IMPROVEMENTS IN FURNACES USEd in the Manufacture of Glass.” FUCESSED in the
Year: 1875

page_text: LETTERS PATENT to George Scott, of Glasgow, in the County of
Lanark, North Britain, for the Invention of "IMPROVEMENTS IN
FURNACES USEd in the Manufacture of Glass.”
FURNACES USED in the Manufacture of Glass.”

page_text: zontal section is a four sided figure, having one side long, the opposite side
being short. These long and short sides are connected by two inclined
sides of equal length. The short side of the block is that which bears
against the end of the tank. The block may also be triangular in section,
the apex of the triangle bearing against or being let into the end
of the tank.
The blocks which have hitherto been used at the places where the
aforesaid improved blocks are employed have been long rectangular
slabs, which by the unequal expansion and contraction due to variations
of temperature under that form frequently break, thereby causing
considerable expense and loss in renewal, but by constructing the bricks
of the forms herein-before described, the narrowest side or apex at first
becomes highly heated, and the heat is gradually diffused throughout
the mass.
The upper part of the improved block forming the end of the
"cupola" is covered with one or more thin slabs, upon which brickwork
is placed.
The ends of the tank may or may not be surrounded with brickwork
lined with sand for the purpose of confining the heat in that part of the
tank, and the triangular space on either side of the improved block may
also be closed up with brickwork.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Scott in the Great Seal Patent Office on
the 8th July 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE 25
SCOTT, of Glasgow, in the County of Lanark, North Britain, send
greeting.....
- WHEREAS Her most Excellent Majesty. Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of January, in the
year of our Lord One thousand eight hundred and seventy-five, in 30
the 38th year of Her reign, did, for. Herself, Her. heirs and suc-.
cessors, give and grant unto me, the said George Scott, Her special
license that I, the said George Scott, my executors, administrators,

page_text: and assigns, or such others as I, the said George Scott, my executors,
administrators, or 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 USED IN THE MANUFACTURE OF GLASS," upon the condition
(amongst others) that I, the said George Scott, by an instrument in
writing under my hand and scal, 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 George Scott, do hereby declaro
the nature of my said Invention, and in what manner the same 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 and figures marked thereon, that is to say:-
My said. Invention which relates to improvements in furnaces used in
the manufacture of glass, has reference to that part of such furnaces.
known as the "cupola " or fire chamber.
And the Invention consists in forming the end of the "cupola" next
the tank which contains the liquid glass of a fire-clay block, whose hori-
zontal section is a four sided figure, having one side long, the opposite side
being short. These long and short sides are connected by two inclined
sides of equal length. The short side of the block is that which bears
against the end of the glass tank.
Under a modification of my said Invention the fire-clay block may be
triangular in section, the apex of the triangle bearing against or being
let into the end of the tank.
And in order that my said Invention may be properly understood I
now proceed more particularly to set forth the system, mode, or manner,
in or under which the same is or may be used or practically carried into
effect, reference being had to the annexed Sheet of Drawings, and to
the letters and figures marked thereon, that is to say :-
On the Sheet of Drawings hereunto appended Figure 1 is a side
elevation; Figure 2, a longitudinal section; and Figure 3, a horizontal

page_text: section on the line a, b, Figure 1, of a furnace, such as is used in the
manufacture of glass, and to which the improvements constituting my
said Invention are shewn applied. As illustrated by these Figures
between the inner end of each "cupola" or fire chamber A and the
ends of the glass tank B of the furnace a fire-clay block C is placed.
These blocks the form of which in horizontal section is shewn at Figure 3,
and by the detailed view drawn to an enlarged scale at Figure 4 of the
Drawings, are situate with their narrower ends resting vertically against
ör let into the ends of the tank B, the wider end of each block C being
perferably covered, as shown, by a wall or lining D of fire-brick to
protect the blocks at those parts from the destructive action of the heat
generated within the "cupolas;" or in lieu of this arrangement the walls
or linings D may be dispensed with, in which case the widest ends of
the. blocks C constitute the inner ends of the "cupolas" A. The upper
side of each block C is covered with one or more thin slabs E extending
across the entire width of the "cupola," as indicated by the dotted lines
at Figure 3, and on these slabs the portions of the side walls of the
cupolas" above the fire-clay blocks C are built, as shewn at Figure 1
of the Drawings.
"
Instead of forming the fire-clay blocks,, as more particularly seen in
horizontal section at Figures 3 and 4 of the Drawings, they may be
made triangular, as illustrated in horizontal section at Figure 5, under
which arrangement the apex of the triangle bears against or is let
into the end of the glass tank B. The ends of the tank B under either
arrangement may or may not be surrounded with brickwork lined with
sand for the purpose of confining the heat at those parts' of the tank.
On the Drawings, and more particularly at Figure 3 thereof the tank is
shewn so surrounded and lined.
The triangular space on each side of the improved blocks C'instead of
being enclosed by walls F of brickwork and the space filled in with a
lining of sand or other suitable material, may in lieu of using sand be
entirely filled with loose brickwork, or the lining or filling in may be
dispensed with and the triangular spaces left open to the atmosphere.
Long rectangular blocks have been hitherto used at the places where
the aforesaid improved blocks are employed, and these by the unequal
expansion and contraction due to the variations of temperature under that
form frequently break, thereby causing considerable expense and loss in
renewal, but by constructing the blocks in cither of the forms herein-