer steam ring and evaporating chamber. From
the top of the evaporating chamber extends a goose-neck having a condenser in the
discharge leg thereof, and a discharge pipe from the condenser.
arrange the furnace evaporating pan, in connection with two steam evaporating
pans with suitable connections, so that the furnace evaporating pan may be used
independently or may be used for double or triple expansion, in connection with the
steam pans.
As such furnace pans may often need repairs, I may arrange a second furnace-pan
in similar relation to the steam pans, but at the other end of the series with
connecting pipes, so that this pan may also be used independently or in connection
with one steam pan or both pans for double or triple evaporation, or I may use both

page_text: the furnace pans independently, or in connection with the steam pan to effect a
double evaporation with both.
The connecting pipes comprise what I call the trunk pipe having valved.
branches into which the discharge from the two furnace pans and the two steam
pans connect each of these discharge pipes being provided below the trunk pipe
with a controlling valve.
Valves are arranged in the trunk pipe, and valved pipes connect the trunk pipe
with the steam ring of the steam pans, two for each pan.
The parts being thus constructed their operation is as follows:
If I desire to use both of the vacuum pans for double expansion, fire being
started in both of the furnaces, the steam is generated therein and passing out of
the goose necks of both pans and into the trunk pipe through the branches and
into the steam ring and steam chamber of the two steam pans, effecting evaporation
therein, the vapour is discharged through the goose necks of the steam pans, the
condensers of both steam pans being in operation.
If it is desired to use but one furnace for triple expansion, say the right hand
furnace pan, the vapour will pass from that pan into the trunk pipe, through the
branch, into the steam ring of the next pan, the vapour from which will pass
through the goose neck into one branch, and thence through a pipe into the steam
ring and steam chamber of the succeeding pan, the vapour from which will pass out
through its goose neck, the only condenser in the discharge pipe of the steam pan
being in operation.
It is evident that the same arrangement may be accomplished, starting with the
left-hand furnace pan and using the two following steam pans successively.
By closing the trunk pipes, it is evident that either furnace pan can be used
independently the condenser in the discharge pipe being in operation.
Steam may be supplied to the steam ring of the steam pans from an independent
steam generator, if desired to operate the steam pans separately, as it will be
observed they are otherwise complete capable of independent operation.
Dated this 22nd day of May 1894.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Evaporating Apparatus.
I, THOMAS CRANEY, of 624 Harrison Street, Bay City, Michigan, United
States of America, Manufacturer, do hereby declare the nature of this invention and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:
The invention consists in the peculiar construction of a furnace or fire evaporating
pan and its combination with two or more steam evaporating pans, whereby the
steam generated in the furnace pan may be used for double or triple expansion in
the steam panя.
The invention further consists in the combination with two furnace pans of an
intermediate series of steam pans and connecting pipes and valves arranged so that
both furnace pans may be used independently or for double expansion with one
of the steam pans, or either may be used for triple expansion with both steam
pans, and further, in the peculiar construction, arrangement and combination of the
various parts.
In the accompanying drawings I have shown how my said invention may be
conveniently and advantageously carried into practice.
Figure 1 is a front elevation of my improved apparatus.
Figure 2 is an horizontal section on line a Figure 1.

