Improvements in Illuminating Gas Apparatus.
Year: 1899

page_text: Date of Application, 5th July, 1899-Accepted, 5th Aug., 1899
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Improvements in Illuminating Gas Apparatus.
JAMES MARK HADDEN, of Poughkeepsie, New York, U.S.A., Gas 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 improvements in illuminating gas apparatus, and
more particularly to the superheater of the Lowe or other standard type of gas
apparatus.
The object of the invention is to improve the construction and increase the
efficiency of the apparatus, by collecting the waste gases and other heated pro-
ducts of combustion, which heretofore have been allowed to escape from the
superheater into the atmosphere, and conducting them to the fuel economizer
which will utilize the heat for steam making purposes.
With this object in view, the invention consists in the construction, combination
and arrangement of the apparatus as will be hereinafter more fully described and
particularly pointed out in the claim.
Figure 1 is a diagrammatio view of the upper end of a gas superheater and the
connections embodying my invention.
Figure 2 is an enlarged longitudinal section of the tubular guide 19.
1 denotes the superheater provided at its upper end with a central opening 2
which is closed by a valve 3 carried by the lateral arms 4 fixed on the shaft 5
journaled in the brackets 6-6 secured to the upper end of the superheater:
one end of the shaft terminates in a crank-arın 7 from which a connecting rod 8
extends to a hand lever 9 fulcrumed to the external face of the wall of the
superheater.
10 denotes an elbow, the open mouth of which extends vertically above the
opening 2 of the superheater, and its main portion forms a horizontal flue 11
which communicates with the fuel economizer (not shown).
12 denotes a valve casing forming part of the horizontal flue, and in which is
mounted the transverse valve 13 which is pivoted in the upper ends of the
parallel rods 14-15 which in turn are pivoted at their lower ends on the.
bolts 16-16 fixed in the lower ends of the brackets 17-17 fixed to the valve
ensing, and 18 represents a transverse rod connecting the rods 14-15 and extend-
ing through a tubular guide 19 fixed between the brackets 17-17, and it furnishes
a convenient means for throwing the valve 13.
The opposite end of the shaft 5 also terminates in a crank arm 71 the free end of
which is pivoted to the end of the valve rod 18 so that the valves 3 and 13 may he
simultaneously operated that is to say both valves are opened or closed by the
same movement of the hand lever 9.
The rod 18 is provided with a collar 81 and encompassed by a spiral spring 91
extending between the collar 8 and the fixed flange 191 on the tubular guide 19,
the movement of -the valve 13 being rendered comparatively easy by its own
weight coupled with that of the bars 14 and valve 3, all of which tend to
counteract the tension of the spring.
20 denotes a smaller flue communicating with the elbow 10, and 21 a damper

page_text: shaft mounted in the elbow and flue at their junction and carrying a damper 22
which may be thrown into the position shown by the dotted lines in the figure and
thereby cut off all communication between the elbow and the horizontal fluc 11,
so that the heated gases will escape into the atmosphere through the vertical
fluo 20, or it may be thrown into the opposite position, across the mouth of the
vertical flue 20, and leave the passage open for said heated gases, through the
horizontal flue 11. to the fuel economizer.
The damper shaft 21 is provided with an arm 23 carrying a counter-balance
weight 24, and from the outer end of said arm, a rope or chain 25 extends through
suitable guide pulleys to within reach of the attendant stationed at the super-
heater, and which furnishes a convenient means of manipulating the damper.
Heretofore, the large volume of heated gases which escape from the super-
heater when the valve 3 was opened, was lost by passing through the vertical
flue 20 into the atmosphere, whereas in the present instance, the damper 22
being closed across the mouth of said vertical flue, when the valvo 3 is raised, the
valve 13 is opened, which permits the gases arising from the superheater to pass
from the elbow 10 through the horizontal Hue 11 whence they are conducted to
the fuel economizer (not shown) so as to utilize the heat for steam-making
purposes.
Although I have specifically described the construction and relative arrange-
ment of the several elements of my invention, I do not care to be confined to the
same, as such changes or modifications may be made as clearly fall within the
scope of my invention, without departing from the spirit thereof.
Having now described and ascertained the nature of my said invention, and in
what manner the same is to be performed, I declare that what I claim is:-
1. In combination, the valved superheater, the superimposed elbow, the vertical
and the horizontal flues communicating with said elbow, a damper located in the
elbow and adapted to alternately cut off communication between the horizontal
and the vertical flues, and an independent valve located in the horizontal flue,
substantially as and for the purpose set forth.
2. The combination with the superheater and its valve, of the elbow, its
horizontal flue, and a vertical flue communicating therewith, of a damper located
in said elbow and means for independently operating said damper and valve,
substantially as and for the purpose set forth.
3. In a gas-making apparatus, the combination with the superheater, of a valve
communicating with said superheater, an elbow mounted above said valve and
provided with a flue opening into the atmosphere, a fuel economizer flue com-
municating with said elbow, a damper mounted in the elbow and adapted to cut
off communication between the two flues, and a valve located in said fuel
economizer flue, substantially as and for the purpose set forth.
4. In combination with the superheater, the superimposed hood, the vertical
and the horizontal flues communicating with said elbow, a valve located in the
horizontal flue, and a valve on the superheater, and means for simultaneously
operating said valves, substantially as and for the purpose set forth.
5. The combination with the superheater and its valve, of the elbow and
horizontal flue and the flue valve operatively connected to said superheater valve,
substantially as and for the purpose set forth.
6. In a gas making apparatus, the superheater 1, its valve 3 and shaft 5
carrying said valve, and provided with the crank arm 10', the elbow and horizontal
flue, and the valve 13 mounted in said flue and operatively connected to said
arm 10', substantially as and for the purpose set forth.
ለለ
1000
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, Agents.