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."
PROVISIONAL SPECIFICATION left by the said John Glover at the Office
of the Commissioners of Patents, with his Petition, on the 28th October
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 STEAM BOILERS AND OTHER USES," to be as follows:-
The object of the improvements is the economy of fuel and the prevention
of smoke. For this purpose each fire-bar is, according to my improvements,
divided in the direction of its length, or from the front to the back of the
furnace, into sections or portions, one section or portion of which for a short
distance from the front towards the back of the furnace is formed with narrow
openings or perforations, then a blank space without perforations, and so on
alternately to the end of the bar, the alternations depending on the depth of
the fire space from back to front. Thus near the front of the bars or next
the dead plate there would be in each bar 1, 2, 3, or more slots or openings
to admit a draft from the ash-pit, say, two to four inches long (lengthways of the
bars) by, say, 16ths or 16ths of an inch wide, then a broad solid space of,
say, 3 to 6 inches long lengthwise of the bar, in or through which there shall
[Price 11

page_text: be no draft from the ash-pit, and then a section of open spaces, as before
mentioned, and so on alternately from front to back; or in place of narrow
slits other forms of openings may be employed, in the alternate sections. The
bars may be from 2 to 7 inches wide with draft between them. The bars
may be formed with one or more slits and a broad space in each section, the
slits and broad spaces alternating in the succeeding sections. The same
principle may be carried out by narrow bars formed with edges of bars
cast to meet each other, and so form close solid spaces or surfaces, through
which there shall be no draft, with open spaces in which there shall be a draft
from under side or ash-pit.
Also the improvements relate to applying raised ribs or bars, one or more,
on the upper side of each of the two ordinary furnace bars next the sides of
the flue or sides of the furnace, say, of 3 inches less or more in breadth or
height above the grate surface, so as to prevent the fuel lying against the
sides of the flue or furnace, but leaving a space between these raised ribs or
bars and the side of the flue or the sides of the furnace to allow of a free
supply of heated air from the ash-pit to the upper side of the fuel, either over
the top of the said bars, or over the top and partially or only through slots
or openings in said ribs or bars; or the said raised ribs or bars may be cast
on the top side of the ordinary bars next the sides of the flue or furnace.
These raised side bars may be faced with fire-tiles.
I do not confine myself to the dimensions stated, as these may be varied.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Glover in the Great Seal Patent Office on the 28th
April 1868.
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 Twenty-eighth day of October, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said John Glover, Her special licence, 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

page_text: 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 performed,
to be particularly described and ascertained in and by the following statement
thereof, that is to say:-
The object of the improvements is the economy of fuel and the prevention
of smoke. For this purpose each fire-bar is, according to my improvements,
divided in the direction of its length, or from the front to the back of the
furnace, into sections or portions, one section or portion of which for a short
distance from the front towards the back of the furnace is formed with narrow
openings or perforations, then a blank space without perforations, and so on
alternately to the end of the bar, the alternations depending on the depth of
the fire space from back to front. Thus near the front of the bars or next
the dead plate there would be in each bar 1, 2, 3, or more slots or openings
to admit a draft from the ash-pit, say, 2 to 4 inches long (lengthways of the
bars) by, say, 16 or 16 of an inch wide, then a broad solid space of, say 3 to
6 inches long lengthwise of the bar, in or through which there shall be no
draft from the ash-pit, and then a section of open spaces, as before mentioned,
and so on alternately from front to back; or in place of narrow slits other
forms of openings may be employed in the alternate sections. The bars may
be from 2 to 7 inches wide, with draft between them. The bars may be
formed with one or more slits and a broad space in each section, the slits and
broad spaces alternating in the succeeding sections. The same principle may
be carried out by narrow bars formed with edges of bars cast to meet each
other, and so to form close solid spaces or surfaces through which there shall
be no draft, with open spaces in which there shall be a draft from the under
side or ash-pit.
Also the improvements relate, secondly, to applying raised ribs or bars, one
or more, on the upper side of each of the two ordinary furnace bars next the
sides of the flue or sides of the furnace, say, of 3 inches less or more in

page_text: breadth or height above the grate surface, so as to prevent the fuel lying
against the sides of the flue or furnace, but leaving a space between these
raised ribs or bars and the side of the flue or the sides of the furnace to allow
of a free supply of heated air from the ash-pit to the upper side of the fuel,
either over the top of the said bars, or over the top and partially or wholly
through slots or openings in said ribs or bars; or the said raised ribs or bars
may be cast on the top side of the ordinary bars next the sides of the flue or
furnace.
I do not confine myself to the dimensions stated, as these may be varied.
But that the Invention may be fully understood, I will by the aid of the
accompanying Drawing proceed to describe means pursued by me in carrying
the same into effect.
DESCRIPTION OF THE DRAWING.
Figure 1 shows a plan view of a fire-place or furnace with bars arranged
according to my Invention; Figure 2 shows by a plan view, Figure 3 by a
side view, Figure 4 by an end view, and Figure 5 by a transverse section one
of the bars separately. In each of the views the same letters indicate corre-
sponding parts wherever they occur.
a, a, represent the side walls of the fire-place or furnace; b, the fire-door;
c, the dead plate; and d, the bridge or other back part of the furnace;
e, e, are the fire-bars, each of which it will be seen is formed with long narrow
openings e in them, which openings are arranged so as to divide the bars in
the direction of their length into sections or portions, with these longitudinal
holes or openings alternating in the direction of the length of the bars, or
from front to back of the fire-place; e are openings formed along the sides of
each of these bars, and which I prefer to be continued from near one end to
near the opposite end.
Figure 6 shows by a plan view my Invention applied to a narrow bar. In
this case the alternate openings et are obtained by half the width of each
opening being formed in each bar.
Figure 7 shows by a sectional view a raised rib or bar applied to one of
the side bars, as stated in respect of the second head of Invention.
Having thus described my Invention, and means which I adopt for carrying
the same into effect, I would have it understood that I do not confine myself
to the precise arrangements as shown; but what I do claim is, the forming
furnaces for steam boiler and other uses with bars having openings and blank
spaces alternating in the direction of their length, in manner substantially as
explained.

page_text: And, secondly, I claim the applying raised ribs next the sides of the flue or
f the furnace, as described.
In witness whereof, I, the said John Glover, have hereunto set my
hand and seal, this Twenty-eighth day of April, in the year of our
Lord One thousand eight hundred and sixty-eight.
JOHN GLOVER. (L.S.)