Improvements in Steam Boilers.
Year: 1898

page_text: Date of Application, 24th Oct., 1898-Accepted, 23rd Dec., 1898
Improvements in Steam Boilers.
We, NELSON FILLMORE ANDERSON and WILLIAM THOMAS ANDERSON, both of Hardin
Calhouse, County of Illinois, United States of America, do hereby declare the
nature of this invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :—
The invention has relation to steam boilers of the water tube type; and the object
is to provide a boiler of this character, by means of which the steam may be rapidly
generated, the water tubes easily and quickly cleaned, and if damaged, easily
removed.
With this object in view, the invention consists in certain features of construction
and combination of parts hereinafter more fully described and claimed.
In the accompanying drawings:
Figure 1 is a perspective view of our improved boiler.
Figure 2 is a side elevation of the interior of one of the sections composing the
boiler.
Figure 3 is a cross-sectional view through both of the sections; and
Figure 4 is a detail sectional view through one of the water tubes and the shell
of the boiler.
In the drawings, 1 and 2 denote two sections of the boiler, each of which consists
of an inner and outer concentric parti-cylindrical shell a and b, having closed upper
and lower ends c and d respectively, and closed sides e. These sections are provided
with hinged lugs 3, that are connected by pintles 4, and on the opposite sides the
sections are formed with lugs 5, which are adapted to be secured together by bolts 6.
One of the sections is mounted on a suitable base 7 that contains the grate 8 of the
fire-pot, and the other section has a swinging movement across this base, and is
provided with a door 9 leading into the fire-pot. Each section is provided with
semi-circular rows of tapering water tubes that project inwardly from the sections
to a central point. These tubes are arranged in horizontal rows to form horizontal
spaces 10 and in vertical rows to form vertical spaces 11, whereby they may be more.
readily cleaned or scraped.
The tubes are preferably connected with the inner shells of the boiler by screw-
threads, whereby they may be easily removed and replaced by new ones, should
they become burnt or otherwise damaged. 12 denotes the smoke-stack, which is
preferably provided with a man-hole 13, through which a person may enter, and by
means of a suitably constructed device, clean the flues, without the necessity of
swinging the sections of the boiler apart. Should the tubes become damaged,
however, it will be necessary in order to repair them, to separate the sections.
14 denotes inlet pipes, which are connected to a T-union 15 by sleeves 16. The
T-union is connected to the ordinary feed water injector, not shown. 17 denotes
the outlet pipes, which are connected to a T 18 by sleeves 161. The brauch 19 of
the T may be connected to the conducting pipe, which is led to the point of
consumption of the steam.
In order to insure a uniform water level to both sections of the boiler, should,
through any fault of the steam injector, both sections of the boiler not be equally
supplied with water, we provide pipes 20, one having its free end provided with the

page_text: right-hand thread and the other with a left-hand thread, to receive the interiorly
right and left hand screw-threaded sleeve 21. It is therefore evident that, should
more water be pumped in one section than in the other, by this provision, the water
in one section will be conducted to the other section, thus maintaining a uniform
water level in both sections, and, consequently, uniform steam spaces. 22 denotes
the pet cocks having operating cords 23; 24 denotes the water gage; 25 the steam
gage; 26 the safety valve, and 27 the blow-off cock. These parts may be of the
usual or well known construction, and as they form no part of our invention, a
further description of the same is not deemed necessary.
The joints between the two sections and between the smoke stack and
sections may be packed with asbestos or any other suitable noncombustible
material.
In operation, the fuel being ignited in the fire-pot, the heat and products of
combustion will pass up between and around the radial water tubes, thoroughly,
heating the same and quickly generating steani.
The boiler is simple of construction, may be manufactured at small cost, and will
be found to be very desirable, inasmuch as it may be easily and quickly cleaned,
and very easily repaired.
Changes in the form, proportion, and the minor details of construction may be
resorted to without departing from the principle, or sacrificing any of the advantages
of 'this invention.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what wo
claim is
1. In a boiler of the character described, the combination of parti-cylindrical
hollow sections hinged together and provided with clusters of inwardly projecting
water tubes, and means for securing the sections together, substantially as set
forth.
2. In a boiler of the character described, the combination of parti-cylindrical
hollow sections hinged together and provided with inwardly projecting water tubes
arranged in parallel horizontal rows and parallel vertical rows, and means for
securing the sections together, substantially as described.
3.-In a boiler of the character described, the combination with the parti-
cylindrical hollow sections hinged together and provided with inwardly projecting
water tubes, and a tubular connection between the sections of said boiler, whereby
a uniform water level is obtained in both sections, substantially as set forth and for
the purpose described.
4. In a boiler of the character described, the combination with the parti-
cylindrical hollow sections hinged together, water tubes projecting inwardly from
said sections and having screw-threaded engagement therewith, said tubes arranged
in horizontal rows and in vertical rows, and means for securing the sections
together, substantially as set forth.
Dated thig 24th day of Databax 1900
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, Agents.