Process for the Treatment of Resinous Cane for the Removal of the Resin therefrom.
Year: 1898

page_text: PROVISIONAL DIMITRATION
Process for the Treatment of Resinous Cane for the Removal of the
Resin therefrom.
I, CHARLES DENTON ABEL, of Birkbeck Bank Chambers, Southampton Buildings,
in the County of London, Consulting Engineer and Chartered Patent Agent, do
hereby declare the nature of this invention (as communicated to me from abroad
by H. C. Meyer, Junior, of Harburg, on the Elbe, Germany,) to be as follows:-
There are certain kinds of cane which contain resinous matter that reduces
their value.
The present invention relates to an improved process for enabling the outer
resinous layer to be removed, and thereby to improve the quality of the cane
for further use.
By this improved process consequently the inferior resinous canes are rendered
of the same value as the generally used better qualities.
The process consists in first treating the cane with warm hydrofluoric acid,
whereby the removal of the silicic acid is effected, and then subjecting the
cane to frictional action for the removal of the resinous coating.
Experiments have shown that by the above treatment the resin is converted
into such a condition that it can be removed by mechanical rubbing and washing,
leaving only very small residues that have no detrimental action.
Hitherto the removal of the silica of the cane by means of hydrofluoric acid
was generally effected in the cold. In the case of resinous canes however the
resinous coating would prevent the action of the hydrofluoric acid upon the
silica coating; on this account it was heretofore necessary to first desolve and
remove the resin by treatment with suitable solvents, before the removal of the
silica was effected, an operation that had certain disadvantageous effects. The
separate treatment for the removal of the resinous coating before the removal of the
silica is dispensed with according to the present invention and is replaced by
the much simpler and cheaper operation of a thorough mechanical cleansing
after removal of the silica.
In carrying out the process, a quantity of water is heated to from 60° to 70° C,
and after adding hydrofluoric acid thereto, the cane is introduced. The charge is
preferably allowed to cool, and the cane, freed from silica, is then subjected to
a rubbing operation with sand and water.
Dated this 19th day of September 1898.
ABEL & IMRAY,
Agents for the Applicant.

page_text: Process for the Treatment of Resinous Cane for the Removal of the
Resin therefrom.
I, CHARLES DENTON ABEL, of Birkbeck Bank Chambers, Southampton Buildings,
in the County of London, Consulting Engineer and Chartered Patent Agent, do
hereby declare the nature of this invention (as communicated to me from abroad
by H. C. Meyer, Junior, of Harburg, on the Elbe, Germany,) and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement;-
There are certain kinds of cane which contain resinous matter that reduces
their value.
The present invention relates to an improved process for enabling the outer
resinous layer to be removed, and thereby to improve the quality of the cane
for further use.
By this improved process consequently the inferior resinous canes are rendered
of the same value as the generally used better qualities.
The process consists in first treating the cane with warm hydrofluoric acid,
whereby the removal of the silicic acid is effected, and then subjecting the
cane to frictional action for the removal of the resinous coating.
Experiments have shown that by the removal of the silicic acid by means of
hydrofluoric acid, the resin is converted into such a condition that it can be
removed by mechanical rubbing and washing, leaving only very small residues
that have no detrimental action.
Hitherto the removal of the silica of the cane by means of hydrofluoric acid
was generally effected in the cold. In the case of resinous canes however the
resinous coating would prevent the action of the hydrofluoric acid upon the
silica coating; on this account it was heretofore necessary to first desolve and
remove the resin by treatment with suitable solvents, before the removal of the
silica was effected, an operation that had certain disadvantageous effects. The
separate treatment for the removal of the resinous coating before the removal of the
silica is dispensed with according to the present invention and is replaced by
the much simpler and cheaper operation of a thorough mechanical cleansing
after removal of the silica.
In carrying out the process, a quantity of water is heated to from 60° to 70° C,
and after adding hydrofluoric acid thereto, the cane is introduced. The charge is
preferably allowed to cool, and the cane thus freed from silica, is after removal
from the liquid mechanically treated by rubbing with the aid of sand and water,
whereby the resinous coating is removed.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed, I declare that what I
claim is:
-
Process for the removal of the resinous coating from resinous cane consisting
in treating the cane with warm hydrofluoric acid and then subjecting it to
mechanical action such as rubbing, whereby the resinous coating will be removed,
substantially as described.
T
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