FORMING SEWERS OR TUNNELS AND GULLEYS TO SEWERS
Year: 1856

page_text: was not given
in the time prescrived:
by the Act.)
PROVISIONAL SPECIFICATION left by Thomas Wright Gardener Treeby,
at the Office of the Commissioners of Patents, with his Petition, on the
13th November 1856.
I, THOMAS WRIGHT GARDENER TREEDY, of No. 1, Westbourne Terrace
Villas, Westbourne Terraco North, Paddington, in the County of Middlesex,
do hereby declare the nature of the said Invention for "FORMING SEWERS OR
TUNNELS AND GULLEYS TO SEWERS," to be as follows:-
I commence at the lowest level by sinking a shaft or working, as is usually
done, before I begin to form the sewer or tunnel. As soon as this is done, I
lay down an invert made of cast iron or other material, but if of cast iron, I
have cast on the invert iron rails longitudinally, and if of other material, I
form them on the invert, so as to form a railway to take away the earth. On
the rails I have a centre framed, so that as the earth is taken away the centre
can be moved forward, to keep up the earth and allow the brickwork to be pro-
ceeded with. In the invert I have hollow tubes running longitudinally, formed
so as to allow air to be driven through; I do not confine myself to these tubes
or pipes being fixed or formed out of the invert, but I should have them put
where I may find them most convenient, so that I could blow a current of air
through the sewer; nor do I confine myself to one or more pipes for that
purpose; to make this more clear my plan is,-
As I lay my invert I form a railway to take away the earth. Air to be

page_text: sent through the sewer or tunnel, so as to have a fresh current continually
passing up and driving the foul air back; and where it is intended to lift tho
earth out of the shaft, to have a small engine working a blast blower, such as
are used for blast furnaces. So by these means I can form a sewer or tunnel
any distance without disturbing the street or land above.
I commence at my lowest level, so as the work proceeds forward, the incline,
which is given to cause a proper fall for the sewage, will allow the whole of the
working to be kept dry; the water may be lifted by any of the plans usually
used for the purpose. The incline which is given for the sewage will allow tho
full trucks to run to the place decided to get rid of the earth, which may be
lifted by an engine or any common means. The full trucks will run down the
incline, and bring up the empty ones for reloading, by means of an endless chain
or rope. The trucks to be used are the same as those commonly used, except
the wheels, which are larger on the side towards the centro than the wheels on
the outside, so as to make up for the unevenness of the rails, as one rail is lower
than the other; but in small sewers common trucks may be used, and only
two rails, which may be fixed on brick inverts and a common tubo passed
through, so that the air may be driven to the workings, as before-mentioned.
Should the sewer or tunnel be made all iron or other material, I claim as
my Invention the putting it together in different parts, the joints of such pipes
to run transversely and longitudinally, so as to allow then to be taken through
the sewer or tunnel, which cannot be done according to the present way of
pipes being put together, as the joints run transversoly only.
My plan for taking off surface drainage is this:-The pipes commonly
called gulley pipes are to enter the sewer or tunnel near the crown, instead of
near the invert, by this means I get very nearly a perpendicular fall, whereby
I thoroughly secure the cleansing of the trap or flap. At the bottom of tho
pipe that so enters I fix a flap or valve, binged above the mouth of the pipe at
the back, so as to prevent it corroding. This flap and pipe may be ground to
fit, or it may be trapped, or any other plan such as is in common use for
trapping.
What claim is this:-The pipe is inserted at or near the crown, instead of
near the invert.
To make this my Invention more clear, supposing a flute is a pipo passed
through the top of the sewer or tunnel, and that the key is the flap hinged to
the end of the flute, the part that the finger touches is the lever, and at the
end of this lever there is a weight, so that when there is a quantity of water or
mud the flap will open, and must continually be washed clean.
To state it shortly, then, my Invention is, firstly, in forming a railway in the

page_text: sewer without extra cost to get rid of the earth. The rails are formed on the
invert, and where they come the part may be hollowed out so as to prevent
extra weight of material.
Secondly, in causing a current of air to be driven through, so that the sewer
or tunnel may be carried any distance without disturbing the ground above.
Thirdly, a gulley sluice-trap for carrying off the surface drainage.
Fourthly, forming the new pipes with longitudinal joints, as well as the
common transverse joints that are now used. The object of this is, that the
pipes may be taken through the sewer or tunnel in separate parts, and after-
wards put together, which cannot be done with those used at present.