IMPROVE- MENTS IN ARRANGEMENTS FOR ECONOMIZING FUEL AND CONSUMING SMOKE, APPLICABLE TO STEAM BOILER AND OTHER FURNACES
Year: 1878

page_text: PROVISIONAL SPECIFICATION left by George Lowry at the Office of the.
Commissioners of Patents on the 30th August 1878.
GEORGE LOWRY, of Salford, in the County of Lancaster, Engineer.
"IMPROVE-
MENTS IN ARRANGEMENTS FOR ECONOMIZING FUEL AND CONSUMING SMOKE,
APPLICABLE TO STEAM BOILER AND OTHER FURNACES."
My Invention consists as applied to steam boilers in arranging a fire-box in front
of the boiler and opposite the entrance to the internal flue or furnace, and in this
fire-box I arrange a series of fire-bars at a considerable inclination, and another
series of fire-bars in nearly a horizontal position as a continuation from the lower
ends of the inclined fire-bars.
The horizontal or nearly horizontal fire-bars are all carried by a shaft or axis,
which has bearings at the side of the fire box, and on the end of the shaft there
is a handle, by which the shaft, and thus the fire-bars, may be oscillated like a weigh
beam.
There are or may be two or more sets of these horizontal fire-bars connected to
oscillate together, and feed forward the burning fuel. There is an ash space left
below the horizontal fire-bars.
The inclined fire-bars are also or may be arranged on a shaft in like manner to
be oscillated or to turn them to feed the fuel forward, and to clean the grate-bars,
and for other purposes.
From the horizontal fire-bars there is or may be a flat plate or slab of
fire-brick or other material, to form a continuation of the fire-bars to support
the fuel, and through which air heated in passing is or may be admitted, if
desired.
The fire-box in front of the inclined bars is open to admit air, and this opening
has a damper by which the admission of air is regulated.
Extending across the fire-box there is a projection, the under side of which is on
a level with the upper part of the flue to the boiler. This projection is or may be
made of fire-brick material, or it is or may be made of metal, hollow, and air is or
may be admitted to it to get heated, and then pass through orifices in it to meet
the flame entering the flue; or liquid fuel is or may be fed with air through this

page_text: hollow projection if desired; or this projection is or may be made hollow, and
connected with the water space of the boiler.
The fuel is fed at the top or at the side at the upper part of the fire-box, and
above the said projection. It falls down the incline fire-bars, and rests upon those
nearly horizontal, where it becomes incandescent, so that the gases generated in the
upper part of the fire-box descend, pass below the projection and through the incan-
descent fuel on the horizontal fire-bars, and are consumed. The fuel is fed forward
by oscillating the bars, as above explained.
A slide or damper is or may be used to prevent the fuel from descending from
the fire-box below the projection when required.
All or part of the fire-box for steam boilers is or may be mad hollow, and filled.
with water, which may be connected with that in the boiler, or used for feeding
the boiler.
My Invention as applied to other furnaces than steam boilers consists in bringing
the fire-box with the inclined and nearly horizontal fire-bars and the solid or hollow
projection close to the pan, parts, flue, or space to be heated; the horizontal fire-bars.
being arranged to project into or under the space or flue to be heated.