IMPROVEMENTS IN FIRE BARS
Year: 1884

page_text: I THOMAS EDWARD CADDY of N° 1 Fountain Terrace, Alfreton Road Nottingham
Moulder in the County and Town of Nottingham do hereby declare the nature of
my Invention for IMPROVEMENTS IN FIRE BARS to be as follows:-
An air tube chilled faced fire bar and made of various lengths and sizes to suit all
kinds of boilers and furnaces, and by a special application of moulding the whole
of the faces are chilled thereby hardened and made very durable and strong. The
improved method of moulding the bars consists of the metal running round the
wrought iron tube thereby causing the chill which will be enough to case-harden
the bar. There will be a further improvement by the faces of the bars being cast
upon metal plates thus causing additional hardening of the faces of the bars by
this process. Figure 1 is a longitudinal elevation shewing the tube bent at front
end of bar which hangs below the front bar bearer which has corresponding slots
cast in to admit the bend to pass below bar bearer. Figure 2 is a transverse
section of fire bar through centre shewing wrought iron tube.
Figure 3 is a plan shewing two bars together, I claim also that the air passing
through the wrought iron tubes keep the bar cool, and the air passing over the fire
at the back end of the fire bar bearer will cause combustion of the carbons thereby
burning the smoke and economise the amount of fuel to a great extent. The dead
plate of back end of furnace on which the bars rest will have slot holes cast in to
allow the dust to fall through thus preventing choking the tubes through the bars.
Dated this Seventeenth day of July One thousand eight hundred and eighty
four

page_text: I, THOMAS EDWARD CADDY of N° 1 Fountain Terrace Alfreton Road Nottingham
Moulder, in the County Town of Nottingham do hereby declare the nature of my
Invention for IMPROVEMENTS IN FIRE BARS and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
An air tubular chilled faced fire bar and made of various lengths and sizes to
suit all kinds of boilers furnaces and fire places by a special application of moulding
the bars face down, the whole of the faces are chilled thereby hardened and made
very durable and strong. The method of moulding the bars consists of the metal
running round the wrought iron tube thereby causing the chill which will harden
them. There will be a further improvement by the faces of the bars being cast
upon metal plates, thus causing additional case hardening of the faces of the bars.
The bar Fig. 1 is a longitudinal elevation shewing the tube bent at front end of
bar which hangs below the front bar bearer which has corresponding slot holes
cast in to admit the bend to pass below bar bearer. I also make these bars without
the bend at end, and further claim to cast the bars with one or more wrought iron
tubes and where two or more lengths are required to form a complete fire bar the
tubes will stand one inch or more out from end of the bar and enter into a cavity
at end of the continuing bar or bars to a corresponding depth for connecting the
air tubes and conducting the air from one bar to another. Fig. 2 is a transverse
section of fire bar through centre shewing wrought iron tube. Fig. 3 is a plan
shewing two bars together. I also claim that the air passing through the wrought
iron tubes keeps the bar cool and by passing through the tubes becomes considerably
heated which prevents unequal expansion and contraction of the boiler plates,
which is caused by the cold air passing over the fire. The air passing through the
bars at the back end of the fire bar bearer, will cause combustion of the carbons
thereby burning the smoke and economise the amount of fuel to a great extent.
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
1st Fire bars cast round one or more tubes and having their faces chilled
substantially as herein described and illustrated in the Drawings.
2nd Heating air for consuming smoke by passing it through the tubes in the fire
bars substantially as described.
Dated this Twenty-first day of August One thousand eight hundred and.
eighty four.