Year: 1898

page_text: Date of Application, 8th Mar., 1898-Accepted, 9th Apr., 1898
I, WILLIAM BURGELAND JOHNSON, of 4, Clayton Square, Liverpool, in the County
of Lancaster, Engineer, 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 accompanying drawing is a vertical section at right angles to the steam and
mud drums of a boiler according to my invention.
In the drawings, 2 represents the steam-drum belonging to my improved vertical
boiler, and 3 and 4 are banks or groups of tubes which extend downwardly there-
from and diverge somewhat from each other. At the lower end of these banks of
tubes are mud-drums 5 and 6. These drums are supported by the end walls of
the boiler setting and serve as a base to support the tubes and upper drum. 7 is a
wall or partition between the banks of tubes, terminating below the steam-drum so
as to constitute two flues 8 and 9 communicating with each other at their upper ends.
10 and 11 are walls on the outer sides of the banks of tubes, and 12 is an outlet flue
leading from the base of the flue 9.
The combustion-chamber 13 is situated beneath the drum 6 and is separated there-
from by an arch 14. This chamber therefore is built in or as a part of the boiler
structure proper, and I am enabled to economize greatly in space, the boiler being
as compact and taking up as little floor room as possible.
To permit this arrangement of the combustion-chamber, the drum 6 is set at
a higher level than the drum 5. These two drums are connected by a circulating
pipe or pipes 15, which may be embedded in the side walls of boiler setting, or
other arrangement of circulating pipes may be employed.
In the operation of the boiler, the flame and products of combustion from the
chamber 13 rise in the flue 8 through the tubes 4 and finally escape through the
flue 12.
The advantages of the boiler are its compactness, cheapness and high efficiency.
The boiler also when supported by the drums at its base is free to expand or con-
tract safely; and the construction affords facility for convenient enlargement by
lengthening the drums and correspondingly widening the banks of tubes.
Within the scope of my invention as defined in the claims, modifications may be
made in the form and construction of the parts. For example as far as the
arrangement of the combustion chamber is concerned, I intend to claim it
irrespective of the precise construction of the steam-drum, and whether the steam-
drum be a single drum or divided into two drums. A supplemental bank of tubes
may be placed in the flue 12. The arrangement of the flue walls may also be
changed as desired.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what the same is to be performed, I declare that what
I claim is:-
1. An upright boiler having upper and lower drums, banks of upright tubes
connecting the same, a combustion chamber under one of the said lower drums, and
an arch or partition between the combustion-chamber and the flue to which said
drum pertains.
2. An upright boiler having banks of tubes, and lower drums, one lower drum
being at a higher level than the other, a combustion chamber under the higher
of said drums discharging among the tubes of the bank pertaining to the other
drum, a wall or partition between the banks of tubes pertaining to the said lower
drums respectively, and a partition adapted to direct the heating gases primarily
to and among the bank of tubes pertaining to the lower of said drums.
3. An upright boiler having banks of tubes and lower drums, individual flues
in which the banks are situate, and a combustion-chamber under one of the drums
discharging into the flue containing the tubes pertaining to the other drum, the
drum over the combustion chamber being elevated above the other drum.
4. An upright boiler having flues 8, 9, banks of tubes 3, 4, situate therein, mud
drums 5, 6, at their lower ends, the drum 6 being at a higher level, a combustion-
chamber situate below the drum 6 and discharging into the flue 8, and an outlet
flue leading from the base of the flue 6.
Dated this Savonth dow of Morch 1898