IMPROVEMENTS IN TREATING FIBROUS MATERIAL TO REMOVE THEREFROM THE INCRUSTATING AND OTHER FOREIGN SUBSTANCES CONTAINED THEREIN
Year: 1882

page_text: LETTERS PATENT to Frank Wirth, of the Firm of Wirth and Company,
Patent Solicitors, at Frankfort-on-the-Main, in the Empire of Germany, for an
Invention of "IMPROVEMENTS IN TREATING FIBROUS MATERIAL TO REMOVE
THEREFROM THE INCRUSTATING AND OTHER FOREIGN SUBSTANCES CONTAINED
THEREIN." A communication from the Society for the Manufacture of Wood-
pulp at Grellingen, in the Republic of Switzerland.
PROVISIONAL SPECIFICATION left by the said Frank Wirth at the Office of
the Commissioners of Patents on the 4th February 1882.
FRANK WIRTII. of the Firm of Wirth and Company Patent Solicitors, at
Frankfort on the Main, in the Empire of Germany. "IMPROVEMENTS IN TREATING
FIBROUS MATERIAL TO REMOVE THEREFROM THE INCRUSTATING AND OTHER
FOREIGN SUBSTANCES CONTAINED THEREIN." [A communication from the Society
for the Manufacture of Wood-pulp at Grellingen, in the Republic of Switzerland.]
This Invention relates to a process for treating fibrous material such as wood,'
straw, alpha or other fibrous material of vegetable or animal origin and has for its
object to remove from these materials the incrustating and other foreign substances
contained therein, in order to render such materials more suitable for their further
trentment for industrial purposes.
In carrying the said Invention into practice I place the material to be treated,
together with a watery solution of ammonia of about 0.95 specific gravity, more or
less, in a vessel which afterwards is closed hermetically and its contents are boiled
with or without pressure. If under pressure it may be about from four (4) to
five (5) atmospheres more or less. The period during which the mass in the vessel
is boiled under pressuro varies according to the nature of the fibre to be treated.
In general a period of from four (4) to eight (8) hours will be suitable.
The boiling process being terminated, the vessel is opened and the contents are
removed therefrom, when the fibrous material will have in a high degree been
freed from its incrustating and other foreign substances. If the fibre treated in
the said manner has contained resin or the like substances, this resin is not
materially decomposed by the ammoniacal solution but only dissolved and may be
separated from the solution after the latter has become cool, when the resin will
collect in bulbs on the surface of the liquid and can easily be removed therefrom
and may be sold in the market.
If by one boiling process with the ammoniacal liquor the fibre has not sufficiently
been desincrustated the process is repeated until the desired degree of desincrustation
has been obtained.
'

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frank Wirth in the Great Seal Patent Office on the 3rd August
1882.
FRANK WIRTH of the Firm of Wirth and Company, Patent Solicitors, at
Frankfort on the Main in the Empire of Germany. "İMPROVEMENTS IN TREATING
FIBROUS MATERIAL TO REMOVE THEREFROM THE INCRUSTATING AND OTHER
FOREIGN SUBSTANCES CONTAINED THEREIN." A communication from the Society
for the Manufacture of Wood-pulp at Grollingen in the Republic of Switzerland.
- This Invention relates to a process of treating fibrous material such as wood,
straw, alpha, or other fibrous material of vegetable or animal origin and has for
its object to remove from these materials the incrustating and other foreign
substances contained therein in order to render such materials more suitable for
their further treatment for industrial purposes.
In carrying the said Invention into practice I place the material to be treated
together with a watery solution of ammonia of about 0.95 specific gravity, more
or less, in a vessel which afterwards is closed hermetically and its contents are
boiled with or without pressure. If under pressure it may be about from four (4)
to five (5) atmospheres more or less. The period during which the mass in the
vessel is boiled under pressure varies according to the nature of the fibre to be
treated. In general a period of from four (4) to eight (8) hours will be suitable.
The boiling process being terminated, the vessel is opened and the contents are
removed therefrom, when the fibrous material will have in a high. degree been
freed from its incrustating and other foreign substances. If the fibre treated in
the said manner has contained resin or the like substances this resin is not
materially decomposed by the ammonical solution but only dissolved and may be
separated from the solution after the latter has become cool when the resin will
collect in bulbs on the surface of the liquid and can easily be removed therefrom
and may be sold in the market.
If by one boiling process with the ammoniacal liquor the fibre has not been
sufficiently disincrustated the process is repeated until the desired degree of
disincrustation has been obtained.
Having thus fully described the said Invention and the manner of performing
the same I wish it understood that I do not claim the use of ammoniacal liquor in
combination with other alkaline materials but I claim
The process of treating fibrous material of any kind to remove therefrom the
incrustating and other foreign substances contained therein, by boiling it with a
watery solution of ammonia in a closed vessel with or without pressure.
'
In witness whereof I the said Frank Wirth have hereunto set my hand and
seal this Twenty ninth day of July in the year of our Lord One thousand
eight hundred and eighty two.
An 17 KITDAT