IMPROVEMENTS IN FIRE-BARS
Year: 1869

page_text: LETTERS PATENT to William Brown and Thomas Hustler Garbutt,
both of Seamur, near Scarborough, in the County of York,
Engineers, for the Invention of "IMPROVEMENTS IN FIRE-BARS."
Sealed the 23rd July 1869, and dated the 28th January 1869.
PROVISIONAL SPECIFICATION left by the said William Brown and
Thomas Hustler Garbutt at the Office of the Commissioners of
Patents, with their Petition, on the 28th January 1869.
We, WILLIAM BROWN and THOMAS HUSTLER GARBUTT, both of Sea.
mur, near Scarborough, in the County of York, Engineers, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN FIRE-BARS,"
to be as follows:-
Solid fire or furnace bars as ordinarily constructed when in use soon
and easily foul by reason of the choking of the air spaces provided
between them, and thereby the free current of air necessary for keeping

page_text: the bars at a sufficiently low temperature is prevented and they fuse
more or less, foul rapidly, and prevent the access of the necessary
draught for the proper and thorough consumption of fuel; also by reason
of the air spaces provided between such bars being taper in section when
the top side of the bars is partially fused and gets worn the small pieces
of fuel and cinder fall through and are lost.
Now this Invention has for its object the removal of such evils, and
consists in constructing fire or furnace bars hollow and perforated in
themselves, and thereby allowing of a rapid and free circulation of air
through as well as between them, or greatly improving the draught
and thereby ensuring the proper and thorough consumption of fuel, also
the bar by this means being kept at a uniformly low temperature its
fusion, fouling, and breaking is entirely prevented, or nearly so. Also
constructing such bars, those hereafter described, and fire or furnace bars
generally in such manner that the air spaces provided between them
shall be parallel in section so that an even draught or air space is
obtained until the bar is worn through, thereby the consumption of
fuel is equalized and none is lost by dropping through the bars.
Further the constructing fire or furnace bars by casting them in one
piece or in sets or blocks on a wrought-iron bar or bars, such wrought-
iron bar or bars being left in for the purposes of strengthening or sup-
porting the cast-iron bar or cast-iron set of bars. The fire-bars may be
constructed of metal made hollow and furnished with perforations
leading from their exterior surfaces to the hollow part; such perforations
may be made circular, oval, elliptical, square, or of any geometrical or
irregular shape, of any convenient size, and may be made either on the
top, sides, bottom, or ends of the bar or either on one or more of these,
but preferably on the top, bottom, and ends, and such perforations may
be made with their axes at right angles to the axes of the bar or may be
made at any desired angle thereto. Fire or furnace bars generally, and
whether hollow and perforated as above described or as hereafter de-
scribed, may be made externally in cross section with their sides parallel
and of any convenient depth furnished with fitting or distance pieces of
any convenient size, so that when lying or fixed in their places side by
side the air spaces between them will assume a parallel shape. When it
is desired to make cast-iron bars having wrought-iron rods, bars, or sup-
ports through or in them we proceed by casting in any of the ordinary
ways the metal on or over the wrought-iron rods or bars, which are for the

page_text: purpose introduced and placed in the mould or casting box in the
position it is intended they should occupy, so that they are cast in; or we
cast the bars on a mandril or core and afterwards insert wrought-iron rod,
bar, or support. We would remark that the bars as above described,
whether hollow or otherwise, may be made, cast, or wrought together in
pairs or in sets, or the whole block or set of bars may be cast or wrought
in one.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Brown and Thomas Hustler Garbutt in
the Great Seal Patent Office on the 26th July 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
BROWN and THOMAS HUSTLER GARBUTT, both of Seamur, near Scar-
borough, in the County of York, Engineers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-eighth day of January, in the
year of our Lord One thousand eight hundred and sixty-nine, in the
thirty-first year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said William Brown and Thomas
Hustler Garbutt, Her special licence that we, the said William Brown
and Thomas Hustler Garbutt, our executors, administrators, and assigns,
or such others as we, the said William Brown and Thomas Hustler
Garbutt, our executors, administrators, and assigns, should at any time.
agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make,
use, exercise, 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
we, the said William Brown and Thomas Hustler Garbutt, our executors
or administrators, by an instrument in writing under our, 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 same to be filed in the Great Seal
Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW VE that
the said William Brown and Thomas

page_text: Hustler Garbutt, do hereby declare the nature of the said Invention, and
in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement, that is to say :-
Solid fire or furnace bars as ordinarily constructed when in use soon
and easily foul by reason of the choking of the air spaces provided
between them, and thereby the free current of air necessary for keeping
the bars at a sufficiently low temperature is prevented and they fuse
more or less, foul rapidly, and prevent the access of the necessary
draught for the proper and thorough consumption of fuel; also by
reason of the air spaces provided between such bars being taper in
section when the top side of the bars is partially fused and gets worn
the small pieces of fuel and cinder fall through and are lost.
Now this Invention has for its object the removal of such evils, and
consists in constructing fire or furnace bars hollow and perforated in
themselves, and thereby allowing of a rapid and free circulation of air
through as well as between them, this greatly improving the draught
and thereby ensuring the proper and thorough consumption of fuel, also
the bar by this means being kept a uniformly low temperature its
fusion, fouling, and breaking is entirely prevented, or nearly so. Also
constructing such bars, those hereafter described, and fire or furnace bars
generally in such manner that the air spaces provided between them shall
be parallel in section, so that an even draught or air space is obtained
until the bar is worn through, thereby the consumption of fuel is
equalized and none is lost by dropping through the bars. The fire-bars
may be constructed of metal made hollow and furnished with perfora-
tions leading from their exterior surfaces to the hollow part; such per-
forations may be made circular, oval, elliptical, square, or of any
geometrical or irregular shape, of any convenient size, and may be made
either on the top, sides, bottom, or ends of the bar, or either on one or
more of these, but preferably on the top, bottom, and ends; and such
perforations may be made with their axes at right angles to the axes of
the bar or may be made at any desired angle thereto. Fire or furnace
bars generally, and whether hollow and perforated as above described or
as hereafter described, may be made externally in cross section with
their sides parallel and of any convenient depth, furnished with fitting
'or distance pieces of any convenient size, so that when lying or fixed in
their places side by side the air spaces between them will assume a
parallel shape. We would remark that the bars as above described may

page_text: be made, cast, or wrought together in pairs or in sets, or the whole block
or set of bars may be cast or wrought in one.
The accompanying Drawing will serve to illustrate the Invention.
Figure 1 is a plan, Figure 2 a side elevation, and Figure 3 a sectional
elevation, Figure 4 a bottom plan, and Figure 5 a cross section of a
fire-bar made according to the Invention; but the perforations and
spaces, as also the size and form, may be varied to any extent to carry
out the object of the Invention as above set forth.
In witness whereof, we, the said William Brown and Thomas
Hustler Garbutt, have hereunto set our hands and seals, this
Twenty-fourth day of July, in the year of our Lord One thousand
eight hundred and sixty-nine.
WILLIAM BROWN.
(L.S.)
THOMAS HUSTLER GARBUTT. (L.S.)