Improvements in or relating to Liner or Inner Tubes of Fuel Economiser or Feed-water Heater Tubes.
Year: 1895

page_text: Date of Application, 18th June, 1895-Accepted, 7th Sept., 1895
COMPLETE SPECIFICATION.
Improvements in or relating to Liner or Inner Tubes of Fuel
Economiser or Feed-water Heater Tubes.
I, Sir EDWARD GREEN, Baronet, of the Firm E. Green and Son Limited, of
Wakefield, in the County of York, Fuel Economiser Manufacturer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement :-
This invention relates to increasing the economy in fuel economisers by means of
internal tubes or vessels which also act as sediment collectors that may be easily
removed and emptied of this deposit.
It has been the common practice to employ a liner or inner tube in each of the
tubes of a fuel economiser that a thin circular body of water next the main tubes
should receive the impact of the heat of the gaseous vapours when passing in
contact, the inner or liner tubes having a body of water to commingle with the
main supply in the bottom box. These inner tubes have mostly been of a plain
character with a straight water way through them.
Another plan has been to close up or to nearly close the upper ends of the inner
tubes and have the lower ends freely open. In such cases, the inner tubes have
been hung from above and centralised by studs placed at intervals.
According to my invention and as hereafter described, I make the lower ends of
my inner tubes closed and of circular, conical, or an equivalent form and leave the
upper ends fully open. The lower closed ends serve for the reception of sludge or
other deposit from the water.
The inner tubes are supported on the bottom boxes by stems or foot pieces either
as extensions from the ends, or as separate step pieces for them to lodge on.
My invention will be more fully understood by referring to the annexed drawings
in which the foregoing outline is practically illustrated.
Figure 1 is a vertical section of two main tubes affixed in upper and lower boxes
respectively.
Figure 2 a transverse section on the line a b of Figure 1.
Figure 3 is a similar section to that shown at Figure 1.
A, B, are upper and lower boxes of the usual form, C, C, the main tubes
connecting them, the lower box B being the supply. D. D, inner tubes fully open
at top E, E, and closed at bottom F. G, G, stems or foot rods for supporting the
inner tubes D, D, on and from the lower box B. H, H, are distancing pegs to
centralise the inner tubes D, D, and J, J are holes in the inner tubes for water
communication from and to the central columns.
The chambers K, K, in the lower ends of the inner tubes serve as receptacles for
earthy deposits, or other solids from the water. By this arrangement, the water
will be cleaner for feeding a boiler than by any existing method, the chambers K, K,
being out of the line of actual waterflow, so that when refuse is once deposited it
lies undisturbed until the inner tubes be removed for cleansing.
The holes may however be in the closed ends of the inner tubes, as at L, L, for
water communication between inner tubes and lower box B.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The manufacture of inner tubes of fuel economiser tubes with closed lower
ends forming chambers for the reception of deposit from the water.

page_text: 2. Closing or partially closing the lower ends of inner tubes of fuel economiser
tubes, as set forth and substantially as shown in the annexed drawings.
3. Providing holes in or near the lower part of inner tubes of fuel economiser
tubes.
בזי
100 1
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1002
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said Sir Edward Green, Bart.
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said Sir Edward Green, Bart.