IMPROVEMENTS IN THE TREATMENT AND PREPARATION OF CERTAIN CHEMICAL COMPOUNDS FOR THE PURPOSE OF RENDERING THEIR CARRIAGE, SALE, Use, and APPLICATION MORE CONVENIENT AND ECONOMICAL
Year: 1875

page_text: LETTERS PATENT to Thaddeus Hyatt, of 66, Gloucester Gardens, Hyde
Park, London, in the County of Middlesex, Manufacturer of Patent
Lights, for the Invention of "IMPROVEMENTS IN THE TREATMENT AND
PREPARATION OF CERTAIN CHEMICAL COMPOUNDS FOR THE PURPOSE OF
RENDERING THEIR CARRIAGE, SALE, Use, and APPLICATION MORE CONVENIENT
AND ECONOMICAL.”
Sealed the 18th June 1875, and dated the 21st April 1875.
PROVISIONAL SPECIFICATION left by the said Thaddeus Hyatt at the
Office of the Commissioners of Patents, with his Petition, on the
21st April 1875.
I, THADDEUS HYATT, of 66, Gloucester Gardens, Hyde Park, London,
in the County of Middlesex, Manufacturer of Patent Lights, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN THE
TREATMENT AND PREPARATION OF CERTAIN CHEMICAL COMPOUNDS FOR THE PURPOSE
OF RENDERING THEIR CARRIAGE, SALE, USE, AND APPLICATION MORE CONVENIENT
AND ECONOMICAL," to be as follows :-
This Invention relates to chemical substances containing water of

page_text: crystallization and to the substances combined with them in their
various applications in domestic use and in the arts, and has reference to
compacting them into a less space than they fill naturally. Sal soda,
alum, Epsom, Glauber, and Rochelle salts, and other substances con-
taining water of crystallization as now manufactured and sold, are put
upon the market in their natural bulky state, and the use of theso
materials as variously applied in the manufacture, for example, of soda
powders and seidlitz powders, and as steam generators in the manu-
facture of fireproof safes, is a use of the natural material in its bulky
state.
According to one part of my Invention my improvement consists in
submitting the simple and pure materials themselves to powerful
pressure, in some cases as high as 300 tons pressure, by which means
the crystals are broken and the mass becomes reduced to about one-half
its former bulk. For domestic use these substances are reduced to the
form of cakes or tablets with division channels made upon them, so that
they may be readily broken into pieces of known weight.
In applying my improved materials to the manufacture of soda and
scidlitz powders I compress the alkaline portions into sheets or wafers
by themselves by any ordinary means, and the acid into corresponding
form by itself, the sheets or tablets being suitably indented and marked
to indicate the doses.
In applying my improved materials to the manufacture of fireproof
safes and similar purposes I compress the materials into blocks, slabs,
sheets, or cakes of suitable size for the use intended by any known
means, in all cases compressing the pure salts by themselves, and
afterwards uniting them to other materials, such as asbestos, fire-clay,
cement, plaster of Paris, and other like substances.
The foregoing examples are given as illustrations merely of what may
be done with the improved materials. A great variety of other useful
applications of them may doubtless be made equally as well, where, as
in "effervescing powders," both alkali and acid are mixed. I then
compress the two together in cakes or other forms.