IMPROVEMENTS IN HIGH PRESSURE FILTERS AND IN THE FILTERING MATERIALS EMPLOYED THEREIN
Year: 1879

page_text: PROVISIONAL SPECIFICATION left by Isidor Furstenhagen and Herman
Wildt at the Office of the Commissioners of Patents on the 12th November
1879. [A communication from abroad by Mr. Rudolph Schomburg, of Planen,
near Dresden, Saxony, in the German Empire.]
ISIDOR FURSTENHAGEN and HERMAN WILDT, Agents, of Bradford, in the County
of York. "IMPROVEMENTS IN HIGH PRESSURE FILTERS AND IN THE FILTERING
MATERIALS EMPLOYED THEREIN." [A communication from abroad by Mr. Rudolph
Schomburg, of Planen, near Dresden, Saxony, in the German Empire.]
This Invention relates, firstly, to an improved construction of filtering apparatus,
which consists of a suitable pedestal provided with upright sides to the upper part
whereof is affixed a supply tube.
Upon such pedestal is placed a suitably shaped cylinder made of any transparent
material, preferably of glass, the base of which cylinder is fastened in any convenient
manner to the top of the pedestal, while its upper end is furnished with a movable
cover or lid provided with an outlet pipe.
These various parts are held together by a vertical rod provided at either end
with a screw thread so as to permit of its being fastened with screws at its upper
and lower extremities.
A suitable perforated plate is fixed to the lower end of such vertical rod, which
plate serves as a support for the filtering material, while a second movable perforated
plate fitted to the rod, such movable plate being placed on the top of the filtering
material and screwed firmly down thereon by means of a suitable screw.
This Invention relates, secondly, to an improved filtering inaterial, which consists
of a combination of mineral wool, commercially known as Schlackenwolle or
Glasseide, and charcoal, which material may also be used in combination with or,
if preferred, replaced by any other materials or compositions employed for filtering
purposes.
The advantages of this Invention consist in,―
1°. The lightness and transportability of the filter, which permits of its being
placed in any convenient locality and by means of a hose directly connected with
any existing pressure tap or water tap.
2°. In its having a transparent cylinder, which thus readily enables any person to
watch the filtering process and note the proper time for cleansing the filtering
material as well as the apparatus itself.

page_text: 3°. The facility and economy with which both the filtering material and the
apparatus itself may be cleansed and renovated.
4°. The improved method of conducting the liquid to be filtered above the
deposited impurities, thus entirely obviating any necessity for its passing through
and disturbing them.
5°. The great facilities afforded for the regulation of the filtering material
according to the existing pressure or the greater or lesser impurity of the liquid to
be filtered, the movable lid readily allowing of a stronger or lighter compression of
the filtering material, or the reduction or increase of its quantity as circumstances
may require.
6°. The facility of adaptation of this improved construction of filter, and also of
the improved filtering material, to the filtration of large bodies of water when
required as in the case of waterworks, factories, and other institutions.