IMPROVEMENTS IN TANKS FOR FLUSHING DRAINS AND SEWERS, SUCH TANKS BEING ALSO APPLICABLE FOR VENTILATING THE SAME
Year: 1882

page_text: LETTERS PATENT to James Holroyd, of Leeds, in the County of York, for
an Invention of "IMPROVEMENTS IN TANKS FOR FLUSHING DRAINS AND
SEWERS, SUCH TANKS BEING ALSO APPLICABLE FOR VENTILATING THE
SAME"
•
PROVISIONAL SPECIFICATION left by the said James Holroyd at the Office
of the Commissioners of Patents on the 24th January 1882.
JAMES HOLROYD of Leeds in the County of York. "IMPROVEMENTS IN TANKS
FOR FLUSHING DRAINS AND SEWERS, SUCH TANKS BEING ALSO APPLICABLE FOR
VENTILATING THE SAME."
The flushing tank is constructed of glazed earthenware or stoneware pipes or
tubes of suitable diameter and strength and fixed below the surface of the ground
in a vertical or horizontal direction. When fixed horizontally I provide an outlet
valve as near as convenient to the bottom or lower part of the tank for getting
the water or sewage away when the flushing of the drain or sewer takes place.
When the tank is placed in a vertical direction the outlet valve is also applied as
near the lowest extremity as is convenient.
The object of these tanks is to enable the sewers or drains to be flushed as often
as is desirable, such tanks being filled from the mains or otherwise.
The flushing is effected either by the plug or outlet valve being withdrawn
periodically, or by a flushing syphon or its equivalents.
When the above tank is not being used for flushing, the withdrawal of the plug
or valve when the tank is empty, transforms it at once into a ventilator for the
drains or sewers.
Each tank is provided with a manhole up to the surface of the ground for the
purpose of ready access and ventilation.

page_text: Fig 1 is a Front Elevation. Fig 2 a Transverse section.
Fig 3 a plan looking at the top of flushing and ventilating tank and Fig 4 a
plan of top piece for grating.
The flushing and ventilating tank is constructed of any number of glazed
earthenware or stoneware pipes or tubes of suitable diameter or arca and fixed
below the surface of the ground. In the drawing I have represented the tank a
placed in a vertical direction in which arrangement the plug or outlet valve bis
applied as near the lowest extremity of the tank as convenient. When the
flushing tank a is fixed horizontally I also place the plug or outlet valve bas near
as convenient to the bottom or lower part of the tank, such arrangements of valves
being for the purpose of getting the water or sewage away when the flushing of
the drain or sewer takes place. The object of these tanks a is to enable the drains
to be flushed as often as is desirable, such tanks being filled from the main or
other otherwise.
The flushing is effected either by the plug or outlet valve being withdrawn
periodically or by a flushing syphon or its equivalent. Each tank is provided
with a man-hole cup to the surface of the ground, which is covered in preference
by a grating d. This arrangement is for the purpose of ready access to the interior
of the flushing tank a and for ventilation.
The chaine is employed for raising the plug or valve band by means of the
large ring fit can be looped up on the hook so as to retain the plug or valve b
olen.

page_text: Having now described the nature of my said Invention and described with the
aid of drawings how the same may be carried into practice I would have it under-
stood that I do not limit myself to the precise details or configuration of the parts
I have described and shown as the same may be varied or modified without
departing from the nature of my said Invention, but what I do claim is :-
The arrangement, construction, and application of tanks a for flushing drains or
sewers and for ventilating the same.
In witness whereof, I tho said James Holroyd, have hereunto set my hand
and seal this eleventh day of July in the year of our Lord One thousand
eight hundred and eighty two.
JAMES HOLROYD. (L.S.)