Improvements in Feed Water Arrangements for Steam Boilers.
Year: 1891

page_text: Date of Application, 2nd Dec., 1891
Complete Specification Left, 2nd Sept., 1892-Accepted, .8th Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in Feed Water Arrangements for Steam Boilers.
I, FRANKLIN HOOD of 4 St. Saviour Street, Chorlton-on-Medlock, in the
County of Lancaster, Engineer, do hereby declare the nature of this invention to
be as follows :--
My invention relates to the arrangements in the interior of a steam boiler for
distributing the feed water pumped in the boiler and its object is to so heat the
said feed water by the boiler steam that the lime contained in the water is deposited
or precipitated before the water mixes with the water already in the water space
of the boiler.
By so arranging to precipitate lime and other solid matter I am enabled to
prevent the formation of scale upon the plates.
My invention consists in pumping the feed water into the upper or steam space
part of the boiler into a shallow tray suspended or held up in the said steam
space, or on a flat plate exposing a considerable surface. The water flows over
this surface in a thin film and is speedily raised to the full steam temperature which
causes immediate deposition or precipitation of the carbonate and sulphate of lime
with other substances contained in it. The water may be sprayed upon this plate
from the pipe above to further subdivide it, and cause it to flow from the said
plate in the form of spray and when desired it may pass from one plate to
another over a series of plates superposed or otherwise before it finally mingles
with the boiler water.
To keep the supply pipe in the top of the boiler always filled with water I
sometimes apply a valve loaded to a slight pressure to the discharge end opening
to the distributing or spraying plate.
By this invention I am enabled to entirely obviate the evil effects of unequal
expansion by preventing its existence and I prevent also the formation of scale."
Dated this 1st day of December 1891.
CLERK & MARKS,
13, Temple Street, Birmingham, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Feed Water Arrangements for Steam Boilers.
I, FRANKLIN HOOD, of 4 St. Saviour Street, Chorlton-on-Medlock, in the
County of Lancaster, 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 relates to the arrangements in the interior of a steam boiler for
distributing the feed water pumped into the boiler, and its object is to so heat
the said feed water by the boiler steam that the lime contained in the water is
deposited or precipitated before the water mixes with the water already in the
water space of the boiler.
By so arranging to precipitate lime and other solid matter I am enabled to
prevent the forination of scale upon the plates.
Referring to the accompanying sheet, the drawing illustrates in section the
application of my invention to a Lancashire or Cornish boiler.
My invention consists in pumping the feed water into the upper or steam space
part of the boiler into a shallow tray suspended or held up in the said steam
space or on a flat plate exposing a considerable surface.
The feed water passes
Price 8d 1

page_text: through the check valve A of any usual construction by the feed pipe B to a
discharge valve C whence it passes as shown to a flat circular plate E. The water
flows over this flat circular surface E in a thin film and is speedily raised to
the full steam temperature which causes immediate deposition or precipitation
of the carbonate and sulphate of lime, with other substances contained in it.
The water may be sprayed upon this plate E from the pipe B above to further
subdivide it; and cause it to flow from the said plate in the form of spray and when
desired it may pass from one plate to another over a series of plates superposed or
otherwise before it finally mingles with the boiler water. This is clearly shown at
the plates E, F, G and H which are all of circular form, and the water flows from
the plate or trough E to F and from F to G and from G to H.
To keep the supply pipe B in the top of the boiler always filled with water
I sometimes apply a valve C loaded to a slight pressure by a weight as D to the
discharge end opening to the distributing or spraying plate.
By this invention I am enabled to entirely obviate the evil effects of unequal
expansion by preventing its existence, and I prevent also the formation of scale.
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 1
claim is :-
1. A feed water purifying and heating arrangement consisting of a circular
plate or trough or a superposed series of circular plates or troughs suspended
within the steam space of a boiler, in which surface or surfaces the feed water is
pumped substantially as and for the purposes hereinbefore described and illustrated
in the accompanying drawings.
2. The apparatus as claimed in the preceding claim together with a feed pipe
controlled by a loaded valve substantially as hereinbefore described and illustrated
in the accompanying drawings.
Dated this 1st day of September 1892
CLERK & MARKS,
13, Temple Street, Birmingham, Agents for the Applicant.