Year: 1886

page_text: Date of Application, 3rd Apr., 1886.
Complete Left, 3rd Jan., 1887.
Complete Accepted, 4th Feb., 1887.
I JOHN MADDOCK of Oaken Gates in the county of Salop Nail Manufacturer do
hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in what are generally termed fuel" econo-
misers," that is, gratings cast more or less ornamental which are placed inside the
ordinary fire grate immediately behind the fire bars, and whose perforations or
openings are somewhat smaller or crosswise arranged to those of the bars themselves
thereby preventing the undue waste or escape of unburnt cinders from the grate, and
has for its primary object the formation thereon of feet or their equivalents after the
following manner :-
In order to better explain this my invention I will briefly describe one form of
economiser, and how it may be applied thereto. A skeleton shaped casting is made
somewhat of a parallelogram form, its length suiting the width of the fire grate, and
of any desirable width (or height), which would generally about equal the depth of
the fire grate ordinary bars; the metal being so disposed, as that there is a continuity
in a line, or nearly so, along its upper edge from end to end, and also a continuity of
metal in a line, or nearly so, along its bottom edge from end to end.
Between this upper and lower bar or strip of metal, the metal is so disposed as to
form perforations or openings, being generally formed by upright light bars, and
every alternate bar secured to its adjoining bar, for the purpose of giving strength,
by a light cross bar.
Hitherto the metal at the bottom of the economiser rests upon the bottom of the
fire grate, and to this there are several objections, hence, we cast or form thereon feet
or their equivalents by which means it is raised to any suitable height from the said
bottom of the fire grate, and thus leaving an horizontal space or opening at the
hottom. By these means the fire grate will be kept in a much more neat and clean
condition, and by affording this better convenience to remove the accumulated burnt

page_text: D
ashes from the lower part of the fire grate, the fire will burn much more brightly and
pleasant. These feet may be formed in several ways, as that they may be attached
thereto, or may be formed by the extension of a number of the upright bars, and
may be formed of various shapes to suit pleasure or convenience. As these econo-
inišers have to be bent or formed more or less, after casting, I corrugate, scoop, or
scollop the horizontal bars of metal in order to facilitate this process of bending or
forming, to suit the fire grate, which reduces their liability to fracture, and offers less
resistance to the said bending or forming.
These my improvements would be applicable to all shapes of "economisers" of this
class.
CHARLES T. POWELL,
Agent for the Applicant,

page_text: COMPLETE SPECIFICATION.
Improvements in Fire Grate Fuel Economisers.
[JOHN MADDOCK of Oaken Gates in the county of Salop Nail Manufacturer, 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:
This invention relates to improvements in what are generally termed fire grate fuel
economisers, that is, of malleable or ordinary cast iron or steel gratings made more or
less ornamental, which are placed inside the ordinary fire grate, immediately behind
the fire grate bars, and in front of the fire, and having perforations or openings
formed thereon which are somewhat smaller in size than the width or opening of the
fire grate bars, and generally arranged in their lengthways to cross the said fire grate
lars; thus preventing the undue waste or escape of unburnt cinders from the grate,
and has for its primary object the forming thereon of feet or their equivalents after
the manner herein setforth.
In order to describe and explain this my invention more clearly I have appended
hereunto, an illustrative sheet of drawings whereon are figures and letters of
reference, like letters referring throughout to the same thing or part.
Fig. 1 shews a front elevation of one form of "economiser
improvements shewn thereon.
Fig. 2, is a sectional elevation of Fig. 1, upon line-A—B.
"
Fig. 3. is a part plan, and sectional plan of Fig. 1, upon line C. D.
with these my
a, is a skeleton shaped casting, somewhat of a parallelogramic form, its length
being made to suit the width of the fire grate, and of any desirable width (or height)
which would generally be about equal to the depth of the fire grate bars, the metal
being so disposed of as that there is a continuous line of it, or nearly so, along its
upper edge . from end to end, and also a similar continuity of metal in a line or
nearly so along its bottom edge from end to end at c.
Between this upper and lower bar or strip of metal, the metal is formed into
perforations or openings d, by means of the upright light bars e, & every alternate
connecting bar f, these latter being principally for the purpose of giving strength and
rigidity to the article.
Hitherto the lower bare has been made to rest upon the bottom of the grate, and
to this there are several objections, as it is difficult to remove the burnt ashes which
lie at the bottom of the fire, the accumulation of which presents a very untidy
appearance, and further prevents the fire burning briskly.
To meet these difficulties I cast or form upon these economisers, feet or supports,
so as to raise the bar or line of metal e to any suitable height from the bottom of the
grate, as shewn at g, Figs. 1 to 6. By reason of these feet g, it will be seen, there is
an horizontal space or spaces h, formed between the lower bare and the bottom of
the grate, this latter being represented by the dotted line i,

page_text: These spaces h, afford a very ready means of removing the accumulated burnt
ashes from the lower part of the fire grate, thereby enabling the grate to be kept in a
much more neat and clean condition, and which will further cause the fire to burn
more brightly and pleasant.
These feet g, may be formed in several ways, as that they may be attached thereto
by rivet or screws, for instance, similar as shewn in dotted lines at j, Fig. 1, where the
foot may be an ornamental or polished foot of any suitable shape and screwed or
rivetted on to the bar c; the number, and form of these feet being in each case
according to design, pleasure or convenience, generally however I prefer to make
them as shewn upon the drawings. (in full).
Upon the drawings Fig. 3, I have shewn the "economiser" as being straight" but
inasmuch as the shape of the fire grate bars vary in different grates, provide upon
the inside of the casting scollops, or curved formations at 1, Fig. 3, which facilitates
the bending or curving of the economisers, as they may require more or less of such-
bending or curving after being cast, lessening also very much their liability to fracture
during such operation.
These my improvements would be applicable to all shapes of economisers of this
kind and for the purposes herein setforth, as for instanco, as shown in Figs. 4, 5, & 6.
Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed I declare that what I claim is —
1st. The improvements in fire grate fuel economisers as herein described, and
illustrated, that is to say, the providing such economisers, with feet or their equivalents
by which a horizontal space or spaces h, is formed, as and for the purposes herein
setforth.
2nd. The forming of scollops, or concave surfaces upon the interior of the bar c,
as and for the purposes herein setforth.
CHARLES T. POWELL,
.Applicant's Agent.