A NEW OR IMPROVED PROCESS OR PROCESSES FOR SCULPTURING, MOULDING, ENGRAVING, AND POLISHING STONE, METALS, AND OTHER SUBSTANCES
Year: 1841

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
HARVIG, of the Strand, in the County of Middlesex, Gentleman, and FELIX
MOREAU, of Holywell Street, Milbank, in the said County, Sculptor, send
greeting.
WHEREAS Her present Majesty Queen Victoria, by Her Letters Patent
under the Great Seal of the United Kingdom of Great Britain and Ireland,
bearing date at Westminster, the Twenty-first day of August now last past,
did give and grant unto us, the said John Harvig and Felix Moreau, Her
especial licence, full power, sole privilege and authority, that we, the said John
Harvig and Felix Moreau, our executors, administrators, and assigns, or such
others as we, the said John Harvig and Felix Moreau, our executors, adminis-
trators, or assigns, should at any time agree with, and no others, from time to
time and at all times thereafter during the term of years therein expressed,
shouldand lawfully might make, use, exercise, and vend, within England, Wales,
and the Town of Berwick-upon-Tweed, our Invention of "A NEW OR IMPROVED
PROCESS OR PROCESSES FOR SCULPTURING, MOULDING, ENGRAVING, AND POLISHING
STONE, METALS, AND OTHER SUBSTANCES;" in which said Letters Patent there is
contained a proviso, obliging us, the said John Harvig and Felix Moreau,
by an instrumentin writing under our hands and seals, or under the hand and
seal of one of us, particularly to describe and ascertain the nature of our said
Invention, and in what manner the same is to be performed, and to cause
the same to be inrolled in Her said Majesty's High Court of Chancery within
CD077

page_text: six calendar months next and immediately after the date of the said Letters
Patent, as in and by the same, reference being thereunto had, will more fully
and at large appear.
NOW KNOW YE, that in compliance with the said proviso, we, the said
John Harvig and Felix Moreau, do hereby declare that the nature of our
said Invention, and the manner in which the same is to be performed, is par-
ticularly described and ascertained in and by the Drawings hereunto annexed,
and as follows, that is to say:-
We sculpture upon marble and other matters by the application of all hard
substances upon which acids do not act, such asthe porcelain earths, pounded or
mixed with flint powder, with which counterparts of the objects to be produced
A, A, A, are prepared and then baked; then the surface of the objects we wish
to sculpture B, B, B, is covered with fatty or greasy matters; the said counter-
parts, fixed to any forward and retrograde mechanism whatever C, C, C, C, C,
are then placed thereon, and the machine is moved by the wheel and strap
D, D, D, D. The counterpart penetrates into the greasy or fatty matter or
coating, and the retrogade movement brings it into contact with the matter to
be sculptured; a very small quantity of spirits of salt or other acid is intro-
duced between the two bodies, which acts upon all the projecting or raised
parts that the latter presents to its action, on removing the greasy matter or
coating. This effect takes place in proportion as the counterpart becomes
incrusted, and the operation is performed at the same time with the same
moving power or agent upon an unlimited number of similar or different sub-
jects B, B, B. To attain a prompt result, the mover is worked rapidly. The
shocks or clashing of the counterparts against the matters operated on must be
avoided, as they would produce dents or bruises on the sculptures, which would
destroy the fineness and delicacy of their finish. The forward and retrogade
movementought to be in proportion to the volume of the sculpture, and varied
from the hundredth part of an inch, and less, to as far as a line and more. To
make the mouldings circular, counterpart mouldings are formed with the
aforesaid hard substances E, E, which are made to turn rapidly on the axis
F, F, and in as great a number as may be desired, upon the marble or other
substance to be worked G, G, with are covered with the greasy or fatty matter,
and are fixed to carriages H, which are moved away, in proportion to the
action of the spirit of salt, and to the labour employed
the weight I, by
drawing the cord Kupon or through the pulley L, which causes the hard
substances E to roll in the grooves, according to the form it is wished to give
the mouldings M. In order to polish the sculptures or mouldings, the
ordinary polishing powders are made use of.