Improvements in Heating the Feedwater for Traction Engines and other Locomotive Engines.
Year: 1896

page_text: Date of Application, 18th Mar., 1896
Complete Specification Left 18th Dec. 1896 Accepted 27th Feb 1807
PROVISIONAL SPECIFICATION.
Improvements in Heating the Feedwater for Traction Engines and
other Locomotive Engines.
I, FREDERICK WILSON of Bentley near Doncaster in the County of York,
Machinist, do hereby declare the nature of this invention to be as follows:-
My invention relates to a simple method of heating the feed water for boilers
of traction engines, portable agricultural engines, and other locomotive engines.
In carrying out my invention I propose to utilize the space in front of the tubes,
known as the smoke box, and which is usually made of larger diameter than the
area occupied by the tubes.
I enclose this extra space so as to make an annular water chamber, of the
same pressure resisting strength or thereabouts as the boiler itself, the chimney
passing through this water space so as to communicate with the smoke box as
heretofore.
A pipe connected with the force pump enters the water space at a low point,
and an exit pipe leads from a high point in the water space to a low position in the
boiler. Back pressure valves and other details of construction are used where
required.
1
1000
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.
Improvements in Heating the Feedwater for Traction Engines and
other Locomotive Engines.
I, FREDERICK WILSON of Bentley near Doncaster in the County of York,
Machinist do hereby declare the nature of this invention and in what manner
the same has to be performed, to be particularly described and ascertained in and
by the following statement :-
My invention relates to a simple method of and means for heating the feedwater
for the boilers of traction engines, and other boilers of the locomotive type.
The annexed drawing which represents the smoke box end of such a boiler with
the door removed, and parts in section clearly illustrates the application of my
invention.
In carrying my invention into practice I utilize that space of the smoke box B,
which surrounds the open ends of the tubes T, and which is usually filled with flame
and hot gases before they pass away from the smoke box to the chimney K.
I construct in this space an annular water space C, by means of a ring of
boiler plate P, or the like, capable of sustaining a pressure equal to that of
the boiler, having at its lowest point a mud hole M, and a blow off cock E, which

page_text: is preferably connected with a sediment tank S, and at a high point I connect a
pipe to the said water space C, and also to a compensating water tank W.
This tank W, is to supply water to the heater C, to compensate for loss from any
cause such as when water is blown off at E.
The passage from the smoke box B, to the chimney K, intersects and passes through
the annular water space C, the joint being made by a ring R, interposed between
the plates P, and Q, or by equivalent means.
Water is supplied by the pipe I, from an injector or pump, entering the water
heater at a low point, and a return pipe to the boiler, marked H, is connected
with the heater at a high point, and with the water space of the boiler at any
.desired point.
Where the pipe H, enters the boiler, I may connect it with the pipe I, by means
of a stop cock, which when open permits the cold water to pass direct from the
pump or injector into the boiler, instead of through the water heater.
Instead of using the plates P, and Q, to form a permanently fixed water heater,
I may construct a separate annular water space, say for example of copper, and fix
it in the position shown, connecting it with the various inlet and outlet pipes before
described.
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 the smoke box of boilers of the locomotive type, an annular chamber
constituting a water heater, fitted with the necessary inlet or supply, and outlet or
return pipes, as herein before described and shown.
2. In the smoke box of boilers of the locomotive type, the use of an annular or
-semi-annular water chamber made as a separate part, and either permanently fixed
or detachable, provided with the necessary inlet and outlet pipes and valves, as
.herein before described.
3. The combination with the smoke box of a loco. type boiler, of an annular or
semi-annular water chamber C, supply pipe I, return pipe H, blow off cock E, and
-compensating cistern W, as hereinbefore described and set forth.
Dated the 9th day of December 1896.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.