Improved Means for Heating, by Exhaust Steam, Water for Feeding Steam Boilers and for other purposes.
Year: 1893

page_text: Date of Application, 17th Feb., 1893
Complete Specification Left, 17th Nov., 1893-Accepted, 23rd Dec., 1893
PROVISIONAL SPECIFICATION.
Improved Means for Heating, by Exhaust Steam, Water for Feeding
Steam Boilers and for other purposes.
I, GEORGE GOWAN, of 114 Rocky Lane and Holt Street, both in the City of
Birmingham, Miller and Coal Dealer, do hereby declare the nature of this invention
to be as follows:-
This invention consists of the hereindescribed improved means for heating the
feed water of steam boilers and water for other purposes by the exhaust steam from
steam engines or other steam motors.
I will describe my invention as applied to heating the feed water of a steam
boiler. I provide two pipes or pipe like chambers of suitable size which for
distinction I will call A and B. The pipe A is of a larger cross sectional area than
the pipe B and at one end the pipe A is connected to a cold water supply (preferably
under a slight pressure) and at the other end has a smaller outlet connected as close
as possible to the suction valve of the feed pump. The said two pipes A and B are
fixed together in a horizontal position the smaller pipe B being by preference on
the top of the larger pipe A or the pipes may be arranged side by side. There are
tubular branches say six in number more or less formed on and projecting from the
top of the larger pipe A which by flanges or other means are connected to corre-
sponding tubular branches formed on and projecting from the under-side of the
smaller pipe B. On the top or other convenient part of the pipe B is a branch to
which a branch pipe leading from the exhaust pipe of the steam engine or other
steam motor is connected. There is a cock or valve in the exhaust branch to
regulate the quantity of exhaust steam passing into the pipes A and B and there is
a cock or valve in the said cold water supply pipe to regulate the quantity of cold
water passing into the pipe A.
When the feed water heating apparatus above described is in action the feed
pump draws the water from the cold water supply through the pipe A and as the
water passes through this pipe its temperature is raised very considerably by the
exhaust steam entering the said pipe A through the various exhaust steam inlet
branches from the pipe B. By means of the said cock or valve in the exhaust pipe
the quantity of exhaust steam entering the pipes A and B can be regulated as
required and by the cock or valve in the cold water supply the quantity of cold
water entering the heater and the speed at which the water passes through the
heater can be regulated so as to take up the greatest possible quantity of heat from
the exhaust steam. The employment of this cock or valve in the cold water
supply and arranging for a single cock or valve to regulate the exhaust steam
admission through all the branches to pipe A are important features of this
invention.
Any dirt or other obstruction in the pipe A can without disturbing the pipe A
or the exhaust pipe readily be removed by first disconnecting the branches of the
pipe B when the interior of the pipe A will be open for examination through its
nozzles and if desired the pipe A can then be washed out through a hole in the
bottom of the same which hole is at other times closed' by a removable plug.
The pipe A may if desired be provided with a stand or with feet for
supporting it.
Dated this 16th day of February 1893.

