IMPROVEMENTS IN THE FURNACES OF STEAM BOILERS
Year: 1878

page_text: LETTERS PATENT to Robert Newton, of Lower Providence Mill, near Keighley,
in the County of York, Engineer, for the Invention of "IMPROVEMENTS IN
THE FURNACES OF STEAM BOILERS."
Sealed the 25th February 1879, and dated the 30th August 1878.
PROVISIONAL SPECIFICATION left by the said Robert Newton at the
Office of the Commissioners of Patents on the 30th August 1878.
ROBERT NEWTON, of Lower Providence Mill, near Keighley, in the County of
York, Engineer. "IMPROVEMENTS IN THE FURNACES OF STEAM BOILERS."
This Invention consists in combining stationary grate bars with reciprocatory
bars, that is, to say, one half of the bars are stationary, and the other half recipro-
catory, the two series being arranged alternately. The upper edges of the bars are
serrated or half diamond or angular shaped projection, so as to cut the slag. The
reciprocatory bars have a very slight rising-and-falling motion imparted to them by
constructing the end support slightly inclined, so that they not only cut the slag,
but clean the space between the bars at the same time. The reciprocatory move-
ment is effected by means of a rocking shaft, having lugs which enter recesses
formed underneath the bars. The rocking shaft may be worked by hand lever or
other convenient means.

page_text: "
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Robert Newton in the Great Seal Patent Office on the 28th February
1879.
ROBERT NEWTON, of Lower Providence Mill, near Keighley, in the County of
York, 'IMPROVEMENTS IN THE FURNACES OF STEAM BOILERS."
"
This Invention consists in combining stationary grate bars with reciprocatory
bars, that is, one half of the bars are, stationary, and the other half reciprocatory,
the two series being arranged alternately. The upper edges of the bars are serrated,
or have half diamond or angular shaped projections, so as to cut the slag. The
reciprocatory bars have a very slight rising-and-falling motion imparted to them by
constructing the end supports slightly inclined, so that they not only cut the slag,
but clear the space between the bars at the same time. The reciprocatory move-
ment is affected by means of a rocking shaft having lugs which enter recesses
formed underneath the bars. The rocking shaft may be worked by hand lever or
other convenient means.
In order that my Invention may be more readily understood, I berein give
reference to the accompanying Sheet of Drawings illustrative thereof.
Fig. 1 is sectional elevation of a boiler furnace; Fig. 2 is plan view of same; and
Fig. 3, front end view.
A and B are the inclined end supports or dead plates, upon which rest the two
series of bars C and D. These bars are serrated, and the series Ctmay have a slight
Fising-and-falling motion imparted to them by the rocking shaft. E) the lugs e of
which enter recesses formed on the under side of the bars. The series of bars D are
kept stationary by the shaft F which enters recesses formed in the parts of this
series of bars. The bars are kept in their proper lateral positions by enlarge-
ments c.
Where the shaft E is rocked by hand lever G or other suitable means, the move-
ment imparted to the bars thereby cuts or breaks up the slag, and clears the spaces
betwixt the bars.
5. Having thus described the nature of my Invention; I would have it understood
that I claim, the combination of stationary and reciprocatory grate bars constructed
and operated, as and for the purpose substantially as herein shewn and described.
Inwitness whereof, I, the said Robert Newton, have hereunto set iny hand and
seal, this Twenty-fifth day of February, in the year of our Lord One thousand
eight hundred and seventy-nine,
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