Improvements in Drain Traps and the like.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Drain Traps and the like.
GEORGE RICHARD GREGORY 72 Fentiman Road London SW Builder do hereby
declare the nature of this invention to be as follows:-
VS:
To let in and secure Air passing out of Entrance.
It is composed of an Inner Tube, Loose Ball, and an outer Globe Shaped Casing.
The Inner Tube is cut square at its end Just above its end pieces are cut out
or holes made into same The outer Casing is Globe shaped with hole at its Base
the size of Inner Tube's inside Diameter.
The Top of same has an opening large enough to pass over the outside and
fixed above the holes made or pieces cut out of the Inner Tube.
The Ball is placed inside the outer casing which should rest on the bottom
opening It is intended to be placed Hanging from the Top of the outgo of
Traps used in Sanitary work to protect their seal and other purposes where there
is a Suction of Air.
The Ball is made to float on Water in Testing it for lightness.
It can be made throughout of Metal, Wood, Glass Earthenware or Rubber or
in parts of either substance.
Improvements in Drain Traps and the like.
I, GEORGE RICHARD GREGORY 72 Fentiman Road London. S.W. Builder. 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:-
To let in and secure air passing out of entrance. It is composed of an inner
tube, loose ball, and an outer globe shaped casing.
The inner tube is cut square at its end. Just above its end pieces are cut out,
or holes made into same. The outer casing is globe shaped with hole at its base
the size of inner tube's inside diameter. The top of same has an opening large'
enough to pass over the outside and fixed above the holes made or pieces cut out
of the inner tube.
The ball is placed inside the outer casing which should rest on the bottom open-
ing. It is intended to be placed hanging from the top of the outgo of traps used

page_text: in sanitary work to protect their seal and other purposes where there is a suction
of air. The ball is made to float on water in testing it for lightness.
It can be made throughout of metal, wood, glass, earthenware or rubber or in
parts of either substance."
Referring to the annexed drawings,
Figure 1. is a view of trap for use with closets or other positions in which
such traps are used and fitted with my invention.
The casing a has an aperture 6 and contains the ball c which may be of any
suitable material and which closes this aperture.. f is the inner tube or prolonga-
tion having the holes or apertures . This casing a is connected to the trap
as shewn at or about the position d by any convenient means such as screws or
rivets. In the case of a closet, when the same is flushed the passage
of the fluid down the limbe of the trap causes, a partial vacuum and
. the ball is so adjusted as to allow a certain amount of air to enter. This
entrance of air obviates. the removal of too much water from the trap as the
ordinary action which takes place is apt to withdraw more water than is required
to effectually "trap" it at the point g.. Another advantage, is this: that owing
to this admission of air the noise produced in some closets is eliminated, as, the
suction of air around the point g is prevented, as the necessary amount of air to
prevent this is supplied through the aperture 6.
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:-
1. In traps for closets and suchlike purposes: the employment of an auxiliary
air inlet consisting of a casing carrying a movable valve which is attached in a
position so as to enable the required amount of air to enter the trap.
Dated this 29th day of Sentomber 1807