IMPROVEMENTS IN AND RELATING TO EVAPORATING APPARATUS
Year: 1884

page_text: I HENRY HARRIS LAKE, of the firm of Haseltine, Lake and Co, Patent Agents
Southampton Buildings, London, in the County of Middlesex do hereby declare
the nature of said Invention for "IMPROVEMENTS IN AND RELATING TO
EVAPORATING APPARATUS" to be as follows:-
This Invention relates to evaporating apparatus having multiple effect, which
apparatus is illustrated, by way of example, in the accompanying Drawings.
Figures 1 and 2 represent, in vertical section and in plan, one arrangement
drawn to an enlarged scale, of a series of tubes forming part of the improved
apparatus.
Figure 3 is a vertical section shewing a modification of the same, as regards the
admission of steam.
Figures 4, 5 and 6 represent in vertical section the general arrangement of the
said apparatus drawn to a reduced scale.
Figures 8, 9 and 10 are horizontal sections of the said apparatus on the lines 1-2,
3-4 and 5-6 Figures 4, 5 and 6.
Figure 7 shews the arrangement of an improved condenser.
The steam enters the tubular portion of the apparatus at the centre instead of
entering at one or more points of the circumference as in analogous apparatuses.
The steam is admitted into the said tubular portion either at the top as shewn in
Figures 1, 4, 5, 6 through the tube G, or at the bottom as shown in Figure 3
through the tube H. The connection of the steam admission pipe with the tube-
plate is effected, either by means of a flanger as shewn in Figure 3, or by means
of a stuffing box 8 allowing for expansion and contraction as shewn in Figures 1,
4 5 and 6.
The steam circulates in the tubular part (Figure 1) following a circuit formed
by a partition t (Figure 2); at the extremity of this circuit the water of
condensation flows from the tubular portion of the apparatus by means of a pipe I
and the inert vapors or gases are removed from the casing by a perforated tube J.
At the upper part of the casing, I form a safety vessel by means of two concentric
annular pieces K L (Figures 5 and 6); the liquid carried away by the steam falls

page_text: to the bottom of the vessel at M (Figure 5) and returns to the apparatus through
the tube N. I may substitute for this tube another tube O as shewn in Figure 5
which should be connected to the succeeding casing in order to cause the liquid
from the safety vessel to enter the same by reason of the difference in level when-
ever a cock P placed upon this tube is opened. A water-gauge Q with a glass
tube permits the filling up of the vessel to be controlled.
In order to prevent the projection of the liquid along the walls of the central
tube, and its entrance into the safety vessel, I provide circular pieces RS,
Figures 5 and 6, forming dripping pieces; these pieces are made of cast iron and
integral with, or fixed upon, the pieces to which they are connected.
Another method of causing the steam to circulate in the tubular part of the
apparatus is as follows viz. The steam arriving centrally (Figures 4, 5 and 6)
expands in the casing and the mixed vapors and gases are removed at the
circumference of the said casing; in Figures 4, 5 and 6 are shewn two different
arrangements for the removal of these vapors. In the arrangement shewn in
Figure 4, I form an annular chamber x by means of a ferrule T provided with
small perforations; the vapours introduced into this chamber pass out through the
pipe U. In the arrangement shewn in Figures 5 and 6, I place at various
intervals the pipes V the lower part of which is closed, and the portion which is
situated in the tubular chamber is provided with small perforations, these tubes
are connected to a single outlet z.
In both the above arrangements the inert vapors collected either in the tubes V,
(Figures 5 and 6) or in the annular chamber (Figure 4) are introduced into the
succeeding tubular portion (as shewn in Figures 5 and 6) by means of the tube W
so that the steam which may be mixed with the said inert vapors shall be utilized.
A cock X permits the regulation of the power of suction which is exerted by one
tubular portion upon another by reason of the difference of pressure and which is
produced in the latter tubular portion by the condenser.
I provide two different devices for removing the water of condensation from the
bottom of the tubular portion; one of these devices consists of a trough Y (Figures 5
and 6) formed in the bottom plate, in which trough is inserted the open extremity
of a tube Z through which water of condensation is drawn out by means of a
pump or otherwise; a retaining valve d prevents the entrance of water or air in
case the suction of the water should not take place. The other device (Figure 4)
consists in several tubes a for drawing the water from the bottom of the tubular
portion and connected to a piece b from which an egress is obtained by means of
the pipe C.
In either of the above arrangements the water from one tubular portion is
drawn by the succeeding tubular portion and that from the latter tubular portion
by a pump (Figures 5 and 6). The cocks e permit the passage of the water to be
regulated. I have moreover modified the condenser as shewn in Figure 7. The
water arrives at the top through the pipe f and falls upon the trays or projections g
in the form of a cascade. The steam arrives through the pipe h; the water of
condensation is drawn out by the air-pump through the pipe i; the said trays or
projections are supported by a shaft j, carried by the bottom plate k; the removal
of this plate permits that of the trays or projections g for cleaning purposes.
Thin noth dose of T 1884

