and for the Removal of the Resultant Sediment.
Year: 1885

page_text: and for the Removal of the Resultant Sediment.
I, WILLIAM PHILLIPS THOMPSON Fel Inst P.A. of the Agency for Foreign
Patent Solicitors 6, Lord Street, Liverpool in the County of Lancaster and
323, High Holborn in the County of Middlesex, Civil Engineer do hereby declare
the nature of the said invention for "IMPROVEMENTS IN OR RELATING TO APPARATUS
APPLICABLE FOR THE SEPARATION OF SUSPENDED MATTERS FROM WATER OR OTHER
LIQUIDS AND FOR THE REMOVAL OF THE RESULTANT SEDIMENT (a communication
from abroad by Friedrich Carl Glaser of 80, Lindenstrasse Berlin, in the Empire of
Germany, Civil Engineer) to be as follows: -
"
The present application for Letters Patent has for its object an improved
construction of apparatus for the clarification of water with simultaneous removal
of the deposited solid matters.
A shoot delivers the water charged with particles of the levigated solids into a
well in which the heavier particles of the suspended matter sink to the bottom, and
are scooped up by the buckets of an elevator. The finer suspended particles not
deposited in the tank, which are ordinarily drawn off with the water, and allowed
to settle in wide deep tanks, are in the present invention passed over an endless
iron carrying band preferably 3 metres wide by 20 metres or more long, kept in
motion in the direction of the current; the upper surface of the band serves as a
precipitation platform for the finer particles of suspended matter. This band is
supported in the middle and at each end on rollers, and furnished with boxes which
pass close to the bottom of the vessel or tank in which the band revolves and so
carry the sediment deposited in them into the well whence it is raised together with
the coarser particles by the elevator. The band being constructed of dispro-
portionate width, causes a very appreciable retardation in the speed at which the
water flows, while the depth of the stream is also reduced to a few inches by this
Din 71
:

page_text: means the settling of even the finest of the suspended matter is greatly facilitated
and the precipitated solids incur no danger of being stirred up again before they
are delivered into the well. A let-off valve enables the contents of the settling
tank to be run off, whenever requisite for repairs to the apparatus or the like. As
this apparatus when in use aets continuously and uniformly, it has the advantage,
that the stream of water leaving it will always have attained the same degree of
clarification, which is not the case with the settling tanks commonly in use, because
they act best at the first and become less effective in proportion to the amount of
deposited matter they contain. The clarified water is discharged at the end through
a shoot and may be delivered from there to a centrifugal pump for use over again.
Dated this 17th day of June 1885.

page_text: Separation of Suspended Matters from Water or other Liquids,
and for the Removal of the Resultant Sediment.
I, WILLIAM PHILLIPS THOMPSON, Fel. Inst. P.A. of the Agency for Foreign
Patent Solicitors, 6 Lord Street, Liverpool, in the County of Lancaster, and
323 High Holborn, in the County of Middlesex, Civil Engineer do hereby declare
the nature of this invention (a communication from abroad by Friedrich Carl
Glaser of 80 Linden Strasse, Berlin, in the Empire of Germany, 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 present application for Letters Patent has for its object an improved
construction of apparatus for the clarification of water with simultaneous removal
of the deposited solid matters.
Referring to the accompanying drawings, the water flowing from the levigators
down the shoot a (Figures 1 and 2) carrying the suspended particles with it, arrives
at the well 6 wherein the heavier particles at once deposit and are removed by the
buckets of the elevator c.
The finer particles which do not deposit here, and which are usually collected in
wide and deep reservoirs of wood or masonry, through which the effluent is caused
to flow, paas according to this invention over an iron carrying belt or band d, three
or more metres wide and twenty or more metres long, which is rotated in the
direction of the current, and the upper surface of which serves as a collecting
surface for the finer particles. This carrying belt travels over rollers at each end
and in the middle as shown in the drawings, and is moreover provided with
boxes e, e, e, which on the return journey approach closely to the wooden or other
bottom of the reservoir in which the apparatus is placed, and so propel the matters
deposited in the boxes into the well b, whence they are removed together with the
coarser particles by the elevator c. As the band d is of considerable width au
immediate retardation of the current results when the same reaches it; moreover
the depth of liquid is only a few inches, the settling of even the finest particles is
therefore very complete, and the matters once deposited are delivered into the well
without being again stirred up, owing to the shallowness of the current, and the
comparatively short travel of the band.
A valve (Figure 2) in the bottom of the reservoir permits of the contents
being run off should it be required to repair the band or for any other reason.
As the apparatus works perfectly uniformly, it has the further advantage, that
the effluent always issues uniformly clarified, which is not the case with levigating
apparatuses hitherto in use, because these work best at the beginning, and clarify
less in proportion as the level of the deposit in them increases.
The clarified water passes off at the end of the apparatus, through the channel g
(Figure 1) and can be returned from thence by a centrifugal pump and used over
again,
.

page_text: Having now particularly described and ascertained the nature of the said
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:-
Apparatus for water purification and sediment collecting for industrial purposes,
consisting essentially of a wide and long rotating travelling band a provided with
divided boxes forming a large precipitation surface and at the same time by means
of its return portion delivering the sediment to the collecting reservoir, substan-
tially as described and shewn in the accompanying drawings.
WP. THOMPSON & Co.,
Agents for the Applicant.