A SPECIAL PROCESS OR METHOD OF OPERATING UPON STRAW, ESPARTO, FLAX, AND OTHER SIMILAR FIBROUS MATERIALS FOR THE MANU- FACTURE OF PULP POR PAPER
Year: 1873

page_text: LETTERS PATENT to Frederick Burnett Houghton, of No. 40, Borough
Road, in the Borough of Southwark, and County of Surrey, for the
Invention of "A SPECIAL PROCESS OR METHOD OF OPERATING UPON STRAW,
ESPARTO, FLAX, AND OTHER SIMILAR FIBROUS MATERIALS FOR THE MANU-
FACTURE OF PULP POR PAPER."
Sealed the 3rd October 1878, and dated the 9th April 1873.
PROVISIONAL SPECIFICATION left by the said Frederick Burnett
Houghton at the Office of the Commissioners of Patents, with his
Petition, on the 9th April 1873.
I, FREDERICK BURNETT HOUGHTON, of No. 40, Borough Road, in the
Borough of Southwark, and County of Surrey, do hereby declare the
nature of the said Invention for "A SPECIAL PROCESS OR METHOD OF OPERATING
UPON STRAW, ESPARTO, FLAX, AND OTHER SIMILAR FIBROUS MATERIALS FOR THE
MANUFACTURE OF PULP FOR PAPER," to be as follows:-
This Invention relates to a special treatment of straw, esparto, flax,
and other similar fibrous materials for converting it or them into pulp
suitable for the manufacture of paper, and consists in boiling the
material in a revolving or a stationary vessel in a caustic alkali of a

page_text: strength varying from 2° to 4° Beaume, or in a liquor of a strength not
higher than 4° Beaume after being weakened by condensation.
The boiling is effected by the direct application of high pressure
steam to the liquor, preferably superheated steam, or by steam pipes or
hot water circulation, or by fire, as found convenient.
The advantages gained by my special method here described are,—
1. Only about one half the usual quantity of caustic alkali is required
for reducing straw, esparto, flax, or other similar fibres.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Frederick Burnett Houghton in the Great Seal
Patent Office on the 8th October 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FREDERICK
BURNETT HOUGHTON, of No. 40, Borough Road, in the Borough of
Southwark, and County of Surrey, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of April, in the year of our
Lord One thousand eight hundred and seventy-three, in the thirty-sixth
year of Her reign, did, for Herself, Her heirs and successors, give and 2
grant unto me, the said Frederick Burnett Houghton, Her special
licence that I, the said Frederick Burnett Houghton, my executors,
administrators, and assigns, or such others as I, the said Frederick
Burnett Houghton, 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 SPECIAL PROCESS OR METHOD OF OPERATING UPON STRAW,
ESPARTO, FLAX, AND OTHER SIMILAR FIBROUS MATERIALS FOR THE MANUFACTURE
OF PULP FOR PAPER," upon the condition (amongst others) that I, the said
Frederick Burnett Houghton, 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

page_text: 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 Frederick Burnett Houghton, 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 thereof, that is to say:-
This Invention relates to a special treatment of straw, esparto, flax,
and other similar fibrous materials for converting it or them into pulp
suitable for the manufacture of paper, and consists in boiling the
material in a revolving or a stationary vessel in a caustic alkali of a
strength varying from 2° to 4° Beaume, or in a liquor of a strength
not higher than 4° Beaume, after being weakened by condensation.
The boiling is effected by the direct application of high-pressure
steam to the liquor (preferably superheated steam), or by steam pipes
or hot water circulation, or by fire, as found convenient.
The advantages gained by my special method here described are,-
1. Only about one half the usual quantity of caustic alkali is
required for reducing straw, esparto, flax, or other similar fibres.
2. The strength of the fibre is not so much reduced.
And 3. The boiling requires less time.
Having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I claim the
special process or method as herein-before described of boiling straw,
esparto, flax, and other similar fibrous materials in caustic alkali, ley,
or liquor, of a strength not below 2° Beaume, nor above 4° Beaume, for
the manufacture of pulp for paper.
In witness whereof, I, the said Frederick Burnett Houghton, have
hereunto set my hand and seal, this Seventh day of October One
thousand eight hundred and seventy-three.
FB HOUGHTON (LS)