Improvements in or connected with Evaporating and Condensing Apparatus.
Year: 1891

page_text: Date of Application, 11th Aug., 1891
Complete Specification Left, 9th May, 1892-Accepted, 11th Aug.. 1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with Evaporating and Condensing
Apparatus.
1, JOSEPH REED of 3 Prudhoe Terrace, North Shields in the County of
Northumberland, Engineer, do hereby declare the nature of this invention to be
as follows:-
This invention relates to improvements in or connected with evaporating and
condensing apparatus and is specially applicable on board ships for the evaporation
of salt water so that distilled water may be readily available for drinking purposes
cattle use feeding boilers and like purposes.
My invention consists in the arrangement of pipes or coils of pipes for the
circulation of steam and in certain devices for effecting an automatic feed water
entry and exit atmospheric valve.
To effect my purpose I construct a shell or boiler of suitable design and on
opposite sides thereof I fit special chambers with doors and frames provided with
standpipes or equivalent means for effecting the entry and exit of steam to and
from the coils of piping arranged within the shell. These coils I prefer to arrange
in independent horizontal tiers cach separate coil receiving steain from a special
steam inlet chest and delivering its steam into a special steam outlet pipe or
receiver. The coils which may be spirally arranged are each intended to traverse
a portion only of the inner circumference of the shell so that two coils in the same
horizontal plane each carrying its own steam may be suitably arranged by which
any one coil may be the more easily removed for cleaning or repairing and re-fitting.
The jointing of the pipes may be effected by screwing down or forcing a conical
female union onto a inetallic ring let into a groove formed on the outside of the
conical male nipple. A door is provided on each opposite chamber for this
purpose.
The feed water entry is controlled by an automatic device consisting of a float
working in a chamber suitably connected to the interior of the shell. As the leve!
of water in the evaporator varies the float level varies and this motion is utilised
to actuate through the medium of suitable rods and levers or directly as required a
multiple piston valve device controlling the feed water entry port. The areas of
the pistons being equalised an equilibrium of pressures is produced in the spaces
separating them so that any leakage past one piston may be neutralised and in the
event of such leakage passing a terminal piston an equilibrium port or passage is
provided to restore the balance thus ensuring certainty of action in the feed.
The steam may find outlet from the ev: porator or evaporators through a
perforated pipe leading to an atmospheric or loaded or spring valve as the case
may be. This is arranged in connection with a condenser or vacuum chamber the
pressures from which are neutralised in respect of the valve by its exposure thereto
of double pistons or surfaces having equal areas arranged on a common spindle. A
screw down handle and spindle enables the atmospheric valve to be used as a stop
valve when so required and should the pressure in the evaporator shell from any
cause fall below atmospheric pressure then the valve closes due to its exposure to
the atmosphere through a small hole or opening in the valve casing provided
therefor.
The evaporator may be provided with water and pressure gauges safety valve
scum cock and access doors as and where required.
Evaporators of the above description may be coupled up or compounded so that
the steam from one at a certain pressure may be utilised to supply the evaporating

page_text: medium to the coils of a second evaporator which in turn may supply the
evaporating medium to a third evaporator and so on the last where more than one
are so arranged being connected to the condenser as above described. The valve
for each evaporator will be regulated to the pressures therein the valve on the last
only of the series being of the atmospheric type.
Dated this 8th day of August 1891.
A. CRAWHALL CHAPMAN,
3, St. Nicholas Buildings, Newcastle-on-Tyne,
Patent Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in or connected with Evaporating and Condensing
Apparatus.
I JOSEPH REED of 3 Prudhoe Terrace North Shields in the County of
Northumberland Engineer 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:-
This invention relates to improvements in or connected with evaporating and
condensing apparatus and is specially applicable on board of ships for the
evaporation of salt water so that distilled water may be readily available for
drinking purposes cattle use feeding boilers and like purposes.
My invention consists in the arrangement of pipes or coils of pipes for the
circulation of steam and in certain devices for effecting an automatic feed water
entry and exit atmospheric valve.
To effect my purpose I construct a shell or boiler as shewn on Sheet 1 and
marked A of suitable design and on opposite sides thereof I fit special chambers
with doors and frames provided with standpipes as shewn on Sheet 2 and
marked B B and O or equivalent means for effecting the entry and exit of steam
to and from the coils of piping arranged within the shell. These coils I prefer to
arrange in independent horizontal tiers as shown on Sheets 1 and 2 and marked E
each separate coil receiving steam from a special steam inlet chest as shown on
Sheets 1 and 2 and marked B₁ and delivering its steam into a special steam outlet
pipe or receiver as shown on Sheet 2 marked B².
The coils which may be spirally arranged as shown on Sheets 1 and 2 and
marked E are each intended to traverse a portion only of the inner circumference
of the shell as shown on Sheets 1 and 2 and marked E so that two coils in the same
horizontal plane cach carrying its own steam may be suitably arranged by which
any of the coils may be easily removed for cleaning or refitting purposes by the
handhole door marked O on Sheet 2 of the drawings.
The jointing of the pipe coils Sheets 1 and 2 marked E are made at the part
marked D on Sheet 2 these joints as shown in detail on Sheet 3 are effected' by
screwing down or forcing a conical female union marked A on Sheet 3 unto a
metallic ring marked C on Sheet 3 let into a groove formed on the outside of a
conical male nipple marked B on Sheet 3.
The feed water entry is controlled by an automatic device consisting of a float
as shown on. Sheet 1 Fig. 1 marked L working in a chamber as shown on
Sheet 1 Fig. 1 and marked M this chamber being connected to the interior of the
shell by branch pipes as shown on Sheet 1 Fig. 1 and marked P.
A multicable piston valve devise for controlling the entry of the feed water as
shown on Sheet 1 Fig. 1 and marked R is connected to the float marked L
Fig. 1 Sheet 1 by means of the spindle and levers marked C. When the evaporator
is empty of water the float marked L.Fig. 1, Sheet-1 by its own weight comes down
and raises the piston marked W Fig. 1 Sheet 1. The feed entry port marked' R
Fig. 1 Sheet 1 is then open and the feed water being put on a free enterance is

