IMPROVEMENTS IN STEAM BOILERS
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by Henry Turner at the Office of the
Commissioners of Patents on the 10th October 1883.
HENRY TURNER, of Oakfield, Upton, in the County of Chester, Engineer,
"IMPROVEMENTS IN STEAM BOILERS."
My invention relates to improvements in Upright or Vertical Boilers, which are
especially adapted for igniting and burning in an efficient manner the gases and
smoke with a view to economy in the consumption of fuel, giving ample heating
surfaces, and preventing waste of heat from the products of combustion; also
lightness with strength and simplicity of construction, and easy access for
examination and for cleaning; and also the production of cheap and effective
Boilers.
My improvements consist in constructing Upright or Vertical Boilers with four,
or more, distinct chambers. The lower Chamber forms the Furnace the two
Chambers above the Furnace, placed one immediately above the other, are the fire,
or flame boxes, or Chambers; and the fourth Chamber forms the Water and steain
space. The lower Chamber or furnace, is fitted in the usual way with fire-bars,
and is in form dome shaped, and has in the crown, central with the Boiler, a
circular aperture of suitable size to permit the fitting in of a fire clay ring, made
by preference in segments, this fire clay ring is made with the outside edge of
conical shape to suit the inclined sides of the fire box upon which it rests as a
support. The products of combustion, gases and smoke, coming from the furnace,
in passing through the fire-clay ring, when glowing surfaces are obtained by the
heat from the fire, are ignited when passing into the first fire box or chamber,
which is fitted on the top of the dome shaped furnace, in this chamber the products
of combustion expand and burn to a certain extent. The upper part of this first
fire box, or flame Chamber, is made with a contracted circular opening, also of the
required size to allow of a fire clay ring similar to the one fitted to the crown of
the furnace, and supported in a like manner; this fire clay ring, also, having obtained
glowing sides, further ignites the gases and smoke as they pass into the second
fire-box, or flame Chamber, where they burn and are more completely consumed
than in the first flame Chamber, before passing into the funnel. I make the
openings in the fire clay rings of larger or smaller size in diameter to regulate the
D...971

page_text: draught so as to suit the height of the Chimney. In the upper part of this second
fire box, or flame Chamber is secured the tube leading to the Chimney, or funnel,
and which is riveted to the top part of the shell of the Boiler.
The fire-boxes, or flame Chambers are each formed of two circular flanged
boiler plates, which join each other and are riveted together, vertically, at about the
centre of the flame Chamber, where the diameter is as great as the outer shell of
the Boiler will permit, due allowance being made for the required amount of water
space all round; and the aforesaid two plates gradually slant one in an upward
direction and the other in a downward direction towards the centre of the boiler,
where they join the crown plate of the furnace, the smoke tube, and the contracted
part where the second fire clay ring is fitted, and where the two fire boxes, or
Hame Chambers join together, the plates being suitably flanged and riveted
together. The flame boxes may be fitted with inclined water tubes; and it is
obvious that I may employ three or more fire-boxes, or flame boxes, fitted with or
without fire-clay rings.
I sometimes employ a feed water heater in combination with this Boiler, which
will consist of a Vessel of cylindrical form into which are fitted a number of
tubes surrounded by the feed water. The gases and smoke, after leaving the
Boiler, pass through the tubes, and thence into a smoke box and Chimney, or
funnel.
The feed water enters at the bottom of the cylindrical vessel, and is discharged
into the Boiler at some distance below the water level.