Improved Compound for Marking Boxes, Barrels, Sacks, and for Producing Durable Marks upon Oil Cloth, Cloth Coverings for Coaches, and such like..
Year: 1886

page_text: Improved Compound for Marking Boxes, Barrels, Sacks, and for
Producing Durable Marks upon Oil Cloth, Cloth Coverings
for Coaches, and such like..
I, CAESAR ASTFALCK, merchant and manufacturer of 23 Steinstrasse, Cologne on
the Rhine Germany do hereby declare the nature of my invention and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement :-
My improved compound is formed of a mixture of various sorts of graphite and
soot; the material formed by this mixture is pressed by machinery into bricks or
cakes which are then packed in open wedge-shaped boxes made of tin.
The bricks or cakes are made as follows: first, I mix in a dry state, in the
proportions answering the purpose to be otained, various suitable sorts of graphite
which, after being pounded, are passed through a fine sieve. The hereinbefore
mentioned compound is formed of 80% of natural and very black plumbago and
20% of natural and very viscous plumbago having a larger amount of sulpher;
but I do not limit myself to any kind of plumbago nor to any proportions of the
mixture, and I believe I have a right in doing so, the more so as no one has ever
thought of utilising graphite for the above purpose.
My invention therefore consists in the manufacture of a paint for patterns, made
of graphite with full right to the selection of the kinds of graphite. To the above
mentioned mixture of graphite, treated as already stated, I add about 90% of soot;
according to the kinds of graphite at hand, I increase or decrease the said addition
of soot, but I never intend to use more than 20% and never less than 5% of
soot. The graphite and soot are mixed by hand in a dry state, by means of a rake,
until the color becomes quite uniform. Then according to the state of aggregation
resulting from the temperature, I add from 6 to 12% of water and I again stir
the mass by band with the rake, after which I put it into a mixing apparatus
which completes the mixing of the mass and breaks up the clods. The uniform
mass thus obtained is immediately made into bricks of the shape of the tin boxes
shown in fig. 1, 2 and 3 and in section in fig. 4. The boxes are intended to insure
the regular wear of the color for patterns and also to prevent the formation of holes
which may render the use of the color difficult and also to economise time and stock
from the fact that the latter is already in the desired state, i.e. damp, sufficiently
hard in order not to stain and sufficiently dissolved for immediate use. The tin

page_text: box being watertight, allows of no loss of material. Besides, the advantages of
these blacking cakes, packed in wedge-shaped tin boxes, consist in the cleanliness.
of the bolder, in the perfect shape of the material, in the material being easily
dissolved, non staining and of a durable composition. Finally, the non poisonous
color dries quickly and can be also employed with brushes dipped into water for
marking barrels, boxes and sacks, instead of dipping the brushes into turpentine
or oil for durable marks, such for instance as those on cloth coverings for coaches
and such like.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
°
Bricks or cakes for blacking, composed of a mixture of 80% of natural and
very black plumbago, 20% of natural and very viscous plumbago baving more
sulphur in it, 90% of soot and from 6 to 12% of water or in any other suitable
proportions, the solid substances being first reduced into powder, and mixed
intimately by means of a rake and then water being added, the mixture being
subsequently put into a mixing apparatus for reducing the clods and the non
poisonous color thus obtained being transformed into bricks or cakes packed
into wedge-shaped boxes as shown in the drawing, ready to be forwarded.
Dated this 24th day of September 1886.