IMPROVEMENTS IN THE TREATMENT OF SACCHARINE MATTERS
Year: 1869

page_text: In the Matter of Letters Patent granted to WILLIAM THURSTON
WAITE, of Salisbury Square, in the City of London, Fellow of
the Chemical Society of London, for "IMPROVEMENTS IN THE
TREATMENT OF SACCHARINE MATTERS," hearing date the 8th day of
January 1869, No. 62.
DISCLAIMER AND MEMORANDUM OF ALTERATION proposed to be
filed in the Great Seal Patent Office by the said William Thurston
Waite, pursuant to the Statutes in that case made and provided.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, the said
WILLIAM THURSTON WAITE, send greeting.
WHEREAS since the filing of the Specification of the said Letters
Patent I have discovered that the use of some of the neutral insoluble
finely divided precipitates which I therein stated that I employed for
the purpose of my Invention was publicly known before the date of the

page_text: said Letters Patent, and that others of the said precipitates do not in
practice give such satisfactory results as prior experiments led me to
believe at the time of filing my said Specification: And whereas the
only neutral insoluble finely divided precipitate named in my said
Specification which I find to give satisfactory results, and the use of
which was not publicly know before the date of the said Letters Patent,
is phosphate of lime mixed with carbon, or phosphate of lime alono,
that is to say, unmixed with carbon: And whereas I am therefore
desirous of confining my claim to the employment of this precipitate.
NOW THEREFORE KNOW YE, that I, the said William Thurston
Waite, do hereby, for the reasons aforesaid, disclaim and alter the
following parts of my said Specification, that is to say, in line 34,
page 3 of the printed copy of my said Specification I insert the word
"a" before the word "certain;" in line 35, page 3, I substitute the
word "substance" for the word "substances;" in line 2, page 4, I
substitute the words "the said " for the word "a;" in line 4, pago 4, I
substitute the word "precipitate" for the word "precipitates;" in
line 5, page 4, I strike out the words "are hydrate of peroxide of iron,"
and I insert the word "is" after the word "Invention;" in line 6,
page 4, I strike out the words "phosphate of iron;" in the said line 6
I insert the word "or" before the last word "phosphate," and in the
following line 7 I insert the word "alone" after the word "lime;" in
the said line 7 I strike out the words "phosphate of alumina and car-
bonate of iron;" in line 8 I strike out the words "to hydrate of peroxide
of iron and;" in line 9 I substitute the words "it gives." for the words
'they give;" in lines 27 and 28, page 4, I strike out the words
"alumina, oxide of iron, or;" in lines 29 to 32 I strike out the words
"In preparing any other finely divided precipitate for the purpose
my Invention I take a solution of the base or any soluble compound
"of the base and precipitate by a solution of the acid or any soluble
compound of the acid ;" in line 33 I substitute the word "precipitate"
for the word "precipitates;" in lines 4 and 5, page 5, I strike out
the words "The precipitates herein-before mentioned may either be
employed singly, or two or more of them may be used together;" in
line 18, page 5, I strike out the words "of each and all;" in line 19 I
substitute the word "precipitate" for the word "precipitates," and I
insert after the word "mentioned" in the same line the words "that is
"
"
66
"
of

page_text: "to say, phosphate of lime mixed with carbon or phosphate of lime
"alone;" in line 24 I substitute the word "a" for the words "one of
tho;" in line 25 I substitute the word "precipitate" for the word
"procipitates," and I insert after the said word "précipitate" the words
"of phosphate of lime mixed with carbon, or of phosphate of limo
"alone;" and in the same line 25 I strike out the words "horein-before
mentioned."
And the said Specification when altered as proposed by me by
Disclaimer and Memorandum of Alteration will read as follows:-
"TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
"THURSTON WAITE, of Salisbury Square, in the City of London,
"Fellow of the Chemical Society of London, send greeting.
68
"WHEREAS Her most Excellent Majesty Queen Victoria, by Her
"Letters Patent, bearing date the Eighth day of January, in the year
"of our Lord One thousand eight hundred and sixty-nine, in the thirty-
"second year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said William Thurston Waite, Her
special licence that I, the said William Thurston Waite, my executors,
"administrators, and assigns, or such others as I, the said William
"Thurston Waite, my executors, administrators, and assigns, should at
any timo 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 "IMPROVEMENTS IN THE TREATMENT OF SACCHARINE MATTERS,"
upon the condition (amongst others) that I, the said William Thurston
Waito, 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.
at
"NOW KNOW YE, that I, the said William Thurston Waite, do
hereby declare the nature of my said Invention, and in what manner
"the same is to be performed, to be particularly described and ascer
"tained in and by. the following statement thereof, that is to say:
"The object of my Invention is to remove the color and impurities

