IMPROVEMENTS IN OR CONNECTED WITH OVERFLOW OR WASTE PIPES FOR WATER CISTERNS
Year: 1871

page_text: PROVISIONAL SPECIFICATION left by William Henry Westo and
Miguel Pinder at the Office of the Commissioners of Patents,
with their Petition, on the 15th September 1871.
We, WILLIAM HENRY WESTO and Miguel PinDER, both of Walworth,
in the County of Surrey, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN OR CONNECTED WITH OVERFLOW OR WASTE
PIPES FOR WATER CISTERNS," to be as follows:-
The object of this Invention is to prevent injurious or obnoxious gases
from the drain or the soil pipe or other places in connection therewith
from rising up through the water in house water cisterns, all as hereafter
described.
For this purpose the waste or overflow pipe in its most perfect form is
constructed with an internal water trap, which is kept constantly but
slowly supplied with fresh water from the cistern. The overflow pipe
is in that case of a larger diameter than ordinarily required, in order to
make room for the trap arranged within the same, and consisting of
an inverted cup or bell scolloped out or otherwise open-worked,
where it rests on the bottom of the outer overflow pipe. Inside of

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that bell, and reaching to within a short distance of the top of it, the
pipe connecting on to the waste union passes down through the
bottom of the outer overflow pipe.
A constant but slow flow of water is insured to the trap by means of
an apparatus which we call the regulator, and which is connected to or
placed on the side of the overflow pipe. This regulator may however
also be fitted to ordinary overflow pipes having a trap. It is by
preference made in the form of a cap with milled edges or formed as an
ordinary nut, and having one or more perforations in its bottom. The
inside of the cap contains sponge, wool, felt, or other porous material.
The cap is screwed on to a pipe with its end plugged up, but having one
or more perforations through the same. The harder the cap is screwed
on the more will the porous material therein be compressed, and the less
water would be able to pass through. The pipe is screwed or soldered
on to the side of the overflow.pipe. The water from the cistern passes
through the perforations in the cap, through the porous material in the
same, and then through the perforations in the small pipe into the inside
of the outer overflow pipe and into the trap formed therein; or the
inner perforations may be in the side of the outer overflow pipe itself.
.
•
The regulator may be considerably altered in shape without departing
from the nature of this Invention, which chiefly consists in means for
allowing the water from the cistern to pass through porous material in
order to constantly supply fresh water to the waste pipe trap.
The object of the Invention might also be attained, though in a less
perfect manner, by cutting a hole in the side of an ordinary overflow
pipe or an overflow pipe with a trap of our construction, and covering
the said hole with a piece of cloth or felt pasted on or otherwise
attached. In that case we prefer to put a metallic or other strap round
the pipe at that place, leaving one or more holes for the water to pass
through the cloth.