apparatus
Year: 1888

page_text: Date of Application, 21st Apr., 1888
Complete Specification Left, 19th Nov., 1888
Complete Specification Accepted, 31st Dec., 1888
This Invention has for its objects, improvements in apparatus for generating steam
for distilling purposes.
Steam boilers, working at a high pressure of steam, want to make up feed of fresh
water quite independent of the water which is returned by condensation of exhaust
steam from engine, because of leakage &c.
If ordinary or salt water be used to make up the required feed water, the boilers
become dirty, and necessitate scaling. This Generator will obviate this by producing
distilled water.
To effect this, 1 use a case or cylinder, closed at top and bottom, and made air-tight.
Inside this case I fix one or two volutes same as described in my patent No. 205-1881.
Or, a set of helical copper tubes or coils so arranged inside one another that the
diameter of tubes from which the coils are made, are in exact ratio to the length of
each coil, increasing in circumference, as they take their position from centre to outer
this gives a uniform travel through passage or bore of coils in proportion to their
diameters, so that the steam passing through same, would have a uniform temperature.
These helical coils have screwed ends brazed on and connected to a gun-metal
receiver, so arranged that any coil can be removed in case of fracture or defect.
The whole to be placed in the beforementioned case, with inlet and outlet to side of
case with stop valve..
Immediately above this heating medium, 1 fix baffle plates one above another of
different diameters, the larger ones to fit side of case with a hole in the centre, the
smaller plate or diaphragm fixed immediately over large one with a space between, so
that the steam rising from the water, will be separated from it; and escape dry out of
top of case, out of main or other condenser, with or without a vacuum but I prefer a
vacuum, which enables the water in generator to boil at a lower temperature.

page_text: The steam from main boiler is admitted to beforementioned volutes or coils and then
passed on to the hot well of air pump of main engine.
The heat left in steam from nain boiler after passing from generator to hot well,
will heat up the feed water to that extent, the steam generated in case passes off to
condenser, and is condensed therein.
The feed water required for generator is admitted through a float box, fixed- to side
of case, with ball valve and stop valve, to regulate feed water supplying generator,
which water I take from main engine discharge pipe.
A pipe is fitted to the float box, and to the lower part of the generator case, and a
pipe from the float box to tlic top of the generator case; on top of generator I fix
a safety valve, and compound gauge to show, pressure or vacuum as the case may be.
By passing high pressure steam through this generator, and then on to the hot well of
air pump, this combined with the advantage of the vapour being raised under a
vacuum, (which enables the water to boil at a much lower temperature) a great saving
is effected in steam generation.
Dated this 20th dow nf´A

page_text: COMPLETE SPECIFICATION.
Improvements in Connection with Feed Water Apparatus for Steam
Boilers.
THOMAS JAMES RAYNER, 2 Perrys Close East India Road Poplar Coppersmith, 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 has for its object improvements in connection with feed water
apparatus for steam boilers.
1. +
Steam boilers working at a high pressure of steam require a make up feed of fresh
water quite independent of the water which is returned to boilers by condensation of
exhaust steam from engine, caused by leakage &c. If ordinary or salt water bo
Lused-to-make-up-the required-feed water, the boilers become dirty and necessitato
scaling.
'
The Steam Generator will obviate this by producing distilled water. To effect this
I use a case or cylinder A Fig. 1, closed at the top and bottom, and made tight.
Inside this case I fix volutes same as described in my Patent No. 205, 1881 or a series
of volute coils of any section or metal connected together with a vertical tube at
centre K Fig. 1A, with flanged joints or unions, also at outer ends of coils L Fig.. 1
and Fig. 1A. These volute coils may be disconnected from vertical tubes L and. K
Fig. 1 and Fig. 1A for cleaning or making good defects.
The whole to be placed in the before mentioned case A Fig. 1 with inlet B Fig. 1
and outlet C Fig. 1 jointed to door at I Fig. 1 on side of case A Fig. 1 which can be
removed bodily for examination.
Immediately above this heating medium I fix baffle plates one above another, of
different diameters the larger ones D Fig. 1 to fit side of case A Fig. 1 with a hole in
centre; the small plate or diaphragm, E Fig 1 fixed immediately over large one with
a space between, but without hole in centre, so that steam rising from the water will
he separated from it, and escape dry out of valve F Fig. 1 at top of case to main or
other condenser with or without a vacuum, but I prefer a vacuum, which enables the
water in generator to boil at a lower temperature.
The steam from main boilers is admitted to before mentioned volutes or coils at B Fig. 1,
and then passing out at C Fig. 1 to the hot well of air pump on main engines. The
heat left in steam after passing from generator to hotwell will heat up the feed
water contained therein to that extent.
The feed water required for supplying generator is admitted through a Float
box.G Fig. 1 fixed to side of case A Fig. 1, with a double seated ball valve to
regulate feed water supplying Generator which water I take from main discharge pipe
of main engines..
On top of case A Fig. 1, I fix a safety valve H Fig. 1 to relieve in case of excess
of pressure in case A Fig. 1, and a compound guage J Fig. 1 to show pressure or
vacuum as the case may be.

page_text: In some cases I use the volute coils before described to heat up the feed water for
steam boilers, to assist the boilers to generate steam only.
In that case I use a case E Fig. 2. with. covers G. Fig. 2 and F Fig. 2. Either
branch C Fig. 2 admits the feed water and passing over volute coils comes out at
either branch D Fig. 2. The steam from boilers is admitted to volutes at A Fig. 2
and out at B Fig. 2 heating the feed water in its passage.
In dealing with exhaust or low pressure steam I reverse the processes as regards the
inlets and outlets. If I want to make condensed water only; for boiler feed or
drinking purposes, I place volute coils in a suitable case A Fig. 3 admitting pressure
steam at C Fig. 3 and out at B Fig. 3 the circulating water passing in at D Fig. 3,
and out at E Fig. 3 cooling the steam passing through volutes in its passage.
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:-
First. The use of a series of volute coils of any section, but I prefer round connected
together at centre and outer ends of volutes to vertical tubes L and K Fig. 1 and
Fig. 1A and so arranged that vapour is produced from sea or other water, which is
afterwards condensed for boiler feeding.
Second. The use of a series of volute coils of any section connected together at
centre and outer ends of volutes to vertical tube L and K Fig. 1 and Fig. 1A, so
arranged in case that water passed through becomes heated and fit for feeding boilers.
Third. The use in surface condensers producing fresh water by the condensation of
steam from a series of volute coils of any section, connected together at centre and
outer ends of volutes to vertical tube Land K Fig. 1 and Fig. 1A such coils being in
a casing through which a stream of water is driven substantially as described. This
can be used for boiler feeding or drinking purposes as desired:
In witness whereof I the said Thomas James Rayner have hereunto set my hand
and seal this 17th day of November in the year of our Lord. One thousand eight
hundred and eighty eight.