page_text: "from saccharine matters and to assist the filtering of the saccharine
" matters.
"My Invention consists in the employment of a certain neutral
"insoluble finely divided substance prepared by precipitation, or in the
" employment of an intimate admixture of an acid compound and a t
"basic compound in such proportions that when the mixture is put
" into water or into a saccharine solution it will form the said neutral
"insoluble finely divided precipitate.
"The neutral insoluble finely divided precipitate which I employ for
"the purpose of my Invention is phosphate of lime mixed with carbon, ]
"or phosphate of lime alone. Of these I give the preference to
phosphate of lime mixed with carbon, as I have found from practice
" that it gives the best results.
"
"To manufacture an insoluble precipitate of phosphate of lime mixed
"with carbon I proceed by preference as follows:-I take, say, 100 1
"
"
' parts by weight of powdered animal charcoal, 50 parts of sulphuric
à acid, and sufficient water, say, 1500 parts. I mix them, allow them
" to stand for a time, and then add about 26%, parts of lime, stirring the
"whole well together. The phosphate of lime which was in the
"charcoal is thus formed into an insoluble finely divided precipitate.
"After it has been washed and allowed to settle and the water poured
"off this precipitate is ready to be put into the saccharine solution, for
"the purpose herein-before stated; or the precipitate may be partially
"dried and then added to the saccharine solution. Instead of animal
"charcoal any other source of phosphate of lime, such as coprolite,
"apatite, and guano, may be employed, but when any of these last-
"named substances are used the product is phosphate of lime unmixed
"with carbon. Instead of sulphuric acid any other acid, such as hydro-
"chloric, which will render the phosphate of lime soluble, may be used,
" and instead of lime any other base or alkali, such as soda, which will
"make a finely divided precipitate, may be employed.
"The manner in which the finely divided precipitate may be employed
" for treating the saccharine matters is as follows:-I put the precipitate
" into the water in which the sugar is to be dissolved, I then heat the
"water to the usual temperature (or the water may be heated to the
"usual temperature before the precipitate is put therein), and I then
“add the sugar, which becomes dissolved, and I finally filter as usual.

page_text: 'Or I first prepare the saccharine solution, or take a saccharine solution
already prepared, and then add the precipitate, or the precipitate may
'be mixed with sugar and the mixture put with water.
"The proportion of precipitate I employ in the saccharine solution is
about 2 to 5 per cent. of the weight of the dry sugar, the weight of
the precipitate being calculated as dry, but the quantity may be varied
"according to requirement.
"By the terms neutral and insolublo, as herein-before used, I do not
"mean absolutely but practically neutral and insoluble, that is to say,
far neutral and insolublo that when put into water or into a neutral
"saccharing solution and the liquor filtered the filtrate will not show
any action to test papers.
"And having now described the nature of my said Invention, and in
"what manner the same is to be performed, I declare that I claim as
my "Improvements in the Treatment of Saccharine Matters,"_
"First. The employment of the neutral insoluble finely divided pro-
cipitate herein-before mentioned, that is to say, phosphate of lime
"mixed with carbon, or phosphate of lime alone, for the purpose
"herein-before explained.
"Second. The employment for the purpose herein-before explained of
"an intimate admixture of an acid compound and a basic compound in
"such proportions that when the mixture is put into water or into a
"saccharine solution it will form a neutral insoluble finely divided
"precipitate of phosphate of limo mixed with carbon, or of phosphate
"of lime alone.
"In witness whereof, I, the said William Thurston Waite, have
hereunto set my hand and seal, this Third day of July One
he hundred and sixte.nino
"WILLIAM THURSTON WAITE, F.O.S. (L.s.)"
In witness whereof, I, the said William Thurston Waito, have
hereunto set my hand and seal, this Thirtieth day of May One
thousand eight hundred and seventy.
WILLIAM THURSTON WAITE, F.C.S. (L.s.)

