AN IMPROVED CONDENSER FOR STEAM ENGINES
Year: 1878

page_text: LETTERS PATENT to Frank James Wilson Packman, of Ringwood, in the
County of Hants, M.D., for the Invention of "AN IMPROVED CONDENSER FOR
STEAM ENGINES."
Sealed the 14th March 1879, and dated the 19th September 1878.
PROVISIONAL SPECIFICATION left by the said Frank James Wilson
Packman at the Office of the Commissioners of Patents on the 19th
September 1878.
FRANK JAMES WILSON PACKMAN, of Ringwood, in the County of Hants, M.D.
"AN IMPROVED CONDENSER FOR STEAM ENGINES."
The object of this improved condenser is to condense the exhaust steam by means-
of air instead of water.
It is accomplished by exposing the surfaces of thin metallic chambers to a
draught of air, produced by the heat of the exhaust and furnace combined.
It consists of a central cylinder surrounded by a series of sheet copper or brass
ring chambers with air spaces between them, and having an outside casing for
waste water supply.
The exhaust enters the cylinder by a pipe, becomes expanded, lowered in
temperature and pressure, and partially condensed by air outside and a water
heater within, which passes through its centre. The remainder is conveyed by:
pipes to the ring chambers and condensed. The distilled water flows through pipes
to the pump, which forces it through the heater into the boiler again. Waste water
is supplied to the pump by tap and pipe, as leakage, &c., may require.
An air tube connects the water pipe with the furnace, prevents undue pressure
on the condenser from the exhaust inside and the atmosphere out, and serves to
convey any uncondensed vapour into the furnace, where it becomes invisible.
The use of a central ring boiler and cooler, as specified in my Patent of July 20th,
1875, No. 2574, is avoided, and thereby this new condenser is rendered more
simple in construction, lighter, cheaper, and more effective for the condensation of
exhaust steam.

page_text: !
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Frank James Wilson Packman in the Great Seal Patent Office
on the 19th March 1879.
FRANK JAMES WILSON PACKMAN, of Ringwood, in the County of Hants, M.D.
"AN IMPROVED CONDENSER FOR STEAM ENGINES."
This Invention has for its object an improved condenser for steam engines, by
means whereof the exhaust steam is condensed by air instead of water.
This I accomplish by exposing the surfaces of thin metallic chambers to a
draft of air, which is provided by the heat of the exhaust and furnace combined.
And in order that my said Invention may be better understood and readily
carried into effect, I will now with the aid of the accompanying Drawings,
whereon similar letters of reference indicate corresponding parts, proceed more
particularly to describe and ascertain the same.
Figure 1 of such Drawings represents a plan view, and Figure 2, a vertical
section of my improved steam condenser. Such condenser consists of a central
cylinder a surrounded by a series of sheet copper or brass ring chambers 6 with
suitable air spaces c between them, and having an outside casing d for the waste
water supply.
The exhaust enters the cylinder a at the aperture k by a pipe e where it
becomes expanded, lowered in temperature and pressure, and partially condensed
by air outside and a water heater within, which water heater passes through its
centre. The remainder of the exhaust is conveyed by means of suitable pipes to
the ring chambers b, where it is condensed.
The distilled water flows through suitable pipes to the pump, which forces it
through the water heater into the boiler again.
Waste water is supplied to such pump by means of a tap and pipe, as leakage
or other exigencies may require.
An air tube g connects the water pipe with the furnace, so as to prevent undue
pressure on the condenser as well from the exhaust inside as from the atmosphere
without, and such tube serves to convey any uncondensed vapour into the furnace
where it becomes invisible.
By my improved condenser above described the use of a central ring boiler
and cooler as specified in my Patent of 20th July 1875, No. 2574, is dispensed
with, thus rendering such improved condenser not only much more simple in
construction, but also lighter, cheaper, and more effective for the condensation of.;
exhaust steam.
Having thus particularly described and ascertained the nature of my said
Invention and the manner of carrying the same into effect, I would have it under-
stood that what I claim and desire to secure by the herein-before in part recited
Letters Patent is, the manufacture and use of an improved atmospheric steam
condenser, substantially in the manner and for the purposes herein-before described
and illustrated.
In witness whereof, I, the said Frank James Wilson Packman, have here-
unto set my hand and seal, this Third day of March, in the year of our
Lord One thousand sight hundred and seventy ning
FRANK JAMES WILSON PACKMAN, M.D., (L.S.)
Sydney House,
Ringwood,
Hants.