Improvements in or applicable to the Furnaces of Steam Boilers.
Year: 1895

page_text: Date of Application, 23rd Oct., 1895
Complete Specification Left, 22nd July, 1896-Accepted, 22nd Aug., 1896
PROVISIONAL SPECIFICATION.
Improvements in or applicable to the Furnaces of Steam Boilers.
We GEORGE CONATY of Bearwood Villa, John Street, Smethwick, County of
Stafford, Engineer, and EZEKIEL GRAYSON CONSTANTINE of 32 Victoria Street,
Manchester, Engineer do horeby declare the nature of this invention to be as
follows:-
Our said invention relates to the use iu combination with the firing door of the
furnace of a steam boiler of a baffle plate or grating having two or more deflectors
by means of which the stream of cold air entering the furnace when the firing door
is open is split up and deflected downwards so as to impinge on the burning fuel
and thus to become heated before striking the plates. The object thereof is to
prevent or minimise the violent alternations of temperature to which the plates or
tubes are subject when air is freely admitted to the furnace by opening the door
and also to more effectively control the combustion of the fuel. The deflector is
mounted in slides or on a hinge or hinges so as to permit of ready displacement
when charging the furnace. In some cases the deflector is combined with a door
or doors having apertures for the admission of air, and we may so mount the
separate deflectors as to vary their inclination.
Dated this 22nd day of October 1805.
E. T. WHITELOW, A.M. Inst. C.E.,
70) Deansgate, Manchester, Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in or applicable to the Furnaces of Steam Boilers.
We GEORGE CONATY of Bearwood Villa, John Street, Smethwick, County of
Stafford, Engineer, and EZEKIEL GRAYSON CONSTANTINE of 32 Victoria Street,
Manchester, Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and
ascertained in and by the following statement :-
Our said invention relates to the use in combination with the firing hole or duor of a
steam furnace of a baffle plate or grating having two or more deflectors which split
up and deflect the cold air downwards so as to impinge on the burning fuel and thus
to become heated before striking the plates. The object thereof is to prevent or
minimise the violent alternations of temperature to which the tubes are subject
when air is freely admitted to the furnace by opening the door and also by
more effectively controlling the combustion of the fuel to lessen or prevent the
production of smoke.
In order that our said invention may be more clearly understood we will describe
its application to the furnace of a boiler of the locomotive type with reference to
the accompanying drawings in which
Fig. 1 is a front elevation.

page_text: The grating a baving two or more air passages a¹ is hinged at 6 opposite to the
aperture through which fuel is supplied to the furnace.
oc are the liereinbefore mentioned deflectors which at the inside turn downwards
so as to direct the air on to the surface of the burning fuel (represented by the
dotted line y-y). In some cases in order to more fully distribute the air over the
whole surface of the fuel we prefer to make the 'angle of deflection gradually
increase from the top to the bottom whereby the air tends to take the varying
directions indicated by the arrows.
When it is desired to remove the grating in order to feed the furnace it is simply
pulled over on the hinge b intil it falls by its own gravity and remains suspended
underneath. The hinge b may be equally well placed above or at side of
the firing hole or the grating may be otherwise held in position as will be well
understood,
In the example shown the grating is applied to a furnace having sliding
doors dd which by the links and levers are caused to simultaneously approach
to or recede from each other on the partial rotation of the shaft as will be clearly
understood from the drawing without further explanation. The doors d d when
closed slide in front of the grating a and are notched at g g so as not to be impeded
by the parts projecting outwards from the grating.
Although shown as applied to a particular type of boiler it is to be understood
that the scope of our said 'invention is not limited to such a particular application.
Having now particularly described and ascertained the nature of our said inven-.
tion and in what manner the same is 'to be performed we declare that what we
claim is.-
-
baffle plate or grating a having two or more air passages a' and internal
deflectors for directing the entering air downwards. on to the surface of the
burning fuel substantially as and for the purpose set forth.
Dated this 20th day of July 1896.
E. T. WHITELOW, A.M. Inst. C.E.,
70 Deansgate, Manchester, Agent for the Applicants.