IMPROVED APPA- RATUS FOR VENTILATING SEWERS AND DRAINS
Year: 1872

page_text: LETTERS PATENT to James Armytage, Borough Surveyor, of Preston,
in the County of Lancaster, for the Invention of "IMPROVED APPA-
RATUS FOR VENTILATING SEWERS AND DRAINS."
Sealed the 15th November 1872, and dated the 18th May 1872.
PROVISIONAL SPECIFICATION left by the said James Armytage at the
Office of the Commissioners of Patents, with his Petition, on the
18th May 1872.
I, JAMES ARMYTAGE, Borough Surveyor, of Preston, in the County
of Lancaster, do hereby declare the nature of the said Invention for
"IMPROVED APPARATUS FOR VENTILATING SEWERS AND DRAINS," to be as
follows:-
This Invention has for its object the construction and application of
apparatus for securing the ventilation of sewers and drains (and so
prevent or reduce the generation of noxious gases to a minimum) of a
simple and inexpensive arrangement.
The apparatus and method of applying the same is as follows :-
I employ a box or case (of iron, earthenware, or other material) similar to

page_text: a street gully. An aperture is made in the side or sides thereof, another
made in the bottom is closed by a lid or cover, and herein-after further
referred to. A portion of the lid or cover of the box forms a grating
similar to an ordinary street grate.
16
"
In applying the apparatus to sewers having "man-holes" communi-
cating therewith, the ground is to be excavated at one side of the
'man-hole," and the ventilating box or gulley placed within the exca-
vation; a hole or aperture must be made through the side of the
"man-hole" and opposite the hole or aperture in the ventilating box,
so that direct communication between the two is secured. In front
of the aperture formed in the side or sides of the ventilating box is a
screen or cage of galvanized wire or other suitable material placed in a
vertical position and containing charcoal or other substance, so that on
the lid or cover of the "man-hole being closed, the air or noxious
gases arising from the sewers or drains will ascend the "man-hole" and
pass through the aperture in the side thereof, and through the charcoal
contained in the screen or cage, being deodorized thereby and escape
through the surface grating of the ventilating box. The aperture in the
bottom of the ventilating box is for the purpose of effecting communi-
cation (by means of pipes) with the sewer, so as on removing the lid
or cover placed on this aperture water collected in the ventilating box
may be discharged, or this communication with the sewer may be
dispensed with and the water or sediment removed as from an ordinary
street gulley. A projecting ledge or shelf formed over the screen or
cage containing the charcoal protects the same from rain or moisture.
man-holes" are not required or
In applying the apparatus where "
desireable an excavation is to be made and the ventilating box deposited
therein, its grate being level with the surface of the street, communication
with the sewer will be effected by means of branch pipes extending
therefrom to the aperture in the side or sides of the ventilating box.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James Armytage in the Great Seal Patent Office
on the 18th November 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, James
ARMYTAGE, Borough Surveyor, of Preston, in the County of Lancaster, 3
send grecting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by. Her
Letters Patent, bearing date the Eighteenth day of May, in the year of
our Lord One thousand eight hundred and seventy-two, in the thirty-
fifth year
of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said James Armytage, Her special licence that
I, the said James Armytage, my executors, administrators, and assigns,
or such others as I, the said James Armytage, my executors, admi-
nistrators, and assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use, exercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVED APPARATUS FOR
VENTILATING SEWERS AND DRAINS," upon the condition (amongst others)
that I, the said James Armytage, my executors or administrators, by
an instrument in writing under my, or their, or one of their hands
and seals, should particularly describe and ascertain the nature of the
said Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said James Armytage, do hereby
declare the nature of my said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement and accompanying Sheet of Drawings
(that is to say):-
This Invention has for its object the construction and application of
apparatus for securing the ventilation of sewers and drains (and so
prevent or reduce the generation of noxious gases to a minimum) of a
simple and inexpensive arrangement.
:-
The apparatus and method of applying the same is as follows:-
I employ a box or case (of iron, earthenware, or other material) similar
to a street gulley. An aperture is made in the side or sides thereof,
another made in the bottom is closed by a lid or cover and herein-after
further referred to. A portion of the lid or cover of the box forms a
grating similar to an ordinary street grate.
In applying the apparatus to sewers having "man-holes" communi-
cating therewith, the ground is to be excavated at one side of the "man-

