Improvements in or relating to Steam Boilers.
Year: 1890

page_text: Date of Application, 13th June, 1890
Complete Specification Left, 14th Mar., 1891-Accepted, 18th Apr.. 1891
PROVISIONAL SPECIFICATION.
Improvements in or relating to Steam Boilers.
I, WALTER GRIMES, of Silverlands, St. Margarets, Twickenham, in the
County of Middlesex, Traveller, do hereby declare the nature of this invention to
be as follows:-
This invention relates to steam boilers of various kinds used in connection with
high pressure steam engines the general object in view being the utilization of the
exhaust steam in the fire-box of the boiler. The invention may be applied to
various kinds of boilers where the steam from the engines is not condensed such as
locomotive, marine and stationary, whether horizontal or vertical and in carrying
it into effect I prefer to proceed as follows:-
Instead of allowing the exhaust steam to be delivered direct into the funnel or
uptake I prefer to carry it back by any convenient means as by one or more pipes
divided or otherwise according to. circumstances to the fire-box of the boiler
into which I introduce it by any suitable means preferably by branches from a
single pipe which may pass through the fire door or, and this I prefer the pipe
may enter between the walls of the fire-box so as to be surrounded with water
and will deliver the steam to the furnace through suitable pipes or openings in the
inner wall of the fire-box.
If preferred tubes may be arranged to pass through both walls of the fire-box
communicating with the supply pipe on the outside or other suitable means may be
adopted for the introduction of the exhaust steam.
Dated this 13th day of June 1890.
W. P. THOMPSON & BOULT,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to Steam Boilers.
I, WALTER GRIMES, of Silverlands, St. Margarets, Twickenham, in the
County of Middlesex, Traveller, 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 :-
This invention relates to steam boilers of various kinds used in connection with
high pressure steam engines the general object in view being the utilization of the
exhaust steam in the fire box of the boiler. The invention may be applied to
various kinds of boilers where the steam from the engines is not condensed such as
locomotive, marine and stationary, whether horizontal or vertical and in carrying it
into effect I prefer to proceed as follows:-
Instead of allowing the exhaust steam to be delivered direct into the funnel or
uptake I prefer to carry it back by any convenient means as by one or more pipes
divided or otherwise according to circumstances to the fire-box of the boiler into
which I introduce it so as to deliver the steam to the furnace through suitable pipes
or openings in the inner wall of the fire-box.
In the accompanying drawings,
Figure 1 is an elevation from the side facing the boiler of an apparatus adapted
to carry my invention into effect.
Figure 2 is a plan partly in section of the same the section being taken on
line 22 of Figure 1.

page_text: Figure 3 is an end view partly in section showing the application to the fire-box
of a locomotive engine.
Figure 4 is a small diagram illustrating the same application, and
Figure 5 is an end view showing another manner of applying the apparatus to a
boiler.
Like letters indicate like parts throughout the drawings.
A. represents the main box or pipe into which the exhaust steam is delivered by
the branch or connection B to which is fastened the pipe conducting it from the
cylinders. The box A as shown in Figures 1, 2 and 3 is a rectangular casing pre-
ferably of cast iron, and with all its walls integral or as shown in Figures 2 and 3
having the back separate and fastened on by screw bolts C. Into the boiler side
of this box are screwed any required number of nozzles D each preferably pro-
vided with a hexagonal collar or flange D¹ by which to screw it and upon which
nozzle is screwed or otherwise secured as by a tight fit a short tube or pipe E in
the side of which are one or more openings or perforations F. The box A is
placed up against the front wall of the fire-box (the nozzles and tubes E entering
the wall of the fire-box and extending as far through it as may be required. In
Figure 3 the fire-box is shown as cut away so as to leave a space sufficiently large
to accommodate the whole of the nozzles but if preferred a separate opening
through the fire-box may be provided by the insertion of a tube for each nozzle or
tube E as shown in Figure 5.
In operation the exhaust steam enters the box A by the branch B as already
explained and passes by the nozzle D into the tube E and so into the fire-box the
opening F in the tube E permitting the entrance of air along with the steam into
the fire-box.
The diagram Figure 4 shows the general arrangement of the particular appli-
cation of this invention illustrated in the other figures and it will be apparent that
the box A and its appurtenances may be cased in or lagged to protect it and prevent
radiation if desired."
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
1. In an apparatus such as described the combination with the exhaust steam box
or casing A of a nozzle D and tube E having one or more air openings F sub-
stantially as described and illustrated in the accompanying drawings.
2. The combination with the fire box of a steam boiler of a box or casing such
as A having nozzles D and air tubes E the said tubes and nozzles passing entirely
or partially through the wall of the fire-box substantially as described and
illustrated in the accompanying drawings.
3. The combination with the fire-box of a steam boiler of an apparatus for
supplying the exhaust steam thereto in which a number of nozzles and air tubes
such as D and E are employed each combined nozzle and air tube entering the
fire-box by a separate tube or opening substantially as described.
4. The combination and arrangement of parts constituting the complete exhaust
steam utilization apparatus substantially as described and illustrated in the
accompanying drawings.
'ווה
1
1 1001
WALTER GRIMES.
W. P. Thompson & Boult,
Agents for the Applicant.