page_text: IN AND. RELATING
ΤΟ
I HENRY HARRIS LAKE, of the firm of Haseltine, Lake, and Co, Patent Agents,
Southampton Buildings, London, in the County of Middlesex do hereby declare
the nature of my Invention for "IMPROVEMENTS
EVAPORATING APPARATUS" and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement :-
This Invention relates to evaporating apparatus having multiple effects, which
apparatus is illustrated by way of example in the accompanying Drawings.
Figures 1 and 2 represent a vertical section and a horizontal section drawn to an
enlarged scale shewing one arrangement of part of the improved apparatus.
Figure 3 is a vertical central section shewing a modification of the same as
regards the admission of steam,
Figures 4, 5 and 6 represent, in vertical section, the general arrangement of the
said apparatus, drawn to a reduced scale.
Figure 7 shews the arrangement of an improved condenser hereinafter described.
Figures 8, 9 and 10 are horizontal sections of the said apparatus on the
lines 1-2, 3-4 and 5-6 Figures 4, 5 and 6.
The steam enters the tubular portion of the apparatus at the centre instead of
being admitted at one or more points around the circumference as in analogous
apparatuses heretofore used. The steam is moreover admitted into the said
tubular portion either at the top as shewn in Figures 1, 4, 5, 6 through the tube or
pipe G or at the bottom as shewn in Figure 3 through the tube or pipe H. The
connection of the steam admission pipe with the tube-plate is effected, either by
means of a flanger as shewn in Figure 3, or by means of a stuffing box 8, as
shewn in Figures 1, 4, 5 and 6, which permits the expansion and contraction of
the said pipe. The steam circulates in the said tubular portion of the apparatus
following a circuit formed by a partition t (Figure 2); at the extremity of this
circuit the water of condensation flows from the tubular portion of the apparatus
by means of a pipe I and the inert vapors or gases are removed from the bottom
to the top of the box or casing of the apparatus by a perforated tube J.
At the upper part of the casing, I form a safety vessel by means of two concentric
annular pieces or cylinders K L (Figures 5 and 6); the liquid carried along with
the steam, falls to the bottom of the said vessel at M (Figure 5) and returns to the
apparatus through the tube or pipe N (Figure 6). I sometimes substitute for this
tube another tube or pipe O as shewn in Figure 5, which tube or pipe should be
connected to the casing of the succeeding apparatus in order to cause the liquid
from the safety vessel to enter the same by reason of the difference in the pressure
whenever a cock P placed upon the tube or pipe O is opened. A water gauge Q
having a glass tube permits the level of the liquid in the vessel to be ascertained
and thus facilitates the maintenance of the said liquid at [the desired level. In
order to prevent the projection of the liquid along the walls of the casing or of
the central tube G and its entrance into the safety vessel, I provide circular
guards R, S, Figures 5 and 6 which form dripping pieces, and which are either cast
with, or subsequently attached to, the said casing or tube.
Another method of causing the steam to circulate in the tubular part of the
apparatus is as follows viz.: The steam arriving at the centre of the apparatus
(Figures 4, 5 and 6) expands as it is distributed in the casing, and the mixed
vapors and gases are removed at the circumference of the said casing. In
Figures 4, 5 and 6 are shewn two different arrangements for the removal of these

