Improvements in Furnace Bars.
Year: 1895

page_text: Date of Application, 2nd Jan., 1895
Complete Specification Left, 2nd Oct., 1895-Accepted, 2nd Nov.,
1895
Improvements in Furnace Bars.
We, FRANK VARTY and THOMAS VARTY, both of Royston Ironworks,
Royston, Cambridgeshire, Engineers, and HARRY SYMNS ROBINSON, of
Melbourn, Cambridgeshire, Tailor, do hereby declare the nature of this invention
to be as follows:-
This bar is constructed with a deep backbone, being rounded off at top. At
each side of the backbone teeth or projections are placed at suitable distances.
The teeth or projections are made and fixed part vertical at top for a portion of
their length, and part oblique or curved from near top to bottom. The object
being to divide and guide the air into furnace, and to cause a forced vertical and
contact draft in the furnace. Between the teeth or projections, flutes are made in
each side of the backbone part vertical and part oblique, to cause the air to
circulate over the top of the backbone, which will tend to keep the bar com-
paratively cool and prevent clinkers adhering to the bar. The teeth or projections
and backbone are all rounded off at top to cause the smallest possible substance
for the clinker to rest upon. If necessary the teeth or projections can be made to
fit in each other or side by side, so that they may be the more readily or quickly
drawn from the furnace, or the teeth of one bar may come opposite the division of
the two teeth.
Dated this 2nd day of January 1894.
FREDERIC PRINCE,
Agent for Applicants.
Improvements in Furnace Bars.
We, FRANK VARTY and THOMAS VARTY, both of Royston Ironworks,
Royston, Cambridgeshire, Engineers, and HARRY SYMNS ROBINSON, of
Melbourn, Cambridgeshire, Tailor, 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 :-
A construction of fire bar according to this invention, has special reference to
the shape of lateral teeth, and will be best understood by reference to the
accompanying drawing, in which :
Figure 1 is a side elevation, and Figure 2 a plan of a fire bar according to our
invention.
Figure 3 is a transverse section taken on the irregular line x, y, of Fig. 2, and
drawn to a larger scale.
Figure 4, is a side elevation of a portion of a fire bar showing a somewhat
modified form or configuration of the lateral teeth of the bar, and Figure 5 is a
similar view showing another modified form of lateral teeth.
Each fire bar is composed of a central web A, from which lateral teeth B,
extend upon both sides. Between these curved lateral teeth air spaces Û, are
formed. The teeth B, as shown by the drawing are first vertical for a portion of

page_text: their length, and part curved and tapered for the remaining portion, terminating
as at B. The top of the central web A, is rounded as shown at D. When the
bars are placed in the furnace, the side of one tooth comes opposite the opening
of two teeth.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed; we would observe that
we are aware that firebars have previously been made with lateral teeth of
different shapes, we therefore make no claim broadly to firebars with lateral teeth,
but what we claim is:
"A firebar constructed with the particular shaped lateral teeth herein before
described and illustrated by the accompanying drawings."
Dated this 2nd day of October 1895.
FREDERIC PRINCE,
37 Cursitor Street, London, E.C., Agent for Applicants.