page_text: To the Clerk of the Patents for Inventions.
I hereby grant my flat, giving leave to the above-named William
Thurston Waite to file in the Great Seal Patent Office, with the Speci-
fication to which the same relates, the above written Disclaimer and
Memorandum of Alterations.
23rd June 1870.
JOHN DUKE COLERIDGE,
Solicitor-General.

page_text: LETTERS PATENT to William Thurston Waite, of Salisbury Square,
in the City of London, Fellow of the Chemical Society of London,
for the Invention of "IMPROVEMENTS IN THE TREATMENT OF SACCHARINE
MATTERS."
Sealed the 25th June 1809, and dated the 8th January 1869.
PROVISIONAL SPECIFICATION left by the said William Thurston
Waite at the Office of the Commissioners of Patents, with his
Petition, on the 8th January 1869.
I, WILLIAM THURSTON WAITE, of Salisbury Square, in the Oity of
London, Fellow of the Chemical Society of London, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN THE TREATMENT OF
SACCHARINE MATTERS," to be as follows:-
The object of my Invention is to remove the color and impurities
from saccharine matters, and to assist the filtering of the saccharine
matters.

page_text: My Invention consists in the employment of certain neutral insoluble
finely divided substances prepared by precipitation, or in the employ-
ment of an intimate admixture of an acid compound and a basic
compound in such proportions that when the mixture is put into water
or into a saccharine solution it will form a neutral insoluble finely
divided precipitate.
Among the neutral insoluble finely divided precipitates which I can
employ for the purpose of my Invention I may mention phosphato
of lime, phosphate of lime mixed with charcoal, phosphate of iron,
phosphate of alumina, phosphate of magnesia, silicate of magnesia,
silicates of alumina, silicate of lime, silicate of iron, carbonate of iron,
and hydrate of iron.
J
To manufacture an insoluble precipitate of phosphate of lime mixed
with charcoal I proceed by preference as follows:-I take, say, 100
parts by weight of powdered charcoal, 50 parts of sulphuric acid, and
250 parts of water. I mix them, allow them to stand for a time,
and then add about 28 parts of lime. The phosphate of lime which
was in the charcoal is thus formed into an insoluble finely-divided
precipitate. After it has been washed and allowed to settle and the
clear water poured off, this precipitate is ready to be put into the
saccharine solution for the purpose herein-before stated. Instead of
charcoal any other source of phosphate of lime, such as coprolite,
apatite, and guano, may be employed; instead of sulphuric acid any
other acid, such as hydrochloric and phosphoric, which will render the
phosphate of lime soluble, may be used; and instead of lime any:
other base or alkali, such as alumina or oxide of iron, which will
make a finely divided precipitate, may be employed. In preparing
any other finely divided precipitate for the purpose of my Invention
I take a solution of the base or any soluble compound of the base,.
and precipitate by a solution of the acid or any soluble compound of
the acid. The proportion of precipitate I employ in the saccharine
solution is about 5 to 10 per cent. (calculated dry).
By the terms neutral and insoluble as herein-before used, I do not
mean absolutely but practically neutral and insoluble.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Thurston Waite in the Great Seal Patent
Office on the 8th July 1869.
•
.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
THURSTON WAITE, of Salisbury Squaro, in the Oity of London, Fellow
of the Chemical Society of London, send greoting.
די
°
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighth day of January, in the year of
our Lord One thousand eight hundred and sixty-nine, in the thirty-
second year of Her reign, did, for Herself, Iler heirs and successors,
give and grant unto me, the said William Thurston Waito, Her special
licence that I, the said William Thurston Waite, my executors,
administrators, and assigns, or such others as I, the said William
Thurston Waite, 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 Inven-
tion for "IMPROVEMENTS IN THE TREATMENT OF SACCHARINE MATTERS," upon
the condition (amongst others) that I, the said William Thurston
Waite, my executors or administrators, by an instrument in writing
under my, or their, or one of their hands and scals, should parti-
cularly 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 monthą
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, tho said William Thurston Waite, do
liereby 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 thereof, that is to say :-
The object of my Invention is to remove the color and impurities
from saccharine matters, and to assist the filtering of the saccharinę
matters.
My Invention consists in the employment of certain. neutral insoluble
finely divided substances prepared by precipitation, or in the employment
of an intimato admixture of an acid compound and, a basic compound

