1and forth.
This bar is round, eight feet long and two digits in diameter;
on the right side it has a haft made of iron, which is about a foot from the
right end; the aperture in this haft is a palm wide, two digits high, and a
digit thick. The bar holds the exhausted liquation cakes opposite, lest they
should fall down. When the operation of “drying” is completed, a work
man draws out this bar with a crook which he inserts into the haft, as I will
explain hereafter.
on the right side it has a haft made of iron, which is about a foot from the
right end; the aperture in this haft is a palm wide, two digits high, and a
digit thick. The bar holds the exhausted liquation cakes opposite, lest they
should fall down. When the operation of “drying” is completed, a work
man draws out this bar with a crook which he inserts into the haft, as I will
explain hereafter.
In order that one should understand those things of which I have spoken,
and concerning which I am about to speak, it is necessary for me to give some
information beforehand about the furnace and how it is to be made. It stands
nine feet from the fourth long wall, and as far from the wall which is between
the second and fourth transverse walls. It consists of walls, an arch, a chimney,
an interior wall, and a hearth; the two walls are at the sides; and they are
eleven feet three palms and two digits long, and where they support the
chimney they are eight feet and a palm high. At the front of the arch they
are only seven feet high; they are two feet three palms and two digits
thick, and are made either of rock or of bricks; the distance between them
is eight feet, a palm and two digits. There are two of the arches, for the
space at the rear between the walls is also arched from the ground, in order
that it may be able to support the chimney; the foundations of these
arches are the walls of the furnace; the span of the arch has the same
length as the space between the walls; the top of the arch is five feet, a palm
and two digits high. In the rear arch there is a wall made of bricks joined
with lime; this wall at a height of a foot and three palms from the ground
has five vent-holes, which are two palms and a digit high, a palm and a digit
wide, of which the first is near the right interior wall, and the last near the
left interior wall, the remaining three in the intervening space; these vent
holes penetrate through the interior of the wall which is in the arch.
Half-bricks can be placed over the vent-holes, lest too much air should be
drawn into the furnace, and they can be taken out at times, in order that he
who is “drying” the exhausted liquation cakes may inspect the passages,
as they are called, to see whether the cakes are being properly “dried.”
The front arch is three feet two palms distant from the rear one; this arch
is the same thickness as that of the rear arch, but the span is six feet wide;
and concerning which I am about to speak, it is necessary for me to give some
information beforehand about the furnace and how it is to be made. It stands
nine feet from the fourth long wall, and as far from the wall which is between
the second and fourth transverse walls. It consists of walls, an arch, a chimney,
an interior wall, and a hearth; the two walls are at the sides; and they are
eleven feet three palms and two digits long, and where they support the
chimney they are eight feet and a palm high. At the front of the arch they
are only seven feet high; they are two feet three palms and two digits
thick, and are made either of rock or of bricks; the distance between them
is eight feet, a palm and two digits. There are two of the arches, for the
space at the rear between the walls is also arched from the ground, in order
that it may be able to support the chimney; the foundations of these
arches are the walls of the furnace; the span of the arch has the same
length as the space between the walls; the top of the arch is five feet, a palm
and two digits high. In the rear arch there is a wall made of bricks joined
with lime; this wall at a height of a foot and three palms from the ground
has five vent-holes, which are two palms and a digit high, a palm and a digit
wide, of which the first is near the right interior wall, and the last near the
left interior wall, the remaining three in the intervening space; these vent
holes penetrate through the interior of the wall which is in the arch.
Half-bricks can be placed over the vent-holes, lest too much air should be
drawn into the furnace, and they can be taken out at times, in order that he
who is “drying” the exhausted liquation cakes may inspect the passages,
as they are called, to see whether the cakes are being properly “dried.”
The front arch is three feet two palms distant from the rear one; this arch
is the same thickness as that of the rear arch, but the span is six feet wide;
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