Year: 1887

page_text: Brunswick, in the Empire of Germany.
I, WILLIAM PHILLIPS THOMPSON F.C.S. M.I.M.E. of the Agency for Foreign
Patent Solicitors 6, Lord Street, Liverpool and 6, Bank Street, Manchester both in
the County of Lancaster, and 323 High Holborn in the County of Middlesex, Civil
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 :-
In the patent specification, a communication from Mr. Fritz Kleemann No. 1985
of 1884, the process therein described for filtering and decolorizing sugar liquors has
by further experiments been found in a slightly modified form to be useful for
purifying juices obtained direct from fruits, or from roots, or from malt or other like
vegetable matters, also for purifying maltose juice and other like liquid products
obtained directly or indirectly from starch flour or starchy fruits or vegetable
matters.
For this purpose soft porous coal of the Tertiary formation is employed, known as
brown coal or lignite, or even peat. These materials are broken up into small pieces,
or pulverized, and are placed in a vessel in a layer of more or less depth according
to the coarseness of the material, and the juices to be purified, the thicker juices
requiring rather less depth than the thinner ones. The bottom of this vessel 'is
porous so that it becomes a filter.
Or in place of this, finely comminuted brown coal or lignite, or peat is taken and
stirred up and mixed with the juice to be purified, and where the juice will admit of
it, it is preferred to heat it with or without steam pressure for a short time. By this
means the fine dust will be found to have taken up and incorporated with itself, the
slimy and other impurities.

page_text: The matter left on the filter in the first instance, and the entire mass of material
in the second instance is then filtered preferably in a suction-filter or in a filter-press
with or without further washing or steaming, so as to recover the remainder of the
juice still present in the purifying material.
The juices thus purified can, if desired, be passed through fresh material a second
time, or be filtered through bone black, in which latter case the bone black will last
for a very long period, as by far the largest part of the impurities will have already
been taken up by the brown coal or peat.
The brown coal or peat used in this operation can either be well stirred or washed
with hot water and dried, and may be used a second or third time, or employed
as fuel.
It is a special property of brown coal that it will remove from the juices those
impurities which are especially prejudicial to the action of bone black so that the
application of the brown coal in the first instance permits one to obtain a purity of
juice, which is not practicable to secure by means of bone black alone.
Having now particularly described the nature of the said invention, and in
what manner the same is to be performed, it is hereby declared, that no claim
is made in this specification to the scientific purification of known ordinary
saccharine liquors, as the best mode of doing this is fully covered by the prior patent
before mentioned, but that the claim is confined to the purification of fruit, root, malt,
maltose, and starchy juices, and other vegetable juices, in which it is desired to
retain their peculiar flavour to the greatest extent, while purifying them from
extraneous matter, and that what is claimed is :-
The improved means or process for purifying the juices of fruits, roots, malt and
maltose and other like vegetable matters, which consists in treating or filtering the
said juices with brown coal or peat, substantially as above described."
1007
100
الية
WM. P. THOMPSON & Co.,
Agents for the Applicant.
WM. P. THOMPSON & Co.,
Agents for the Applicant.