Improved Apparatus for Heating and Purifying Water Formed in the Condensers of Steam Engines.
Year: 1894

page_text: Date of Application, 22nd Jan., 1894
Complete Specification Left, 19th Oct.. 1894-Accepted, 24th Nov., 1894
PROVISIONAL SPECIFICATION.
Improved Apparatus for Heating and Purifying Water Formed in the
Condensers of Steam Engines.
I, LAWSON PICKARD of Irton near Scarborough in the County of York
Mechanical Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention has for its object the re-heating and separation from grease and
other impurities, which rise in the form of scum, of the water formed by
condensation in the surface condensers, and other suitable apparatus employed for
a like purpose, in connection with steam engines.
For this purpose I employ troughs of U or V section, which are fixed parallel
with and within a few inches of the sides and back end of horizontal boilers.
The lower parts of these troughs project downward into the side flues of the
boiler, and in these flues they receive sufficient heat for the purpose required.
Across the troughs, at regular intervals, are fixed by means of flanges, a number
of baffle-plates, half the number of which have a space left under them, through
which the condensed water flows, and the other half of the baffle-plates do not
reach to the top of the troughs, but have a space left above them, through which
space the water also flows, over such plates.
These two forms of baffle-plates are fixed alternately, in order that the flow of
water may take place under one plate, and over the next, and so on, through the
entire length of the three troughs above mentioned.
The water from the condenser flows in at one end of the troughs, at the boiler
front, and becomes re-heated, and as it passes under and over the battle-plates the
scum and grease which naturally rise to the surface, are retained by the upper
series of plates, until the water has been more thoroughly skimmed and cleansed by
each plate it comes in contact with; it then passes out at the other end of the troughs,
also at the boiler front into the feed-pipe for supplying the boiler. The baffle- or
end-plate at the outlet end of the troughs is made several inches higher than the
other baffle plates.
The scum and grease are drawn off at intervals as required by means of a pipe
provided for that purpose.
Loose covers are fitted to the troughs, to keep out dirt and retain heat.
Dated this Twentieth day of January 1894.
WILLIAM J. BAKER,
Peasholme House, Scarborough, Agent for the Applicant.
COMPLETE SPECIFICATION.
5 Improved Apparatus for Heating and Purifying Water Formed in the
Condensers of Steam Engines.
I, LAWSON PICKARD, of Irton near Scarborough in the County of York,
Mechanical 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 has for its object the re-heating and separation from grease and
other impurities, which rise in the form of scum, of the water formed by

page_text: condensation in surface condensers, and other apparatus in which the con lensation
of exhaust steam is effected, in connection with steam engines.
For this purpose I employ troughs of Ų or √ transverse section, which are fixed
parallel with and at a short distance from the sides and back end of horizontal
boilers.
The lower parts of these troughs project downward, into the side and end flues
of the boiler, and in these flues they receive sufficient heat for the purpose
required.
A cross the troughs, at regulated distances, are fixed or cast a number of baffle-
plates or partitions, half the number of which have a space under them through
which the water passes, and the other half of the baffle-plates touch the bottom of
the troughs but are sufficiently shallow in height to allow the water to pass
over them.
These two kinds of baffle-plates, bereinafter referred to as upper and lower
plates respectively are fixed alternately in the troughs, and thereby give an
undulating motion to the water passing along the troughs, in addition to which the
upper plates act as skinımers, holding back any scum which rises to the surface of
the flowing water.
The last baffle-plate, near the outlet end of the troughs, is higher than the
other plates, and acts as a dam for the water in the troughs, regulating its
working level.
When greasy water is admitted to the troughs, it shortly becomes heated, and
the contained grease rising to the top, is held back by the upper plates, the
purified and heated water flowing out by a feed pipe fixed to the outlet end of the
troughs.
When a quantity of scum has accumulated, the valve of the feed pipe is closed,
and clean water admitted to the troughs, sufficient to cover and wash over the tops
of the upper plates, and to flush out all scum and grease by the broad-mouthed
waste-pipe, which opens out of the trough at one end, and conducts the refuse to
a drain.
In order to enable this invention to be fully understood, I will proceed to describe
the same with reference to the accompanying drawings in which :-
Figure 1 represents a transverse sectional elevation of an ordinary Lancashire
boiler and flues fitted with my heating and purifying troughs.
Figure 2 represents a longitudinal elevation of a boiler, with the purifying
troughs in section.
Figure 3 represents an elevation of a boiler front with purifying troughs and
connecting pipes.
Figure 4 a plan of the same boiler and troughs.
Figure 5 a transverse section of trough, with upper baffle plate or skimmer.
Figure 6 also section of trough, with lower baffle plate.
Figure 7 a longitudinal section of trough and baffle plates.
Similar letters are employed to indicate similar parts in all the drawings.
Figures 5, 6 and 7 are on an enlarged scale.
The boiler is represented at a a, the heating and purifying troughs at b b in which
are the upper plates c c, the lower plates d d and the end, or dam plate e, which
maintains the water at the required level.
The greasy water enters the troughs by the pipe f and after being heated and
purified in its passage, in the manner described, and in the direction indicated by
arrows (Fig. 2), it leaves the troughs at the feed pipe g.
To flush out the troughs and clear them from scum and dirt, the feed pipe is
closed, and a supply of clean water entering at j, is allowed to nearly fill the
troughs, sweeping with it all the accumulated scum into the mouth of the waste
pipe h.
In Figures 5 and 6 flanges are represented at 11 by means of which lengths of
trough are bolted together, and a cover at m m which is provided for the purpose
of keeping out dirt, and retaining heat.

page_text: 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 :-
1. In apparatus for heating and purifying water, troughs provided with upper
and lower baffle-plates constructed and operating in the manner described, and as
represented.
2. For heating and purifying water the troughs with baffle-plates as described
and represented, the said troughs being sunk into the side and end flues of a boiler,
where they are heated as required.
3. The construction, operation, combination and general arrangement of the
various parts of the apparatus herein described and represented for heating water
and removing scum therefrom including the troughs heated by the boiler-flues, the
alternate upper and lower baffle plates, the dam-plate for maintaining the water
level, the inlet and outlet pipes and flushing waste-pipe.
Dated this 18th day of October 1894.
WILLIAM J. BAKER,
Peasholme House, Scarborough, Agent for the Applicant.