Improvements for Preventing Incrustation in Steam Boilers.
Year: 1891

page_text: Date of Application, 6th Oct., 1881
Complete Specification Left. 19th Mar.. 1892-Accepted, 23rd Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements for Preventing Incrustation in Steam Boilers.
I, ROBERT MORRIS of 452 Manchester Road, Clifton near Manchester in the
County of Lancaster, Engineer, do hereby declare the nature of my said invention
to be as follows:-
This invention relates to improvements for preventing incrustation in steam-
boilers and consists in apparatus for conveying and delivering feed-water into the
steam space, by which the feed-water is directed upwards towards the top of the
boiler to cause the same to fall in a spray. By delivering the feed-water in
the steam space the steam operates on the water and causes the mineral.
or other substances," that forms incrustation in steam boilers, to precipitate
to the bottom of the boiler, from whence it can be scraped out during the operation
of cleaning. This I effect by attaching to the ordinary feed pipes inside the
boiler a pipe or pipes provided with a T and a cross perforated pipe with closed or
other ends to convey the feed-water into the steam space at any requisite or
desired height or point above the flues. The pipe or pipes can be of any desired
diameter according to the requirements of the steam boilers to which this
invention is applied.
1001
EDMUND CHADWICK,
Agent.
COMPLETE SPECIFICATION.
Improvements for Preventing Incrustation in Steam Boilers.
I, ROBERT MORRIS of 452 Manchester Road, Clifton near Manchester in the
County of Lancaster, Engineer, do hereby declare the nature of my said 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 for preventing incrustation in steam
boilers and consists in apparatus for conveying and delivering feed-water into the
steam space, by which the feed water is directed upwards towards the top of the
boiler to cause the same to fall in a spray. By delivering the feed-water in
the steam space the steam operates on the water and causes the mineral or other
substances, that forms incrustation in steam boilers, to precipitate to the bottom of
the boiler, from whence it can be scraped out during the operation of cleaning.
This I effect by attaching to the ordinary feed pipes inside the boiler a pipe or
pipes provided with a T and a cross perforated pipe with closed or other ends to
convey the feed-water into the steam space at any requisite or desired height or
point above the flues. The pipe or pipes can be of any desired diameter according
to the requirements of the steam boilers to which this invention is applied.
Fig. 1 is a part sectional longitudinal elevation of so much of a steam boiler as
is necessary to illustrate my invention.
Fig. 2 is a sectional plan of same, and
Fig.
3 is a transverse section through line A B in Fig. 1.
C is the shell of the boiler; D the internal flues; E the boiler front, and G the
feed-water valve. The latter is attached in the usual manner to the front or other
part of the boiler. To the orifice of the feed-water valve I attach the feed pipe
or pipes H, and carry the same in a horizontal line or otherwise to any desired
point in the boiler, at which point the pipe or pipes H are directed to the centre or
thereabouts of the boiler. On the inner end of the pipe H I mount the T pipe I,

page_text: to which are secured, by bolts or other means, the perforated pipes J, which are
disposed considerably above the water level and near the top or crown of the
boiler in the steam space. By thus mounting and placing the perforated pipe or
pipes J the feed-water-when supplied by a pump or other means-falls in a spray
on each side of the boiler as shown in Fig. 3. By delivering the feed-water in
such a manner in the steam space the steam operates on the same and causes the
mineral or other substance that forms incrustation or scale in steam boilers to
precipitate to the bottom of the boiler, from whence it may be scraped out during
the operation of cleaning. By thus conducting the feed water into the steam
space and delivering it in a spray the water is beated, thereby preventing of
minimising the risk of damage to the boiler by sudden expansion and
contraction.
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 :-
In combination with the feed-water pipes of a steam boiler the use of the
perforated pipe or pipes J disposed near the top or crown of the boiler in the
steam space, and through which the feed-water falls in a spray so as to become
heated and purified before coming in contact with the water in the boiler, for the
purpose specified, substantially as described.
Dated the 16th March 1892.
EDMUND CHADWICK,
Agent.