Improvements in Fire Bars for Steam Boiler or other Furnaces
Year: 1894

page_text: Date of Application, 1st Dec., 1894
Complete Specification Left, 2nd Sept., 1595-Accepted, 19th Oct., 1895
PROVISIONAL SPECIFICATION.
Improvements in Fire Bars for Steam Boiler or other Furnaces.
I, RICHARD LEWIS Gadlys Engineering Works, Aberdare Glamorganshire
Ironfounder do hereby declare the nature of this invention to be as follows:-
Improvements in furnace fire bars for furnaces of steam boiler or other furnaces
where economy of fuel is necessary. The bar cousists of two longitudinal sides
placed at any distance parallel one with the other, and between these two parallel
sides, diagonal bars are placed at varying distances to suit quality of fuel used,
slightly made, giving freer circulation of current draught, consequently increasing
the current, and preserving the bar from burning down through the keen draught,
burning the fuel cleaner with very little ash falling through, can be utilized for
ordinary boilers with forced draught or otherwise.
8th day of November 1891.
RICHARD LEWIS,
Gadlys Engineering Works, Aberdare, Glamorganshire.
COMPLETE SPECIFICATION.
Improvements in Fire Bars for Steam Boiler or other Furnaces.
I RICHARD LEWIS of Gadlys Engineering Works Aberdare Glamorganshire,
Ironfounder, 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 :-
My invention has for its object improvements in fire bars for steam boiler and
other purposes such as furnaces whereby the current is increased the fuel burns
cleaner with the result that a great economy in fuel is effected with very little ash.
My bars are applicable to ordinary boilers with forced draught or otherwise and
by reason of the thorough distribution of the air the life of the bar is considerably
extended.
In order that my invention may be clearly understood and more easily carried
into practice I have appended hereunto a sheet of drawings upon which I have
fully illustrated the nature of my said improvements.
Figure 1 is a plan of my bar.
Figure 2 is a side elevation of half of the bar.
Figure 3 is a longitudinal section through half of the bar.
Figure 4 is a cross section through Figure
Figure 5 is an end elevation of the bar.
on the line 1-2.
In carrying my invention into effect I form my bar with two sides A and A' and
intermediate bars B which are placed more or less diagonally to the said sides.
These diagonal bars B may be placed at varying distances from each other to suit
the quality and class of fuel to be used and are formed of slight section so as to
give free circulation to the current draught thus preserving the bar from burning
to assist which the said diagonal bars are formed narrower at the bottom b¹ than
at the top b² thus forming the apertures C which are wider at the bottom than at
Along the top
the top so as to assist the passage of the draught through same.

page_text: of each bar I form the hollow or groove which is also continued round the sides
at a and end at a' by which the life of the bar is lengthened. Stiffening ribs a
are provided on the exterior of the sides at A and A' for strengthening the flange
at the same time acting as distance pieces and thus forming apertures between
each complete bar. I may vary the inclination of my diagonal bars B without
departing from my invention and I may also vary the design of the ends a³ and
sides A and A¹ to suit varying requirements to be met with.
Having now particularly described and ascertained the nature of this inven-
tion & in what manner the same is to be performed I declare that what I
claim is :-
1st. The improvements in fire bars for steam boiler or other furnaces substantially
as and for the purpose herein set forth and shewn upon the accompanying drawings.
2nd. A fire bar for furnaces consisting of sides A and A' with intermediate
diagonal bars B substantially as herein set forth and shewn.
Dated this 29th August 1895.
RICHD. LEWIS.