IMPROVEMENTS IN APPARATUS FOR SUPPLYING LOCOMOTIVE OR STATIONARY ENGINE BOILERS WITH WATER
Year: 1885

page_text: COMPLETE SPECIFICATION
I, HERBERT JOHN ALLISON, of the firm of Allison Brothers, Patent Agents, of
52 Chancery Lane, London, in the County of Middlesex, do hereby declare the
nature of my invention for "IMPROVEMENTS IN APPARATUS FOR SUPPLYING
LOCOMOTIVE OR STATIONARY ENGINE BOILERS WITH WATER," which invention has
been communicated to me from abroad by William Henry Rushforth, residing at
Camden, in the County of Camden and State of New Jersey, United States of
America, 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 my invention is to provide means whereby the water supplied to
the boiler may be heated before being fed thereto, by the utilization of the waste
heat heretofore unemployed for any useful purpose
As is well known, in the usual method of supplying locomotive or other engine
boilers with water from the tank, water of the temperature of the atmosphere is
forced directly into the same, whereby the temperature of the boiler is reduced
and a temporary stoppage of the generation of steam, as well as a destruction of
generated steam, caused, with the result that the motive power of the locomotive
or engine is temporarily, and to a large degree, lowered, the working of the engine
rendered inconstant, and the consumption of a large amount of fuel, to restore the
requisite pressure of steam, rendered necessary
My invention consists in carrying the water pipe or pipes, through which water
18 conveyed from the tank to the boiler, to and through the smoke box and then
causing them to discharge into the boiler, whereby the waste heat of the smoke
box is utilized in heating the water before its injection into the boiler
In the drawings, figure 1 is a longitudinal central sectional elevation of part of
a locomotive provided with my improvement
Figure 2 is a front sectional elevation on the line XX of figure 1, and figure 3
18 a detail view showing such parts of my device as are located within the
smoke box

page_text: In the drawings, A represents the boiler tubes, B the boiler, C a steam pipe
leading from the throttle valve to the steam chest, D the exhaust pipe, E the
smoke box, and F the smoke stack, all said parts being of usual and ordinary
construction
Hand G are water feed pipes leading from the water tank to and partly located
within the smoke box E
In the drawings these pipes are shown as terminating in a water dium J, which
18 provided with pipes K and L, which respectively open and empty into the boiler
at or near the top and bottom thereof
Such being the construction of my invention, its mode of operation will be
readily understood
Water being forced in any usual manner from the water tank through the
pipes G and H to the drum J escapes through the pipes K and L to the boiler, it
first having attained a high degree of temperature by the exposure of the parts
through which it is carried to the heat of the smoke box E
When the pump or injector by which the water is forced from the tank to the
boiler is stopped or thrown out of operation, a circulation is induced from the
boiler through the pipes H and K' by the heat of the smoke box, whereby these
pipes, as well as the drum J, are kept filled with water and their destruction by
the heat of the smoke box prevented
I do not confine myself to the exact construction shown in the drawings, as it
1s evident that a drum, coil, or other receptacle, provided with pipes emptying
into the boiler at points respectively near the top and bottom thereof, may be
employed instead of the drum J herein-before described without departing from
my invention
It will be readily seen that the use of my invention will, by the employment of
the heretofore unused and waste heat of the smoke box of a locomotive or other
engine obviate the destruction of steam as well as the temporary suspension of the
production of steam, incident to the introduction of cold water to the boiler, and
will increase the constancy of the operation of a locomotive and therefore to a
large extent, decrease the consumption of fuel
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 18
1 In a locomotive or other engine in combination with a water tank and boiler,
a water feed pipe, or feed pipes, a portion of which passes, or pass, through and is,
or are, located within the smoke box, for the purposes specified
1
2 In a locomotive or other engine in combination with a water tank and boiler,
a water feed pipe, or feed pipes, a portion of which passes, or pass, through and 18,
oi are, located within the smoke box, said feed pipe, or pipes, communicating with
the boiler below the water line at points near the top and bottom thereof,
respectively as and for the purposes specified
3 In a locomotive or other engine in combination a water feed pipe, or feed
pipes leading from the water tank to or terminating in a water drum or coil located
in a smoke box, two or more pipes leading from said coil or drum to and emptying
into the boiler below the water line and at points at or near the top and bottom
thereof respectively