IMPROVE- MENTS IN FIRE-BARS
Year: 1870

page_text: LETTERS PATENT to William Batchelor, of Winchester, in the County
of lants, Iron and Brass Founder, for the Invention of "IMPROVE-
MENTS IN FIRE-BARS."
Scaled the 18th October 1870, and dated the 20th April 1870.
PROVISIONAL SPECIFICATION left by the said William Batchelor at
the Office of the Commissioners of Patents, with his Petition, on
the 20th April 1870.
I, WILLIAM BATCHELOR, of Winchester, in the County of Hants,
Iron and Brass Founder, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN FIRE-BARS," to be as follows:-
Heretofore fire-bars have been made in one piece.
-
Now the object of my Invention is to construct fire-bars in such a way
that the upper part which is more directly exposed to the heat may be
replaced when burnt away or unfit for use, while the other or lower part
may last and be available for a very much longer time. The upper and
lower part are dovetailed or otherwise suitably joined together by pro-

page_text: jections on one fitting into corresponding cavities on the other in such
a way that the fit is quite loose and easy when the bar is cold, but
sufficiently tight when the bars are hot to prevent warping or other
inconveniences, the upper part expanding to a greater extent than the
lower. The under part where it is joined to the upper part may be
scolloped, cut out, notched, or perforated for the air to pass right
through. The lower part may be hollow or in two parts or sides with a
space between.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Batchelor in the Great Seal Patent Office
on the 19th October 1870.
J
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
BATCHELOR, of Winchester, in the County of Hants, Iron and Brass
Founder, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twentieth day of April, in the year of
our Lord One thousand eight hundred and seventy, in the thirty-fourth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said William Batchelor, Her special licence that
I, the said William Batchelor, my executors, administrators, and
assigns, or such others as I, the said William Batchelor, my executors,
administrators, and assigns, should at any time agree with, and no others,
from time to time and at all times thercafter during the term therein
expressed, should and lawfully might make, usc, excrcise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN FIRE-BARS,"
upon the condition (amongst others) that I, the said William Batchelor,
my executors or administrators, by an instrument in writing under my,
or their, or one of their hands and seals, should particularly describe
and ascertain the nature of the said Invention, and in what manner
the same was to be performed, and cause the samo to be filed in the
Great Seal Patent Office within six calendar months next and im-
mediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Batchelor, do hereby
declare the nature of my said Invention, and in what manner the same

page_text: is to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the accompanying
Drawings and to the letters of reference marked thereon, that is to
say:-
The object of my Invention is to construct fire-bars in such a way
that the upper part which is more directly exposed to the action of the
heat may be replaced when burnt away or unfit for use, while the other
or lower part may last and be available for a very much longer time.
The upper and lower part are dovetailed or otherwise suitably joined
together by projections on one fitting into corresponding cavities on the
other in such a way that the fit is quite loose and easy when the bar is
cold, but sufficiently tight when the bar is hot to prevent warping or
other inconveniencios, the upper part expanding to a greater extent than
the lower. The under part where it is joined to the upper part may be
scolloped, cut out, notched, or perforated for the air to pass through.
The lower part may be hollow or in two parts or sides with a space
between.
In the accompanying Drawings Fig. 1 is a side clevation, and Fig. 2 a
vertical cross section of my simplest form of fire-bar, a being the upper
part and the lower part, which here is made in one piece, the two are
joined together by projections on one fitting into a corresponding dove-
tail cavity on the other as shown; Fig. 3 is an elevation of the upper
part of a fire-bar of a somewhat different construction; Fig. 4 is an
elevation, and Fig. 5 a plan of the corresponding lower part, which is
cast hollow as shown. The three lugs c, c, c, fit loosely in between the
two sides of b, and the upper and lower part are joined by split
keys d, d, d, passing through the holes e, e, c, and the lugs c, c, c. The
air entering into the cavity between the two sides of the lower part
passes out through the small holes formed between the upper part and
the notches in the lower part, and by intermingling with the burning
elements of the fuel cause perfect combustion without leaving any
clinkers adhering to or clogging the bars, thereby causing a great saving
in fuel. The bar when joined and ready for service is shewn in outside
elevation by Fig. 6 and in cross section by Fig. 7.
The remaining Figures 8 to 13 shew another modification in various
views; Fig. 8 being an elevation of the upper part, and Figs. 9 and 10
elevations of each side composing the lower part; Fig. 11 is a plan of
one of the sides; from Figs. 9, 10, and 11, it will be seen that the two

page_text: sides 6 and 6' are joined by corresponding dovetail pieces f, f. The hook
shaped projections 9; 9, 9, catch hold of corresponding lugs on one of
the sides, and thus the upper and lower part are joined as shewn in
Fig. 12.
It is obvious that the construction may be varied and modified in a 5
great many ways without departing from the principle of the Invention,
'but what I claim as my Invention is,―
Firstly. The construction of fire-bars in an upper and lower part
combined as described and for the purpose specified.
Secondly. The construction of the lower part, viz., making it hollow 1
to allow the air to enter into the cavity and thence escape in thin
streams into and among the burning fuel, substantially as described or
any mere modification of the same.
In witness whereof, I, the said William Batchelor, have hereunto
set my hand and scal, this Eighteenth day of October, in the year 1
of our Lord One thousand eight hundred and seventy.
Signed, sealed, and delivered by
the said William Batchelor, in
the presence of
WALTER BAILEY,
Solr.,
Winchester.
WILLIAM BATCHELOR. (L.S.)