AN IMPROVED METHOD OF TREATING FIBROUS MATERIALS FOR THE MANU- FACTURE OF PULP FOR PAPER
Year: 1873

page_text: LETTERS PATENT to George Noble, of Thurlby House, Woodford
.
Bridge, in the County of Essex, Gentleman, for the Invention of
"AN IMPROVED METHOD OF TREATING FIBROUS MATERIALS FOR THE MANU-
FACTURE OF PULP FOR PAPER."
PROVISIONAL SPECIFICATION left by the said George Noble at the
Office of the Commissioners of Patents, with his Petition, on the
18th February 1873.
I, GEORGE NOBLE, of Thurlby House, Woodford Bridge, in the
County of Essex, Gentlemen, do hereby declare the nature of the said
Invention for "AN IMPROVED METHOD OF TREATING FIBROUS MATERIALS FOR THE
MANUFACTURE OF PULP FOR PAPER," to be as follows, that is to say :- i
This Invention consists in an improved method of treating fibrous
materials, including plants in the ripe or unripe state, videlicet, I steep
or soak the stems or straw of fibrous materials such as oats, barley,
wheat, maize, rye, diss, alfa, urtica, sedge, juncaceæ, cyperucex,
hybiscus, papyrus, chamaerops, bromeliaceæ, crotalaria, corchorus,

page_text: musaceæ, bast, jute, phormium tenax, rice straw, flax, Italian, New
Zealand, and Esparto grass, either in the green or unripe state, and also
in the ripe, brown; or dry state, or at any other period of growth between
the ripe and unripe state; and also rags, cotton, and other fibrous
materials, such as bamboo and sugar cane, willow, spruce, and American
white wood, aspen, and pine, in a solution of warm water and caustic
soda in the proportion of about two hundred pounds by weight of caustic
soda to one ton of fibrous material pressed close when treating the
materials ordinarily employed for making pulp for paper, or about three
hundred pounds of caustic soda when treating palm leaf and other
analogous substances, and for wood from three hundred to four hundred
pounds of caustic soda.
The time for steeping depends upon the nature and size of the sub-
stance, and may vary from twelve to twenty-four hours.
After the material has been sufficiently steeped a great part of the
alkaline solution remaining may be drawn off and passed into another
steeping vessel containing a supply of fibrous material to be operated
upon. The material that has been steeped is then placed in a boiler
where it is boiled, with the addition of a quantity of water necessary for
that process, for about two to four hours, also pressed close.
The alkaline solution transferred to the second steeping pan is made
up by a further addition of alkali and water to the requisit degree of
strength and quantity, and the same operation is repeated.
Instead of transferring the fibrous material for treatment to a second
vessel or boiler, a steeping vessel may be used which will serve as a
boiler.
SPECIFICATION in pursuance of the conditions of the Letters Patent;
filed by the said George Noble in the Great Seal Patent Office,
on the 16th August 1873.
3
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE 30
NOBLE, of Thurlby House, Woodford Bridge, in the County of Essex,
Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of February, in the year

page_text: of our Lord One thousand. eight hundred and seventy-three, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said George Noble, Her special
licence that I, the said George Noble, my executors, administrators,
and assigns, or such others as I, the said George Noble, 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 "AN IMPROVED
METHOD OF TREATING FIBROUS MATERIALS FOR THE MANUFACTURE OF PULP FOR
PAPER," upon the condition (amongst others) that I, the said George
Noble, 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.
.
1
NOW KNOW YE, that I, the said George Noble, 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:—
This Invention consists in an improved method of treating fibrous
materials, including plants in the ripe or unripe state, videlicet, I steep
or soak the stems or straw of fibrous materials, such as the stems or
straw of oats, barley, wheat, maize, rye, diss, alfa, urtica, sedge, jun-
caceæ, cyperuce, hybiscus, papyrus, chamaerops, bromeliacea, crota-
laria, corchorus, musaceæ, bast, jute, phormium tenax, and of rice and
flax, Italian, New Zealand, and Esparto grass, either in the green or
unripe state, and also in the ripe, brown, or dry state, or at any other
period of their growth between the ripe and unripe state; and also rags,
cotton, and other fibrous materials, such as bamboo and sugar cane, the
willow, spruce, and American white wood, the aspen, the pine, the lime,
and the plane in a solution of warm water and caustic soda in the pro-
portion of about two hundred pounds by weight of caustic soda to ono
ton of fibrous material, pressed close when treating the materials
ordinarily employed for making pulp for paper. When treating palm
leaf and other analogous substances, I use about three hundred pounds of

page_text: caustic soda; and for wood from three hundred to four hundred pounds
of caustic soda to one ton of fibrous material.
The time for steeping depends upon the nature and strength or
toughness of the material, and varies from twelve to twenty-four
hours.
After the material has been sufficiently steeped a great part of the
alkaline solution remaining may be drawn off and passed into another
steeping vessel containing a supply of fibrous material to be operated
upon. The material that has been steeped is then placed in a boiler,
where it is boiled with the addition of the quantity of water necessary
for that purpose for about two to four hours, and it is then pressed, but
so as to allow the passage of water through the material.
The alkaline solution transferred to the second steeping pan is made
up by a further addition of alkali and water to the requisite degree of
strength and quantity, and the same operation is repeated..
Instead of transferring the fibrous material for treatment to a second
vessel or boiler, a steeping vessel may be used which will also serve as a
boiler.
In witness whereof, I, the said George Noble, have hereto set my
hand and seal, this Sixteenth day of August, in the year of our
Lord One thousand eight hundred and seventy-three.
GEORGE NOBLE (1.0)