IMPROVEMENTS IN FURNACES OF STEAM AND OTHER BOILERS,
Year: 1874

page_text: LETTERS PATENT to Robert Newton, of Keighley, in the County of
York, Engineer, for the Invention of "IMPROVEMENTS IN FURNACES
OF STEAM AND OTHER BOILERS,."
PROVISIONAL SPECIFICATION left by the said Robert Newton at the
Office of the Commissioners of Patents, with his Petition, on the
6th June 1874.
I, ROBERT NEWTON, of Keighley, in the County of York, Engineer,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN FURNACES OF STEAM AND OTHER BOILERS," to be as follows:-
This Invention has for its object the construction of furnaces, con-
sisting of a combination of tubular waterway bars and solid rocking bars,
and of improvements in the connecting and securing the said tubular
water bars with the water casings or compartments used therewith; and
means are provided for cleansing the interior of the tubular bars.
*

page_text: I employ alternately a tubular waterway bar and a solid rocking bar,
the latter being rocked by hand lever or other means.
The tubular bars
are connected with water casings, one at each end of the said bars.
These extend across the furnace, and are fed from the lower portion of
the boilers or from the pump or (economizer). The ends of these
tubular waterway bars are received in holes formed in the water casings.
The interior ends of the tubular bars are slightly recessed or counter-
sunk for receipt of a ferrel or ring, which on being driven home or
forced up slightly expands the ends of the tubes, and so securely fixes.
the said tubes. In the outer portion of the casing and immediately
opposite the end of each tube is a plug, which may be removed, thus
leaving a passage way for brush or scraper to the interior of the tubes
for cleansing

page_text: 66
water boxes or casings are either fed from the pump or economizer,"
through the pipe K or from the bottom of the boiler through the pipes L.
and L, which are provided with clack valves M, or may be used:
without.
Each of the boxes A may be divided about the centre to ensure a
complete circulation of the water, and they may also be connected by
the pipe N, the water finally passing out through the pipe P into the
boiler.
Figs. 3 and 4 are details of the water box and bars and rocking
apparatus. The water bars are tapered at the ends and countersunk.or
recessed. The tapered ends are inserted into holes in the water boxes
or casings, and a ferrule is then forced into the recessed ends, expanding
the same so as completely to fill the holes, by which means they are
securely fixed in the boxes or casings. The tubular bars are curved, as
shewn, to allow of expansion or contraction. In the outer portion of
the casing and immediately opposite the end of each tube is a plug R,
which may be removed when required, thus leaving a passage or way for
the introduction of a brush or scraper to the interior of the tubes for
cleansing them.
Although I have herein described and shewn the tubular and the solid
bars as being employed alternately it may in some cases be found
desirable to vary the arrangement, using more or less of either the
tubular or the solid bars, that is to say, two tubular bars may be placed
together, then a solid rocking bar, then other two tubular and a rocking
bar, and so on, or vice versa.
-
Having thus described the nature of the said Invention, and shewn by
Drawings and description in what manner the same is to be performed
or put into practical operation, I would have it understood that I do not
confine myself to any precise details, but what I claim is,―
Firstly. The constructing of furnaces with a combination of tubular
waterway bars and solid rocking bars, in manner substantially as shewn
and described.
Secondly. The means or method of securing the tubular bars to the

page_text: boxes or casings and the means provided for cleansing the interior
thereof, as shewn by Drawings and described herein.
=
In witness whereof, I, the said Robert Newton, have hereunto
set my hand and seal, this Third day of December, in the
year of our Lord One thousand eight hundred and seventy-
four.
Witness,
J. W. TASKER,
Patent Agent,
Halifax and Bradford.
ROBERT NEWTON. (L.S.)