IMPROVEMENTS IN SMOKE CONSUMING APPARATUS
Year: 1874

page_text: PROVISIONAL SPECIFICATION left by William Edward Gedge at the
Office of the Commissioners of Patents, with his Petition, on the
14th December 1874.-A communication from abroad by Paul
Duboin, of Paris, France, Employé au Chemin de Fer du Nord.
I, WILLIAM EDWARD GEDGE, of No. 11, Wellington Street, Strand,
in the County of Middlesex, Patent Agent, do hereby declare the nature.
of the said Invention for "IMPROVEMENTS IN SMOKE CONSUMING APPARATUS,"
a communication to me from abroad by Paul Duboin, of Paris, France,
Employé au Chemin de Fer du Nord, to be as follows:
―:
The improvements, the subject of this Invention, consist in the par-
ticular arrangement of a fan, which continuously drives the unburnt
smoke and gasses over theflame in the fire-place in order that they may be
entirely consumed; in this manner a real saving of fuel is obtained as
well as the neutralization of this smoke, which inconveniences the
public, and which may cause serious accidents, especially to locomotives
and steamboats, in which the escape steam carries with it a thick
smoke from the chimney, and even sometimes sparks and fine coal
dust.
.
This improved apparatus is applicable to all kinds of generators, fixed
Mable whether in factories steamboats locomotives road and

page_text: rotate in the same direction when the course of the locomotive is
changed the wheels g and h are thrown in and out of gear by the lever j
on the bar for reversing motion operating the clutch i; C, pipe or con-
duit for suction of the smoke; D, smoke chamber or reservoir; E, valve
worked by a bar within reach of the fireman, and serving to regulate the
passage of the smoke; F, conduit through which the smoke is driven
into the fire-place above its grate; G, pipe leading air beneath the grate
into the ash box.
Figure 2 is a section through the fan.
Figure 3 is a longitudinal section of an ordinary generator A, upon
which is placed the smoke consuming apparatus composed of a double
fan B, a smoke reservoir C, placed at the back of the furnace; smoke
suction pipe D; pipe E, through which the smoke is driven above the
fire-grate; and pipe F, through which the air from the fan B arrives
beneath the fire-grate in order to pass through the flame and feed the
combustion of the coal and smoke.
Figures 4 and 5 represent a generator in longitudinal and in trans-
verse section. The fire-place is arranged in a special manner, and
possesses two grates, placed the one above the other. The first receives
the fresh fuel, and the second the coal already burning, and which has
given off its smoke in the first grate. This arrangement permits passing
the smoke on its return through the second grate, and to utilize it by
communicating its heat to the lateral boiler tubes placed at the side of
the boiler, and then to pass off freely by the chimney.
1
The first grate is arranged as follows:-A fixed bar next to a move-
able one, so that there will be a series of moveable bars inserted between
fixed bars.
The moveable bars are raised from time to time by means of a lever
in order to pass on to the second grate coal already well burnt and con-
taining but little gas. And it is this live coal which falling on to the
second grate serves to kindle the smoke combined with air sent by the
fan, and thus the smoke will be completely consumed.