Improvements in Furnace-grates.
Year: 1894

page_text: Date of Application, 1st Dec., 1894
plete Specification Left, 1st Oct., 1895-Accepted, 2nd Nov., 1895
PROVISIONAL SPECIFICATION.
Improvements in Furnace-grates.
We, HENRY WARRINGTON and HENRY JAMES WARRINGTON, of Berry Hill
Works, Stoke-on-Trent, in the County of Stafford, Iron Manufacturers, do hereby
declare the nature of this invention to be as follows:-
This invention relates to grates adapted for use with furnaces applicable to a
variety of purposes, and has for its object the provision of means for enabling the
cleansing of the grate-bars, particularly those portions on which the clinkers are
apt to accumulate, to be effected with facility and expedition.
A furnace-grate constructed according to our improved method comprises two
series of bars; one being horizontal or approximately horizontal, whilst the other
set is placed at an inclination and is so arranged that the lower extremities of the
bars terminate immediately above or interlace with the bars pertaining to the
horizontal series. The inclined bars are pivoted towards their upper and outer
ends upon a rocking shaft, by the rotation of which their lower extremities can be
raised a sufficient height, clear of the surface of the horizontal section of the grate,
to admit of the introduction and use of the ordinary stoking tools.
Other means may be employed for raising the lower portion of the inclined
section of the grate.
For instance, the bars constituting the same may be pivoted
at their upper extremities, and their lower extremities raised by lifting a cross bar
whereon the bars rest.
It will be understood that the fuel is fed at the upper part of the inclined portion
of the grate, and gradually passes downwards to the horizontal portion; the
surfaces of both sections of the grate being thus kept covered, and the whole
rendered accessible to the air and operative.
For the inclined portion of the grate, the upper faces of the bars may be grooved
longitudinally, and these bars may be joined together in groups, means being
provided for lifting or working each group independently.
Dated the 1st day of December 1894.
We, HENRY WARRINGTON and HENRY JAMES WARRINGTON, of Berry Hill
Works, Stoke-on-Trent, in the County of Stattord, Iron Manufacturers, 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 aml by the following
statement:-
This invention relates to grates adapted for use with furnaces applicable to a
variety of purposes, and has for its object the provision of means for enabling the
cleansing of the grate-bars, particularly those portions on which the clinkers are
apt to accumulate, to be effected with facility and expedition.

page_text: In the accompanying drawings, which illustrate a mode of carrying out our
invention, Fig. I is a longitudinal section, Fig. 2 a corresponding plan and Fig. 3 a
front elevation of a furnace-grate embodying our improvements. Fig. 1 shows in
section an alternative mode of constructing and mounting the outer ends of the
inclined grate-bars.
The furnace-grate comprises two series of bars A and B; the former horizontal
or approximately so and resting on hearers a, whilst the latter are arranged at an
inclination and have their lower extremities 6 terminating immediately above the
bars A. Or, if desired, the bars B may interlace with the bars A. The inclined
bars B are supported, at a convenient distance from their lower extremities, by a
bearer b', and are pivoted towards their upper and outer ends upon a shaft or bar C,
which may be fixed or may be made to rock. If the shaft C be a rocking shaft, it
may be rectangular in cross-section, as shown in Fig. 14; the bars B being suitably
formed for engaging with the said shaft. On rotating this shaft, the lower
extremities 6 of the bars B can be raised a sufficient height, clear of the surface of
the horizontal bars A, to admit of the introduction and use of the ordinary stoking
tool.
The upper faces of the bars B are preferably grooved longitudinally, and these
bars may be joined together in groups. Five such groups are shown in Figs. 2
and 3, each group being capable of independent movement. In the drawings, we
have shown an additional bar D, over which a suitable lever (indicated in dotted
lines) may be placed when it is desired to raise the bars B, the bearer D serving
as a fulcrum. The lifting lever may be so formed as to act upon one group at a
time or upon two or more groups simultaneously.
Means other than those above described may be employed for raising the lower
portion of the inclined grate surface. For instance, the bars B may be pivoted
at C, and their lower extremities braised by lifting a cross bar whercon the said
bars rest; but as these and other means for accomplishing the object in view will
be obvious to anyone familiar with the subject, we have not considered it necessary
to illustrate such variations.
The fuel is fed through the opening E, to the upper part of the inclined portion B
of the grate and passes thence to the horizontal portion A, both the horizontal and
inclined portions of the grate surface being thus kept covered whilst the whole is
accessible to the air and operative.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed, we claim :-
1. The improved method of constructing furnace-grates, substantially as herein
described and whereby the operation of cleansing the grate-bars is facilitated.
2. The improved construction of furmce-prati, substantially as in rin described,
and compai ing two series of grate-bars, the one horizontal and the o.her inclined;
the inclined bars having their inner extremities terminating immediately above, or
interlacing with, the bars of the horizontal series; the inclined bars being, more-
over, cable of portaking either individually or collectively of a vibratory movement
about their outer extremities for the purpose of rendering the horizontal grate
accessible for cleansing.
3. In a furnace-grate, the combination with a horizontal or approximately
horizontal grate surface, of an inclined grate surface the bars of which are capable
of being vibrated about their outer extremities, substantially as and for the purpose
set forth.
Dated this 27th day of September 1895
To the Applicants,
G. G. M. HARDINGHAM,
191, Fleet Street, London, EC., Chartered Patent Agent.