Improvements in Steam Boilers.
Year: 1894

page_text: Date of Application, 4th Sept., 1894-Accepted, 13th Oct., 1894
COMPLETE SPECIFICATION.
Improvements in Steam Boilers.
I, HENRY GRIFFITH KEASBEY, of Ambler, in the County of Montgomery,
State of Pennsylvania, United States of America, Physician, 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 :-
My invention consists of a steam boiler having a feed water heating device, so
combined therewith that the latter serves both to assist the circulation and to
gradually heat the water, while it is being converted into steam, the same being
formed with separate chambers, which are in communication in such a manner that
the water is caused to traverse the boiler alternately from top to bottom, throughout
the chambers in zig-zag order, whereby it is, subjected to the action of the heating
flues, which extend continuously in an unbroken line from end to end of said boiler
through said chambers and partitions, and steam is rapidly and effectively generated
and also superheated, all as will be hereinafter set forth.
In the accompanying drawing
Figure 1 represents a longitudinal section of a steam boiler embodying my
invention.
Figure 2 represents a side elevation of a portion of a modification.
Figure 3 represents a longitudinal section of a portion of a modification, and
Figure 4 represents a side elevation of a portion of a modification.
Similar letters of reference iudicate corresponding parts in the several figures.
A designates a steam boiler, and B designates the flues therein for the passage
of the products of combustion.
Within the boiler are partitions or diaphragms C, which divide the boiler into
chambers D, D', D2, D³, it being noticed that the flues B pass through said
partitions and chambers.
Connected within the partitions, at or near the upper ends thereof, are
pipes E, E¹, E2 which extend downwardly therefrom, and open into the chambers
which they occupy at or near the bottoms of the same, thus forming a communi-
cation between the chambers, and a zig-zag passage for the water throughout the
boiler.
The boiler A and partitions C are provided with manhole openings and plates F
for admission to the chambers for repairs, and cleansing the boiler A, and pipes G
for blowing-out deposits or sediment, and emptying purposes.
S designates the fire box of the boiler, the steam space of which being over the
crown sheet, whereby the steam is finally generated in the hottest portion of the
boiler.
The operation is as follows:-
Water is directed by the feed pipe H into the chamber D of the boiler, and
rising therein reaches the opening leading to the pipe E, so that the water enters
said pipe and is directed by the same to the bottom of the chamber D¹ where it is
discharged. It then rises in said chamber D' and reaches the pipe E', by which
it is discharged at the bottom of the chamber D, and thus the operation continues
through said chamber D³, the pipe E and chamber D³, it being noticed that while
the water may be admitted into the boiler in a cold or cool condition, it is subjected
to increased heat as it approaches the furnace, and as it traverses the boiler in a
zig-zag course, or alternately from bottom to top and top to bottom, it is subjected
to increased heating surfaces presented by the flues which it passes, so that steam
will be effectively and rapidly generated, the same entering the steam space J and
steam dome K

page_text: In Figure 2, I show pipes L, which are located on the outside of the boiler, and
communicate with the top of one chamber and bottom of the adjacent chamber, as
at M and N.
In Figure 3, I show a pipe P, which is located within one of the chambers of
the boiler, and passed through the shell of the boiler, where it is connected outside
of the same by a pipe Q with the adjacent chamber, the operation however being
the same as in Figure 1.
In Figure 4 I show an upright boiler which is divided into horizontal chambers,
and provided with pipes R, whereby the water enters the bottom of the upper
chamber, discharges at the top of the same into a pipe which enters the next chamber
below, at the bottom thereof, and so on throughout the other chambers, so that the
course of the water is zig-zag or alternately from bottom to top and top to bottom
throughout the different chambers, the effect being the same as in the previous
cases.
Having now particularly described, and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1st. A steam boiler having partitions therein forming separate chambers, flues
extending continuously in unbroken line from end to end of said boiler, through
said chambers and partitions, and pipes connected with said partitions, exteriorly
of the boiler, forming communications between the said chambers in zig-zag order,
the water being introduced into a chamber remote from the fire box, and the
steam chamber being over the fire box, said parts being combined substantially as
described.
2nd. A steam boiler having partitions therein, forming separate chambers, flues
extending continuously in unbroken line from end to end of said boiler through
said chambers and partitions, pipes connecting with said partitions exteriorly of
the boiler, forming communications between the chambers, said pipes extending
alternately from bottom to top and top to bottom of said chambers, a fire box and
a steam dome, said parts being combined substantially as described.
3rd. A steam boiler provided with a fire box, flues leading therefrom and
extending continuously in unbroken line from end to end of said boiler, partitions
in said boiler forming chambers and connections between said chambers, exterior of
the boiler for directing the water through the same alternately from bottom to top
and top to bottom, and a steam dome located at the fire box end of the boiler, said
parts being combined substantially as described.
Dated this 4th day of September 1894.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.