IMPROVE- MENTS IN APPARATUS CONNECTED WITH WATER CLOSETS
Year: 1883

page_text: LETTERS PATENT to Thomas William Helliwell, of Brighouse in the County of
York, Architect and Horticultural Engineer for an Invention of IMPROVE-
MENTS IN APPARATUS CONNECTED WITH WATER CLOSETS "
PROVISIONAL SPECIFICATION left by the said Thomas William Helliwell
at the Office of the Commissioners of Patents on the 31st July 1883.
THOMAS WILLIAM HELLIWELL, of Brighouse in the County of York, Architect
and Horticultural Engineer. "IMPROVEMENTS IN APPARATUS CONNECTED WITH
WATER CLOSETS
"
"
This Invention consists.
Firstly In the employment of apparatus for preventing noxious gases returning
from the fall pipe into the water closet basin, which I effect by the employment of
two hinged traps one being placed at the orifice of the outlet pipe in connection
with the closet basin, the outlet of such pipe being in communication with or
emptying into a box or chamber formed on the top of the maindischarge pipe
connected with the drain or sewer. The orifice or outlet part of this box is also
provided with a hinged trap, both of which traps are hinged so that they will
open to the pressure of water when the basin is flushed but will immediately close
by their own weight and effectually prevent the return of gases from the main
outlet pipe or drain. The box or chamber already refered to, is provided with a
ventilator at a point between the two traps so that if any gases returned through
one trap, they would immediately escape into the atmosphere by means of the
ventilator, whereby the basin is kept absolutely free from smell.
Secondly. This Invention relates to the outlet or fall pipe of water closets, and
the improvement therein consists in making the said pipe in two parts lengthwise,
the joints of which are packed and secured by bolts to prevent the escape of any
matter-By this means the front half of the pipe can be removed as often as
desirable, so that the inside of both halves of the pipe may be thoroughly cleaned.

page_text: the said Thomas William Helliwell in the Patent Office on the 31st January
1884.
THOMAS WILLIAM HELLIWELL of Brighouse, in the County of York Architect
and Horticultural Engineer,
IMPROVEMENTS IN APPARATUS CONNECTED WITH
WATER CLOSETS.
"
This Invention consists
EE
Firstly In the employment of apparatus for preventing noxious gases returning
from the fall pipes into water closet basins, which I effect by the employment of
self-acting mechanism.
Such being the nature and object of the first part of my Invention I will now
proceed by aid of the accompanying Drawings to describe same more fully, wherein
Fig 1 is longitudinal section of certain parts of the apparatus I employ, Fig 2 is
another section; and Fig 3 is sectional plan. A is a pipe the upper end of which
is connected to a water closet basin, whilst its lower end is connected to or in
communication with a box or chamber B cast with or otherwise connected to the
main discharge pipe C which is in communication with the drain or sewer.
•
It will be observed that the orifice of the pipe A entering the chamber B is
provided with a hinged flap or trap D and that the opening from the chamber B
to the main discharge pipe C is also provided with a hinged flap or trap E both of
which traps are so hinged or suspended, that when the water closet basin is
flushed, the pressure thereof will cause the said traps to yield upon their hinges
and open, allowing the matter to escape freely, but as soon as the Bushing has
ceased the traps are heavy enough to close again; suitable packing-being-placed
at the closing parts of the traps so as to make them as far as possible air tight.
It will therefore be seen that when noxious gases pass from a drain or sewer up
the pipe C, that they cannot easily enter into the pipe A to the closet basin; as the
hinged trap E will be closed, but in the actual working of such things it is found
that gases do escape through the sides of hinged traps; I have therefore formed a
chamber B and arranged another trap D; but in addition to these traps I employ
a ventilator F placed at a point or position between the two traps; so that when
gases pass through the sides of the trap E, they enter the chamber, and pass out
through the ventilator F into the atmosphere, making it practically absolutely
impossible for gases to pass the second trap D to the pipe A and forward to the
basin.
Secondly. This Invention relates to the outlet or fall pipe of water closets, and
my improvement therein consists in making the said pipe in two parts lengthwise,
the joints of which are packed and secured by bolts to prevent the escape of any
maiter
This part of my Invention is shown in Fig 4 which is elevation of a fall pipe,
and Fig 5 plan view of same, from which it will be seen that the fall pipe is
formed of two halves G and H, secured together by bolts a. By constructing fall
pipes in this manner the front half H can be removed as often as is desirable
so that the insides of both halves of the pipe can be easily got at, and thoroughly
cleaned.
Having thus described the nature of the said Invention and the manner in which
the same is to be, or may be performed or carried into practise, I would have it
understood that I do not confine myself to the precise details herein shown and
described as they may be modified, but what I claim is
Firstly. The employment of the double valve arrangement in manner and for
purposes substantially as herein shown and described.

page_text: Secondly. In combination with the double valve arrangement of a ventilator
placed at a point between the said valves for purposes substantially as herein
described.
Thirdly. The construction of the fall pipes in two parts, in manner and for
purposes herein described
In Witness whereof I the said Thomas William Helliwell have hereunto set
my hand and seal this twenty ninth day of January, in the year of our Lord, One
thousand eight hundred and eighty four.