Improved Means for Aerating and Draining Filter Beds.
Year: 1899

page_text: Date of Application, 12th June, 1899
Complete Specification Left, 12th Mar., 1900-Accepted, 28th Apr., 1900
DE MULTIVATION.
Improved Means for Aerating and Draining Filter Beds.
SAMUEL HENRY ADAMS, Hydraulic Engineer, Cumbrae, Park Avenue, Harro-
gate, do hereby declare the nature of this invention to be as follows:-
My invention relates to the means I adopt to ensure the more thorough aera-
tion of a filter bed, in such beds whether sand, coke breeze, rubble or any filtering
medium, the material will tend to consolidate to the consequent exclusion of air
and the lessening of its powers of filtration. To enable a bed to more effectually
act as a filter I arrange to introduce air into the body of the material-for this
purpose I use in one form of my invention any desired number of spherical
rectangular or otherwise shaped hollow bodies having perforations through their
outer circumference or sides, these may be made of earthenware, fireclay, iron or
any suitable material, or I may use a solid substance of any suitable size and form
freely perforated or formed in such a manner as would be the case were a number
of irregular lumps or pieces attached to each other, to form a rugged exterior
with interstices. My object is to place a sufficient number of these articles or
substances, hollow, porous, or otherwise formed that they shall when interspersed
amongst and covered over by the filtering material form cavities or spaces into
which when a filter bed is full liquid will enter driving out the air and from which
as a filter bed empties liquid will pass out and creating suction within will induce
the entry of air thereto. In this way with my invention the natural filling and
emptying of a filter will set up a regular movement of air which will be dispersed
from my articles as so many centres aerating the material of which the filter is
formed. I may use these articles also as a means if placed upon floor of filter of
draining off and aerating more effectually the filtering material.
Dated this 9th day of June 1899.
SAMUEL HENRY ADAMS.
Improved Means for Aerating and Draining Filter Beds.
SAMUEL HENRY ADAMS, Hydraulic Engineer, Park Avenue, Harrogate, 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 relates to the means I adopt to ensure the more thorough aera-
tion of a filter bed, in such beds whether sand, coke breeze, rubble or any filtering
medium the material will tend to consolidate to the consequent exclusion of air

page_text: and the lessening of its powers of filtration. To enable a bed to more effectually
act as a filter I arrange to introduce air into the body of the material-for this
purpose I use in one form of my invention any desired number of spherical,
rectangular or otherwise shaped hollow bodies-having perforations through their
outer circumference or sides--these may be made of earthenware fireclay, iron or
any suitable material, or I may use a solid substance of any desired suitable size
and form freely perforated or formed in such a manner as would be the case were a
number of irregular lumps or pieces attached to each other to form a rugged ex-
terior with interstices. My object is to place a sufficient number of these articles or
substances, hollow, porous, or otherwise formed that they shall when interspersed
amongst and covered over by the filtering material form cavities or spaces into
which when a filter bed is full liquid will enter driving out the air and from which
as a filter bed empties liquid will pass out and creating suction within will induce
the entry of air thereto." In this way with my invention the natural filling and
emptying of a filter will set up a regular movement of air which will be dispersed
from my articles as so many centres aerating the material of which the filter is
formed. I may use these articles also as a means if placed upon the floor of a filter
of draining off and aerating more effectually the filtering material. Reference to
the drawing will explain my invention where at Fig. I shew the filtering
material retained between the walls A A-in the material are shewn three of the
hollow bodies referred to C, C. are formed somewhat as rectangular drain tiles
closed at each end. The outer walls of these hollow bodies are freely pierced to allow
of the passage in and out of liquid and air. D is a spherical hollow body pierced
in the same way. Any number of these bodies may be placed within a filter and
in operation liquid rising to E will enter the bodies C 1), C, and still rising will
displace the air therefrom. This air will be distributed throughout the filtering
medium. When the liquid in the filter is drawn off that contained within the
hollow bodies will pass out also through the orifices provided and air will enter
instead in this way a regular movement of air inward and outward will take
place. These bodies may be of any desired shape provided they form receptacles
for air and now
Having fully described and ascertained the nature of my invention and in what
manner the same is to be performed I declare that what I claim is-
1st. The use in combination with a filter of any hollow body placed for the
express purpose of containing a volume of air to bring about the more perfect
aeration of a filter.
Hated thin 10th day of March 1000