IMPROVE- MENTS IN APPARATUS IN CONNECTION WITH STEAM-BOILER FLUES OR FURNACES FOR REHEATING EXHAUST-STEAM SUPERHEATING LIVE-STEAM AND HEATING AIR FOR HEATING DRYING OR LIKE PURPOSES
Year: 1883

page_text: :
LETTERS PATENT to Edward Gardner Colton of Victoria Chambers Chancery
Lane in the county of Middlesex Patent Agent for an Invention of IMPROVE-
MENTS IN APPARATUS IN CONNECTION WITH STEAM-BOILER FLUES OR
FURNACES FOR REHEATING EXHAUST-STEAM SUPERHEATING LIVE-STEAM AND
HEATING AIR FOR HEATING DRYING OR LIKE PURPOSES" communicated to
him from abroad by Levi Hussey and George William Donaldson both of the
City County and State of New York United States of America
PROVISIONAL SPECIFICATION left by the said Edward Gardner Colton at
the Office of the Commissioners of Patents on the 26th April 1883.
EDWARD GARDNER COLTON of Victoria Chambers Chancery Lane in the county
of Middlesex Patent Agent "IMPROVEMENTS IN APPARATUS IN CONNECTION WITH
STEAM BOILER FLUES OR FURNACES FOR REHEATING EXHAUST-STEAM SUPER-
HEATING LIVE-STEAM AND HEATING AIR FOR HEATING DRYING OR LIKE
PURPOSES" (a communication to me from abroad by Levi Hussey and George
William Donaldson both of the City County and State of New York United
States of America)
This invention has reference to an improved apparatus for reheating and utilizing
exhaust-steam and for superheating live-steam or heating air when the steam engine
supplying the exhaust steam is not running which apparatus or heating device is
arranged in connection with the furnace of the steam generating boiler so that
thereby a uniform degree of heat can be supplied to drying-rooms, feed water
heaters or other heating appliances during the day or night by the better utilization
of the products of combustion of the steam boiler furnace at a considerable saving
in fuel
The invention consists in the combination with a steam boiler of an exhaust-
steam heating, live-steam superheating or air-heating device located above the

page_text: .
boiler within a flue through which the products of combustion pass, the said
heating device being connected with the valved exhaust pipe of the steam engine
with a valved live-steam pipe and with a valved air pipe whereby it may be
readily converted from an exhaust-steam re-heater to a live-steam superheater or
to an air-heater, the heating device being also connected by valved conducting
pipes to the radiators or other appliances for utilizing the reheated exhaust-steam,
superheated live-steam or heated air.
The products of combustion pass through a flue or flues into a suitable chamber
or flue preferably above the boiler in which is placed a coil or series of pipes for
reheating the exhaust-steam, superheating live-steam or for heating air, or a
chamber into which the steam or air is admitted and traversed by pipes or flues
for the products of combustion, might be used.
This coil series or chamber is connected at its lower end to the main exhaust
pipe by a valved pipe and at the upper end connected to the main exhaust pipe by
another valved pipe, a pipe with a relief valve being placed on this latter pipe to
relieve abnormal pressure.
Between the junction of these pipes with the main exhaust pipe is placed a
valve on such exhaust pipe.
A valved pipe for conveying live steam from the boiler is connected to the first
named valved pipe leading from the heating ooil series or. chamber for the purpose
of superheating the live-steam for heating or other purposes.
A valved air-induction pipe communicates from the atmosphere through the
furnace flue or walls with the lower end of the heating coil series or chamber and
a valved air eduction pipe communicates from the upper end of the heating coil
'series or chamber with stoves, air pipes or other devices for heating rooms or
buildings or supplying heated air for other purposes.
.
The main exhaust pipe above the valves communicates with radiators feed water
heaters, drying rooms or for other purposes where exhaust steam is utilized.
Suitable valved flues conduct the products of combustion after passing through
the chamber Blue or flues containing the heating device to the chimney
$
Thus by suitably manipulating the valves, the exhaust-steam can be reheated or
live-steam be superheated or air be heated by the one combined apparatus by the
products of combustion escaping from the furnace flues.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Edward Gardner Colton in the Great Seal Patent Office on the
25th October 1883.
