A NEW MANUFACTURE OF ARTICLES, PARTS OF ARTICLES, PARTS OF MACHINERY, SURFACES, AND ORNA- PROVISIONAL SPECIFICATION, SULFACES AND ORNAMENTAL WORKS, FROM TALC AND OTHER SILICATES OF MAGNESIA
Year: 1858

page_text: LETTERS PATENT to Richard Henry Hess, of Islington, in the County of
Middlesex, Engineer, for the Invention of "A NEW MANUFACTURE OF
ARTICLES, PARTS OF ARTICLES, PARTS OF MACHINERY, SURFACES, AND ORNA-
PROVISIONAL SPECIFICATION left by the said Richard Henry Hess at
the Office of the Commissioners of Patents, with his Petition, on the
24th November 1858.
I, RICHARD HENRY HESS, of Islington, in the County of Middlesex, Engi-
neer, do hereby declare the nature of the said Invention for "A NEW
MANUFACTURE OF ARTICLES, PARTS OF ARTICLES, PARTS OF MACHINERY, SULFACES
AND ORNAMENTAL WORKS, FROM TALC AND OTHER SILICATES OF MAGNESIA," to be
as follows:-
My Invention consists in reducing to powder certain silicates of magnesia
such as talc, steatite, &c., pressing such powder in a perfectly dry state
into moulds of any desired shape, form, or configuration, and baking it therein
to the required degree of hardness, adding in certain cases, where desirable,
substances such as aluminium, kaolin, lime, carbonate of barytes, and coloring
by means of metallic oxydes, carbon, or other agent.
By these means various useful articles, parts of articles, and of machinery,
ornamental surfaces, and works, &c. may be produced, such for example, as
buttons, backs of brushes, pianoforte keys, billiard balls, knife, stick, and
ונסמו

page_text: parasol handles, pipes, mouldings for frames, and other purposes, mantel-
pieces, taps, bearings of machinery, parts of spinning frames, vases, and very
many others too numerous to cite herein.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Richard Henry Hess in the Great Seal Patent Office on
the 21st March 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
HENRY HESS, of Islington, in the County of Middlesex, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of November, in the year of our
Lord One thousand eight hundred and fifty-eight, in the twenty-second year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Richard Henry Hess, Her special licence that I, the said Richard
Henry Hess, my executors, administrators, and assigns, or such others as I,
the said Richard Henry Hess, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time and at
all times thereafter during the 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 "A NEW MANUFACTURE OF ARTICLES, PARTS OF ARTICLES, PARTS OF MACHI-
NERY, SURFACES, AND ORNAMENTAL WORKS, FROM TALC AND OTHER SILICATES OF
MAGNESIA," upon the condition (amongst others) that I, the said Richard
Henry Hess, my executors or administrators, by an instrument 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 immediately after
the date of the said Letters Patent.
NOW KNOW YE, that I, the said Richard Henry Hess, do hereby
declare the nature of the said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say:-
My Invention consists in a new mode of manufacturing certain articles,
parts of articles, parts of machinery, surfaces, and works, such for example, as
buttons, backs of brushes, pianoforte keys, billiard balls, knife, stick, and

page_text: parasol handles,pipes, mouldingsforframes, and other purposes, mantel-pieces,
taps, bearings of machinery, parts of spinning frames, vases, and others, in
which strength,hardness, durability, and resistance to heat, friction,oxydation,
corrosion, &c., are desirable qualities. For this purpose, I take certain
silicates of magnesia, such as talc, steatite, &c., which I reduce to a state of
powder, and press the material into suitable moulds of the shape and con-
figuration of the article to be made, adding coloring matter when required for
black or various colors, or for staining to imitate marbles, agates, or other
substances. The coloring may be imparted by mixing oxydes of metal,
carbon, &c. with the powder before pressing it into moulds, or by using agents
such as organic coloring substances, after the articles are pressed and fired,
or otherwise as desirable; or in many cases, as for example, in manufacturing
steps for spindles, &c, the coloring may be entirely dispensed with, and the
silicate allowed to retain its natural colour.
Other substances may also be added to the silicates, such as kaolin,alumina,
lime, carbonate of barytes and felspar, at the option of the manufacturer. The
article having been so formed in the mould is to be removed therefrom, and
baked, or fired, preferably in a kiln similar to the kiln used for the manu-
facture of porcelain. (The addition of a small proportion of glass to the
powdered material, before pressing it into moulds assists the fusing operation.)
The articles may be polished, glazed, or enamelled if desired, by the means
usually adopted by porcelain manufacturers.
And having now described the nature of the said Invention, and in what
manner the same is to be performed, I declare that what I claim is, manu-
facturing articles, parts of articles, parts of machinery, surfaces, and
ornamental works, from talc, steatite, and other silicates of magnesia in the
manner herein-before described.
In witness whereof, I, the said Richard Henry Hess, have hereunto set
my hand and seal, this Eighteenth day of March, in the year of our
Lord One thousand eight hundred and fifty-nine.
Witness,
S. E. NEWSOME.
R. H. HESS. (L.S.)