provements in or relating to Fuel Economisers and their Fittings, specially adapted for Marine Boilers
Year: 1895

page_text: PROVISIONAL SPECIFICATION
Improvements in or relating to Fuel Economisers and their Fittings,
specially adapted for Marine Boilers
I Sir DDWARD GREN, Byronet, of the firm Ẹ Green and Son Limited, of
Wakeneld, in the County of York, Fuel Economiser Manufacturer, do hereby
declare the nature of this invention to be as follows
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This anvention relates to amprovements in or aelating to fuel economisers and
their fittings specially adapted for mambę boilers.
To carrymminvention into practice, I arrange nests of vertical or horizontal
pipes in series connected by bends, elbows, or by boxes for circulation of feed water
and heating same preferably by a first downward flow, said tests being in the
smoke boxofa-marine-boiler or in-a-chamber connected therewith, or in a flue
way or stack pipe of such a boiler, or of another type of boiler
The tubes are provided with scissor-like scrapers reciprocal by hand or by power
to keep the exterior of the tubes clean Each scissor like blade has a balance
weight or tumbler at one end and these are jointed in opposite order in pairs or ID
series to rods of a-traversing frame operable by an endless chain from the necessary
gear
If the feedthe downwardly provide each tube of the first flow nest. on series
with decreasing inlets to limit the quantity for equal flow to all the tubes of the
first nest or first senes whether from pe or fiom-box headers, the 'water inlet
being preferably at the upper part and at the coldest part of the smoke box, stack
or clamber in which tlie economiser is placed
!
I arrange stop plates between the flanges of the connections to cause the water
to flow an the requiredzigzag or other course, and to enable the nests or series of
tubes to be readily fitted in position I make each nestion series alike,so that they
arcanterchangeable, and provide the necessary doors an the casing an relation to
the nests or series to enable them to be fitted an,taken out, or have repairs effected
with ease, and where a tube only requires renewal, any one of the elbows or bends
or box plates can be readily detached for the purpose
Dated this Ist day of May 1805
H GARDNER,
Patent Agent, 166 Fleet Street, Bōndon,
Agent for the said Sir Edward Green; Bart.
COMPLETE SPECIFICATION
Improvements in or relating to Fuel Economisers and their Fittings,
specially adapted for Marine Boilers.
1
+
L.“Sự EDWARD GEEN, Baronet of the firm Green and Sop Limited of
Wakefield an the County of York, Fuel Economiser Manufacturer, do hereby
declare the nature of his invention, and manner, the same, is to be
performed to be particularly described and, ascertained in and by the following
tatanis

page_text: To carry my invention into practice, I arrange nests of vertical or horizontal
pipes in series connected by bends, elbows, or by boxes for circulation of leed water
and heating same preferably by a first downward flow, said nests being in the smoke
box of a marine boiler, or in a chamber connected therewith, or in a flue way or
stack of such a boiler, or of another type of boiler
pipe
If the feed be downwardly, I provide each tube of the first flow nest or series with
decreasing inlets to limit the quantity for equal flow to all the tubes of the first
nest or first series whether froin pipe or from box headers, the water inlet being
preferably at the upper part and at the coldest part of the smoke box or stack or
chamber in which the economiser is placed
1 arrange stop plates between the flanges of the connections to cause the water
to flow in the requned zigzag or other course and to enable the nest or series of
tubes to be readily fitted in position
The tubes are provided with scissor like scrapers reciprocal by hand or by power
to keep the exterior of the tubes clean Each scissor like blade has a balance
weight or tumbler at one end and these are jointed in opposite order in pairs or in
series to rods of a traversing frame operable by an endless chain from the necessary
gear
My invention will be clearly understood by the annexed drawings
Figure 1 vertical end elevation of a marine boiler with a nest of economiser tubes
in the smoke box thereof
Figure 2 a partial plan to indicate the direction of water feed
Figure 3 part sectional elevation of end of an economiser
Figure 4 elevation of scissor like scraper for use on exterior of economiser tubes
A marine boiler smoke box or stack pipe base B feed tube branch to
which the first nest of economiser tubes D, D, are connected, each of said tubes
having nozzles E, E with decreasing passages to ensure all those tubes taking an
equal quantity of water downwardly into them F, F, are bottom boxes of the
first nest of tubes (a single row of said tubes being fixed to each top and bottom
box) into which the water flows and then by the connection G to the next nest of
tubes H for up flow and so on in a zigzag course to the outlet I for as many nests
of tubes and boxes that may be fitted
The connections are of pipe form and of determined lengths according to the
number of boxes to constitate a nest
Where a break for reverse flow of water is desired, I arrange stop plates, as
at J, between the meeting ends of the connectious, or the ends may be permanently
closed, as at K, each connection at top and bottom being alternately arranged to
take two nests of tubes.
I have only shown one feed pipe B but if a duplicate branch C be fitted to the
other side of the first nest, a double feed of water can be provided or either can
be used at will.
The lower branch or branches or connectious of the last neat of the series can be
fitted with a draw off or sludge tap Las found convenient.
I have in the drawing represented my nests of economiser tubes, boxes, and
branches or connections fitted vertically, for which purpose I employ the decreasing
inlets E but if my said improved economiser be arranged horizontally, the
decreasing inlets will not be fitted in the first nest of the series
By my said invention, the first neet takes the chill off the feed water before it enters
the main series of tubes or the after nests, the nozzles regulating and distributing
the cold feed water and renders it by its broken up condition when leaving the
nozzles to partake of the heat of the tubes which naturally rises, the water of sard
several tubes being brought to an even temperature for entering the second nest or
main series of tubes in a heated condition.
The scissor like Jointed scrapers M are 10 opposite order in pairs each blade
baving a balance weight or tumbler N adjustable to determine the scraping friction
on the tubes.
5

page_text: Having now particularly described and ascertained the nature of this inven-
tion and m what manner the same is to be performed I declare that what I
claim 15
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1. The system or method of arranging fuel economisers vertically and in which
the water of the first nest is caused to flow downwardly and is placed nearest the
source of heat to take the chill off the water prior to uprising in the remainder or
other tubes, as set forth.
2 Constructing fuel economisers in nests of tubes, boxes, and connections capable
of being connected up in series interchangeable with each other as and in the
manner described and substantially as represented in the annexed drawings.
3 Constructing fuel economisers in nests which if set and connected up vertically
as represented, the tubes of the first nest have decreasing inlets as and for the
purpose set forth.
The 1st day of February 1896
H GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said Sir Edward Green, Bart.