Improvements in Heating Water by means of Exhaust or other Steam, and in Apparatus therefor.
Year: 1892

page_text: Date of Application, 2nd July, 1892
Complete Specification Left, 4th Apr., 1893-Accepted, 20th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in Heating Water by means of Exhaust or other
Steam, and in Apparatus therefor.
I, JAMES WILSON MARTIN of 9 James Street in the City of Liverpool,
Engineer and Machinery Agent, do hereby declare the nature of this invention to
be as follows:-
This invention has for its principal object a method of heating water by means
of exhaust steam, without causing a back pressure on the exhaust and at the same
time very effectually heating the water to boiling point or thereabouts.
From any portion of the exhaust conduit I take a branch and expand it out into
a series of ports or nozzles entering a chamber. Through or in this chamber I
place a perforated tube preferably arranged in such manner that it can be drawn
out by means of a flange at one end and yet connect with a stationary fixed pipe
entering the chamber at the other end.
This can be effected by having an expanding joint or stuffing box device whereby
any little difference of expansion can be taken up without an escape. In place of a
perforated tube however a rose could be used if desirable. A pipe connects the
perforated tube at the stuffing box (or its equivalent device) with the supply
cistern, the latter preferably fitted with a ball cock.
From the bottom of the chamber containing the perforated pipe another pipe
leads to the pump. This pump pumps the water to the boiler or other place to be
supplied with hot water. A branch from the delivery pipe takes the surplus water that
may not be required to be used back again to the aforesaid cistern, by this means
the water can be heated over and over again.
I prefer to have a valve, self acting or otherwise, on the branch pipe leading to
the cistern so as to prevent any accidental return flow and also to shut off this
escape at any time that an extra pressure is required, or when the pump is not
being worked.
With regard to the ports for the steam, these can be of any number and any
fineness provided they are collectively sufficient to give the requisite supply.
One principle of my invention being that both steam and water escape into the
chamber in the form of jets and thus more entirely mingle with each other.
Dated the 1st day of July 1892.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Heating Water by means of Exhaust or other
Steam, and in Apparatus therefor.
1, JAMES WILSON MARTIN of 9 James Street, in the City of Liverpool, Engineer
and Machinery Agent, 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 principal object a method of heating water by means
of exhaust steam or live steam without causing a back pressure on the exhaust and
at the same tine very effectually heating the water to boiling point or there-
abouts.
The accompanying drawing of an actual apparatus constructed by me will best

page_text: describe the invention. It is a vertical section.
In this A is a box containing
water. Into this box enters the water supply pipe B by means of ball cock valves C.
Steam enters at D into the chamber I at the top or other convenient part.
E is a
tank containing the hot water. Fa float in the same, actuating valve G. As this
float descends it opens the valve G, and water flows out of the cistern A through
pipe I, and the perforations therein into chamber I. This chamber I can be
formed in one with chamber E but there is an advantage in having it separate, as
by this means any ordinary covered tank can be used for the chamber E.
pipe connecting the top of chamber A with chamber E; the connection is
shown in dotted lines. M is the exhaust outlet. The mode of action is as
follows:-
K is a
The exhaust or live steam being let into chamber I either by a single opening or
by numerous ports, heats the water within it and also in chambers E & A, the two
latter being connected by pipe K. It then is exhausted through pipe M. As the
.water in E is lowered by being drawn off, water descends from chamber A through
the rose pipe Hand falls through chamber in a shower, descending through and
absorbing the exhaust steam therein. From there it falls into chamber E still
taking up more exhaust steam. All the parts of this apparatus are designed as
much as possible so that they can be reversed, thus both sides of chambers E and I
are alike.
It is obvious that in place of a perforated tube for the water a rose can
be used instead that though it is desirable for the steam to enter the chambers
through numerous ports so as to be more quickly distributed, it can enter through a
single port. The pipe H is shown firmly attached to chamber I by flanges. It is
obvious however that it could pass into chamber I by means of a stuffing box and
also that if desirable the cistern A could be dispensed with and pipe I united direct
with the mains or other sources of supply, a valve; however, actuated by the float F
being used to control it. The pipe L leads to the pump. It is placed at considerable
distance above the bottom of chamber E to allow mud to settle, and I prefer to have
a mud cock at the bottom, not shown in the drawing, in order to blow or run off the
mud from time to time. One principle of my invention is that both the steam and
the water can escape into the chamber in the form of jets and thus more entirely
mingle with each other. It is more desirable however that the water should enter
as fine jets, than that the steam should.
In order to separate the oil or grease which is in the exhaust steam which is used
to heat or boil the feed water, I fix a sheet of gauze wire on which is laid or fixed
a cloth or other suitable material through which the steam or water can pass but
on the surface of which the oil or grease will settle or remain, thus preventing it
getting into the boiler with the feed water. This cloth or other suitable material
(with or without the gauze wire) may be fixed between the exhaust steam and spray
of water or anywhere between the pump and the perforated pipe inside the heater,
or in any other place found most suitable for the purpose of preventing the oil or
grease from entering the boiler with the feed water. One or more sheets of gauze
wire with cloths or other suitable material may be used either inside or outside the
heater as found most desirable.
I have described one way in which my invention may be carried into effect but it
is obvious that once given the general idea various alterations may be made without
departing from the principle of my invention. For example, the lower tank only
may be utilised if desired as the heating chamber and the perforated pipe H carried
into it. The chambers A & I being dispensed with, or when there are additional
sources of exhaust or live steam, one or more pipes may be led into the chambers to
assist in the heating of the water.
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. The improved method of heating water by means of exhaust or live steam, by
causing the water to enter into the upper part of a chamber by fine jets, and at the

page_text: same time admitting steam into the said chamber preferably through numerous
ports, whereby both the steam and the water are mixed together in a state of fine
divisions and are thereby more easily united.
2. The improved apparatus for heating water by means of exhaust or live steam,
in which the water is caused to enter the chamber near the top, in regulated quantity
and fine jets, the regulation being automatic substantially as described.
3. The apparatus for heating water by means of steam taken as a whole substan-
tially as and for the purposes described.
Dated this 1st day of April 1893.
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Nottingham, and London, Patent Agents.