Improvements in the Introduction and Heating of Feed or Supply Water to Steam Boilers.
Year: 1891

page_text: The decision of the Chief Examiner, acting on behalf of the Comptroller, of the
21st day of September 1893, allowed, under Section 18 of the Patents, &c.
Act, 1883, an Amendment of this Specification.
Date of Application, 1st May, 1891--Accepted, 6th June, 1891
CUMI LEIDDI PITT
Improvements in the Introduction and Heating of Feed or Supply
Water to Steam Boilers.
I, ADAM MILLER, of 11 Queen Victoria Street, London, in the County of
Middlesex, 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:-
-
My invention has for its object the heating of feed or supply water by steam
immediately ou entering the boiler, and which is as follows:-
place the feed check valve, through which the water enters, in the steam
space at the top or other part of the boiler. I carry the feed pipe and fix it close
to the roof of one end of the boiler and carry it circumferentially for some length.
From this feed pipe smaller pipes are connected at right angles, or otherwise, and
fixed to the roof of the boiler. These small pipes, which can be made to traverse
the whole or any part of the length or breadth of the boiler, are for the purpose
of separating the feed water into small streams.
The small streams of feed water being in contact with steam from its entrance
into the boiler, receive heat from the steam on their passage backwards and for-
wards from the front to the back, or side to side, of the boiler until they drop
into the water from the ends of the pipes lower down.
The feed water may be made to traverse backwards and forwards, close to the
roof and in the steam space of the boiler, as often as may be required to obtain
more heat.
By this arrangement for taking the feed water direct into the steam space of the
boiler; and the feed water while in the feed pipes being in constant contact with
stean, a great amount of heat is imparted to the water and at less cost than when
otherwise heated.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 shews a Lancashire steam boiler in section, with a circumferential feed
pipe placed in position in the steam space.
Fig. 2. shews a longitudinal section of a Lancashire boiler with feed pipes placed
in position.
Fig. 3. shews plan of feed pipes in a Lancashire boiler.
Fig. 4. shews a tubular boiler in section, with a circumferential feed pipe placed
in position in the steam space.
Fig. 5 shews a longitudinal section of a tubular boiler, with feed pipes placed in
position.
Fig. 6. shews plan of feed pipes in a tubular boiler.
Fig. 7 shews an upright boiler in section, with coils of feed pipes in the roof or
of the bailor and cradually approaching the water.

page_text: D. Feed check, or place for entrance of feed water.
The operations are as follows:-
The feed or supply water for the boiler is forced by the feed pump in the
ordinary way through pipes to the check valve or entrance to the boiler. It then
comes in contact with the steam and is sent on through the circumferential pipe A,
Fig. 1-6, placed in position at the roof of one end of the boiler. The feed water,
entering pipes B, then becomes divided into small streams and is forced through
the pipes B.
Figs. 2 and 3 shew an arrangement of the small separating pipes B placed in
position at the roof of the boiler. These small pipes are shewn to traverse the
boiler twice only; they may be made to carry the feed water backwards and for-
wards three or more times if more heat is desired to be given to the feed
water.
The feed water, after passing through the pipes A and B, falls through pipes C
into the water.
In upright boilers, or such as winch or donkey boilers &c., the feed water enters
at the crown or roof of the boiler by D, and passes onwards by coils of piping B,
until it falls from the pipe C into the water.
In these boilers also, two or more coils may be used to divide the feed water
into small streams as in the case of Lancashire and tubular boilers. The pipe C is
the outlet or drain pipe, and is made with small holes in the bottom or under side,
so that the feed water drops from the coil all round the shell of the boiler into the
water.
Having now particularly described and ascertained the nature of the said inven-
tion, I declare what I claim is :-
1st. The For the heating of feed or supply water for steam boilers the improved
arrangement of sending or forcing the feed or supply water through the feed pipes
placed inside the boiler and which are partly occupied by water and partly occupied by
steam and against the steam direct into the steam space, thereby raising the
temperature of the water and discharging it into the steam space and close to the
surface of the water in the boiler, substantially as described.
2nd. The For the heating of feed or supply water for steam boilers the improved
arrangement of sub-dividing the feed water into small streams by a number of
small pipes traversing from end to end, or side to side-of-the-boiler; placed inside
the boiler and which are partly occupied by water and partly occupied by steam and which
traverse the whole or any part of the inside of the boilers in the length or breadth as may
be required and, in the case of upright or similar boilers, of a coil or coils of pipes,
thereby raising the temperature of the feed water to a high degree, substantially as
described.
3rd. The For the heating of feed or supply water for steam boilers the improved
arrangement of placing the internal feed pipes close to the roof of the shell of the
boiler, thereby economizing room in the boiler and not encroaching on the space for
cleaning purposes, substantially as described.
Dated this 30th day of April 1891.