Improvements in Fire Grates.
Year: 1896

page_text: "
Date of Application, 31st Dec., 1896-Accepted, 27th Feb., 1897
COMPLETE SPECIFICATION.
1
Improvements in Fire Grates.
21 1.
:
JOHN DANIEL WOOD, Euhurst, Routh Road, Wandsworth Common,.
London, S.W., Surveyor 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 a grid or grate which may be used either in a fire grate,.
stovė, cooking range, furnace or the like,or on.a flat surface such. as a hearthstone
and has for its object to enable the air admitted to the inder side of the glowing
fuel supported on said grate to become very highly heated before reaching the
fuel. By this means I am able to secure almost perfect combustion and adapt
ordinary firegrates for burning coke, anthracite and other hard coal, though softer
coal and other fuel may be used. The invention will be understood by reference.
to the accompanying drawings
Like letters indicate like parts.
%
Figure 1 shows plan of the grate and Figure 2 shows elevation of front bar of
grate. The grate is composed of two transverse bars A one at the front and the
other at the back, connected together by forwardly and backwardly extending
bars B, hereinafter called fore and aft bars. Upon such of these fore and aft bars.
as may be selected, one or more upwardly extending projections (hereinafter called
lugs) C Figure 2, either solid or perforated from frout to back, are formed at equal
or varying intervals as shown by the dotted lines in Figure 1, so that each pair of
fore and aft bars with their lugs form an air chamber or passage from the front
into the body of the fire. These lugs may vary in section as desired, and may be-
perpendicular Figures 1 and 2 C, diagonal C or curved C, and they may gradually
increase in height from front to back or from back to front, or they may increase
in height towards the centre and decrease in height again towards the back. In
Figure 3 two of the fore and aft bars are shaped so as to widen at the centre, aud
the lugs (shown by dotted lines) may increase in height towards the centre and.
decrease in height again towards the back or they may be of uniform height. In.
Figures 4 and 5 a grate with one pair of bars and lugs only is shown (the lugs
indicated by dotted lines) and in Figure 6.a perspective view of a grate with only
one bar with lugs is shown. The devices shown in Figures 1, 2 and 3 are each
applicable for use either in place of an ordinary grate or as a false bottom above.
such grate. The devices 4, 5 and 6. are for use as false 'bottoms over existing
grates. All may be provided with legs as shown at D Figure 1 at each corner for
supporting them at the required height above the existing grate. In each case the
legs may be dispensed with. The before described grates may be modified in
many ways without departing from the spirit of the invention, for example the lugs.
may be made in various shapes and either solid. or perforated from front to back,
and may be connected together by stays struts or stiffening pieces E which may be..
partly circular in section, or the fore and aft bars with or without Ings may be
made separately and let into position in the trausverse bars by means of slots, or
the air passages may increase in width from front to back or from back to front,.
and one, two or more nir passages may be formed on each grate & further the air
passages in Figures 3 & 5 need not be extended the full depth as shown.
The-

page_text: grates may be circular or of any required form and they may be constructed of
metal, fire-clay, asbestos or other suitable material or a combination of such
materials.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what. I
claim is
(1.) A projection or lug either solid or with perforations from front to back, as
and for the purpose described.
(2) A fire bar with solid. or perforated lugs at intervals, substantially as and
for the purpose described.
(3.) In a fire grate the combination of such fire bars with solid or perforated
lugs, substantially as and for the purpose described.
(4.) A fire grate having one or more series of combinations of fire bars and solid
or perforated lugs, substantially as and for the purpose described.
(5.) A complete fire grate substantially as described and illustrated in Figures 1,
2, 3, 4, 5 or 6 of the accompanying drawings.
J. D. WOOD.