IMPROVEMENTS IN WATER TUBE BOILERS
Year: 1879

page_text: LETTERS PATENT to Georg Friedrich Udelhoven, of Kalk, near Cologne, in
the Empire of Germany; for the Invention of "IMPROVEMENTS IN WATER
TUBE BOILERS!"
Sealed the 29th July 1879, and dated the 12th February 1879.
PROVISIONAL SPECIFICATION left by the said Georg Friedrich Udelhoven
at the Office of the Commissioners of Patents on the 12th February 1879.
GEORG FRIEDRICH UDELHOVEN, of Kalk, near Cologne, in the Empire of
Germany. "IMPROVEMENTS IN WATER TUBE BOILERS."
According to this Invention I make up a steam boiler of vertical tubes united at
top and bottom by means of spherical heads with feather and groove joints and
with internal brass or other screwed ferrules. The upper heads have square parts
or flanges below forming a ceiling as it were for the fire box or main flue in among
the tubes. Between the lower lieads of the tubes there are spaces for the gases and
ashes to pass downwards through them. The heads have all covers to take off for
cleaning the tube inside.
Above the boiler proper there is a steam collector connected by tubes.
The boiler rests on a plate under the upper square bottoined heads, and built in
the surrounding brickwork. Below, it rests on a hollow column in the bottom
flue.
The feed water is by preference led to a feed water heater in a flue connected with
the flue to the chimney. The feed pipe therefrom leads to the lower heads which
also have a blow off pipe and cock opposite thereto.
The grate may be supplied with fuel from a hopper in front provided with a
narrow air admission flue exposed to the heat of the furnace.
The products of combustion pass from the grate over a bridge in among the tubes
down between their bottom heads and under the same, then by preference up again
into a side flue containing the feed water lieater; and then to the chimney flue.
Soot doors as well as an ashpit door under the boiler are provided.

page_text: According to this Invention I make up a steam boiler of vertical tubes united at
-top-and-bottom-by-means-of-spherical-heads-with-feather and-groove joints-and-with-
internal brass or other screwed ferrules.
The upper heads have square parts or flanges below; forming a ceiling as it were
for the fire box or main flue in among the tubes. Between the lower heads of the
tubes there are spaces for the gases and ashes to pass downwards through them.
The heads have all covers to take off for cleaning the tubes inside.
Above the boiler proper there is a steam collector connected by tubes.
The boiler rests on a plate under the upper square bottomed heads and built in
the surrounding brick work. Below, it rests on a hollow column in the bottom
flue.
The feed water is by preference led to a feed water heater in a flue connected with
the flue to the chimney. The feed pipe therefrom leads to the lower heads which
also have a blow-off pipe and cock opposite thereto.
The grate may be supplied with fuel from a hopper in front provided with a
narrow air admission flue exposed to the heat of the furnace.
The products of combustion pass from the grate over a bridge in among the tubes,
down between their bottom heads and under the same, then by preference up again
into a side flue containing the feed water heater, and then to the chimney flue.
Soot doors as well as an ashpit door under the boiler are provided.
And in order that this my Invention may be more fully understood I will now
describe the same with reference to the accompanying Drawing, of which Figure 1
is a vertical longitudinal section; Figure 2, a vertical transverse section; and
Figure 3, a plan section of a steam boiler constructed according to this Invention.
a, a, are vertical water tubes, and b and c are spherical top and bottom heads
respectively for connecting them together. These heads are united with each other
by means of feather and groove joints and by internal brass or other screwed
ferrules d. The upper heads b have square flanges which together form a top or
ceiling for the fire box or main flue of the boiler and rests on the plates i built into
the surrounding brickwork. The spaces between the lower heads e serve for the
products of combustion, that is, gases and ashes from the space p over the bridge, to
pass down into the lower space 7, the gases then rise into the flue m and pass off to
the chimney by the flue r. All the heads b and c have covers e for cleaning. f is a
steain collector which by tubes g and h is connected to the upper part of the boiler
-proper;-k.is.a.hollow-column-below_the_boiler which in connection with the plates_i_
serves to carry the weight of the boiler and also for collecting the mud or other
sediment which may be withdrawn by a mud hole door below.
The feed water from the feed pump enters the feed water heater in the flue m,
and thence enters the boiler by the pipe n. o is a blow off pipe opposite thereto.
8 and t, Figures 1 and 2, are soot doors for cleaning the outside of the boiler tubes
and the flue or fire box wherein they are placed; n is a door for entering below the
boiler.
The fire place and fuel hopper with air flue exposed to the heat may be of the
form shown.
And having thus described and ascertained the nature of this Invention I declare
that I do not lay any claim generally to vertical water tubes connected by casting
or otherwise at top and bottom by cast iron heads, but I claim,―
Firstly. The form and mode of connection with one another of the hollow spherical
heads b and c, substantially as described and shown, and

page_text: Secondly. The combination of vertical tubes a, spherical top and bottom heads b
and c, and hollow supporting column k, the products of combustion passing down
between the lower heads c, all substantially as described and shown.
Thirdly. The combination of water tube boiler, fire place, and flues, as shown on
the Drawings.
In witness whereof, I, the said Georg Friedrich Udelhoven, have hereunto
set my hand and seal, this Seventh day of August, in the year of our Lord
One thousand eight hundred and seventy nine.
G. F. UDELHOVEN. (L.S.)