Improvements in connection with Locomotive and other Boiler Furnaces.
Year: 1893

page_text: Date of Application (in United Kingdom), 24th Nov., 1893
Complete Specification Left, 24th Nov., 1893-Accepted, 24th Feb., 1894
COMPLETE SPECIFICATION.
Improvements in connection with Locomotive and other Boiler
Furnaces.
I, ALBERT FRANKLIN KINGSLEY of No. 803 H. Street in the City of
Washington in the District of Columbia, United States of America, Merchant 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 object of this invention is to effect in boiler furnaces perfect combustion
of the fuel and consequently the prevention of loss and inconveniences arising
from escaping unconsumed products of combustion.
The invention can be applied to boiler furnaces generally, but inasmuch as
it has been designed and adapted by me with special reference to the needs of
locomotive boiler furnaces, I shall describe it in connection therewith and with
reference to the accompanying drawings.
Figure 1 of which is a longitudinal vertical central section of so much of a
locomotive as is necessary to illustrate my invention.
The remaining figures illustrate on a larger scale the structural details of the
apparatus.
Figure 2 is a perspective view of the grating proper comprising the perforated
air conduits and their transverse supports.
Figure 3 is a longitudinal, vertical, central section of one of the air conduit
sections.
Figure 4 is an elevation of the left hand end of the same.
Figure 5 is a section on X-X Figure 3.
Figure 6 is a vertical longitudinal central section of one of the transverse
supports with the water bars beneath in cross section.
Figure 7 is a sectional plan, showing the arrangement (one of many which can be
used) for supplying the air conduits with air.
A are water bars or pipes of which (as seen in Figure 6) there are two, placed
one near each side wall of the fire box X and extending from a point slightly
below the flues to a point above the fire door x. They are placed one on each side
of the fire door; in a fire box thirty four inches wide, each bar may stand say
seven inches from the adjoining side of the fire box, the bars or pipes being usually
from two to two and one half inches in diameter. They open into and communicate
with the water space of the boiler at each end. Upon these water bars are placed
the fire clay supports B, which extend cross-wise of the bars by which they are
upheld. These supports have on top, recesses b to receive the air conduits C, and
ribs b' to keep the latter separated from each other by proper intervals. These
supports B have in their undersides near each end a slight concavity 6' to enable
them to fit and take a proper bearing on the water bars A.
In order to obtain greater strength as well as to insure against accidental
breaking or fracturing of the transverse supports B under the load which they

page_text: .
carry, I prefer to make them tubular as seen at 63, and to introduce into their
bore a round metallic filling rod. This rod under the intense heat may burn
out more or less frequently but the manner in which the parts are constructed
and put together permits it to be readily renewed whenever required.
The fire clay air conduits are each made up of several sections C, which are
preferably of the form and proportions illustrated. Each section is tubular and has
perforations c in its opposite sides for the discharge of air; on the one end it has a
tenon c', and on the opposite end a socket c³, and the sections are put together end
to end to form a conduit, the tenon on the end of one fitting into the socket in the
adjoining end of the next; it also has at each end a shoulder c*.
The transverse supports B are placed at the ends of the conduits and at the
intermediate points where the sections which make up the several conduits meet,
the supports being broad enough to receive and support both of the two abutting
ends of the joining sections of each conduit. The recesses on the top of these
supports B are of a size to permit the conduits C to enter them; and the shoulders c
of each section enter between adjoining supports B, and extend down upon the
interior opposite faces of the latter, in this way spacing and holding the supports B
at proper intervals apart. The ribs on top of the supports B are in turn spacing
ribs which hold the conduits apart. In order to secure the best results adjoining
conduits should be separated from each other by a space of say about two and a
half inches wide.
In putting the grating in place, the supports B at the flue end of the fire box, is
placed on the water bars A resting against the flue head. In this way a fixed
starting point is obtained for the structure. The grating is then built up of the
sections C and cross supports B in the manner hereinbefore indicated, the two
interlocking with one another so that each serves to hold the other in place, while
at the same time the joints and connections between them are so loose as to permit
he free expansion and contraction of material.
The conduits at the end next to the fire door or front of the fire box should be
closed by plugs of fire clay or the like. Air is supplied to them by any suitable
means. The preferred arrangement is to take the air in from the front of the
locomotive through say two funnels D, each leading through the front of the smoke
box of the locomotive to the interior thereof where it connects to a Y or branchi
pipe d, from whose branches pipes d' extend across the smoke box to communicate
with four selected boiler flues. I take for this purpose four of the lowermost flues
which are as nearly as possible in the same horizontal plane, and on a level with
the open ends of the conduits C which adjoin the flue head. These flues should
project beyond the flue heads about an inch at each end, the one projecting and
entering the adjoining end of the appropriate conduits C, and the other joining its
supply pipe d at front. In this way I can use the boiler flues themselves as air
passages.
Under this arrangement by which air is taken in through funnels at front, the
supply of air is occasioned by and dependent upon the movement of the locomotive.
But manifestly if desired a special air pump operated from some moving part of the
engine can be used; or by introducing into the funnel a jet of steam or a jet of air
from the brake reservoir, the requisite air can be supplied continuously whether the
locomotive is in motion or at rest.
So far as concerns the interlocking sectional grating, composed of the cross
supports B and the air conduit sections C, I remark that, in stationary boiler
furnaces, the water bars A can be entirely dispersed with, and in lieu thereof I can
erect fire brick standards or columns to support the cross supports B at such points
as may be deemed necessary.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is :-
1. The combination with the flues and fire har of a boiler furnace of a caxine of

page_text: air conduits formed each of tubular laterally perforated fire clay sections put
together end to end, and a series of fire clay supports, for the said conduits, placed
below and extending cross-wise of the latter, the said supports and sections being
provided respectively with recesses and engaging shoulders, whereby they are
interlocked, the one serving to hold the other properly spaced and in place without
any rigid connection or joint between the two substantially as hereinbefore
described.
2. The combination with the flues and fire box of a boiler furnace, of the water
bars A, the transverse fire clay supports B, and the perforated air conduit sections C,
these parts being constructed, fitted together and adapted to operate substantially'
in the manner and for the purpose hereinbefore described.
Dated this 24th day of November 1893
J. H. JOHNSON & Co.,
Agents.