IMPROVEMENTS IN STENCH TRAPS
Year: 1885

page_text: I SAMUEL "BRASSINGTON BAMFORD of the firm of Henry Bamford & Sons of
Uttoxeter in the County of Stafford, Agricultural Engineers, do hereby declare
the nature of the invention for IMPROVEMENTS IN STENCH TRAPS, to be as
follows:-
My invention consists of the improvements herinafter described whereby greater
simplicty in construction and efficiency in action are obtained.
In constructing a Stench Trap according to my invention I use an ordinary
sough grate and frame.
Underneath the grate and resting upon the frame is a loose hopper, the lower
part of which has an opening through which water or sewage can pass downwards
into the sewer or other receptacle.
To prevent the escape or upward flow of noxious or sewer gas, I fix on the
bottom of the aforesaid hopper a valve opening downwards with balance weight
and V centres. The balance weight is so adjusted as to press the valve upwards.
on the bottom of the hopper, so as to make a joint, and thus to prevent the escape
of foul air out of the sewer.
When water or sewage pours into the hopper and on to the valve the latter will
open sufficiently to allow the passage of the liquid downwards into the sewer.
The said opening and valve are made of long and narrow form the length being
parallel with the axis of the valve.
The bottom of the hopper is bevelled to a sharp edge on which the valve closes.
By this means any mud on the surface of the valve is cut into by the thin edge of
the hopper and the joint is more effectually sealed. By the use of V centres to
the valve friction is reduced to a minimum. It is also evident that any lodgement.
of dust or mud will not materially affect the working of the valve.
I also sometimes use cone shaped centres for the fulcrum of the valve.
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page_text: I SAMUEL BRASSINGTON BAMFORD of the firm of Henry Bamford & Sons of
Uttoxeter in the County of Stafford, Agricultural Engineers, do hereby declare
the nature of the invention for IMPROVEMENTS IN STENCH TRAPS and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:―
My invention consists of the improvements hereinafter described whereby greater
simplicity in construction and efficiency in action are obtained.
The accompanying drawing shews the method of carrying out my invention.
I use an ordinary sough grate and frame A having an inner bottom ledge on
which rests a loose hopper B, the lower part of which has an opening through
which water or sewage can pass downwards into the sewer or other receptacle.
To prevent the escape or upward flow of noxious or sewer gas, I fix on the
bottom of the aforesaid hopper B, a valve opening downwards C with balance
weight D and V centres E The balance weight D is so adjusted as to press the
valve C upwards on the bottom of the hopper B so as to make a joint and thus
prevent the escape of foul air out of the sewer.
When water or sewage pours into the hopper B and on to the valve C the latter
will open sufficiently to allow the passage of the liquid downwards into the sewer.
The said opening and valve are made preferably of long by narrow form, the
length being parallel with the axis of the valve C.
The bottom edge of the hopper B is bevilled to a sharp edge on which the
valve C closes, by this means any mud deposited on the surface of the valve C is
cut into by the thin edge of the hopper B and the joint is more effectually sealed.
By the use of V centres E to the valve C friction is reduced to a minimum. It is
also evident that any lodgement of dust or mud will not materially affect the
working of the valve.
I also sometimes use cone shaped centres instead of V centres for the valve C.
Having now particularly described the nature of my said invention and in what
manner the same is to be performed I declare that what I claim is :-
The use of cone or V shaped centres combined with a flap or valve and balance
weight placed underneath a hopper for Stench Traps as described and illustrated
in the drawing hereinto appended.
Dated this 1st day of July 1886.