Improvements in Feeding Flash Boilers.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Feeding Flash Boilers.
CHARLES TENNETT, Engineer, 108A Leeds Road, Bradford, ERNEST ALBERT
VERITY and JOHN HEPTINSTALL VERITY, both of 180, Chapeltown Road, Leeds,
Ironmongers, all in the County of York, do hereby declare the nature of this
invention to be as follows:-
In flash boilers of the coil tube type we employ an air chamber, nozzle, and
check valve in order to inject water into the heated coil to produce steam instan-
taneously in the following manner. The nozzle is screwed to the lowest part
of the coil. The air chamber is placed between the nozzle and the check valve
so that as the feed water is delivered through the check valve from the pump
the air is compressed in the air chamber and causes the water to flow through the
nozzle in a continuous stream of spray.
CHARLES TENNETT.
ERNEST ALBERT VERITY.
JOHN HEPTINSTALL VERITY.
Improvements in Feeding Flash Boilers.
We, CHARLES TENNETT, of 108A Leeds Road, Bradford, Engineer, ERNEST
ALBERT VERITY, of 180, Chapeltown Road, Leeds, Ironmonger, and Joux HEP-
TINSTALL VERITY, of 180, Chapeltown Road, Leeds, Ironmonger, all in the County
of York, 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:-
Our invention is an improvement in the coil tube or other type of flash boiler.
The object is to inject water into the heated coil in a continuous spray, and so
to generate steam instantaneously and continuously.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a sectional elevation of our improved apparatus.
Fig. 2 is a plan of same.
In carrying out our invention we employ an air chamber A, a check valve B,
and a delivery nozzle C or a series of such nozzles.
The air chamber A, which may be of any suitable size or shape, is fixed to
the feed pipe D between the delivery nozzles C and the check valve B.
07

page_text: The delivery nozzles C may be of any suitable length and have a fine tapering
orifice, and are screwed or otherwise connected to the coil at any suitable part.
The feed water, on being delivered by the feed pump through the check
valve B, passes to the delivery nozzles C in the feed pipe D, and as the outlet
through the nozzles is contracted the air in the chamber A is compressed. The
pressure thus produced causes the feed water to be injected through the orifices
of the nozzles C in a continuous spray or finely divided jet, instead of an inter-
mittent injection as would be caused if no air chamber A were employed. Steam
is therefore instantaneously and continuously generated within the heated coil.
The pressure produced in the chamber A varies according to
ber of the delivery nozzles C, and is maintained as long as the teeu is in
operation.
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mam-
The check valve B may be of any suitable type, but a ball valve is preferably
employed.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what
we claim is; -
1. In connection with the feed pipe in flash boilers of the coiled tube or other
type, the employment of an air compressing chamber to give a continuous injec-
tion of feed water to the heated coil, substantially as shown and described.
2. In flash boilers of the coiled tube or other type, the combination of the air
chamber A, check valve B, feed pipe D, and delivery nozzle or nozzles C, all
arranged substantially as, and for the purposes, shown and described.
Dated this 7th day of September. 1898.
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds,
Patent Agent for the Applicants.