IMPROVEMENTS IN APPARATUS FOR SEPARATING LIQUIDS FROM SOLID MATTERS SUSPENDED THEREIN
Year: 1883

page_text: LETTERS PATENT to Herbert John Haddan, of Kensington, Middlesex, for an
Invention of IMPROVEMENTS IN APPARATUS FOR SEPARATING LIQUIDS FROM
SOLID MATTERS SUSPENDED THEREIN communicated to him from abroad by
Gaillet and Huet, of Lille, France
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at
the Office of the Commissioners of Patents on the 22nd February 1883.
HERBERT JOHN HADDAN, of Kensington, Middlesex, "IMPROVEMENTS IN
APPARATUS FOR SEPARATING LIQUIDS FROM SOLID MATTERS SUSPENDED THEREIN
a communication to me from abroad by Gaillet and Huet, of Lille, France,
"
This invention has for its object the separation of solid particles from the liquids
in which they are suspended, and is particularly applicable for the clarification of
water used for feeding boilers or for other industrial purposes.
For this purpose I cause the mixture of liquid and solids to flow alternately
upward and downward between inclined plates or partitions, allowing sufficient
space for the solid particles to settle at the bottom of the channels formed by said
plates, from which they can be easily discharged.
The apparatus used for the separation is preferably a vertical vessel containing a
number of parallel partitions, inclined at an angle of about 40 degrees, and leaving
alternately a space at the top and at the bottom for the passage of the liquid, which
enters at the bottom of the vessel and is discharged at the top. The partitions are
also inclined sideways at an angle of about 45 degrees, and so that the deepest
'point of each partition is in the centre from which it rises right and left.
If the impurities contained in water used for industrial purposes are to be
precipitated by chemicals I supply the separating or decanting apparatus and the
vessel in which the chemicals are dissolved, from the same tank, for which the
latter is provided with two outlets and two adjustable valves. By this means
the proportion between the liquid to be purified and the dissolving liquid may be
regulated and kept constant.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Herbert John Haddan in the Great Seal Patent Office on the
22nd August 1883.
HERBERT JOHN HADDAN, of Kensington, Middlesex,
"IMPROVEMENTS IN
APPARATUS FOR SEPARATING. LIQUID FROM SOLID MATTERS SUSPENDED THEREIN,"
a communication to me from abroad by Gaillet and Huet, of Lille, France,
This invention has for its object the separation of solid particles from the liquids
in which they are suspended, and is particularly applicable for the clarification of
water used for feeding boilers and for other industrial purposes.
For this purpose the mixture of liquids and solid matters is caused to flow
alternately upward and downward between inclined plates, allowing sufficient
space for the solid particles to settle at the bottom of the channels formed by Baid
plates.
It consists chiefly of a vertical vessel containing a number of parallel
partitions, a, a, b, b, c, c, d, d, inclined at an angle of about 40 degrees and
alternately rivetted to two opposite sides of the vessel. These partitions are made
of blades inclined sideways at an angle of 45° so that the whole inside of the
apparatus comprises a series of compartments all sides of which are inclined at
45° degrees with the exception of those formed by the vertical sides of the vessel.
If a liquid mixed with solids enters at O at the bottom of the apparatus already
filled with liquid, it will first take an ascending motion, then pass over the edge of
the partition a a so as to get into the upper compartment and alter its course.-
The liquid mixed with solids will run down on the upper side of the partition a a,
then ascend along the upper side of b b, then descend along the partition cc,
along the upper side of the partition-d d, and so on. During these contrary
motions, without violent disturbance, the solid particles contained in the liquid
will be deposited.
rise
The solid particles gliding over the inclined partitions accumulate at the lower
part of the latter, from which they may easily be removed by opening the
apertures o, o, o.
Experiments made with these arrangements have proved entirely successful, the
clarification being a rapid and complete one. In consequence of the inclination of
45° degrees the deposited solids glide promptly to the lowest part of the compart-
ments, thereby escaping the influence of the current of water, that is to say the
particles when deposited cannot be washed off again by the current. The cleaning
of the apparatus easy and nearly instantaneous.
The apparatus above described and illustrated in the accompanying drawing,
Fig, 1 to 6 is applicable to various industrial purposes.
If the impurities contained in the water are to be precipitated by chemicals a
vessel containing the chemicals to be dissolved is placed near the separating or
decanting apparatus, as shown in Figs. 1 and 2.
Water flows from a high level reservoir or from a pump into a tank having two
outlets of variable cross-section, one of which leads to the decanting apparatus
and the other to the apparatus for producing the precipitating solution, so that
the ratio between these two supplies remains constant after the orifices have been
once adjusted.
If there is no water, no dissolving liquid will flow and if there is much water
the supply of dissolving liquid will increase,

page_text: CLAIM
An apparatus for automatically separating the solid particles from the liquids in
which they are suspended and the application of the same apparatus for the
clarification of water purified by chemicals, substantially as described.
5 In Witness whereof, I the said Herbert John Haddan have hereunto set my
hand and seal this 20th day of August. A.D. 1883.