page_text: COMPLETE SPECIFICATION.
Improved Means for Heating, by Exhaust Steam, Water for Feeding
Steam Boilers and for other purposes.
-
I, GEORGE GOWAN, of 114, Rocky Lane and Holt Street, both in the City of
Birmingham, Miller and Coal Dealer, 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 consists of the hereindescribed improved means for heating the
feed water of steam boilers and water for other purposes by the exhaust steam from
steam engines or other steam motors.
I will describe my invention as applied to heating the feed water of a steam
boiler and I will refer to the accompanying drawings on which
Fig. 1 is a side elevation and Fig. 2 is an end elevation of a feed water heating
apparatus constructed according to my invention and Fig. 3 is a sectional plan of
the same on line X X of Fig. 1.
The same letters of reference indicate the same or corresponding parts in all the
figures of the drawing.
I provide two pipes or pipe like chambers of suitable size marked respectively A
and B. The pipe A is of larger cross sectional area than the pipe B and at one
end the pipe A is connected as by the pipe c to a cold water supply (preferably
under a slight pressure) such as the elevated tank d and at the other end the pipe A
has a smaller outlet pipe e connected as close as possible to the suction valve of the
feed pump (not shewn on the drawing) which supplies the heated feed water to
the steam boiler. The two pipes A B are fixed together in a horizontal position
the smaller pipe. B being by preference on the top of the larger pipe A or the
pipes A and B may be arranged side by side. There are tubular branches a say
six in number more or less formed on and projecting from the top of the larger
pipe A which by flanges or other means are connected to corresponding tubular
branches marked 6 formed on and projecting from the under side of the smaller
pipe B. On the top or other convenient part of the pipe B there is a branch f
with which a branch pipe g leading from the exhaust pipe of the steam engine or other
steam motor is in connection. There is a cock or valve h in the exhaust branch 9.
to regulate the quantity of exhaust steam passing into the pipes B and A and a
there is a cock or valve i in the cold water supply pipe c to regulate the quantity
of cold water passing into the pipe A.
.I
When the feed water heating apparatus above described is in action the feed
pump draws the water from the cold water supply d through the pipe A and as
the water passes through this pipe its temperature is raised very considerably by 3
the exhaust, steam entering the said pipe A through the various exhaust steam
inlet branches ab from the pipe B. By means of the cock or valve h in the.
exhaust pipe g the quantity of exhaust steam entering the pipes B and A can be
regulated as required and by the cock or valve i in the cold water supply the quantity
of cold water entering the heater and the speed at which the water passes through the
heater can be regulated so as to take up the greatest possible quantity of heat from
the exhaust steam. The employment of this cock or valve i in the cold water
supply c and arranging as described for a single cock or valve such as to regulate
the exhaust steam admission through all the branches a of the pipe A are
important features of this invention.
78
Any dirt or other obstruction in the pipe A can without disturbing, the pipe A
or the exhaust pipe 9 or valve h be readily removed by first disconnecting the
branches 6 from the branches a and the branch from the cock or valve / when
the pipe B can be removed and the interior of the pipe A will then be open for
examination through its nozzles or branches a aud if desired the pipe A can then 5
be washed out through a hole in the bottom of the same which hole is at other

page_text: times closed by a removable plug į. The pipe A may if desired be provided with
feet such as for supporting it or it may be fixed on brackets or on a brick
foundation or otherwise supported as will be readily understood.
The apparatus shewn upon my drawing is suitable for a steam engine and boiler
of about twenty nominal horse power and I have drawn it to the scale shewn so
that the proportions of feed water heaters for larger or smaller engines and boilers
can readily be arrived at.
I am aware that prior to my invention a feed water heater has been made with
a pipe such as A connected at one end to a cold water supply and at the other end
to the suction inlet of the feed pump and receiving the exhaust steam through
branches such as a but heretofore each of these smaller branches a has been
provided with a separate cock for regulating the admission of the exhaust steam
thereby adding to the expense of the apparatus and making it difficult to ensure
the same amount of steam passing through all the branches a which difficulty I
entirely overcome by adding the pipe B and the single cock or valvè arranged
as hereinbefore described.
Instead of the branches of the pipe B being connected to the branches a of
the pipe A by flanges or by other means which would make the pipe B removable
it will be evident that without departing from the nature of my invention the
branches 6 and a may be cast together that is to say the pipes A and B with their
branches will form one casting.
Instead of making the pipe B with the branch f for attaching the regulating
valve or cock h as above described and shewn on the drawing this branch ƒ may be
dispensed with and the valve or cock & be fixed to one of the ends of the pipe B
as may be found most convenient.
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 an apparatus for heating water by exhaust steam and in combination with
the pipe or chamber A thereof through which passes the water to be heated said
pipe A being made with exhaust steam inlet branches such as a, the removable or
fixed pipe B provided with a regulating valve or cock and made with branches
such as b fixed to the branches a of the pipe A so as to control and distribute the
supply of steam to all the branches a of the pipe A by the one valve or cock as
set forth.
2. In combination with an apparatus constructed as denoted under claim one
for heating water by exhaust steam, the combination of the cold water regulating
valve or cock to regulate the supply of water passing into the heating pipe A as
set forth.
3. The combination of parts constituting the improved apparatus for heating
water by exhaust steam arranged substantially as hereinbefore described and
illustrated by the accompanying drawing.
Dated this 16th day of November 1893.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.