Improvements in Steam Locomotives for Common Roads.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Steam Locomotives for Common Roads.
We, WILLIAM SIMPSON, of 8, Minshull Street, Manchester, in the County of
Lancaster, Cotton Manufacturer, WALTER LIGHT BODMAN, of Village View, Bur-
nage Lane, Didsbury, in the County of Lancaster, Carriage Builder, and DANIEL
HARRISON SIMPSON, of One Oak, Cheadle Hulme, in the County of Chester,
Engineer, do hereby, declare the nature of this invention to be as follows:-
This invention relates to improvements in steam locomotives for common roads
more especially such as have instantaneous steam generators in which water is
injected and formed into steam in proportion to the immediate consumption
required, and the object of these improvements is to obtain greater efficiency in
the working and manipulation of such generators.
In carrying out our invention we prefer to add and fix a steam drum or chest
at some distance away from the heat of the furnace. This chest is preferably
cylindrical and has the steam inlet near to one end and the steam outlet near
to the other end. We pass the feed water pipe to the boiler, which it enters at
the lowest part of the coil, through the steam chest longitudinally in order to
heat the feed water. We arrange a water tank in any convenient position and we
carry two feed pipes one to a power pump worked by the engine and one to a
hand pump
worked preferably by a hand lever which latter serves to feed the
boiler at starting.
The outlet pipes of the two pumps join the feed water pipe previous to entering
the steam chest. Another branch pipe in which is a turn cock leads from the
feed pipe and the pumps into the steam chest through which pipe by the injection
of water thereinto the superheated steam therein is deprived of some of its
heat, when necessary.
There is a branch leading from the feed pipe into the water tank and in this
branch there is a spring safety valve which permits the feed water to be ejected
back directly into the water tank when the pressure of steam in the boiler is above
a predetermined height.
17 1
1000

page_text: Improvements in Steam Locomotives for Common Roads.
We, WILLIAM SIMPSON, of 8, Minshull Street, Manchester, Cotton Manufac-
turer, WALTER LIGHT BODMAN, of Village View, Burnage Lane, Didsbury, both
in the County of Lancaster, Carriage Builder, and DANIEL HARRISON SIMPSON, of
One Oak, Cheadle Hulme, in the County of Chester, 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:-
This invention relates to improvements in steam locomotives for common roads,
more especially such as have instantaneous steam generators in which water is
injected and formed into steam in proportion to the immediate consumption
required, and the object of these improvements is to obtain greater efficiency in
the working and maintaining of such generators.
And in order that our invention may be more fully understood and carried into
practical effect we have hereunto annexed a sheet of drawings illustrating
diagramatically in Fig. 1 the essential or salient features of our invention, and
we will now proceed to describe the same with the assistance of the various
figures and letters of reference marked thereon.
23
(A) designates the generator or boiler which is of the "flash' or instantaneous
type. The steam after leaving the boiler and on its way to the engine, enters the
steam chest or drum (B) through (B). This drum is situated in any appropriate
relation to the generator (A) but preferably some distance from the furnace (C)
of such generator. It is also by preference, cylindrical with spherical ends and
with inlet and outlet for steam near each end. Through such drum or chest the
feed-water pipe (D) passes as illustrated. (E) is a water-supply tank from which
we carry two pipes (G) and (F), pipe (F) to a power pump (H) and pipe (G) to
a hand pump (J) operated by hand-lever (J) which latter serves to feed the builer
at starting.
(k) and (L) are the outlet pipes of the pumps, which both join the feed-water
pipe (D) as illustrated, hence when fully started by pump (J) the feed is main-
tained automatically by pump (H).
Leading from the feed pipe (D) is a branch pipe (D) and upon such pipe is a
suitable relief valve (M) which permits the feed water to be ejected back directly
into the water tank when the pressure of steam in the boiler exceeds a predeter-
mined height.
The effect of the feed water passing through the steam chest (B) is of a twofold
character, first, to raise the temperature of such water preparatory to entering
the boiler, and secondly to reduce the super-heated steam to an equable or work-
ing temperature suitable for the engines."
For blowing off, or testing purposes we provide pipe (R) with turn cock (S)..
Connected to the feed pipe and pumps is another pipe (T) fitted with turn-
cock (U) and leading into the steam chest through which pipe water may be.
injected for depriving the super-heated steam in the steam chest of some of its
heat when necessary. For cleaning the steam chest we further provide it with
a mud outlet pipe (V) and cock (W).
The manner of mounting and heating the boiler and grouping the several parts
of our invention will vary in detail with each construction of road locomotive,
and will be readily effected by those conversant with road locomotive engineering.

page_text: Having thus particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is;-
1: In combination with an instantaneous steam generator or "flash" boiler,
a reserve steam drum receiving the steam from the generator, a boiler feed-water
supply pipe passing through such steam drum, and means for controlling and
supplying such feed water and allowing for the ejectment of such water back into
the supply tank, substantially as set forth.
WILLIAM SIMPSON,
WALTER LIGHT BODMAN,
DANIEL HARRISON SIMPSON,
By John G. Wilson & Co.,
Agents.