Cardboard, and similar Materials.
Year: 1885

page_text: Cardboard, and similar Materials.
I PHILIP MIDDLETON JUSTICE of 55 and 56 Chancery Lane in the County of
Middlesex Fellow of the Institute of Patent Agents do hereby declare the nature
of said, invention for IMPROVED MEANS FOR WATERPROOFING AND PRESERVING
LEATHER, CARDBOARD, AND SIMILAR MATERIALS a communication to me from
abroad by Auguste Sandron of Menin in the Kingdom of Belgium, Civil Engineer,
to be as follows:-
"
The improved means of waterproofing and preserving materials hereinaftor
described is especially applicable to leather or to substances, which like cardboard
are dressed with animal size.
The material to be treated is steeped in a bath, the composition of which will
vary according to the nature and requirements of the case, the main ingredient or
base of the composition however is an essence of the white bark of the birch, which
possesses the valuable properties of non stickiness and of imparting elasticity to the
material.
In treating leather for instance, a good proportion has been found to be 50 to
60 parts by weight of this essence and 40 to 50 parts of oil of tallow or neats foot
oil. This is thoroughly mixed and applied in a cold state to the leather.
In the case of cardboard, a greater quantity of the essence may be employed say
70 parts, together with say 5 parts of cerosine taken from the sugar cane or palm
tree, and 25 parts of oil of tallow or neats foot oil. This is then heated to about
100° Centigrade, and the cardboard is steeped in it. After this steeping, the super-
fluous moisture is squeezed from the boards in a press, or they may be passed
between rollers. With some cardboards simple steeping would occupy too much
time, if the boards were very hard and compact, and in such a case it is preferable
to place them in a closed vessel and force the composition into them by an
hydraulic or other press. The cardboards most suitable for treatment are those
containing very little or no loading and such as are dressed with animal size and
preferably those of the kind into the manufacture of which the refuse of chamois
leather and wooden pulp'enters.
Dand thin aluth da T100r

page_text: Cardboard, and similar Materials.
I PHILIP MIDDLETON JUSTICE of 55 and 56 Chancery Lane in the County of
Middlesex, Fellow of the Institute of Patent Agents do hereby declare the nature
of this invention (a communication to me from abroad by Auguste Sandron of
Menin in the Kingdom of Belgium, Civil Engineer) and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement :-
The improved means of waterproofing and preserving materials hereinafter
described is especially applicable to leather or to substances, which like cardboard
are dressed with animal size.
The material to be treated is steeped in a bath, the composition of which will 1
vary according to the nature and requirements of the case, the main ingredient or
base of the composition however is an essence of the white bark of the birch, which
possesses the valuable properties of non stickiness and of imparting elasticity to the
material at all temperatures.
In treating leather for instance, a good proportion has been found to be 50 to 1
60 parts by weight of this essence and 40 to 50 parts of oil of tallow or neats foot
oil. This is thoroughly mixed and applied in a cold state to the leather.
In the case of cardboard, a greater quantity of the essence may be employed say
70 parts, together with say 5 parts of cerosine taken from the sugar cane or palm
tree, and 25 parts of oil of tallow or neats foot oil. This is then heated to about 2
100° Centigrade, and the cardboard is steeped in it. After this steeping, the super-
fluous moisture is squeezed from the boards in a press, or they may be. passed
between rollers. With some cardboards simple steeping would occupy too much
time, if the boards were very hard and compact, and in such a case it is preferable
to place them in a closed vessel and force the composition into them by an 2
hydraulic or other press. The cardboards most suitable for treatment are those
containing very little or no loading, and such as are dressed with animal size, and
preferably those of the kind into the manufacture of which the refuse of chamois
leather and wooden pulp enters.
Having now particularly described and ascertained the nature of the said 3
invention and in what manner the same is to be performed as communicated to
me by my foreign correspondent I declare that what I claim is
1. The improved means of waterproofing leather, cardboard dressed with animal
size and the like derived from the animal kingdom which consists in saturating or

page_text: coating them with a solution or composition having the essence of white bark of
the birch as its base substantially as set forth.
2. The improved composition for waterproofing leather, cardboards and the
like, which consists of an essence of white bark of the birch, and oil of tallow
or neats foot oil with or without a small proportion of cerosine substantially as
described.
3. As articles of manufacture the product produced by the application of the
above process particularly leather and cardboard shaped or otherwise.