Improvements in Feed Water Heaters and Condensers.
Year: 1892

page_text: Date of Application, 16th Apr., 1892
Complete Specification Left, 16th Jan., 1893-Accepted, 18th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in Feed Water Heaters and Condensers.
We, JOHN JARDINE and WILLIAM JARDINE, both of Windmillhill Street,
Motherwell, in the County of Lanark, Engineers, do hereby declare the nature of
this invention to be as follows:-
Our invention relates to improvements in feed water heaters and is especially applic-
able to those using exhaust steam, and especially designed for rolling mill engines and
applicable to all classes of high pressure engines. Our object is to construct an
inexpensive and effective feed water heater in which the exhaust steam is entirely
separated from the feed water, and back pressure is quite obviated.
In carrying our invention into effect we construct a cylindrical vessel preferably
of iron or steel and arrange within it two tube plates through which pass a large
number of tubes expanded at their ends into the said tube plates, or otherwise
fastened in any convenient manner. End plates cover in the chambers at each end
of the said tubes, and the exhaust steam from the engine passes into one chamber,
thence through the tubes to the second chamber and escapes by the escape pipe to
the atmosphere. The feed water passes into the middle chamber between the tube
plates and is effectively heated by the exterior surfaces of the tubes, after which
it passes by an outlet pipe to the boiler.
A manhole and door are provided to each of the external chambers and also to
the feed water chamber. A blow off cock is attached to the feed water chamber
and connections are made to drain off the condensed steam. Plugs are provided
in the tube plates at suitable positions to allow deposit to be cleaned away from
the tubes.
By our invention any cylindrical vessel such as an old boiler may be inexpensively
converted into a feed water heater.
Our improved feed water heater may be adapted as a surface condenser and by
giving the condensed steam water pipe a fall of not less than 30 feet we may
dispense entirely with the use of an air pump. A syphon may be adopted also to
discharge the condensed steam. A jet of cold water may be applied to improve the
vacuum when necessary, and by this arrangement surface condenser is obtained
without valve or pump.
Dated this 14th day of April 1899
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Feed Water Heaters and Condensers.
We, JOHN JARDINE and WILLIAM JARDINE both of Windmillhill Street,
Motherwell, in the County of Lanark, Engineers, 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 :-
Our invention relates to improvements in feed water heaters and is especially
applicable to those using exhaust steam, and especially designed for rolling mill
engines and applicable to all classes of high pressure engines. Our object is to
construct an inexpensive and effective feed water heater in which the exhaust
steam is entirely separated from the feed water, and back pressure is quite obviated.
Referring to the accompanying sheet of drawings-
Figure 1 is a section of a heater constructed according to our invention.

page_text: Figure 2 is a transverse section through the intermediate chamber C.
Figure 3 is a section of one end of our heater at the chamber A showing a water
injecting arrangement.
In carrying our invention into effect we construct a cylindrical vessel a preferably
of iron or steel and arrange within it two tube plates respectively b and c through
which pass a large number of tubes D expanded at their ends into the said tube
plates or otherwise fastened in any convenient manner. End plates cover in the
chambers A B at each end of the said tubes D, and the exhaust steam from the
engine passes into one chamber B entering by E and the butterfly valve G, thence
through the tubes D to the second chamber A and escapes by the escape pipe K to
the atmosphere. The branch Fat the inlet end permits some steam to escape
regulated by the butterfly valve H so that the exhaust is not impeded more than is
necessary to pass the steam through the tubes D.
The feed water passes into a middle chamber C between the tube plates a band
is effectively heated by the exterior surfaces of the tubes D, after which it passes
by an outlet pipe to the boiler. M is the feed water inlet and N is the feed
water outlet.
A manhole and door are provided as shown at 000 to each of the external:
chambers and also to the feed water chamber. A blow off cock is attached to the
feed water chamber and connections I are made to drain off the condensed steam.
Plugs are provided in the tube plates at suitable positions to allow deposit to be
cleaned away from the tubes.
By our invention any cylindrical vessel such as an old boiler may be inexpensively
converted into a feed water heater.
Our improved feed water heater may be adapted as a surface condenser as shown
at Figure 3 and by giving the condensed steam water pipe a fall of not less than
30 feet we may dispense entirely with the use of an air pump. We sometimes
inject cold water at the nozzle L for this purpose. A syphon may be adopted also
to discharge the condensed steam. A jet of cold water may be applied to improve
the vacuum when necessary as shown, and by this arrangement surface condenser
is obtained without valve or pump.
Having now particularly described and ascertained the nature of our said inven.
tion, and in what manner the same is to be performed, we declare that what we
claim is:
1. The arrangement the construction of feed water heater herein before described,
reference being had to Figures 1 and 2 of the accompanying drawings.
2. The arrangement and construction of feed water heater hereinbefore described
reference being had to Figure 3 of the accompanying drawings.
Dated this 14th day of January 1893.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for the Applicants.