IMPROVE- MENTS IN THE TREATMENT AND PREPARATION OF CERTAIN CHEMICAL COX- POUNDS, SO AS TO RENDER THEIR CARRIAGE AND TRANSIT MORE CONVENIENT AND ECONOMICAL.
Year: 1871

page_text: LETTERS PATENT to Thaddeus Hyatt, of Gloucester Gardens, Hyde
Park, in the County of Middlesex, for the Invention of "IMPROVE-
MENTS IN THE TREATMENT AND PREPARATION OF CERTAIN CHEMICAL COX-
POUNDS, SO AS TO RENDER THEIR CARRIAGE AND TRANSIT MORE CONVENIENT
AND ECONOMICAL.
Sealed the 23rd January 1872, and dated the 9th November 1871.
PROVISIONAL SPECIFICATION left by the said Thaddeus Hyatt at
the Office of the Commissioners of Patents, with his Petition,
on the 9th November 1871.
I, THADDEUS HYATT, of Gloucester Gardens, Hyde Park, in the
County of Middlesex, do hereby declare the nature of the said Inven-
tion for "IMPROVEMENTS IN THE TREATMENT AND PREPARATION OF CERTAIN
CHEMICAL COMPOUNDS, SO AS TO RENDER THEIR CARRIAGE AND TRANSIT MORE
CONVENIENT AND ECONOMICAL," to be as follows:-
:-
This Invention relates to the treatment and preparation of certain
chemical substances, such, for example, as carbonate of soda, alum, and
other chemical substances containing water of crystallization, in order
that a diminution of their bulk may be obtained, and their transit or
carriage may be rendered more convenient and economical, and consists
in firstly drying the substances to be operated upon, then reducing the

page_text: same to a fine state of division, and submitting them in suitable and
convenient moulds or forms to pressure, hydraulic or otherwise.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thaddeus Hyatt in the Great Seal Patent Office
on the 23rd February 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, THADDEUS
HYATT, of Gloucester Gardens, Hyde Park, in the County of Middlesex,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of November, in the year
of our Lord One thousand eight hundred and seventy-one, in the
35th year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Thaddeus Hyatt, Her special license
that I, the said Thaddeus Hyatt, my executors, administrators, and
assigns, or such others as I, the said Thaddeus Hyatt, my executors,
administrators, or assigns, should at any time agree with, and no
others, from time to time and 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 "IMPROVEMENTS IN
THE TREATMENT AND PREPARATION OF CERTAIN CHEMICAL COMPOUNDS, SO AS TO
RENDER THEIR CARRIAGE AND TRANSIT MORE CONVENIENT AND ECONOMICAL,"
upon the condition (amongst others) that I, the said Thaddeus Hyatt,
my exccutors or administrators, by an instrument in writing under my
hand and seal, 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 Thaddeus Hyatt, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement, that is to say :-
My said Invention relates to the treatment and preparation of certain
chemical substances, such, for example, as carbonate of soda, alum, and

page_text: other chemical substances containing water of crystallization, in order
that a diminution of their bulk may be obtained, and their transit or
carriage may be rendered more convenient and economical, and consists
in firstly drying the substances to be operated upon, then reducing the
same to a fine state of division, and submitting them in suitable and
convenient moulds or forms to pressure, hydraulic or otherwise.
In practically carrying out my Invention I propose to compress the
substances treated in special moulds and in known or specific quantities
or weights, the moulds having ribs or cross ridges made therein, which
will form grooves, channels, or divisions in the compressed cakes, and
will thereby facilitate the breaking or subdivision of a cake into portions
of any given weight, thereby obviating the necessity for weighing, and
thus economising time and facilitating handling. The shape of the
moulds in which the cakes are compressed will depend greatly on the
form of the packing case in which the compressed cakes are to be packed
for the market. When barrels or round packing cases are employed
the cakes should form segments of circles, so as to fit accurately without
loss of space. When rectangular cases are used the cakes may be
rectangular or cubical. The size or weight of the cakes will vary
according to the nature of the substance, and whether they are intended
for use in manufactures or for domestic purposes.
Having now described and particularly ascertained the nature of my
said Invention, and the manner in which the same is or may be used or
carried into effect, I would observe in conclusion that what I consider
to be novel and original, and therefore claim as the Invention secured
to me by the herein-before in part recited Letter Patent is, the pre-
paration and treatment of chemical compounds, such as are herein-before
mentioned, by first submitting them to a drying process, and then to
the action of pressure in suitable moulds, substantially as and for the
purpose herein-before described.
In witness whereof, I, the said Thaddeus Hyatt, have to this my
Specification set my hand and scal, the Twentieth day of February,
One thousand eight hundred and seventy-two.