Improvements in Furnace Bars.
Year: 1893

page_text: Date of Application, 11th Apr., 1893
Complete Specification Left, 28th Dec., 1893-Accepted, 3rd Feb., 1894
Improvements in Furnace Bars.
A communication from abroad by JOACHIM RIVET, of 30, Boulevard Magenta,
Paris, France.
I, GEORGE CLEMENT DOWNING, of 8 Quality Court, London W.C. Patent
Agent do hereby declare the nature of my said invention to be as follows:-
The object of my invention is to manufacture furnace bars in an improved
manner.
4
My improved furnace bars are formed with a number of blocks, the upper parts
of which are rectangular, and the lower parts pyramidal. A number of these blocks,
spaced at suitable distances apart, with end supports, together form one bar; the
blocks being united together by intermediate angular webs; the pyramidal blocks
and intermediate webs terminating below at one level.
I form and place the bars so that the upper rectangular blocks alternate with the
spaces in contiguous bars.
I also sometimes form the alternate bars of unequal depths.
Another modification consists in forming all the bars of uniform depth, and casting
the webs diagonally, alternately on one side and on the other, so as to induce diagonal
and cross currents of air upwards between the bars.
By the use of my improved fire bars, free access of the air to the fuel is obtained.
Also the access of the air to the surfaces of the pyramids and webs tends to the
preservation of the bars, and facilitates the operations of the stokér in clearing
the bars.
Dated 114h Al 1000
GEORGE C. DOWNING.
Improvements in Furnace Bars.
A communication from abroad by JOACHIM RIVET, of 30, Boulevard Magenta,
Paris, France.
I, GEORGE CLEMENT DOWNING, of 8 Quality Court, London W.C. Patent
Agent, do hereby declare the nature of my said invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement :-
The object of my invention is to manufacture furnace bars in an improved
manner.
My improved furnace bars are formed with a number of blocks, the upper parts
of which are rectangular, and the lower parts pyramidal. A number of these blocks,
spaced at suitable distances apart, with end supports, together form one bar; the
blocks being united together by intermediate angular webs; the pyramidal blocks
and intermediate webs terminating below at one level.
I form and place the bars so that the upper rectangular blocks alternate with the
spaces in contiguous bars.
I also sometimes form the alternate bars of unequal depths.

page_text: Another modification consists in forming all the bars of uniform depth, and casting
the webs diagonally, alternately on one side and on the other, so as to induce
diagonal and cross currents of air upwards between the bars.
By the use of my improved fire bars, free access of the air to the fuel is obtained.
Also the access of the air to the surfaces of the pyramids and webs tends to the
preservation of the bars, and facilitates the operations of the stoker in clearing
the bars.
1717....
And in order that this invention may be particularly described and ascertained,
reference is hereby made to the accompanying drawings, in which similar letters of
reference indicate corresponding parts.
Fig is an elevation of a pair of my improved furnace bars;
Fig. 2 is a plan view of the same;
Fig. 3 is a section on the line 1-2 of Fig. 1; and
Fig. 4 is a view in perspective.
Fig. 5 is an elevation of a modification of my invention;
Fig. 6 is a plan view of the same;
Fig. 7 is a section on the line 3-4 of Fig. 5; and
Fig. 8 is a perspective view.
a a are the blocks, spaced at suitable distances apart and connected together by
webs bb, supports c c being cast or otherwise formed at each end.
In Figs. 1, 2, 3 and 4 the blocks are shown pyramidal and the alternate bars of
unequal depths; the blocks are placed in the position shown, so that the blocks
alternate with the spaces in contiguous bars.
In the modification shown in Figs. 5, 6, 7 and 8 the bars are formed of uniform
depth. The blocks a a are formed with their upper parts rectangular, and the
lower parts pyramidal and connected together by intermediate webs bb. The webs
are cast or otherwise formed diagonally, alternately on one side and on the other,
as shown in Fig. 7, so as to induce diagonal and cross currents of air upwards
between the bars.
Having now particularly described and ascertained the nature of the inven
tion, and in what manner the same is to be performed, I declare that what. I.
claim is :
1. Furnace bars, formed of a number of pyramidal blocks, connected by webs at
suitable distances apart and fitted with end supports, the alternate bars being
formed of unequal depth, substantially as herein before described and illustrated by
Figs. 1, 2, 3, and 4 of the drawings.
2. Furnace bars formed of a number of blocks (the upper parts of which are
rectangular and the lower parts pyramidal), connected by diagonal webs, all the
bars being of uniform depth, substantially as hereinbefore described and illustrated
by Figs. 5, 6, 7 and 8 of the drawings.
3. The improvements in furnace bars, substantially as described and illustrated
by the drawings.
Dated 28th December 1893.
GEORGE C. DOWNING.