IMPROVEMENTS IN FURNACES FOR STEAM BOILERS AND OTHER USES
Year: 1867

page_text: LETTERS PATENT to John Glover, of 46, Sekforde Street, Clerkenwell, in
the County of Middlesex, for the Invention of "IMPROVEMENTS IN FURNACES
FOR STEAM BOILERS AND OTHER USES."
Sealed the 10th December 1867, and dated the 18th June 1867.
PROVISIONAL SPECIFICATION left by the said John Glover at the Office
of the Commissioners of Patents, with his Petition, on the 13th June
1867.
I, JOHN GLOVER, of 46, Sekforde Street, Clerkenwell, in the County of
Middlesex, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN FURNACES FOR STRAM BOILERS AND OTHER USES," to be as follows:-
The object of my Invention is to economize fuel, and more directly to utilize
the hottest surface thereof.
The general practice in the arrangement of furnaces is for the bars to be
all of uniform width or nearly so, and I have found that in the use of such
arrangements much unspent fuel is unavoidably allowed to pass through
between the bars into the ash-pit without being effectually utilized, and at
the same time that that part of the fuel which receives the direct action of
the draft of air, and which is the hottest is on the under side and furthest
from the boiler or other surface to be heated, by which much radiated heat
is lost

page_text: In carrying out my improvements I make some of the furnace bars or
surfaces of a set much broader and wider than the others. Between each
broad bar or surface, say of 4 inches or more in width, I place one, two,
or more narrow bars of 1 to 2 inches, then a broad bar, and then narrow
bars alternately until the grate surface is filled up; or a composite bar of 2 or 3
inches, having 2 or 3 ribs may be used instead of the narrow bars alternately
between the broad bars.
In carrying out this improvement air to aid combustion is admitted to the
upper side of the fuel either by perforations in the dead plate, door, or otherwise,
with regulating means if required.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Glover in the Great Seal Patent Office on the 13th
December 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
GLOVER, of 46, Sekforde Street, Clerkenwell, in the County of Middlesex, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirteenth day of June, in the year of our Lord One
thousand eight hundred and sixty-seven, in the thirtieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the
said John Glover, Her special license that I, the said John Glover, my
executors, administrators, and assigns, or such others as I, the said John
Glover, my 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 FURNACES FOR
STEAM BOILERS AND OTHER USES," upon the condition (amongst others) that I,
the said John Glover, 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 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 YE, that I, the said John Glover, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-

page_text: to the precise arrangement or dimensions shown and described, as variations
may be made therein without departing from the peculiar character of the
Invention; but what I claim is, the arranging or combining bars or surfaces
for supporting the fuel in steam boiler and other furnaces, so that such bars or
surfaces may be formed alternately broad and narrow to admit the air in
passing up to the fuel supported thereby in limited quantities and varying
distances, substantially as explained.
In witness whereof, I, the said John Glover, have hereunto set my
hand and seal, this Twelfth day of December, in the year of our Lord
One thousand eight hundred and sixty-
JOHN GLOVER. (L.s.)