IMPROVEMENTS IN CONDENSERS FOR MARINE AND OTHER STEAM ENGINES."
Year: 1876

page_text: LETTERS PATENT to Charles Mace, of Barcelona, in the Kingdom of Spain,
for the Invention of "IMPROVEMENTS IN CONDENSERS FOR MARINE AND
OTHER STEAM ENGINES."
PROVISIONAL SPECIFICATION left by the said Charles Mace at the Office
of the Commissioners of Patents on the 26th January 1876.
CHARLES MACE, of Barcelona, in the Kingdom of Spain.
DENSERS FOR MARINE AND OTHER STEAM ENGINES."
IMPROVEMENTS IN CON-
This Invention has mainly for its object to enable the steam boilers of marine steam
engines to be supplied with feed water at a high temperature, and containing but
little saline matter without the inconveniences arising from the use of tubular surface
condensers. For this purpose the exhaust steam pipe A from the engines is led
into a small chamber B at the upper part of an injection condenser, as shown in the
Drawings hereunto annexed. As the steam enters this chamber it meets with a
forced injection from the end of the pipe C, the amount of water injected being so
controlled that by condensing the steam a sufficient supply of feed water at a
maximum temperature is obtained for feeding the boilers. The water descends to
the chamber Dentirely separated from the main or principal condenser, except by the
openings t, t, for the escape of uncondensed steam to the air pump, and is pumped
from thence into a hot cistern E from which it is again pumped by the ordinary
force pump into the boilers. At the top of the hot cistern E is a discharge pipe and
escape valve loaded to one or more atmospheres. The steam which remains uncon-
densed by the forced injection from the pipe C escapes, as shown by the arrows from
the top of the chamber B, and passes downwards on the outside of the chamber to
the ordinary injection condenser F. This main condenser serves only to secure a
good vacuum; all water required for such condenser being discharged from it in the
ordinary way.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Mace in the Great Seal Patent Office on the 30th June
1876.
CHARLES MACE, of Barcelona, in the Kingdom of Spain.
CONDENSERS FOR MARINE AND OTHER STEAM ENGINES."
"IMPROVEMENTS IN
This Invention has mainly for its object to enable the steam boilers of marine
steam engines to be supplied with feed water at a high temperature, and containing
but little saline matter without the inconveniences arising from the use of tubular
surface condensers; this object I attain by the use of a compound condenser con-
structed as herein-after described. In this condenser a portion of the exhaust
steam is reduced by a forced injection in such quantity as to supply the necessary
amount of water for feeding the boiler or boilers, whilst the remainder of the
steam is condensed in an ordinary injection condenser. The water obtained in this
manner for feeding the boiler or boilers will be at a high temperature (about 135
degrees Fahrenheit), and will hold in solution less than 3 ounces of salt per gallon; it
will also be free from chemical impurities of a destructive nature, such as are found
to exist in water extracted from surface condensers. Steam boilers supplied with
comparatively pure feed water obtained as above described can be kept free from
salt by a very limited blowing out and there will also be an economy of fuel
obtained by the water being injected into the boiler at a high temperature.
The Drawings hereunto annexed shew a compound condenser constructed
according to my Invention.
Figure 1 is a vertical section of the condenser; Figures 2 and 3 are end cleva-
tions; and Figure 4, a plan view of the same.
In these Figures A is the exhaust steam pipe from the engines; it is led into a
small chamber B at the upper part of an injection condenser, as shewn. As the
steam enters this chamber it meets with a forced injection from the end of the
pipe C, the amount of water injected being so controlled that by condensing the
steam a sufficient supply of feed water at a maximum temperature is obtained
for feeding the boilers. The water descends to the chamber D entirely separated
from the main or principal condenser, except by the openings t, t, for the escape of
uncondensed steam to the air pump, and is pumped from thence into a hot cistern E,
from which it is again pumped by the ordinary force pump into the boilers.
the top of the hot cistern E is a discharge pipe and escape valve loaded to one or
more atmospheres. The steam which remains uncondensed by the forced injection
from the pipe C escapes, as shown by the arrows from the top of the chamber B,
and passes downwards on the outside of the chamber to the ordinary injection
condenser F. This main condenser serves only to secure a good vacuum; all water
required for such condenser being discharged from it in the ordinary way.
At
Having thus described the nature of my Invention and the manner of per-
forming the same, I would have it understood that I claim the combined arrange-
ment of condenser for marine and other steam engines, substantially as herein-
before described.
In witness whereof, I, the said Charles Mace, have hereunto set my hand
and seal, this Twentieth day of June, in the year of our Lord One thousand
CHARLES MACE. (L.S.)