AN IMPROVEMENT IN THE MANUFACTURE OF PAPER PULP OR PAPER
Year: 1883

page_text: LETTERS PATENT to Herbert John Haddan, of Kensington, Middlesex for an
Invention of AN IMPROVEMENT IN THE MANUFACTURE OF PAPER PULP OR
PAPER communicated to him from abroad by Constant Coster, of Bruxelles, in
the kingdom of Belgium
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at the
Office of the Commissioners of Patents on the 17th September 1883.
HERBERT JOHN HADDAN, of Kensington, Middlesex,
"AN IMPROVEMENT IN
THE MANUFACTURE OF PAPER PULP OR PAPER," a communication to me from
abroad by Constant Coster, of Bruxelles, in the kingdom of Belgium,
This invention relates to the manufacture of paper-pulp or paper by using the
stems and tubercles of Jerusalem artichokes either together or separately instead of
the materials hitherto employed, and by processes similar to those employed in the
manufacture of paper pulp from straw or wood.
For this purpose fresh artichoke is cut to pieces by means of a root knife and
afterwards dried and powdered; or it may be boiled in water and subsequently
crushed. Or it may be rasped and either dried or subjected to strong pressure in a
hydraulic press or to the action of a centrifugal machine for the purpose of
extracting the greatest part of the water contained in the tubercle. Treated in
this way the Jerusalem artichoke may be advantageously employed for the
manufacture of paper either alone or mixed with other materials.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Herbert John Haddan in the Patent Office on the 17th March
1884.
"
HERBERT JOHN HADDAN, of Kensington, Middlesex, AN IMPROVEMENT IN
THE MANUFACTURE OF PAPER-PULP OR PAPER," a communication to me from
abroad by Constant Coster, of Bruxelles, in the kingdom of Belgium,
This invention relates to the manufacture of paper-pulp and paper by the use of
the stems and tubercles of the Jerusalem artichoke, either together or separately.
In the manufacture hereinafter described the ligneous stems of the Jerusalem
artichoke serve to replace the various ligneous materials hitherto employed in the
manufacture of paper-pulp, such as straw, woodfibre and alfa.
In carrying out this invention I may apply the same process as usually applied
in the manufacture of paper-pulp from straw or wood fibre, but preferably I use
one of the following processes:
The stems of the Jerusalem artichoke may either be treated immediately when
gathered and in a fresh state, by subjecting them to maceration, so that only the
product thereby obtained need be sent to the paper mill, where the mixture is
'made with rags or between substitutes. Or the stems, after having been dried on
the spot and thus brought into a ligneous state, may be treated with soda in the
same way as wood, in retorts, boilers or cylinders working with sufficient steam
pressure to cause the complete disintegration of the stems. This disintegration of
the stems may also be obtained by the use of superheated steam.
The tubercle of the Jerusalem artichoke composed (according to Payen) of
cellulose and starch, may be treated by cutting the same, when fresh, into slices by
means of a root cutter, or by drying and subsequently reducing the same to
powder, or by first boiling and subsequently crushing the same; or the tubercles
may be rasped, then dried and subjected to a strong pressure by means of a
hydraulic press or to the rapid action of a centrifugal machine for the purpose of
removing the greatest part of the water contained in the tubercle.
The tubercle of the Jerusalem artichoke, whether cut, rasped, dried, moist,
:crushed or reduced to powder by means of a mill or by any suitable process, or in
.whatever state it may be, (fresh or boiled) constitutes an excellent material for the
manufacture of paper, either alone or mixed with other substances.
The tubercles of the Jerusalem artichoke will in many instances replace the
potato starch hitherto almost generally employed in the manufacture of paper.