page_text: hole," and the ventilating box or gulley placed within the excavation;
a hole or aperture must be made through the side of the "man-hole,"
and opposite the hole or aperture in the ventilating box, so that direct
communication between the two is secured. In front of the aperture
formed in the side or sides of the ventilating box is a screen or cage
of galvanized wire or other suitable material placed in a vertical position
and containing charcoal or other substance, so that on the lid or cover
of the "man-hole" being closed, the air or noxious gases arising from
the sewers or drains will ascend the "man-hole" and pass through
the aperture in the side thereof, and through the charcoal contained in
the screen or cage, being deodorized thereby, and escape through the
surface grating of the ventilating box. The aperture in the bottom of
the ventilating box is for the purpose of effecting communication (by
means of pipes) with the sewer, so as on removing the lid or cover
placed on this aperture water collected in the ventilating box may be
discharged, or this communication with the sewer may be dispensed
with and the water or sediment removed as from an ordinary street
gulley. A projecting ledge or shelf formed over the screen or cage
containing the charcoal protects the same from rain or moisture.
In applying the apparatus where "man-holes" are not required or
desirable, an excavation is to be made and the ventilating box deposited
therein, its grate being level with the surface of the street communication
with the sewer will be effected by means of branch pipes extending
therefrom to the aperture in the side or sides of the ventilating box.
Such being the nature and object of this my Invention I will now
proceed to describe the same in detail, and in order that the same may
be fully understood I have hereunto annexed a Sheet of Drawings,
and have marked the same with figures and letters of reference, the
same letters referring to the same part in the various views or Figures;
of which Fig. 1 is a side elevation of my improved apparatus; Fig. 2 is
a vertical section; Fig. 3, an end elevation; Fig. 4, a plan view; and
Fig. 5 is a vertical section shewing the apparatus applied in connection
with a sewer man hole; "and at Fig. 6 the apparatus is shewn con-
nected by pipes direct with the sewer or drain.
C
A is the box or case (of iron, earthenware, or other material,) similar
to a street gulley, having an aperture B therein; another aperture C is
made in the bottom of the said box and closed by the lid or cover D.
The surface lid or cover D¹ of the box forms a grating similar to an

page_text: ordinary street grate. When applying the apparatus for the ventilation
of a sewer by way of the man-hole E an excavation is made and the
box A placed therein; a hole or aperture F must be made through the
side of the man-hole opposite and in communication with the hole or
aperture B. In front of the aperture B is a screen or cage of galvan-
ized wire G (or other suitable material) placed in a vertical position
and supported at B¹ and containing charcoal or other suitable deodo-
rizing substance, so that on the lid or cover H' of the man-hole being
closed, the foul air or noxious gases arising from the sewers or drains
will ascend the man-hole and pass through the aperture F, through
the aperture B, through the charcoal contained in the screen or cage G,
being deodorized thereby and escape by way of the grating D'. A
projecting ledge or shelf D³ formed over the screen or cage G protects
the charcoal contained therein from rain or wet. Where "man-holes'
are not required or desirable, an excavation is to be made and the box A
deposited therein, its grate D¹ being level with the surface of the street,
communication with the sewer H being effected by means of the
branch pipe J extending therefrom to the aperture B. The pipe K is
for discharge of rain water that may lodge within the box A, it only
being necessary to lift the lid D, or the pipe K, lid D, and aperture C
may be dispensed with, and the water or dirt removed by way of the
grating D' after the usual manner of cleaning street gulleys.
"
In witness whereof, I, the said James Armytage, have hereunto
set my hand and scal, this Sixteenth day of November, in the
year of our Lord One thousand eight hundred and seventy-two.
Witness,
BENJN. WALMSLEY,
Preston.
JAS. ARMYTAGE. (L.S.)