page_text: vapors. In the arrangement shewn in Figure 4 I form an annular chamber by
means of a ferrule T provided with small perforations; the vapors introduced into
this chamber pass out through the pipe U. In the arrangement shewn in
Figures 5 and 6, I place, at suitable intervals, pipes V the lower ends of which are
closed, and the portions of which situated in the tubular chamber are provided with
small perforations; these tubes are connected with a single outlet z.
In both the above arrangements the inert vapors collected either in the tubes V
(Figures 5 and 6) or in the annular chamber (Figure 4) are introduced into the
tubular portion of the succeeding apparatus as shewn in Figures 5 and 6 by means
of the tube W so that any steam which may be mixed with the said inert vapors
shall be utilized. A cock X permits the regulation of the suction which is exerted
by one tubular portion upon another by reason of the difference of pressure
therein; and which is produced in the last tubular portion by the condenser.
I provide two different devices for removing the water of condensation from the
bottoms of the tubular portions. One of these devices consists of a trough or
channel Y (Figures 5 and 6) formed in the bottom plate, in which trough is
inserted the open extremity of a tube Z through which the water of condensation
is drawn out by means of a pump or otherwise; a retaining valve d. prevents the
reflux of the water or air into the apparatus. The other device (Figure 4) consists
of several tubes a, for drawing the water from the bottom of the tubular portion,
connected to a piece b which is provided with an outlet pipe c.
In either of the above arrangements the water from one tubular portion is
drawn into the succeeding tubular portion and that from the last tubular portion is
drawn therefrom by a pump. The cocks e permit the passage of the water to be
regulated or controlled.
I modify the condenser as shewn in Figure 7. The water enters the said
condenser at or near the top through the pipe f and falls upon the stepped trays or
projections g in the form of a cascade. The steam enters the said condenser
through the pipe h, and the water of condensation is drawn out by an air-pump
through the pipe i; the said trays or projections are supported by a shaft j carried
by the bottom plate k, the removal of this plate permits that of the trays or
projections g for cleaning purposes.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what
I claim is:
The above described improvements in and relating to evaporating apparatus,
which improvements comprise
First. The admission of the steam at the centre of the tubular portion of the
apparatus either from above or from below.
Second. The passage of the steam-admission pipe through a stuffing-box which
permits the expansion and contraction of the said pipe.
Third. The formation of a circuit by means of a partition which conducts the
steam from the centre to the outer wall of the casing after having caused it to
come in contact with all the tubes.
Fourth. The removal of the inert vapors at the end of the said circuit by a
perforated tube or pipe which effects such removal from the bottom to the top of
the chamber.
Fifth. The removal of the water of condensation at the end of the said circuit
for the steam.
Sixth. The removal of the inert vapors by means of tubes or pipes placed at
suitable distances apart against the wall of the box or casing, by the distribution
in all directions of the steam introduced at the centre of the tubular portion of the
apparatus.
:
Seventh. The passage of the inert vapors drawn from the tubular portion of one
apparatus into that of the succeeding apparatus or into the condenser, by the
difference of pressure therein.

page_text: Eighth. The passage of the water of condensation from the tubular portion of
one apparatus into that of the succeeding apparatus by the difference of pressure
therein, and the insertion of a retaining valve to prevent the reflux of the water.
Ninth. The formation at the top of the box or casing, of a safety vessel, by means
of two concentric annular pieces or cylinders.
Tenth. The application of circular dripping-pieces for preventing the projection
of liquid along the walls of the casing or of the central tube or pipe into the said
safety vessel.
Eleventh. The formation of a cascade of water in the condenser by means of
the removable stepped trays or projections.
Dated this 98th dex of Santambo= 1001