IMPROVEMENTS IN THE METHOD OF SOLDERING OR UNITING CAST IRON
Year: 1856

page_text: LETTERS PATENT to George Davies, of the Office for Patents, 1, Serle
Street, Lincoln's Inn, in the County of Middlesex, Civil Engineer, for. the
Invention of "IMPROVEMENTS IN THE METHOD OF SOLDERING OR UNITING
CAST IRON." A communication from Mathieu Joseph Receveur.
Sealed the 12th September 1856, and dated the 14th April 185€.
PROVISIONAL SPECIFICATION left by the said George Davies at the Office
of the Commissioners of Patents, with his Petition, on the 14th A; ril
1856.
I, GEORGE DAVIES, of the Office for Patents, 1, Serle Street, Lincoln's Inn,
in the County of Middlesex, Civil Engineer, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN THE METHOD OF SOLDERING OR UNITING
CAST IRON," a communication from Mathieu Joseph Receveur, to be as follows:--
This Invention relates to the soldering or uniting of large masses of cast iron,
such as cylinders or "rolls" for rolling, iron conduit pipes, shafting, &c.,
either when they have become broken or are otherwise required to be united;
and in order to illustrate the nature of the Invention, I shall proceed to explain
the method of repairing a "roll," the journal of which has become broken.
If the journal is broken at some distance from the shoulder, the fracture
should be reduced to a level surface at about an inch or so from the shoulder;
but if the fracture is "flush" with the shoulder it does not require to be

page_text: levelled. The "roll" is placed in a vertical position in a pit with the broken
surface upwards, and then heated by means of a coke fire placed all round it,
and enclosed by a grate or fire bricks. As soon as the roll has become suffi-
ciently heated, that is to say, when it is red hot, the fire and grate or bricks
are quickly removed, and a "flask" or box (the top of which is level with the
shoulder) is placed round the "roll" and rammed full with sand. A mould
in dry sand or loam for forming the journal is then placed over the centre of
the "roll;" this mould is provided with a hole at a little above the level of the
line of the junction to be effected. The mould is surrounded by a second "flask
or box, provided with a corresponding opening, and the interstice or space
between rammed with sand, care being taken to leave a channel of communi-
cation between the two holes; a quantity of iron in a fused or liquid state is
then poured into the mould, so as to have a continuous bath of fused metal upon
the surface to be united, the surplus or excess running off through the channel
or opening above named. When a sufficient quantity of metal has been
poured in to cause the fusion of the surface, the discharge opening is closed or
plugged, and the mould filled with molten metal. A second mould, intended
to form the end of the "roll," is then placed over the former, and is surrounded
by a "flask" and rammed tight with sand; a further quantity of molten
metal to fill this mould is then poured in, and the operation is complete. On.
cooling, the new metal will be found to have effected a perfect junction or
union with the old. It is evident, that by varying the details, so as to suit the
form and position of the junction to be effected, the same process is applicable
to the repair of almost any fracture of cast iron, or to the soldering or union
of cast iron wherever such union may be required.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Davies in the Great Seal Patent Office on the
4th October 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
DAVIES, of the Office for Patents, 1, Serle Street, Lincoln's Inn, in the County
of Middlesex, Civil Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Пer Letters
Patent, bearing date the Fourteenth day of April, in the year of our Lord
One thousand eight hundred and fifty-six, in the nineteenth year of ler
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said George Davies, Her special licence that I, the said George Davies,

page_text: my executors, administrators, and assigns, or such others as I, the said George
Davies, my executors, administrators and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during tho
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 THE METHOD OF
SOLDERING OR UNITING CAST IRON," being a communication from Mathieu Joseph
Receveur, a foreigner residing abroad, upon the condition (amongst others)
that I, the said George Davies, my executors or administrators, by an instru-
ment 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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said George Davies, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement in writing, reference being had to the annexed Drawings, and to the
figures and letters marked thereon, that is to say :-
This Invention relates to the soldering or uniting of large masses of cast
iron, such as cylinders or "rolls" for rolling iron, conduit pipes, shafting, &c.,
either when they have become broken or are otherwise required to be united.
And in order to illustrate the Invention, I shall proceed to explain the method
of repairing a "roll" which has become broken, which will be readily under-
stood upon reference to the annexed Drawing, and the following explanation
thereof If the journal of the "roll" is broken at some distance from the
shoulder, as represented at Figure 1 in the Drawing, the fracture should be re-
duced to a level surface a, b, at about an inch or so from the shoulder; but if the
fracture is "flush" with the shoulder it does not require to be levelled. The
"roll "A, see Figure 2, is placed in a vertical position in a pit with the broken
surface upwards, and then heated by means of coke fire placed all round it,
and enclosed by a grate or fire bricks. As soon as the "roll" has become
sufficiently heated, that is to say, when it is red hot, the fire and grate or
bricks are quickly removed, and a flask or box B, B, (the top of which is level
with the shoulder) is placed round the roll and rammed full with sand. A
mould C in dry sand or loam for forming the journal is then placed over
the centre of the "roll"; this mould is provided with a hole c at a little
above the level of the line of the junction to be effected. The mould C is sur-
rounded by a second flask or box D provided with a corresponding opening d,

page_text: and the interstice or space between rammed with sand, care being taken to
leave a channel of communication between the two holes; a quantity of iron
in a fused or liquid state is then poured into the mould, so as to have a con-
tinuous bath of fused metal upon the surface to be united, the surplus or
excess running. off through the channel or opening above named. When
a sufficient quantity of metal has been poured in to cause the fusion of
the surface, the discharge opening d is closed or plugged, and the mould
filled up with molten metal. A second mould E, intended to form the end
of the "roll," is then placed over the former, and is surrounded with a flask F,
and rammed tight with sand; a further quantity of molten metal to fill this
mould is then poured in and the operation is complete. On cooling, the new
metal will be found to have effected a complete junction or union with the old.
It sometimes occurs that the rims or collars of the "rolls" become either
.partially or entirely broken off. The method of repairing the "rolls" in the
former case is shewn in Figures 3 and 4. The "roll" A being partially
imbedded in sand, the broken part of the rim is surrounded by a rectangular
four-sided mould B in loam, which is furnished with an opening b above the
level of the fracture. This mould is then surrounded with sand, care being
taken to leave an outlet or channel c opposite the opening b. The fusion
and junction of the parts is effected in the same manner as in the former case.
If the rim is broken off entirely, it is repaired at three or four operations, as
represented at Figure 5. It is evident, that by varying the details, so as to suit
the form and position of the junction to be effected, the same process is appli-
cable to the repair of almost any fracture of cast iron, or to the soldering or
union of cast iron wherever such union may be required.
In witness whereof, I, the said George Davies, have hereunto set my hand
and seal, this Fourth day of October, in the year of our Lord One
thousand eight hundred and fifty-six.
GEORGE DAVIES. (L.S.)
Signed and sealed in the presence of
BRISTOW HUNT,
Solicitor & Patent Agent,
1, Serle Street, Lincoln's Inn, London.