Fire Grate Bars with Round Tops.
Year: 1894

page_text: Date of Application, 2nd Mar., 1894
Complete Specification Left, 29th Dec., 1894-4ccepted, 23rd Feb., 1895
PROVISIONAL SPECIFICATION.
Fire Grate Bars with Round Tops.
I, GUILLERMO PABLO UHLENBROICH, 21 Golden Square London W. do
hereby declare the nature of this invention to be as follows:-
This invention relates to an improvement in fire grate bars.
Through prolonged use square or polygonal fire bars are burnt at the top until
the latter become rounded by wear and do not allow the ashes to fall through.
But if the tops are made round from the front to the inside by casting bodies or
appendages of conical shape upon a weak support so that their base should be
upwards, this defect is fully remedied and the durability of the grate is greatly
increased.
In this construction moreover due attention has been paid to the fact that all
fire bars of one set can be cast after only one pattern, and that by simply turning
the bar round (with the front end towards the rear) the tops are relatively
transposed that is to say a top is always next to the adjoining gap or interval.
This is effected by casting both the distance ribs at one end and the grooves at the
other end, or by means of suitable projections formed during the process of
manufacture.
Dated this 2nd of March 1894.
GUILLERMO PABLO UHLENBROICH.
COMPLETE SPECIFICATION.
Fire Grate Bars with Round Tops.
GUILLERMO PABLO UHLENBROICH late of 21 Golden Square W. now
of 273 Cold Harbour Lane Brixton S.W. in the County of London, 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 relates to an improved construction of fire bars for furnaces
generally and more particularly for the furnaces of steam and other boilers and
bas for its object to promote combustion and prevent the undue wear of the bars.
The fire bars of square or polygonal shape hitherto used were gradually burnt
at the top through prolonged use until they become jagged by wear and ceased to
allow the ashes to fall between them into the ash pit thus impeding the free
passage of air and rendering combustion incomplete.
According to my invention 1 form the fire bars of a central web whereon are
cast astride of the same, a number of conical pieces or projections the apices of
which are directed downwardly while the bases which are circular form the top
of the bars and are disposed at regular short intervals one from the other.
In connecting such fire bars for the purpose of forming a grate they are
arranged one in front of the other in such a manner that each round base of one
of the intermediate bars is placed between two adjoining bases of the bar on either
side thereof and hence opposite the interval which separates these two rows of
adjoining bases.

page_text: In the accompanying drawings wherein like letters of reference indicate
corresponding parts
:
Fig. 1. is a front elevation of my improved fire bar.
Fig. 2. is a plan showing the means of connecting together a number of my
improved fire bars and
Fig. 3. is a section on line x x of Fig. 1.
This improved fire bar consists of a central web a whereupon are cast astride of
the same (Fig. 3.) a number of conical pieces i arranged at regular short intervals
and the apices of which point downwardly while the bases which are of circular
shape are uppermost these short intervals forming the openings through which the
air passes for promoting combustion. This bar is provided with a rim r at its
upper extremity with a rib c on one side and another rib c' on the other side and
with a triangular projection the whole being arranged in such a manner that the
bars being cast after one pattern their webs a have to be alternately reversed to
form a grate that is to say when a number of bars are connected together the
projections 6 various bars are situated alternately on the right and on the left.
hand side of the grate so that each base Fig. 2. of one bar is placed between
two adjoining bases of the bar on either side thereof and hence opposite the
openings of the same.
b
.
The projections & may be as shown in Fig. 1. at the same end of the bar as the
ribs cc or they may be formed at the other end or dispensed with altogether.
The arrangement of bars shown in Fig. 2. is such that there is always an
unimpeded passage of the air, thus rendering the combustion as complete as
possible.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. The improved construction of fire bar consisting of a web upon which are cast
at regular intervals a number of conical pieces the circular bases of which are
uppermost while their summits are lowermost and which is provided with a rib on
each side substantially as herein described and shown and for the purpose set
forth.
2. The mode of connecting fire bars of the kind above claimed for the purpose
of applying them in the construction of grates whereby each circular base of one
of the intermediate bars is situated between the two adjoining bases of the bars on
either side thereof and hence opposite the openings between the latter bases
substantially as herein described and shown and for the purpose set forth.
Dated this 29th day of December 1894.
GUILLERMO PABLO UHLENBROICH.