Improvements in Furnaces.
Year: 1889

page_text: Date of Application, 30th Jan., 1889
Complete Specification Left, 30th Jan., 1889-Accepted, 7th Sept., 1989
PROVISIONAL SPECIFICATION.
Improvements in Furnaces.
JOSEPH EWING Senr. Engineer 26 Highfield Square Stoneycroft near Liverpool
I do hereby declare the nature of this invention to be as follows:-
Preservation of fire-bars, & the economy of fuel-This appliance is a simple
cockle-mouthed connection, (brass or iron) at end of a " pipe diminished to "pipe,
to excite the oxygon & carbonic acid gases in coal, by unity with the gas ejected in
the steam from this blower connection, placed immediately at the mouth of the flue to
a steam-boiler, & carried off after passing through the fire, with the other gaseous
products of combustion. It preserves the bars by keeping same at a cool temperature,
& saves the corrosion of the iron, caused by its fusibility at a higher temperature.
Dated this 26th day of January 1889.
COMPLETE SPECIFICATION (AMENDED)..
Improvements in Furnaces.
JOSEPH EWING Senr. Engineer 26 Highfield Square Stoneycroft near Liverpool I
do hereby declare the nature of this invention and in what manner the same is to be
performed, to be particularly described ard ascertained in and by the following
statement:-
The 'Gennao' is an appliance for conveying steam (low compressed preferable) to
a boiler or other furnace for the purpose of producing combustion, in conjunction with
the Oxygen gas in the coal, the two uniting to effect or maintain a bright fire i.e. by
a 1" inch copper or brass pipe connection small pipe connected with the boiler or steam
pipe, carried immediately from the dead plate of the furnace to the bars so as to
give out a spray of steam on their underside.
I declare this appliance or' gennon' to be my own invention, which appliance
herein described I have not before seen, or suggested, and is to effect the preservation
of fire-bars, & to cause economy of fuel.
It is a hollow or shell casting, slit round at the aperture c on sketch herewith, to
spread a spray of steam under the setting of fire-bars, directed through oval cavity d. e.
from screwed neck or nozzle F and passing from cavity d. e on section view, & thence
to c, the steam in this capacity preserving the bars below fusion heat or 2,800° Fabr.
This shell or blower is placed at the flue or mouth of a the furnace, to spread! a jet
or spray (of steam) to preserve the bars at even temperature, and produce combustion
and whereby a saving of fuel is gained, found to be equal to 5 per cent.
A convenient size for the pipe is inch diameter and with such a pipe a convenient
The size of this the casting is 41" ins. x 31" ins., & shaped to sketch herewith.
By this action, more area is given the furnace for heat, as a thinner sectional bar
may be used, than at present, with no less liability to warp, or twist, or frizzle away,
in the exudated heat action of a furnace, and is therefore preferable to any bar now
obtaining to effect that object in the market, whether hollow, or channel, or other
fire bur
Besides these advantages tha bonis bant coal & the firm free of slax & alinkon

page_text: which formation is prevented by vitrifications of silicate and iron present in coal, &
the bar kept below the fusing point, and labored pokering avoided.
Without refering to the chemical results of the evaporation of water, the properties
of steam as an elastic gas, & its chemical contact, & affinity is well known. But
the netion of this gas in combination with carbonie gas, & air, which last it is
known will not support combustion until heated to 1000° Fah, & therefore until it
Requires that temperature by coming into contact with the heated mass of the fire,
must act prejudicially, from which it is manifest that the nearer it can be brought to
that point before entering the fire, the better; is not as a principle fully investigated.
And water under chemical decomposition, & its natural combinations, with acids, &
alkaline properties, & lime, under varied contrasts, or heads, & its contact with sulphur
in the furnace, is the basis of unity of inflammables, and the strong affinity of carbon
for oxygen gas, ne forming carbonie noid gas, charcoal, &c. & some other carbonaceous
substitutes, known in analysis of metal mineralogy.
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
The preservation of firebars, & economy of fuel by an appliance of this 'gennao'
nozzle mouth, in the connections stated herein.
Dated this 30th day of January 1889.