page_text: in such proportions that when the mixture is put into water or into a
saccharine solution it will form a neutral insoluble finely divided
precipitate.
The neutral insoluble finely divided precipitates which I employ
for the purpose of my Invention are hydrate of peroxide of iron,
phosphate of lime mixed with carbon, phosphate of iron, phosphate
of lime, phosphate of alumina, and carbonate of iron. Of these I
give the preference to hydrate of peroxide of iron and to phosphate of
lime mixed with carbon, as I have found from practice that they give
the best results.
To manufacture an insoluble precipitate of phosphate of lime mixed
with carbon I proceed by preference as follows:-I take, say, 100
parts by weight of powdered animal charcoal, 50 parts of sulphuric
acid, and sufficient water, say, 1,500 parts. I mix them, allow them
to stand for a time, and then add about 26 parts of lime, stirring
the whole well together. The phosphate of lime which was in the
charcoal is thus formed into an insoluble finely divided precipitate.
After it has been washed and allowed to settle and the water poured
off, this, precipitate is ready to be put into the saccharine solution
for the purpose herein-before stated, or the precipitate may be partially
dried and then added to the saccharine solution. Instead of animal
charcoal any other source of phosphate of lime, such as coprolite,
apatite, and guano, may be employed, but when any of these last-
named substances are used the product is phosphate of lime unmixed
with carbon. Instead of sulphuric acid any other acid, such as hydro-
chloric, which will render the phosphate of lime soluble may be used;
and instead of lime any other base or alkali, such as alumina, oxide
of iron or soda, which will make a finely divided precipitate, may be
employed. In preparing any other finely divided precipitate for tho
purpose of my Invention I take a solution of the base or any soluble
compound of the base and precipitate by a solution of the acid or any
soluble compound of the acid.
The manner in which the finely divided precipitates may be employed
for treating the saccharine matters is as follows:-I put the precipitate
into the water in which the sugar is to be dissolved; I then heat the
water to the usual temperature (or the water may be heated to the usual
temperature before the precipitate is put therein), and I then add the
sugar which becomes dissolved, and I finally filter as usual. Or I first

page_text: prepare the saccharine solution or take a saccharine solution already
prepared and then add the precipitato; or the precipitate may be mixed
with sugar and the mixturo put with water.
The precipitates herein-before mentioned may either be employed
singly, or two or more of them may be used together. The proportion of
precipitato I employ in the saccharine solution is about 2 to 5 per
cent. of the weight of the dry sugar, the weight of the precipitate being
calculated as dry, but the quantity may be varied according to
requirement.
By the terms neutral and insoluble as herein-before used I do not
mean absolutely but practically neutral and insoluble, that is to say, so
far neutral and insoluble that when put into water or into a neutral
saccharine solution and the liquor filtered the filtrate will not show any
action to test papers.
And having now described the nature of my said Invention, and in
what manner the same is to be performed, I declare that I claim as my
"Improvements in the Treatment of Saccharino Matters,"―
First. The employment of each and all of the neutral insoluble fincly
divided precipitates herein-before mentioned, for the purpose herein-
before explained.
Second. The employment for the purpose herein-before explained of an
intimato admixture of an acid compound and a basic compound in such
proportions that when the mixturo is put into water or into a saccharine
solution it will form one of the neutral insolublo finely divided pre-
cipitates hercin-before mentioned.
In witness whereof, I, the said William Thurston Waite, havo
hereunto, set my hand and scal, this Third day of July, Ono
thousand eight hundred and sixty-nine.
WILLIAM THURSTON WAITE, F.C.S. (L.S.)