IMPROVEMENTS IN A MODE OR MODES OF PREPARING CERTAIN MATTERS OR SUBSTANCES TO BE USED AB PIGMENTS
Year: 1850

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, LANGSTON
SCOTT, of Moorgate Street, in the City of London, Wine Merchant, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Twenty-fourth day of
July (One thousand eight hundred and fifty), in the fourteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Langston Scott, my exors, adiñors, and assigns, Her especial license,
full power, sole privilege and authority, that I, the said Langston Scott,
my exors, adiñors, and assigns, or such others as I, the said Langston
Scott, my exors, adññiors, or assigns, should at any time agree with, and
no others, from time to time and at all times during the term of years
therein expressed, should and lawfully might make, use, exercise, and vend,
within England, Wales, and the Town of Berwick-upon-Tweed, and in the
Islands of Jersey, Guernsey, Alderney, Sark, and Man, and also in all Her said
Majesty's Colonies and Plantations abroad, the Invention of "IMPROVEMENTS
IN A MODE OR MODES OF PREPARING CERTAIN MATTERS OR SUBSTANCES TO BE USED
AB PIGMENTS," communicated to me from abroad; in which said Letters
Patent is contained a proviso that I, the said Langston Scott, shall cause a
particular description of the nature of the said Invention, and in what manner
the same is to be performed, by an instrument in writing under my hand and
seal, to be inrolled in Her said Majesty's High Court of Chancery within six

page_text: only about one inch diameter, for a retort two feet eleven inches long, and nine
inches diameter, and I have a cover or valve to this opening to adjust the
size thereof. In place of introdncing the zinc at the front end of the retort,
I can introduce it at the back end through the door k, but in such case
I cause the zinc to be first made hot, so as not to cool the passage a'
when placed therein. There is a slide valve to shut off the communi-
cation between the chamber h and the chamber D, where the products
are received. At the lower part of the chamber h is a shoot, with a slide
valve i, by which any heavy oxides which may deposit there may be withdrawn
from time to time, The opening into the lower part of the chamber h is
kept luted and air-tight when working the apparatus. D is a chamber, which
with the flue I prefer to be composed of iron zinced, but other material may be
employed. The lower part of the chamber D is made into a series of funnels,
there being tubs or other vessels placed below to receive the white zinc in a
dry state, the white zinc falling through cloth or other flexible tubes fixed to the
lower part of the funnels. The upper part of the chamber DI prefer to form
into a very shallow cistern, to contain water, or to have water constantly
flowing over it. E is an outlet into the open air, there being a fine wire
gauze over the entrance from the chamber D, to intercept any white zinc
which may be carried up by the draught. There will therefore be a constant
current through the ehamber D, but such current will be moderate, and only
suitable for carrying off the atmosphere after acting on the zinc vapours. By
this arrangement the process of manufacturing white zinc will be rendered
very simple.
Having thus described the nature of the Invention, and the manner of
performing the same, I would have it understood that I am aware that various
means have before been resorted to for vaporizing zinc and oxidizing the same
by atmospheric air, I do not therefore claim the same, but only the improve-
ments of apparatus bercin described; and I would state that I do not confine
myself to the precise details herein shown and described, as the same may
be varied without departing from the improvements, so long as the peculiar
character of any part of the Invention be retained.
What I claim is,-
First, the setting or bedding a clay retort in sand or other granulated
matter, as above mentioned, when used for making white zinc.
Secondly, I claim the mode herein described of supplying zinc into the
retort.
Thirdly, I claim the mode herein described of arranging or combining the
Π

page_text: And, fourthly, I claim the arrangement of apparatus for drawing off the
white zinc in a dry state.
In witness whereof, I, the said Langston Scott, have hereunto set my
hand and seal, this Twentieth day of January, in the year of our Lord
One thousand eight hundred and fifty-one.
AND BE IT REMEMBERED, that on the Twentieth day of January,
in the year of our Lord 1851, the aforesaid Langston Scott came before
our said Lady the Queen in Her Chancery, and acknowledged the Specifi-
cation aforesaid, and all and every thing therein contained and specified, in
form above written. And also the Specification aforesaid was stamped
according to the tenor of the Statute made for that purpose.
Enrolled the Twenty-fourth day of January, in the year of our Lord One
thousand eight hundred and fifty-one.