page_text: established through the opening marked R Fig. 1 Sheet 1 passed the piston
marked W Fig. 1 Sheet 1.
The feed water rises in the evaporator shell marked A Sheet 1 and passes
through the openings marked P Fig. 1 Sheet 1 into the chamber marked M Fig. 1
Sheet I when the chamber marked M Fig. 1 Sheet 1 becomes filled with water the
float marked L Fig. 1 Sheet 1 floats or rises and by means of the spindle and levers
marked the piston marked W Fig. 1 Sheet 1 falls and closes the feed port entry.
marked R Fig. 1 Sheet 1.
As the water in the evaporator shell marked A Sheet 1 is evaporated the water
level lowers uniformally, in the evaporator, shell marked A Sheet 1 and the
chamber marked M Fig. 1 Sheet I, consequently upon this lowering of the water
level the float L Fig. 1 Sheet 1 lowers simultaneously and operates through the
spindle and levers marked C Fig. 1 Sheet 1 upon the piston marked W and opens
the feed port entry marked R Fig. 1 Sheet 1 for the admission-of-feed water.
The evaporated steam may find outlet from the evaporator through a perforated
pipe marked T Sheet 1 and thence through an atmospheric valve marked Fig. 2
Sheet 1.
By this arrangement of piston valves marked K and K' Fig. 2 Sheet 1 a uniform
pressure is maintained in the evaporator. The lower piston marked K Fig. 2
Sheet 1 is actuated upon by any pressure in the evaporator shell marked A Sheet 1
while the upper piston marked K Fig. 2 Sheet 1 is actuated upon by the atmosphere
the opening marked Z Fig. 2 Sheet 1 may be connected to a vacuum chamber or
otherwise without the pressure in vacuum chamber or otherwise interfering with or
controlling the double piston valves marked K and K Fig. 2 Sheet 1.
Any pressure in the evaporator marked A Sheet 1 above atmospheric pressure
would lift the double pistons marked K and K Fig. 2-Sheet 1 and allow the steam
to flow from the evaporator marked A Sheet 1 through the opening marked Z
Fig. 2 Sheet 1 to the vacuum chamber.
In the event of the pressure in the evaporator marked A Sheet 1 falling below
the atmospheric pressure the pressure of the atmosphere would act upon the upper
piston marked K Fig. 2 Sheet 1 and close the piston valve marked K' Fig. 2
Sheet 1.
Whatever pressure should be at the opening marked Z Fig. 2 Sheet I would be
neutralized in respect to the piston valves marked K and K Fig. 2 Sheet 1 by its
exposure thereto of double pistons or surfaces having equal areas.
A screwed spindle and handle marked S enables the atmospheric valve Fig. 2
Sheet 1 to be used as a stop valve.
The evaporator may be provided with water and steam pressure gauges-safety
valves scum cocks-and access doors as and where required.
Evaporators of the above description may be coupled up or compounded so that
the steam from one at a certain pressure may be utilized to supply the evaporating
medium to the coils of a second evaporator which in turn may supply the evaporating
medium to a third evaporator and so on the last where more than one are so arranged
being connected to the vacuum chamber through the atmospheric valve Fig. 2
Sheet 1 the valve for each evaporator would be regulated to the pressure therein.
The valve on the last evaporator only of the series being of the atmospheric type
as described as shown Sheet 1 Fig. 2.

page_text: 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 1
claim is
L
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
claim is
1st. This arrangement of parts as herein described in the apparatus as shown or
Sheets 1 and 2.
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
claim is
1st. This arrangement of parts as herein described in the apparatus as shown or
Sheets 1 and 2.
2nd. The arrangement of automatic water feed as shown on Sheet 1 Fig. 1.
3rd. The atmospheric valve as shown on Sheet 1 Fig. 2.
4th. The metallic joint coupling as shown on Sheet 3.
Dated thin th
1000
JOSEPH REED,
3, Prudhoe Terrace, North Shields.