IMPROVEMENTS IN PREPARING CERTAIN VEGETABLE FIBRE KK ORDER TO RENDER THEM SIMILAR TO BRISTLES OR HORSE HAIR
Year: 1880

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 PREPARING CERTAIN VEGETABLE FIBRE
KK
ORDER TO RENDER THEM SIMILAR TO BRISTLES OR HORSE HAIR,"
A communication from Siegmund Metzger, a person trading under the Firm
of S. Metzger & Sohne, at Mannheim, in the Empire of Germany.
PROVISIONAL SPECIFICATION left by the said Frank Wirth at the Office
of the Commissioners of Patents on the 22nd June 1880.
FRANK WIRTH, of the Firm of Wirth and Company, Patent Solicitors, at Frankfort
on the Main, in the Empire of Germany. "IMPROVEMENTS IN PREPARING CERTAIN
VEGETABLE FIBRE IN ORDER TO RENDER THEM SIMILAR TO BRISTLES OR HORSE
HAIR" [A communication from Siegmund Metzger, a person trading under the
Firm of S. Metzger & Sohne, at Mannheim, in the Empire of Germany.]
Mexican or Tampico fibre has long been used as a substitute for bristles and
horse hair. It has however not been possible previous to this Invention to give
such fibre the peculiar gloss and smoothness of horse hair or bristles.
The process according to this Invention is, after the fibre known as Moxican or
Tampico fibre has been stained black, it is put into a bath of sulphuric acid and
then into a soda bath. While the fibre is still wet it is subjected to a strong
rubbing produced by hand, or by an apparatus suitable for the purpose. The fibre
thus receives a deep black and perfect gloss and smoothness which it never loses,
and is rendered in appearance equal to bristles or horse hair.

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 21st December
1880.
FRANK WIRTH, of the Firm of Wirth and Company, Patent Solicitors, at Frankfort
on the Main, in the Empire of Germany. "IMPROVEMENTS IN PREPARING
CERTAIN VEGETABLE FIBRE IN ORDER TO RENDER THEM SIMILAR TO BRISTLES'
OR HORSE HAIR." A communication from Siegmund Metzger, a person trading
under the Firm-S. Metzger and Foh, at Mannheim, in the Empire of Germany.
Mexican or Tampico fibre has long been used as a substitute for bristles and
horse hair. It has however not been possible previous to this Invention to
give such fibre the peculiar gloss and snboothness of horse hair or bristles.
The process according to this Invention is, after the fibro known as Mexican or
Tampico fibre has been stained black, it is put a bath of sulphuric acid and
then into a soda bath. While the fibre is still wet is subjected to a strong
rubbing produced by hand, or by an apparatus suitable for this purpose. The fibre
thus receives a deep black and perfect gloss and smoothness which never loses,
and is rendered in appearance equal to bristles or horse hair.
The beforegoing being the nature, object, and purposes of this Invention, what I
claim as the invention communicated to me by the said Siegmund Metzger, and
secured by Letters Patent as aforesaid is,-
The method of producing a gloss and smoothness on Mexican fibro or Tampico by
a bath of sulphuric acid and a bath of soda, and subjecting the fibre to rubbing,
substantially for the purpose and in the manner described.
In witness whereof, I, the said Frank Wirth, have hereunto set my hand and
seal, this Fourth day of December, in the year of our Lord One thousand
eight hundred and eighty.