An Improved Apparatus for Preventing the Escape of Sewer Gas,. and for Disinfecting the same.
Year: 1895

page_text: Date of Application, 3rd July, 1895
Complete Specification Left, 4th Apr., 1896-Accepted, 9th May, 1896
PROVISIONAL SPECIFICATION.
An Improved Apparatus for Preventing the Escape of Sewer Gas,.
and for Disinfecting the same.
I, WILLIAM HOBSON of 15 Saint Mark's Street, Summer Hill, Ladywood,.
Birmingham, in the County of Warwick, Tool Maker do hereby declare the
nature of this invention to be as follows:-
I provide a pipe, and I fit the said pipe into the brick work of the sewer grating,
and the pipe is let into the ground to come under the foot or side walk, and up the
side of the house or other support, so that the sewer gas may pass through. By the
sewer grating, in the foot or side walk, I place a box say of cast iron, and into
the box the pipe as an opening to allow the disinfecting ingredient to mix with the
sewer gas as it goes through, and up the side of the house or other support, I
place another box, for the same purpose, so that the gas may be thoroughly
disinfected.
Over the pipe that is let into the brick work of the sewer grating, I place an.
oblong square rim, say of cast iron, to be built into the brick work, and to project.
out about two inches all around the inside of the said brick work, on this rim of
cast iron or brick work, I place a pan or dish with a hole in the center, and in this.
hole I pass a pipe with a rim on, so as to stop the pipe from going to far through,.
into the water at the bottom of the sewer grating, and then the sewer gas cannot
come through, but by the pipe let in for that purpose. On the pan or dish I place a
coned shaped seive or riddle, to keep paper or other large refuse from stoping the.
said pipe up.
Dated this Second day of July 1895.
WILLIAM HOBSON.
An Improved Apparatus for Preventing the Escape of Sewer Gas,.
and for Disinfecting the same.
I WILLIAM HOBSON of 5 Gladstone Place Icknield Square Ladywood late of
15 St. Mark's Street Summer Hill Ladywood Birmingham in the County of
Warwick, Tool Maker 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 :--
My invention has for its object an improved apparatus for preventing the escape
of sewer gas and for disinfecting the same and refers more particularly to street
gulleys by which I obviate the necessity for the usual sewer ventilating gratings.
which have been a source of danger by reason of the escape of sewer gas. My
improvement can be applied with very little alteration to the present street gulley
and is particularly cheap and simple in arrangement.
In order that my invention may be clearly understood and more easily carried.
into practise I have appended hereunto a sheet of drawings upon which I bave
fully illustrated the nature of my said improvements together with the mode of and
means for carrying the same into effect.

page_text: Figure 1 is a vertical longitudinal section through a gulley suitable for road
purposes.
Figore 2 a cross section through same shewing the disinfecting arrangement in
elevation.
Figure 3 is a plan with the top grating removed.
In carrying my invention into effect I form my gully chamber A of a somewhat
similar shape and size to those now in use and around the chamber I form or build
in the flange or rim a' which supports the pan or dish B which in turn is so formed
as to support the pipe C which is provided with a flange c' for fitting into the
recess formed in the pan.
The bottom of the pipe C dips into the water thus forming a syphon between the
chambers A and grating E the sewerage outlet being at F. From the chamber A and
under the pan B I provide the pipe H which is carried under the road and turned up
vertically against any erection being connected with a box which contains any suitable
disinfectant an outlet pipe H' being connected with this box and carried up above
the eaves of any building or in the form of a shaft to any desired height where it
finishes with a cowl H2 for the distribution of the disinfected gas. The disinfecting
compartment may be arranged under ground as shewn by dotted lines at J¹ if so
desired the pipe being in such cases connected at J and Ja but I prefer to have it
more exposed so as to be capable of easy access. It will be readily seen that the
pan B and pipe Care both easily removeable for cleansing purposes and obviate
the objectionable syphon now in use.
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
1st. An improved apparatus for preventing the escape of sewer gas and for
disinfecting the same substantially as and for the purpose herein set forth and
shewn upon the accompanying drawings.
2Ld. In sewer gulleys the syphon chamber A. connected with a disinfecting
chamber substantially as and for the purpose herein set forth and shewn.
3rd. In sewer gulleys the pan B and pipe C substantially as and for the purpose
herein set forth and shewn.
Dated this 2nd day of April 1896.
WILLIAM HOBSON.