'
EDWARD GARDNER COLTON of Victoria Chambers Chancery Lane in the county
of Middlesex Patent Agent. IMPROVEMENTS IN APPARATUS IN CONNECTION WITH
STEAM BOILER FLUES OR FURNACES FOR REHEATING EXHAUST STEAM SUPER-
HEATING LIVE STEAM AND HEATING AIR FOR HEATING DRYING OR OTHER
PURPOSES (a communication to me from abroad by Levi Hussey and George
William Donaldson of the City, County and State of New York United States of
America.)
.
This invention has reference to an improved apparatus for reheating and
utilizing exhaust-steam and for superheating live steam or heating air, when the
steam engine supplying the exhaust steam is not running, which apparatus or
heating device is arranged in connection with the furnace of the steam generating
boiler, so that thereby a uniform degree of heat can be supplied to drying-rooms,
feed water heaters or other heating appliances, during the day or night by the
better utilization of the products of combustion of the steam boiler furnace at a
considerable saving in fuel. The invention consists in the combination with a
steam boiler, of an exhaust-steam heating, live-steam superheating or air beating
device, located above the boiler within a flue through which the products of
combustion pass the said heating device being connected with the valved exhaust
pipe of the steam engine with a valved live steam pipe and with a valved air
pipe, whereby it may be readily converted from an exhaust steam reheater to a
live steam superheater, or to an air heater, the heating device being also connected
by valved conducting pipes to the radiators or other heating appliances for
utilising the reheated exhaust-steam, superheated live steam, or heated air, as will
more fully appear hereinafter and finally be pointed out in the claims. In the
accompanying drawings Figs. 1 and 2 represent vertical longitudinal sections of
two different forms of our improved apparatus for reheating exhaust steam, super-
heating live-steam and heating air, and Fig 3 is a vertical transverse section through
the system of heating pipes. Similar letters of reference indicate corresponding parts.
Referring to the drawings A represents a steam boiler of any approved construction,
B the brickwork by which the same is supported, and C the furnace of the boiler.
The products of combustion are conducted from the furnace C along the bottom
and sides of the boiler to the rear end of the same, thence forward through the
tubular flues of the boiler to a vertical flue G at the front end thereof, thence into
a top chamber D, containing a system or coil of heating pipes E which are
supported therein in any suitable manner and thence through the valved flue H
or H2 to the chimney. A main exhaust pipe F leading from the steam engine, is
provided with a valve 8 and connected with the radiators, feed water heaters or
other devices for utilizing the exhaust steam. A branch exhaust pipe F' connects
the main exhaust pipe below the valve s with the lower end of the heating pipes E,
and a pipe I connects the upper end of said pipes with said main exhaust pipe
above said valve 8. The brauch exhaust pipe F¹ is provided with a valve f and
the connecting pipe I is provided with a valve t. By closing the valve 8 of the
main exhaust pipe and opening the valve f of the branch exhaust pipe, the exhaust
steam will pass to and through the heating pipes E where it will become reheated,
and thence through the connecting pipe I back to the main exhaust pipe or other
8

page_text: pipe connected with the radiators, feed water heaters or other device for utilizing
the said steam. When the brickwork surrounding the system of heating pipes E
or chamber E' is properly heated by the fire of the furnace C, the heat absorbed
by the brick walls is radiated and employed, in connection with the direct heat of
the products of combustion that are drawn around the system of pipes E, or
through the chamber E', for reheating the exhaust steam to a considerably higher
temperature, the same being then conducted off through the valved pipe I
connected to the upper end of the heating pipes E or chamber E¹ for being used
for heating up drying-rooms and for other purposes. The pipe I that conducts off
the reheated steam, is provided with an outlet pipe F having a pressure relief
valve F, so as to regulate the pressure in the system of heating pipes and admit
automatically the escape of steam of higher pressure. Instead of locating the flue
or chamber D immediately above the boiler, the vertical flue G may be extended
and instead of having a single flue D through which the gaseous products of
combustion pass and a series of small pipes E through which the exhaust steam
passes, there may be a series of small flues D' inclosed in a chamber E³, as shewn
in Figs. 2 and 3 in which case the products of combustion may pass from the
vertical flue G to the exhaust-flue through the small flues D¹, while the exhaust
steam passes through said chamber E¹ in contact with the outside of said pipes.
