Year: 1887

page_text: Date of Application, 10th Nov., 1887
Complete Left, 20th Dec., 1887
Complete Accepted, 20th Jan., 1888
I, DAVID MASON of 212 St. Vincent Street Glasgow in the county of Lanark.
Scotland, Patent Agent, do hereby declare the nature of this invention to be as
follows:-
This Invention relates to treating wool so as to clear it of impurities, thistles &e.
and render it soft and ready for the combing and spinning operations.
The washing of the wool in a bath of soda, which till now preceeded the carboniza-
tion has the inconvenience of clearing the wool from the coating of animal grease
which covers it, so that the pure wool is cleared of this grease and injured by the acids
employed for the carbonization; this manipulation causes the wool to curl and felt
and consequently to augment the difficulties which present themselves in the combing
and spinning operations. These inconveniences are overcome by the following process
constituting this Invention. The wool is softened in a bath of lukewarm water about
30° Celsius; this bath clears it from the impurities which adhere to it and preserves
its animal grease. For the carbonization weaker acids are employed; the grease
which covers the wool protecting it against effects of these acids. The carbonization
for clearing off the thistles &c. can only be made under a temperature averaging
about 45 to 50° Celsius, then, in order to entirely remove the acids one operates in a
cold bath of Soda of 4° Baume; this same bath employed hot would injure the wool.
Dated this 9th day of November 1887.
DAVID MASON, C.E.,
Patent Agent,
Glasgow.

page_text: I, DAVID MASON of 212 Saint Vincent Street, Glasgow, in the county of Lanark,
Scotland, Patent Agent, do hereby declare the nature of this 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 relates to the treatment of wool so as to clear it of impurities such
as thistles, dung and earth, which adhere to it, without injuring the wool by the acids,
as at present practiced generally.
The washing of the wool in a bath of soda, a washing, which up to the present
preceeded the carbonization, has the inconvenience of clearing the bits of wool from
the coating of animal grease which covers it, so that the pure wool is cleared of this
grease and injured by the acids which are employed for the carbonization; this
manipulation causes the wool to curl and felt and consequently augment the difficulties
which present themselves in the combing operations and spinning.
In order to avoid these inconveniences the inventors adopt the following process.
The wool is softened in a bath of lukewarm water about 30° Celsius which clears
off the impurities which adhere to it (dung and earth) leaving it with its animal
grease. For the carbonization weaker acids are employed than usual; the grease
which covers the fibres of the wool protect it against the effects of these acids.
The carbonization for the clearing of the thistles can only be made under a tempera-
ture of about 45 to 50° Celsius, then, in order to entirely remove the acids the wool is
operated in a cold bath of Soda of 4° Baumé; this same bath if used hot would injure
the wool.
Experience has proved that the wool could only be well washed by this new treat-
ment, under the condition that the acids are removed from it.
The wool after having undergone the washing is soft and lends itself well to the
combing and spinning operations, like a wool that had not been subjected to the
carbonization.
Having now particularly described and ascertained the nature of my said Invention
and in what manner the same is to be performed as communicated to me from
abroad I declare that what I claim is.
The process or treatment for clearing off the thistles &c. from wool, conserving to it. its
animal grease at the moment when it undergoes the action of the acids, the wool having
been previously simply made soft in a bath of pure lukewarm water, and its treatment
by the acids cold, as hereinbefore described.
Dated this 19th day of Dacomber 1907
DAVID MASON,
Patent Agent,
Glasgow.