page_text: pans, and
Figure 4 is a similar section through one of the steam pans.
Similar letters of reference indicate corresponding parts in the several figures of
the drawings.
The furnace evaporating pans are alike, therefore a description of one will suffice-
for both.
A is a suitable foundation wall. B is a furnace arranged thereou preferably
having feed doors on each side and of any known and usual construction: D is a
casing preferably of sheet iron, extending above the furnace, within which is.
formed the combustion chamber E and having a closed conical top. F is a sheet
metal casing arranged concentrically with the casing D and extending around and
above the same, and forms within, the evaporating chamber G.
H is a goose neck on the top of the evaporating chamber for carrying off the
vapours. I is a condenser which may be of any suitable known construction
arranged in the downward portion of said goose neck and J is a discharge pipe
below the condenser.
Outside the casing F is an annular casing K of sheet metal or other material,.
forming between it and the casing F a smoke chamber L, which is provided at the
top with suitable smoke pipes or chimneys M.
N represent a series of tubes connecting the combustion chambers E with the-
smoke chamber L and passing through the annular heating chamber N¹ surrounding
the combustion chamber.
O is a settling chamber arranged below the furnace and connecting with the
lower end of the chamber N¹ preferably formed in the shape of legs on either side
of the furnace, as shown in Figure 3, and connecting at their lower ends into a
trunk P, having a suitable elevator for carrying off the salt crystals as they form
and settle into the bottom of the legs.
The steam evaporating pans are formed of a sheet metal casing, having within a
steam chamber Q connected with an outer steam ring Q and evaporating
chamber Q2. From the top of the evaporating chamber extends a goose-neck Q³
having a condenser R in the discharge leg thereof, and a discharge pipe R' from the
condenser..
I arrange the furnace evaporating pan 1, in connection with two steam evaporating
pans 2, 3 with suitable connections, so that the furnace evaporating pan may be
used independently or may be used for double or triple expansion, in connection.
with the steam pans.
As such furnace pans may often need repairs, I may arrange a second furnace-.
pan 4 in similar relation to the steam pans, but at the other end of the series with.
connecting pipes, so that this pan may also be used independently, or in connection.
with one steam pan or both pans for double or triple evaporation, or I may use both
the furnace pans independently, or in connection with the steam pan to effect a.
double evaporation with both.
The connecting pipes are shown in Figure 2 and comprise what I will call the-
trunk pipe 5 having valved branches 6, 7, 8 and 9, into which the discharge from.
the two furnace paus and the two steam pans connect, each of these discharge pipes.
being provided below the trunk pipe with a controlling valve 10.
11, 12 and 13 are valves in the trunk pipe, 14, 15, 16 and 17 are valved pipes
connecting the trunk pipe with the steam ring of the steam pans, two for-
each pan.
The parts being thus constructed their operation is as follows:
If I desire to use both the vacuum pans for double expansion, fire being started
in both of the furnaces, the steam is generated therein and passing out of the goose
necks of both pans and into the trunk pipe through the branches 14 and 17
respectively and into the steam ring and steam chamber of the two steam pans,
effecting evaporation therein, the vapour is discharged through the goose necks of
the steam pans, the condensers of both steam pans being in operation.

page_text: If it is desired to use but one furnace for triple expansion, say the furnace pan 1.
the vapour will pass from that pan into the trunk pipe, through the branch 17, into
the steam ring of the pan 2, the vapour from which will pass through the goose
neck into the branch 8 and thence through the pipe 15 into the steam ring and
steam chamber of the succeeding pan 3, the vapour from which will pass out
through its goose neck, the only condenser in the discharge pipe of the steam pan
being in operation.
It is evident that the same arrangement may be accomplished, starting with the
furnace pan 4, and using the steam pans 3 and 2 successively.
By closing the trunk pipes, it is evident that either furnace pan can be used
independently, the condenser in the discharge pipe being in operation.
Steam may be supplied to the steam ring of the steam pans from an independent
steam generator, if desired to operate the steam pans separately, as it will be
observed they are otherwise complete and capable of independent operation.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :
1. In a multiple evaporating apparatus, the combination of a series of evaporating
pans, each having a discharge pipe for vapour, and a settling leg or chamber, of
pipe connections whereby each evaporator may be operated separately or in series
for double or triple expansion.
2. In an evaporating apparatus, the combination of a furnace pan, complete and
capable of independent operation, of a series of steam pans, and connections between
the vapour discharge pipe of the furnace pan, and between the steam pans whereby
the pans may be operated for double or triple expansion with the furnace pan.
3. In an evaporating apparatus, the combination of a furnace pan complete and
capable of independent operation of a steam pan, a valved connection from the
vapour pipe of the furnace pan to the steam chamber of the steam pan, and a
condenser for the discharge pipe of the steam pan.
4. In an evaporating apparatus, the combination of the outer casing having a
vapour outlet at the top, an inner casing concentrically arranged and forming an
annular flue between a smoke chamber outside the outer casing, tubes extending
from the inner to the outer casing through the annular flue, separate, tapering
settling chambers at the lower end of the annular flue connecting with the elevator
trunk P.
5. In an evaporating apparatus, the combination of the inner and outer casing
forming an inner combustion chamber and an outer evaporating pan, a smoke
chamber outside the evaporating pan, a series of flues connecting the smoke
chamber with the combustion chamber through the evaporating pan, the settling
leg, and the elevator connecting it at the base of the settling leg.
6. In an evaporating apparatus, the combination of an evaporating tank, a
combustion chamber within and a smoke chamber outside thereof, a series of
flues connecting the combustion and smoke chambers through the tank, means for
removing the accumulated sediment from the bottom of the tank, an evaporating
chamber above the combustion chamber, a conduit for the vapour from the
evaporating chamber, and a condenser.
Dated this 3rd day of July 1894.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.