Improvements in Sanitary Traps for Sinks and the like.
Year: 1896

page_text: Date of Application, fot May, 1908
Complete Specification Left, 5th Sept., 1896-Accepted, 10th Oct., 1898
Complete Specification Left, 5th Sept., 1896-Accepted, 10th Oct., 1898
PROVISIONAL SPECIFICATION.
Improvements in Sanitary Traps for Sinks and the like.
I, HARRY EDWIN HADLEY, of The School of Science Kidderminster, in the
County of Worcester, Head Master of Science School, do hereby declare the
nature of this invention to be as follows:-
This invention consists of improvements in sanitary traps for sinks and the like,
my object being to so construct such appliances as to effectually prevent the
destruction of the water seal by the syphon action set up on the discharge of water
through the down pipe.
In the application of my invention to a sink or water closet having a U-shaped
bend or return connection for the reception of the water forming the seal to arrest
the escape of gases from the drains, I provide in the middle pipe or connection
between the seal and the down pipe a chamber of a spherical or other convenient:
form. Upon flushing the sink or water closet the escaping water in passing
through the discharge or down pipe sets up a syphon action under which the water:
is forced out of the bend. But the provision of the intermediate chamber herein-:
before described prevents the complete discharge of the water, the admission of
air breaking up the continuity of flow of the liquid. At the end of the syphoning.
action, when the discharge pipe is emptied, the water remaining in the intermediate
chamber falls back into the bend or U-shaped connection, and effectually seals
the same.
I make the intermediate chamber of such capacity as to retain sufficient water
during the period of the syphon action to form the seal at the conclusion of such
action and modify its shape and arrangement to adapt it to the particular service.
for which it is required.
To facilitate cleaning operations I sometimes fit a screw or other plug at the.
lowest part of the bend or U-shaped connection.
1906
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
18 Temple Street, Birmingham, Agents for the Applicant.
Improvements in Sanitary Traps for Sinks and the like.
I, HARRY EDWIN HADLEY of The School of Science, Kidderminster in the
County of Worcester, Head Master of Science School, do hereby declare the
nature of my said invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement :-
This invention consists of improvements in sanitary traps or syphon bends for
sinks and the like, my object being to so construct such appliances as to effectually
prevent the destruction of the water seal by the syphon action set up on the:
discharge of water through the down pipe.

page_text: In the application of my invention to a sink or water closet having a U shaped
bend or return connection for the-reception-of-the water forming the seal to arrest
the escape of gases from the drains I provide in the middle pipe or connection
between the seal and the down pipe an enlargement of spherical or other convenient
form. Upon flushing the sink or water closet the escaping water in passing through
the discharge or down pipe sets up a syphonic action under which the water is
forced out of the bend.
But the provision of the intermediate enlargement herein before described prevents
the complete discharge of the water, the admission of air breaking up the continuity
of flow of the liquid. At the end of-the.syphonic action when the discharge pipe
is emptied, the water remaining in the enlargement falls back into the bend or
Ushaped connection and effectually seals the same.
I make the intermediate enlargement of such capacity as to retain sufficient
water during the period of syphon action to form the seal at the conclusion of such
action and modify its shape and arrangement to adapt it to the particular service
for which it is required. To facilitate cleaning operations I sometimes fit a screw,
or other plug at the lowest part of the bend or U shaped connection.
In order that my invention may be clearly understood and more easily carried
into practical effect I have appended hereunto a double-sized sheet of drawings
upon which I have illustrated one example of my invention but it must be
understood that I do not confine myself to the exact. configuration shown as these
may be considerably varied without departing from the essence of the invention.
Figure 1 is an elevation of a: cistern B. with my seal of syphon pipe A attached
to the bottom of the cistern but .it will be understood that a water closet basin,
sink on other article may be substituted. for the cistern B with the same effect.
Figure 2 is a sectional elevation of the same cistern B and seal pipe A as shown
by Figure-1.
To the cistern, water closeb basin, sink or other article the seal or syphon
pipe.A is attached with its return branch A and its discharge branch A' with its
seal water level indicated by a. Now according to my invention I formn in the
pipe A an enlargement a which may be of the shape shown or of .different
configuration, and it may be formed with a flange connection. to the pipe A¹ but is
always: formed vertically or approximately so and is so connected, that the water
can be automatically discharged downwards by gravity into the seal bend a' and of
such a capacity that. there.is. a. volume of water,. retained in this enlargement at
the end of the syphon action sufficient. to fall back. and fill the bend to a height
on either side which is considered to constitute a safe seal. The action is as
follows:-
When the flush takes place from the: cistern B by any usual arrangement of
parts or connections such as-the valve-pull of a water closet or the automatic
action of apparatus in connection with a. cistern, the stream of discharged water
travels through the enlargement a which may be of any desired or convenient
shape, as previously set forth, until the last portion of the stream reaches the
bottom of the enlargement, when the syphon action will no longer continue to pull
the water over the bend, but the-action will be quickly destroyed by the bubbles
of air which will be drawn through the water collected in the enlargement. As soon
as the syphon action ceases, this water previously retained in the enlargement will
gravitate, downwards, into the seal.a' and complete the seal to about the level
shown at.a.
For the purpose of conveniently cleaning, or examining, the seal bend I may
form a branch at either at the bottom or the side. with a cap or cover a to seal
the hole.
Having now particularly described and ascertained the nature of my said,inven
tion and in what manner the same is to be: performed 1 declare that what I
claim is :-
The improved means for preventing the traps, S bends or the like used for

page_text: cisterns sanitary and other purposes from being left empty consisting essentially of
a such like enlargement as a situated above the bend a' and operating automatically
after each discharge of water or flushing operation substantially as herein set forth
and shewn upon the accompanying drawings.
Dated this 4th day of September 1896.
GEORGE BARKER,
77 Colmore Row, Birmingham, Agent.