An ImprOVED CONDENSER FOR STEAM Engines.
Year: 1875

page_text: LETTERS PATENT to Frank James Wilson Packman, of Ringwood,
in the County of Hants, Doctor of Medicine, for the Invention
of« An ImprOVED CONDENSER FOR STEAM Engines.'
of "AN IMPROVED CONDENSER FOR STEAM ENGINES.'
"
Sealed the 18th January 1876, and dated the 20th July 1875.
PROVISIONAL SPECIFICATION left by the said Frank James Wilson
Packman at the Office of the Commissioners of Patents, with his
Petition, on the 20th July 1875
I, FRANK JAMES WILSON PACKMAN, of Ringwood, in the County of
Hants, Doctor of Medicine, do hereby declare the nature of the said
Invention for "AN IMPROVED CONDENSER FOR STEAM ENGINES," to be as
follows:
-
The object of this improved condenser is to condense all the exhaust
steam without cold water, and to utilise the heat thereof in supplying
the boiler with boiling water and the furnace with hot air, thereby
saving fuel and preventing priming and incrustation
I propose accomplising the above as follows:-A pipe transmits the
exhaust steam from the engine into the centre of and around a separate

page_text: ring boiler enclosed in a metallic case, and containing the distilled
water it receives through a pipe from the pump. The heat of the exhaust
maintains the water at the boiling temperature, and the main boiler
being connected with the ring boiler by a pipe is thus supplied with
boiling water. The exhaust then passes through a pipe or flue from the
ring boiler case to a chamber or chambers, or partitions made of metallic
plates in any suitable form and size, wherein it is condensed by air
passing over their outer surfaces towards the furnace, whereby the heat
thereof is economized in supplying the fire with hot air.
The water of condensation and any uncondensed vapour pass through
a pipe or channel to a "cooler," which consists of an inverted metallic
vessel having a cup or depression on its surface that receives the water
through a branch pipe dipping into it, and from whence it flows over
the said vessel into a receiver, beneath which is connected with the
pump by a pipe; the vapour is prevented escaping by the water in the
cup and enters the cooler through a prolongation of the water pipe;
thereby condensation of all the oxhaust steam is effected and its heat
utilised."
66
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Frank James Wilson Packman in the Great Scal
Patent Office on the 18th January 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FRANK
JAMES WILSON PACKMAN, of Ringwood, in the County of Hants, Doctor
of Medicine, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twentieth day of July, in the year
of our Lord One thousand eight hundred and seventy-five, in the
thirty-ninth year of Her reign, did, for Herself, Ier heirs and suc-
cessors, give and grant unto me, the said Frank James Wilson Packman,
Her special license that I, the said Frank James Wilson Packman,
my exccutors, administrators, and assigns, or such others as I, the said
Frank James Wilson Packman, my executors, administrators, and
assigns, should at any time agree with, and no others, from time to
time and at all times thereafter during the term therein expressed,
should and lawfully might makc, usc, cxcrcise, and vend, within the

page_text: United Kingdom of Great Britain and Ireland, the Channel Islands,
and Isle of Man, an Invention for "AN IMPROVED CONDENSER FOR STEAM
ENGINES," upon the condition (amongst others) that I, the said Frank
James Wilson Packman, my executors or administrators, by an instru-
ment in writing under my, or their, or one of their hands and scals,
should particularly describe and ascertain the nature of the said Inven-
tion, and in what manner the same was to be performed, and cause the
same to be filed in the Great Scal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.
"
NOW KNOW YE, that I, the said Frank James Wilson Packman,
do hereby declare the nature of my said Invention, and in what
manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
The object of this improved condenser is to condense all the exhaust
steam without cold water, and to utilize the heat thereof in supplying
the boiler with boiling water and the furnace with hot air, thereby
saving fuel and preventing priming and incrustation.
I purpose accomplishing the above as follows, and as is represented
in the accompanying Drawings, Fig. 1, 2 and 3. A pipe A transmits
the exhaust steam from the engine into the centre of and around a
separate ring boiler B enclosed in a metallic case, and containing the
distilled water which it receives through a pipe C from the pump The
heat of the exhaust steam maintains the water at the boiling tem-
perature, and the main boiler being connected with the ring boiler by a
pipe D, is thereby supplied with boiling water. The exhaust steam then
passes through a pipe or flue E from the ring boiler case to a chamber
or chambers, or partitions F made of slim metallic plates in any suitable
form and size, wherem it is condensed by air passing over their outer
surfaces towards the furnace G, whereby the heat thereof is economised
in supplying the fire with hot air.
The water of condensation and any uncondensed vapour pass through
a pipe or channel H to a cooler I, which consists of an inverted
metallic vessel having a cup or depression on its surface that receives
the water through a branch pipe dipping into it, and from whence it
flows over the said vessel into a receiver beneath, which is connected
with the pump by a pipe The vapour is prevented from escaping by
the water in the cup and enters the cooler through a prolongation of the

page_text: pressure of steam per ". The loss of water per hour caused by
leakage, safety valve, and evaporation, under 7 lbs. per" boiler pressure
need not exceed of that converted into steam. The saving in fuel by
this condenser has reached 38 per cent. per hour, more than without it.
Having thus described the nature of the said Invention and tho
manner of carrying it into effect, I would have it understood that I do
not confine myself to the precise details above enumerated, as these may
be obviously modified without departing from the principle of the
Invention, according to the special construction and intended appli-
cations of the engines in which it is adopted; but what I claim is
the condensation of the exhaust steam by means of a ring boiler in
combination with a series of steam chambers constructed substantially
as above described and represented in the accompanying Drawings.
In witness whereof, I, the said Frank James Wilson Packman,
havo hereto set my hand and seal, this Fourteenth day of
January, in the year of our Lord One thousand eight hundred
and seventy-six.
FRANK JAMES WILSON PACKMAN, M.D. (L s.)