Improvements in Furnace or Grate Bars.
Year: 1898

page_text: Date of Application, 25th May, 1898
Complete Specification Left. 25th July, 1898-Accepted. 24th Sept.. 1898
PROVISIONAL SPECIFICATION.
Improvements in Furnace or Grate Bars.
I, PETER JENSEN, of 77, Chancery Lane, London, Chartered Patent Agent, do
hereby declare the nature of this invention (a communication to me from abroad
by Pierre Malvezin, of Bordeaux-Cauderan, Gironde, France, Engineer), to be
as follows:-
-
This invention relates to improvements in grate bars for furnaces of all kinds.
In order to obtain an extended conveyance of combustible air through the grate,
the bars are provided with lateral projections of pyramidal form or decreasing
step by step in width. The said projections are arranged in such a manner that
the projections of one bar enter partly into the spaces between two projections of
the adjacent bar.
The slits or spaces between these bars thus together show in plan a zig-zag
course.
Improvements in Furnace or Grate Bars.
I, PETER JENSEN, of 77, Chancery Lane, London, Chartered Patent Agent, do
hereby declare the nature of this invention (a communication to me from abroad
by Pierre Malvezin, of 24, Rue du Chalet, Bordeaux-Cauderan, Gironde, France,
Engineer,) 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 grate bars for furnaces of all kinds
and it is the purpose of it to produce a lively supply of air from as many sides
as possible through the interstices of the grate. To this end the grate-bars are
provided with lateral projections of pyramidal form decreasing step by step in
width in such a manner that on the surface of the grate the interstices have a
zig-zag form, the projections of one bar entering partly into the spaces between
two projections of the adjacent bar.
The invention is represented in the accompanying drawing, in which
Figs. 1 and 2 are perspective views of a grate-bar.
Fig. 3 is a plan of the grate on a smaller scale,
Fig. 4 is a section through eight bars on the line -r of Fig. 3 but on a larger
مامی

page_text: a.
As will be seen, the bar is provided with lateral pyramidal projections
The
upper side of these projections, which represent a combination of several pyramids,
shows a zig-zag stepped form. The projections of one bar are arranged to enter
between the projections of the adjacent bar, so that the surface of the grate shows
zig-zag stepped interstices. The width of the interstices is determined by
shoulders b fitted on the ends of the bars.
It is obvious that by these means the air is heated and distributed in a very
efficient manner when passing through the grate to the combustible.
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:-
A fire-grate; whose bars are provided with lateral pyramidal stepped projections
(a) arranged to enter between corresponding projections of the adjacent bar, so
that the surface of the grate shows zig-zag or stepped interstices.
1000
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.