Year: 1886

page_text: Date of Application, 6th Sept., 1886.
Complete Left, 4th June, 1887.
Complete Accepted, 5th July, 1887.
I, CHARLES HIRD, of West View Primrose Hill, Huddersfield, Yorkshire, Engineer,
do hereby declare the nature of this invention to be as follows:-
My invention relates to filters for filtering river or other dirty impure waters, so
that such waters may be used for manufacturing purposes.
In order to carry out my invention, I employ a tank, constructed of wood or other
suitable material, into which I place a number of metal trays or grates. These trays
or grates are arranged one above the other, and are placed at an angle to the bottom
of the tank in cross section, each tray sloping to the same side of the tank. Near
the bottom of the tank I place another tray or grate, which slopes or inclines to one
corner of the tank and between this tray and the next above I place an inlet valve
which admits the water to the tank for filtering. The water as it enters the tank
impinges against the two bottom trays or grates, and as the water rises it also
impinges against the upper trays or grates, the action of which causes a large
percentage of the dirt or sediment contained in the water, to be deposited and to fall
into the bottom of the tank.
After this first filtering process, the water rises through an ordinary filtering body
supported on a metal tray near the top of the tank and after passing there through, is
thoroughly filtered or cleansed from all dirt and impurities, and fit to be used for
any manufacturing purposes.
An outlet valve is placed at the corner of the tank towards which the bottom tray
or grate is inclined, for the purpose of letting out the dirt and sediment deposited in
the bottom of the tank and which is forced or washed out by flushing with a stream
of water.
By using filters constructed according to my invention a large quantity of water
can be filtered in very little time; these filters are also cheap and will work for a
considerable length of time without requiring repairs, the valves being the only parts
liable to get out of order.
1000

page_text: COMPLETE SPECIFICATION.
Improvements in Filters for Filtering Water for Manufacturing
Purposes.
I, CHARLES HIRD of West View, Primrose Hill, Huddersfied, Yorkshire, 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 :-
My invention refers to filters for filtering river or other dirty or impure waters, so
that such waters may be used for manufacturing purposes.
In order to carry out my invention, I employ a tank, constructed of wood or other
suitable material, into which I place a number of metal trays or grates. These trays
or grates are arranged one above the other, and are placed at an angle to the bottom
of the tank in cross section, each tray sloping to the same side of the tank. Near
the bottom of the tank I place another tray or grate which slopes or inclines to one
corner of the tank, and between this tray and the next above I place an inlet valve
which admits the water for filtering, to the tank.
In order that my invention may be more fully understood, I herein make reference
to the accompanying sheet of drawings shewing my improved filter. Fig. 1 is
transverse section of a filter constructed according to my invention and Fig. 2 is
cross section thereof taken through line a. b.
A is the tank or cistern, constructed of wood or other suitable material, in which
are placed a number of filtering beds resting on perforated trays B placed at an angle
to the bottom of the tank, so that each tray slopes or inclines to one side thereof as
shewn in Fig. 2. Resting on the filtering beds are perforated trays C arranged at
the same angle as the trays B. These trays C are preferably corrugated, so that any
dirt or sediment deposited from the water, or falling from the upper filtering bed,
will fall into the channels c and be conducted thereby to the side of the tank. Near
the top of the tank is another filtering bed_supported on the horizontal grate D.
Under the inlet pipe E is a perforated tray F so arranged within the tank that all
parts of the said tray lean or incline to one corner of the tank.
The water to be filtered enters the tank at the pipe E and falls upon the perforated
tray F, the first deposit of dirt or sediment from the water falling through the
perforations in such tray and into the bottom of the tank. As the water rises it has
to force its way up through the perforations in the trays B, C, and also through the
filtering beds between such trays, whereby a very large percentage of the dirt or
sediment is dislodged from the water to the bed, the dirt or sediment from the first
bed falling into the bottom of the tank, and the sediment from the upper beds falling
into the channels c in the corrugated trays C and carried away thereby. Any dirt
or sediment that may remain in the water after it has risen through the inclined trays
and filtering beds will be dislodged and cleared by its passage up through the

page_text: horizontal filtering bed at the top of the tank, after which it may be run off at the
overflow G and used for any manufacturing purposes.
For the purpose of cleaning the tank and removing all dirt and sediment therefrom,
I have provided a number of inlet pipes H and outlet pipes I, provided with valves
and arranged somewhat as shewn in the Drawings, so that as water is admitted
through the pipes H, all the dirt and sediment that may rest in the channels C,
filtering beds, or at the sides or in the bottom of the tank, will be forced through the
various outlet pipes I to the drain pipe or other suitable conduit.
in the
By constructing filters as above set forth, a large quantity of water can be filtered
in a very little time, and by arranging the trays B, C, and F as shewn in the
Drawings and conducting the water upwards through the tank, the liability of any
dirt or sediment passing out with the filtered water is reduced to a minimum. These
filters are cheap and will work for a considerable length of time without requiring
repairs, the valves being the only parts liable to get out of order.
Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed, I declare that what I claim is:
Firstly. The perforated trays B and C placed at an angle to the bottom of the
filter so that each tray slopes or inclines to one side of the said filter substantially as
shewn and described.
F
Secondly. The combination with the inclined trays B and C of the perforated tray_
so arranged within the filter that all parts thereof lean or incline to one corner of the
said filter.
Thirdly. In combination with the inclined trays B, C, and F, of the method of
cleaning the tank and removing all dirt and sediment therefrom substantially as
described.
Fourthly. The combination of inclined filtering beds with an upper horizontal
filtering substantially as set forth and shewn in the Drawings.
TASKER & CROSSLEY,
Halifax, Agents.