AN IMPROVED STEAM GENERATOR FOR THE USE OF LIQUID FUELS AND IMPROVED APPARATUS FOR BURNING LIQUID FUELS THEREIN
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by Hugh Montgomerie at the Office of
the Commissioners of Patents on the 16th December 1882.
HUGH MONTGOMERIE of Cleadon in the County of Durham, Engineer "AN
IMPROVED STEAM GENERATOR FOR THE USE OF LIQUID FUELS AND IMPROVED
APPARATUS FOR BURNING LIQUID FUELS THEREIN
"
My invention relates firstly to an improved form of steam generators or boilers
for using liquid fuels such as petroleum, naphtha, kerosine, or similar oils or any
mixture of such oils in which the flame and gases are caused by forced draft to
make a number of traverses through flues and tubes before reaching the chimney
and thus to impart nearly the whole of their heat to the water; and secondly to an
apparatus for the application and burning of such liquid fuels in the furnaces of
steam generators or boilers.
To carry out the first part of my invention I propose to construct the steam
generator or boiler with one or more furnaces, extending through its entire length
terminating in a combustion chamber or chambers formed separately from the
generator or boiler and protected from radiation or over heating by any of the well
known appliances. From the combustion chamber or chambers the flame and gases.
return through side flues to the front where they are received in chambers formed
separately from the generator and conveyed by small tubes, above the side flues,
again to the back into an upper combustion chamber or chambers where they unite
and again return to the front through small tubes, above the furnace or furnaces,
into an uptake which leads to the chimney.
I propose to so arrange the small tubes in the various groups as to facilitate the
upward tendency to spreading and dispersion of the flame and gases among the
tubes and thus to increase their heating efficiency
To carry out the second part of my invention I construct a burner in the
form of two cones, one within the other, the outer cone being bored out and
the inner cone turned up on outside, leaving a very small annular space between
them, open at their larger ends but closed at their smaller ends.
The annular space between the two cones can be increased or diminished and
adjusted to the greatest nicety by a screw and nut which will draw the inner cone
into the outer one or vice versa.

page_text: The smaller end of the inner cone terminates in a screwed shank which receives
a cock connected by a pipe to an air reservoir, containing compressed-air.
The smaller end of the outer cone is also fitted with a cock which is connected by
a pipe with a reservoir containing the liquid fuel to be used.
In the larger end of the inner cone is fitted a circular disc by which the outlet
for the air can be regulated with extreme accuracy.
4
The liquid fuel, being admitted to the annular space, flows to the open end and
there meets with a strong current of air admitted under pressure, by the cock from
the air reservoir which converts the. fuel into a spray which, being ignited, the
flame is carried forward in a circular spreading form so as to fill the whole area of 1
the furnace.
When desirable any portion of the annular outlet for the fuel may be stopped by
inserting thin strips of metal so as to make the flame of a crescent form, or a series
of sectors of the circle, and cause it to play only upon certain portions of the
furnace.
The reservoir in which the air is contained is supplied by a separate pump which
may be operated by hand until steam is available.
By means of this pump air is forced into the reservoir under any fixed pressure
which is prevented being exceeded by a safety valve.
In some cases steam may be used to supply the current to the burner but I 2
prefer the use of air as being more effective.