IMPROVEMENTS IN ARRANGEMENTS FOR BURNING HYDROCARBONS OR FLUID FUEL FOR GENERATING STEAM AND OTHER PURPOSES, AND FOR CONSUMING SMOKE AND EXHAUST STEAM, AND RENDERING THE SAME WHOLLY OR PARTLY NOISELESS AND INVISIBLE, APPLICABLE TO TRAMWAY ENGINES AND OTHER PURPOSES
Year: 1878

page_text: PROVISIONAL SPECIFICATION left by George Lowry at the Office of the
Commissioners of Patents on the 23rd March 1878.
GEORGE LOWRY, of Salford, in the County of Lancaster, Engineer and Tool
Maker. "IMPROVEMENTS IN ARRANGEMENTS FOR BURNING HYDROCARBONS OR
FLUID FUEL FOR GENERATING STEAM AND OTHER PURPOSES, AND FOR CONSUMING
SMOKE AND EXHAUST STEAM, AND RENDERING THE SAME WHOLLY OR PARTLY
NOISELESS AND INVISIBLE, APPLICABLE TO TRAMWAY ENGINES AND OTHER
PURPOSES."
I bring the exhaust steam to nozzles, which will form an ejector to draw in air, the
combined steam and air passing forward to a tuyere passing through the fire-bars
at the middle of the furnace (especially in vertical boilers), and extending some
distance above the fuel on the bars. This tuyere is or may be formed of fire-clay
or metal, with numerous small holes through it, and becomes greatly heated by the
furnace, so that the combined steam and air is superheated in passing, and ignites
on issuing from the tuyere, and is partly burned, and the current caused by the
issuing gases is sent up the flue or chimney, and produces a draught that causes
air to pass between the fire-bars to promote the combustion of the fuel.
Instead of the exhaust steam and air being driven forward to the tuyere in a
mixed state the steam may pass on separately, and some of the holes in the tuyere
(those in the centre by preference) may be reserved for and supplied with air.
In some cases the tuyere may be formed in a circle or round the sides of the
furnace or fire-box, or several separate tuyeres may be placed round the sides of the
fire-box or furnace, and may be supplied with exhaust steam and air from a chamber
communicating with all the tuyeres.
In some cases where the flue takes an horizontal direction the tuyere or tuyeres
may discharge in the same direction.
My Invention further consists in combining with the tuyere or tuyers arrange-
ments for burning hydrocarbon oils or other fluid fuel by taking a pipe from the
cistern containing the liquid fuel and conveying it by a small pipe through the
central interior of the steam pipe and centre of the tuyere or tuyeres, so that it will

page_text: be volatilized when discharged, and will ignite and burn with the exhaust steam
and air.
My Invention further consists in burning hydrocarbon or other fluid fuel by
injecting it as finely divided spray into the furnace, having coal or coke, or other
solid fuel burning on fire-bars, by a jet or jets of air or steam, exhaust steam by
preference, when the furnace is used for generating steam for an engine.
The apparatus I prefer to use consists of a pipe or nozzle to bring the fluid fuel,
and another pipe or nozzle acting across the first-named nozzle which brings the air
or steam jet, which crossing the first-named nozzle draws up and drives the fluid
fuel into the furnace in a finely divided state combined with steam and air. This
is or may be also accomplished by an apparatus similar to an injector or ejector, the
oil being in the central nozzle (by preference) with a cone spindle to regulate the
quantity of oil and the steam on the exterior of the central nozzle; or the injector
may be constructed as above described, and with a nozzle for air at the exterior of
the steam nozzle. This application of liquid fuel will be useful in generating steam
rapidly, especially for tramway engines, as it can be readily turned on and off, and
will need but little attention, and thus it would give the driver ready means for
rapidly generating steam for steep inclines and heavy loads from a comparatively
small boiler.