Improvements in and relating to the Overflow Arms of Precipitating Tanks and the like.
Year: 1894

page_text: Date of Application, 13th Jan., 1894
Complete Specification Left, 13th Oct., 1894-Accepted, 8th Dec., 1894
PROVISIONAL SPECIFICATION..
Improvements in and relating to the Overflow Arms of Precipitating
Tanks and the like.
I, EDWARD WILLIAM IVES of Victoria Chambers, Saint Peter's Churchyard,
Derby in the County of Derby, Civil Engineer, do hereby declare the nature of
this invention to be as follows:-
The object of my invention is to prevent the light flocculent matter held in
suspension in sewage or other foul water from entering the overflow or effluent
channel leading from the precipitating chamber to the filter.
In carrying out my said invention I construct the overflow arms with a top
surface of any suitable section such as an inverted ✓ or dome shape or the like,
the said cover being perforated or having other suitable means of allowing the
precipitated sewage or water to enter the said overflow arms; over the upper
surface of the said arms I place prepared filtering cloth or other material of suitable
nature for the purpose of, firstly, forming an uniform natural overflow, perfectly
level, to ensure the uniform upward flow of sewage or water to the overflow arms;
and secondly, to prevent flocculent matter and scum from entering the effluent
sump or channel and so ensuring a better effluent and prevent the clogging of the
filters.
W. SWINDELL,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to the Overflow Arms of Precipitating
Tanks and the like.
I, EDWARD WILLIAM IVES of Victoria Chambers, Saint Peter's Churchyard,
Derby in the County of Derby, Civil 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 :-
The object of my invention is to prevent the light flocculent matter held in
suspension in sewage or other foul water from entering the overflow arms or effluent
channels leading from the precipitating chamber to the filter, and in describing the
the same, reference will be had to the accompanying drawing which is a vertical
transverse section through an overflow arm:
In carrying out my said invention I construct the overflow arms A with a top
surface of any suitable section such as an inverted V or dome shape B, or the like,
the said top surface or cover being perforated as at C or having other suitable
means of allowing the precipitated sewage or water to enter the said overflow arms;
over the upper surface of the said arms I place prepared filtering cloth D or other
material of suitable porous nature for the purpose of firstly, forming an uniform
natural overflow, perfectly level, to ensure the uniform upward flow of the sewage
or water to the overflow arms; and secondly to prevent flocculent matter and scum
from entering the effluent sump or channel and so ensuring a better effluent and
prevent the clogging of the filters. The lowest overflow level is shewn at E and
as the prepared filtering cloth becomes clogged the water gradually rises until it

page_text: reaches to about the level F when it is necessary to change the filtering cloths, the
latter are held down at the sides by rods G or other suitable means.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-.
In the overflow arms of precipitating tanks and the like the construction of the
Baid arms with the upper surfaces of an inverted V or dome, or other suitable
shape, with perforations or their equivalent therein, and covering the said upper or
top surfaces with prepared porous cloths or other suitable material substantially as
and for the purposes described and illustrated.
Dated this 19th dew of October 1894.
W. SWINDELL,
Agent for the Applicant.