Improvements in Sewer Ventilation Columns or Shafts.
Year: 1890

page_text: Dte of Application, 17th Feb., 1890
Complete Specification Left, 15th Nov., 1890-Accepted, 20th Dec., 1890
PROVISIONAL SPECIFICATION.
Improvements in Sewer Ventilation Columns or Shafts.
I, FREDERICK BIRD of 11, Great Castle Street, Regent Street, London, W.,
Engineer, do hereby declare the nature of this invention to be as follows:-
11
My invention relates to sower ventilating columns or shafts whether combined or
not with a street gas lantern.
The invention relates to means for enabling the connection of the sewer ventilating
pipe with the column or shaft to be cut off when access is required to the column for
any purpose or at other times, and also to means for deodorising or disinfecting the
noxious gases in their passage through the column or shaft.
According to my invention, the lower part of the column is in the form of a
chamber to which the sewer ventilating pipe is connected, the communication being
under the control of a valve by which the connection may be cut off when desired.
Within the chamber, an above the point of connection with the sewer pipe, are
fitted a series of superposed perforated trays containing charcoal or other suitable
disinfecting or deodorising agent, through which the gases must necessarily pass in
their ascent through the column to the outlets at the top thereof.
The chamber is provided with a door by which ready access may be had to the
valve and to the trays for the renewal of the disinfectant when required.
Dated this 17th da
1000
F. BIRD.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Sewer Ventilation Columns or Shafts.
I, FREDERICK BIRD of 11, Great Castle Street, Regent Street, London, W.,
Engineer, 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 relates to sewer ventilating columns or shafts whether combined or
not with a street gas lantern.
The invention relates to means for enabling the connection of the sewer ventilating
pipe with the column or shaft to be cut off when access is required to the column for
any purpose or at other times and also to means for deodorizing or disinfecting the
noxious gases in their passage through the column or shaft.
The invention is illustrated as applied to a street lamp, in the accompanying
drawings, forming part of this Specification wherein
Figure 1 is an elevation of a lamp; and
Figure 2 is a central vertical section of the same, on a larger scale, parts being
broken away.
The same letters of reference denote like parts in both figures.
According to my invention, the lower part A of the column is in the form of a
chamber to which the sewer ventilating pipe B is connected, the communication being
under the control of a valve C fitted to slide in guides c cast on the inside of the
chamber A and provided with a handle c¹ for moving it, the valve sliding over the
orifice to which the pipe B is connected, whereby the connection may be cut off when
desired.
Within the chamber A and above the point of connection with the sewer pipe, are

page_text: fitted a series of superposed wire gauze or perforated sheet metal trays D resting on
flanges d and containing charcoal or other suitable disinfecting or deodorising agent
through which the gases can easily pass in their ascent through the shaft E of the
column to the outlets e at the top thereof.
The chamber A is provided with a door a by which ready access may be had to
the valve and to the trays D for the renewal of the disinfectant when required.
F is the gas supply pipe to the gas lantern by which the shaft E is surmounted.
In some cases the lantern may be dispensed with, the shaft E terminating in an
ornamental head in which the outlet apertures e are situated.
By means of this improved column, sewers may be efficiently ventilated without
causing any nuisance as the gases must necessarily pass through the disinfecting
medium and are therefore thoroughly purified before being allowed to escape.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, 1 declare that what I
claim is―
The herein described sewer-ventilating column or shaft furnished with a valve
situated within the column and adapted to control the connection of the sewer with
the column or shaft and fitted with trays carrying disinfecting material through
which the gases must pass before escaping, substantially as specified.
Dated this 15th day of November 1990.
5536
for waT CHA
4
By A. M. & Wm. Clark,
T. BIRD,
53, Chancery Lane, London, Patent Agents.