An Improved Feed Water Purifier and Heater for Steam Boilers.
Year: 1893

page_text: Date of Application, 1st July, 1893
Complete Specification Left, 30th Mar., 1894-Accepted, 25th May, 1894
PROVISIONAL SPECIFICATION.
An Improved Feed Water Purifier and Heater for Steam Boilers.
I, JOSEPH ROBINSON, of Wood Street, Longwood, near Huddersfield, York-
shire, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to a new or improved means and method of supplying
boilers with feed water, and my object therein is to considerably increase the heat
of the feed water before it enters into the boiler, and by this means to aid materially
in removing scale and in preventing the formation of new scale in the boiler.
In carrying out my invention, I couple to the ordinary feed pipe or valve a pipe
which is bent upwards near the front of the boiler and extends longitudinally the
full length or nearly the full length thereof, or two or more of such pipes may be
employed. The said pipe is supported by any suitable means near to the top or
crown of the boiler and is consequently always enveloped in live steam and the
feed water admitted thereto is therefore raised to a higher temperature than has
The said pipe is
been heretofore possible before being ejected into the boiler.
perforated in one or more places on its upper side and where so perforated I place
onto the pipe one, two or more suitably shaped covers or hoods into which the
steam and water issuing from the perforations passes, and is thereby deflected or
caused to fall dawn into the boiler. The hoods or covers are secured to the pipe
by set screws or like means and may be easily removed and renewed.
By the means above described the feed water is purified and heated and
incrustation or the formation of scale prevented, whilst sudden contractions of the
metal caused by cold water impinging against the plates are avoided.
Dated this 30th day of June 1893.
TASKER & CROSSLEY,
Huddersfield, Agents.
COMPLETE SPECIFICATION.
An Improved Feed Water Purifier and Heater for Steam Boilers.
I, JOSEPH ROBINSON of Wood Street, Longwood, near Huddersfield, York-
shire, 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 a new or improved means and method of supplying
boilers with feed water, and my object therein is to considerably increase the heat
of the feed water before it enters into the boiler and by this means to aid
materially in removing scale and in preventing the formation of new scale in the
boiler..
In carrying out my invention I couple to the ordinary feed pipe or valve a pipe
which is bent upwards near the front of the boiler and extends longitudinally the
full length or nearly the full length thereof, or two or more of such pipes may be
employed. The said pipe is supported by any suitable means near to the top or
crown of the boiler and is consequently always enveloped in live steam and the

page_text: feed water admitted thereto is therefore raised to a higher temperature than has
been heretofore possible before being ejected into the boiler.
The said pipe is perforated in one or more places on its upper side and where so
perforated I place onto the pipe one, two or more suitably shaped covers or hoods
into which the steam and water issuing from the perforations passes and is thereby
deflected or caused to fall down into the boiler.
In order that my said invention may be more fully understood reference is herein
made to the accompanying drawings illustrative thereof, wherein :-
Fig. 1 is longitudinal elevation partly in section, of a steam boiler with my
improvements applied thereto; and
Fig. 2 is transverse section of same,
Fig. 3 shews a slight modification in the position of the hood or cover on the
pipe.
In the drawings letter a represents the boiler, b the feed water pipe and c the
valve for admitting water to the boiler all as ordinary.
Inside the boiler a and arranged longitudinally close to the top or crown thereof,
is a pipe d which is bent or carried down at the front of the boiler and coupled to
the valve c somewhat as shewn, the opposite end of the pipe being closed.
The
said pipe d is supported by brackets e secured to the tie rods for to other rods or
bars ordinarily used for staying the boiler, and at suitable intervals apart it is
perforated on its upper side as indicated at g. g. and over each perforated portion
is placed a metal hood or cover which is secured to the pipe by set screws i and
lock nuts j.
0
The feed water for the boiler is admitted through the valve c to pipe d and is
discharged from the latter through the perforations g. g. on issuing from which it
impinges upon the interior walls of the hoods h and is thereby deflected or directed
into the boiler.
As nearly the whole of the pipe d is situated in the steam space of the boiler and
is therefore always enveloped in live steam, it follows that the water admitted
to said pipe will be heated to a high temperature before it comes into contact with :
the water already in the boiler and with very little heat will, if not previously
vapourized, be converted into steam, whereby an economy in fuel will be effected
and sudden contractions of the metal by contact of cold water therewith will be
avoided.
A check valve k is employed in connection with the pipe d which will act in 3
conjunction with or in place of the valve c should the latter from any cause fail to
act and it also enables said valve c to be repaired or otherwise attended to when
the boiler is under pressure.
Two or more pipes d may be employed for one boiler according to requirements,
and the said pipes may be perforated in one, two or more places. The hood h
may be fixed onto the pipe d with the curve or arch of the crown thereof eccentric
to said pipe as shewn in Fig. 2 or concentric therewith as shewn in Fig. 3. In
the former case the space between pipe d and hood h may be varied, if necessary,
by forming the openings for the pipe nearer to or further from the crown of the
hood.
By placing the pipe d in the steam space in the boiler the feed water is heated to a
much higher temperature than has heretofore been possible before ejectment into
the boiler, said feed water is also purified thereby and incrustation or the formation
of scale is prevented.
Having now particularly described and ascertained the nature of my said inven- 5
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
Firstly. In steam boilers, a feed water pipe situated in the steam space of the
boiler and provided with outlets for discharging the water therefrom, together with
hoods or covers / arranged in the manner and for the purposes substantially as 5
harain home and

page_text: Secondly. The arrangement and combination of the parts for heating and
purifying feed water and distributing it in the boiler substantially as herein set
forth.
Dated this 29th day of March 1894.
TASKER & CROSSLEY,
Huddersfield, Agents for the Applicant.