A METHOD OR WAY OF MAKING WHITE LEAD; AND ALSO OF CASTING LEAD, WHICH IS TO BE USED FOR MILLING FOR THE COVERING OF CHURCHES, HOUSES, AND OTHER BUILDINGS
Year: 1749

page_text: CREED'S SPECIFICATION.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, Sir JAMES
CREED, of Greenwich, in the County of Kent, Knight, send greeting.
WHEREAS His present Majesty King George the Second," by Letters
Patent under the Great Seal of Great Britain, bearing date.at Westminster,
the Thirteenth day of December last past, reciting that I, the said Sir James
Creed, had, by my Petition to His Majesty, represented that I had invented
"A METHOD OR WAY OF MAKING WHITE LEAD; AND ALSO OF CASTING LEAD,
WHICH IS TO BE USED FOR MILLING FOR THE COVERING OF CHURCHES, HOUSES,
AND OTHER BUILDINGS," His Majesty did thereby give and grant unto me,
the said Sir James Creed, my executors, administrators, and assigns,
His especial licence, full power, solo priviledge and authority, to make,
use, exercise, and vend my said Inventions, within England, Wales, and the
Town of Berwicke-upon-Tweed, for the term of fourteen years from the date
thereof;. in which said Letters Patent is contained a proviso that if I should
not particularly describe, and ascertain the nature of the said Inventions,
and in what manner the same are. to be performed, by'an instrument in writing
under my hand and seal, and cause the same to be inrolled in the High Court
of Chancery within six kalendar months next after the date of the said Letters
Patent, that then the said Letters Patent should become void.
NOW KNOW YE, that I, the said Sir James Creed, in pursuance and per-
formance of the said proviso, do hereby describe and ascertain the nature of
the said Inventions, and in what manner the same are to be performed, as
follows (that is to say) :-
The said method, way, or means of making the said white load is by the

page_text: heat of fire (instead of horse dung, hitherto the common method), placing in
chambers, rooms, stoves, ovens, or other close or confined places heated with
fire, lead cast in thin plates, and raising or conveying therein the steam or
vapour of vinegar or other acid raised by fire, and continuing such heat and
steam or vapour till the said plates of lead are corroded thereby into flakes or
dust of white lead; which chambers, rooms, stoves, ovens, or other places to
be provided with sliders, stopples, valves, stopcocks, or the like contrivance
placed therein and loaded, that when the steam or heat is of too great strength,
the same may be vented and discharged into the open air, or being collected
by a still head or into a place in nature of a still head, and by means of a
refrigitory may be condensed and brought into a receiver for further use.
And the nature of the said Invention for casting of lead, and the manner the
same is performed, is, by casting lead in sheets on a bed of mettal, either iron,
copper, brass, or other mettal, the thickness of the sheet to be cast to be
determined by a strike in the common method used in casting of lead on a bed
of sand; or such lead to be cast in a mould made of any of the aforesaid
mettals, consisting of two parts; and to adjust or determine the thickness of
the sheets to be cast according to the distance such two parts of the mould
may be placed at from each other, the under part of the mould being the bed
for the under side of the sheet to be cast, the other part of the mould being to
cover and to confine the upper surface of the sheets, by which means the thick-
nesses will be determined as may be most proper for the purpose required; the
said mettal mould, whether consisting of a bed only for casting on, or if of two
parts, as a bed and cover, must be first nealed with fire or made warm as often
as used; and the said mould of two parts may be laid either horrizontally, or
inclined, or placed perpendicular.
In witness whereof, I the said Sir James Creed, have hereunto set my
hand and seal, the Twelfth day of June, in the twenty-fourth year of
the reign of our Sovereign Lord Georgo the Second, by the grace of
God, of Great Britain, France, and Ireland King, Defender of the
Faith, and so forth, and in the year of our Lord One thousand seven
hundred and fifty.
Signed, sealed, and delivered (being first
duly stamped), in the presence of,
JAMES (L.s.) CREED.
W* STEED.
Jos* SHARPE.

page_text: AND BE IT REMEMBRED, that on the said Twelfth day of June, the
before-named Sir James Creed, Knight, came before our said Lord the King
in His Chancery, and acknowledged the Writing aforesaid, and every thing
therein contained and specified, in form above said. And the said Writing was
stamped according to the Statute made in the sixth year of the reign of the
late King William and Queen Mary, and so forth.
Inrolled the said Twelfth day of June, in the said twenty-fourth year
of the reign of His said Majesty King George the Second.