Year: 1885

page_text: I, HENRY PERCIVAL DAWSON, of Cluntergate, Horbury, near Wakefield, in the
County of York, Architect and Surveyor do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in or relating to the ventilation of street
and other drains, such as sewers, gulleys, manholes, sumps; traps, and other like
component parts of drainage.
Hitherto street drains have been ventilated by means of a manhole or other
similar openings covered by a grating on the surface which permits all the foul
and noxious gases and any stench arising from the drain to pass freely into the
street or thoroughfare, and to be inhaled by any person passing over the opening
or grating.
Now this invention consists essentially in carrying these foul gases and stenches
up the inside of pillars or shafts above the heads of the passengers before per-
mitting them to escape into the atmosphere, and for this purpose I by preference
utilize the pillar or post of the gas lamps that are usually fixed on the footpath or
in the centre of the street. In order to do this I prolong the base of the lanip
pillar or post and form on the end thereof a suitable flange or socket for receiving
one end of a pipe that is connected at its opposite end to the drain. The con-
nections at both ends of this pipe are made perfectly tight so that no gas can pass
therefrom, except up the inside of the lamp pillar, and into the atmosphere through
suitable openings made or provided in the upper portion of the pillar immediately
below the lantern. By this means the foul gases and stenches are enabled to pass.
from the drain or other component part of drainage into the atmosphere con-
siderably above the heads of the passengers without their being annoyed thereby.
When employing this invention I close the ordinary manholes with solid lids
and dispense with the existing ventilating shafts usually termed "lamp holes"
and utilize their socket connections for attaching my connecting pipe that runs or
is laid between the drain and lamp pillar base. I also provide caps or flanges for
covering the openings at present made in the base of the lamp pillar. (where the
gas pipes are connected) so that the foul gases and stenches are compelled to pass
through and up the pipe and lamp pillar before escaping into the atmosphere.
Dated himen
atauhan TOOK

page_text: Improvements in or relating to the Ventilation of Street and
other Drains.
I, HENRY PERCIVAL DAWSON of Twitch Hill Horbury near Wakefield, in the
County of York, Architect & Surveyor do hereby declare the nature of this
invention for IMPROVEMENTS IN OR RELATING TO SEWER VENTILATION and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:—
This invention relates to improvements in or relating to the Ventilation of
Street and other drains, such as Sewers, Gulleys, Manhole Sumps, Traps and other
like component parts of drainage.
Hitherto street drains have been ventilated by means of a Manhole or other
similar openings covered by a grating on the surface which permits all the foul and
noxious gases and any stench arising from the drain to pass freely into the street
or thoroughfare and to be inhaled by any person passing over the opening or
grating.
Now this invention consists essentially in carrying these foul gases and stenches
up the inside of pillars or shafts above the heads of the passengers before per-
mitting them to escape into the atmosphere and for this purpose I by preference
utilize the pillar or post of the gas lamps that are usually fixed on the footpath or
in the centre of the street, in order to do this I prolong the base of the lamp
pillar or post and form on the end thereof a suitable flange or socket for receiving
one end of a pipe that is connected at its opposite end to the drain. The con-
nections at both ends of this pipe are made perfectly tight so that no gas can pass
therefrom, except up the inside of the lamp pillar and into the atmosphere through
suitable openings made or provided in the upper portion of the pillar immediately
below the lantern by this means the foul gases and stenches are enabled to pass
from the drain or other component part of drainage into the atmosphere con-
siderably above the heads of the passengers without their being annoyed thereby.
"
When employing this invention I close the ordinary Manholes with Solid Lids
and dispense with the existing ventilating shafts usually termed "Lamp Holes'
and utilize their socket connections for attaching my connecting pipe that runs or
is laid between the drain and lamp pillar base. I also provide caps or flanges for
covering the openings at present made in the base of the lamp pillar (where the
gas pipes are connected) so that the foul gases and stenches are compelled to pass
through and up the pipe and lamp pillar before escaping into the atmosphere.
In order to explain this invention more fully, I shall now describe the drawings
which are annexed and the figures and letters of reference. (The same letters are
used for corresponding parts in all figures.)
Fig. 1. Represents the Elevation of the lamp post shewing the connections with
the Sewer and Base of the pillar.
A. Indicates the pillar.
B. The Gas pipe.
C. The Cap or Flange.
D. The Connecting pipe between the sewer and the pillar base.
R
MI

page_text: Fig. 4. Section through the Lamp pillar, connecting pipe and Sewer the arrows
indicate the course of the gases and stenches and their outlets.
H. Represents the existing form of Ventilator or "Lamp Hole" which
I abolish.
Fig. 5. Detail of the Outlet F. as shewn in Fig. 1.
Fig. 6. Plan looking down Fig. 5 at Point F.
Fig. 7. Detail of the Base of the Lamp Pillar as shewn in Fig. 1.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what
I claim is
.
The use of the Lamp pillar as means of Sewer Ventilation constructed so as to
admit of the foul gases and stenches from the Sewers entering at the Base and
passing out into the atmosphere above the heads of passengers and below the
Lantern.
Dated this Twenty Eighth day of May 1886