The system of heating pipes E or chamber E' is further connected by a valved
pipe g with a dome A³ or with any other suitable part of the steam boiler A, sO
that live steam may be made to pass through the system of heating pipes E,
whenever the engine is stopped, either during the day or at night. In
this case the stop-cock f of the branch exhaust-pipe F¹ is closed and the
valve of the live steam pipe g opened. The system of heating pipes E
acts then as a superheater of the live-steam and admits the lowering of
the steam pressure in the boiler to a very low point, say five pounds,
thus ensuring greater safety, and a considerably smaller consumption of fuel, as
the steam is superheated in passing through the system of pipes without extra cost
by the heat of the products of combustion and the heat radiated by the brick walls.
As the apparatus described is only capable for use as long as either exhaust
steam or live steam is supplied to the system of heating pipes, while sometimes it
is preferable for economy's sake to dispense with the use of steam during the night,
when the engine is not running, so that a certain amount of heat can be supplied
to the different rooms of the building to be heated, a valved air-induction pipe L
is arranged which extends from the lower end of the system of heating pipes E
through the furnace-walls to the out-side, so as to communicate with the
atmosphere. An air eduction pipe L' leads from the opposite and upper end of the
heating pipes E to suitable registers in different parts of the building to be heated.
The valve f of the branch exhaust pipe F' has to be closed when the steam engine
has been stopped for the night. Owing to the heat radiated by the banked tires
of the boiler and by the walls of the chamber E¹ the heating device E is kept at a
high degree of temperature during the night, so that the air that is drawn in is
heated up in its passage through the pipes E, so as to furnish thereby a continuous
supply of heated air to the interior of the building. By this arrangement drying
roons or other heating appliances may be heated during the day by means of the
reheated exhaust steam from the engine, to which a high temperature is imparted
by the heat of the products of combustion on their passage from the boiler furnace
to the chimney, or when the engine is stopped during the day, or at night, by
means of superheated live steam, supplied from the boiler, and for some purposes
and especially at night, by the air that is drawn in and heated in its passage
through the heating pipes. A building may thus be economically and effectually
heated during the day and night, while all the advantages obtained by carrying
steam at a high pressure are secured for heating purposes without any danger and
without any extra expense for fuel simply by the heat that would otherwise pass
unutilized through the chimney.
:

page_text: Having thus described the said invention I claim as new and desire to secure by
Letters Patent :-
1. The combination with a steam boiler, of a flue or flues above the boiler, a
heating device within or around said flue or flues, a valved exhaust steam pipe,
a pipe connecting said exhaust steam pipe with the reheating device, a valved
live steam pipe connecting the reheating device with the steam boiler, and a
pipe that conducts the reheated exhaust steam or the super-heated live steam
from said heating device to the place of use, substantially as described.
2. The combination, of a steam-boiler, a draft flue or flues above the boiler, an
exhaust-steam reheating device within or around said flue or flues, a valved
exhaust steam pipe leading from the engine to the reheating device, and a
conducting pipe that connects the opposite end of the beating device to the place of
use, and is provided with a pressure relief valve and discharge pipe, substantially
as set forth.
3. The combination, of a steam-boiler, a flue or flues above the boiler, an exhaust-
steam reheating device within or around said flue or flues, a valved air-induction
pipe connected to the lower part of the heating device and a valved eduction pipe
connected to the upper part of the opposite end of the same, substantially as set
forth.
4. The combination, of a steam boiler furnace, with a flue or flues above the
boiler, an exhaust steam reheating device within or around said flue or flues, a
valved exhaust-steam pipe connected to one end of the reheating device, a valved
live steam pipe connecting the reheating device with the steam boiler, a pipe that
conducts the reheated exhaust-steam or superheated live steam from said reheating
device to the place of use and valved air-induction and eduction pipes connected
to opposite ends of the reheating device substantially as set forth
In witness whereof, I, the said Edward Gardner Colton, have hereunto set
my hand and seal, this tenth day of October, in the year of our Lord One
thousand eight hundred and eighty three.
TR
מומA
GOLAN