Improved Method of Manufacturing Artificial Leather or Leather Boards made from Hard Sole Leather Cuttings or other Leather Scraps and various Fibrous Substances.
Year: 1889

page_text: Date of Application, 9th Apr., 1889
Complete Specification Left, 9th Jan., 1890-Accepted, 15th Mar., 1890
PROVISIONAL SPECIFICATION.
Improved Method of Manufacturing Artificial Leather or Leather
Boards made from Hard Sole Leather Cuttings or other Leather
Scraps and various Fibrous Substances.
I HENRY ROYALL MINNS of Maidenhead in the County of Berkshire Engineer
do hereby declare the nature of this invention to be as follows:-
The first part of this invention consists in the treatment of hard sole leather
cuttings or other leather scraps and utilizing the agglutinant substance and coloring
matter obtained from such leather cuttings or scraps. I first take the leather cuttings or
scraps and boil them by steam or otherwise in an alkali solution to which I add
sulphuric acid or in some cases I may use one of these ingredients only, the strength of
this solution will vary in proportion to the nature and condition of the leather this
boiling is continued until the leather is gelatinized and being of an animal substance
or organic tissue will dissolve in the hot liquor and this liquor I use for sizing and
coloring the fibrous substances employed for making the board.
Such fibrous substances being operated upon in an ordinary beating engine at a
temperature varying from 110° to 180° according to the nature of the fibrous
substances under treatment and when all is reduced to a pulp of the required
consistency it is passed through a suitable machine or frame moulds and made into
sheets or boards.
The second part of this invention consists in laying the sheets upon a sliding
table and passing them under a stationary wood or iron roll or rolls engraved or
covered with any design or vice versa that is to say the sheets may be laid upon a
stationary table and the above named roll or rolls passed over the surface thereof
which will retain when dry the design given by the said roll or rolls.
Boards manufactured as above will be found applicable for various useful
purposes.
BROWNE & Co.,
9 & 10, Southampton Buildings, Holborn, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improved Method of Manufacturing Artificial Leather or Leather
Boards made from Hard Sole Leather Cuttings or other Leather
Scraps and various Fibrous Substances.
I HENRY ROYALL MINNS of Maidenhead in the County of Berkshire Engineer
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:
The first part of this invention consists in the treatment of hard sole leather cuttings
or other leather scraps and utilising the agglutinant substance and coloring matter
obtained from such leather cuttings or scraps.
I first take the leather cuttings or scraps and boil them by steam or otherwise in
an alkali solution caustic soda for example to which I add sulphuric acid or in some
cases I may use one of these ingredients only, the strength of this solution will vary
in proportion to the nature and condition of the leather. I have found in practice
that from five to twenty per cent. of sulphuric acid answers well, this boiling is
continued until the leather is gelatinized and being of an animal substance or organic
tissue will dissolve in the hot liquor and this liquor 1 use for sizing and colouring the
fibrous substances employed for making the board.

page_text: Such fibrous substances (such as leather hemp manilla jute) being operated upon
in an ordinary beating engine at a temperature varying from 110° to 180° according
to the nature of the fibrous substances under treatment and when all is reduced to a
pulp of the required consistency it is passed through a suitable machine or frame
moulds and made into sheets or boards.
The second part of this invention consists in laying the sheets upon a sliding table
and passing them under a stationery wood or iron roll or rolls engraved or covered
with any design or vice versa that is to say the sheets may be laid upon a stationary
table and the above named roll or rolls passed over the surface thereof which will
retain when dry the design given by the said roll or rolls.
-
Boards manufactured as above will be found applicable for various useful
purposes such as for boots shoes bags and embossed work and may be made to any
desired thickness.
"
Having now particularly described and ascertained the nature of my said Inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
I. Utilizing the leather for sizing and colouring the fibrous substances of which the
board is composed substantially as set forth.
II. Manufacturing artificial leather or leather boards substantially as set forth.
Dated this 9th day of January 1890.
BROWNE & CO.,
Agents for Applicant.