Improvements in the Construction of Filters, Mainly Designed for the Filtration of Water for Manufacturing Purposes, but Applicable Generally to the Filtration of Water in Quantities.
Year: 1888

page_text: Date of Application, 14th Jan., 1888
Complete Specification Left, 13th Oct.,
1888
Complete Specification Accepted, 16th Nov., 1888
Improvements in the Construction of Filters, Mainly Designed for
the Filtration of Water for Manufacturing Purposes, but
Applicable Generally to the Filtration of Water in Quantities.
I, WILLIAM APPLEYARD NICHOLL of Sowerby Bridge Mills, Sowerby Bridge in the
County of York, Worsted Spinner do hereby declare the nature of this invention to
be as follows :-
This invention relates to filters to be employed in the filtration of water in large
quantities the object being to provide apparatus of inexpensive construction, and
affording facilities for removal of the filtering medium and cleaning the filter.
According to this my invention I construct the filter in the form of a tank or
cistern, this 1 divide by partition plates into a series of compartments, each one of
which contains filtering medium.
For the latter I may use broken bricks, pebbles, sandstone, sand, charcoal, or any
other well known filtering medium, and preferably I employ finer medium in the
compartments nearest the outlet. The partition plates are perforated, the first one
near the bottom of the cistern, the second plate of the next compartment being
perforated near its upper edge, the third plate being perforated near its bottom end,
so that the water to be filtered being passed into the first compartment can pass to the
second compartment only through the filtering medium, and through the perforations
in the bottom of the first divisional plate, it then rises in the second compartment
through the filtering medium therein thence through the perforations near the top of
its partition plate into the third compartment through the filtering medium therein
contained, and by way of the perforations at the bottom of the plate into the fourth
compartment and so on, as there may be two, three, or any number of such compart-
ments between the entrance and exit ways of the water, thorough circulation being
insured, and it is obvious that the number of compartments, and the fineness of the
filtering medium may be varied according to the extent of filtration or removal of
solid matter necessary and according to the rapidity with which it is necessary to pass
the water through the filter.
Tlated this 12th dow of January 1888
WALTER BRIERLEY,
Town Hall Buildings, Halifax,
Agent for the Applicant.

page_text: Improvements in the Construction of Filters, Mainly Designed for
the Filtration of Water for Manufacturing Purposes, but
Applicable Generally to the Filtration of Water in Quantities.
I, WILLIAM APPLEYARD NICHOLL of Sowerby Bridge Mills, Sowerby Bridge in the
County of York, Worsted Spinner, 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 :-
This invention relates to filters to be employed in the filtration of water in large
quantities, the object being to provide apparatus of inexpensive construction and
affording facilities for removal of the filtering medium and cleaning the filter.
According to this my invention I construct the filter in the form of a tank or cistern
this I divide by partition plates into a series of compartments, each one of which
contains filtering medium.
For the latter I may use broken bricks, pebbles, sandstone, sand, charcoal, or any
other well known filtering medium, and preferably I employ finer medium in the
compartments nearest the outlet. The partition plates are perforated, the first one
near the bottom of the cistern, the second plate of the next compartment being
perforated near its upper edge, the third plate being perforated near its bottom end,
so that the water to be filtered being passed into the first compartment can pass to the
second compartiment only through the filtering medium, and through the perforations
in the bottom of the first divisional plate, it then rises in the second compartment
through the filtering medium therein thence through the perforations near the top of
its partition plate into the third compartment through the filtering medium therein
contained, and by way of the perforations at the bottom of the plate into the fourth
compartment and so on as there may be two three or any number of such compart-
ments between the entrance and exit ways of the water, through circulation being
insured and it is obvious that the number of compartments and the fineness of the
filtering medium may be varied according to the extent of filtration or removal of solid
matter necessary and according to the rapidity with which it is necessary to pass the
water through the filter.
Such being the nature and object of this my invention the following is a complete
description of same reference being had to the accompanying drawing. The
accompanying drawing illustrates by a sectional elevation, a filter constructed
according to my said invention, three sizes of filtering medium being shewn in one
compartment.
According to this my invention I construct the filter in the form of a tank or
cistern 1 this I divide by partition plates 2-2-2 into a series of compartments 3. 4. 5.
in each one of which may be deposited a filtering medium.
For the latter I may use broken bricks pebbles, sandstone, sand charcoal, or any
other well known filtering medium, and preferably I employ finer medium 6 in the
compartments nearest the outlet, or the finer medium 6 is so placed that the water

page_text: passes through it after passing through the coarser medium 8-9. The partition
plates 2 are perforated as at 7 one near the bottom of the cistern, the plate of the
next compartment being perforated near its upper edge, and where a third plate is
employed it is perforated near its bottom end, so that the water to be filtered being
passed into the first compartment can pass to the second compartment only through
the filtering medium therein thence through the perforations near the top of its
partition plate into the third compartment through the filtering medium therein
contained, and by way of the perforations at the bottom of the plate into the fourth
compartment and so on as there may be two three or any number of such compart-
ments between the exit and entrance ways of the water, thorough circulation being
insured and it is obvious that the number of compartments and the fineness of the
filtering medium may be varied according to the extent of filtration or removal of
solid matter necessary and according to the rapidity with which it is necessary to pass
the water through the filter.
The partition plates 2 are provided with handles 10 and can be removed out of the
tank 1 where they are held in position by the brackets and slide pieces 11.
Having now particularly described and ascertained the nature of this my said
Invention and in what manner the same is to be performed I declare that what
I claim is :-
The general arrangement, construction, and combination of parts constituting the
improved filter herein described and illustrated by annexed drawings.
1
1000
WILLIAM APPLEYARD NICHOLL.
By his Agent, Walter Brierley,
Town Hall Buildings, Halifax.