Improvements in and relating to Sewer Ventilating Lamps or for Lamps Dealing with Explosive Compounds, also applicable for similar purposes.
Year: 1895

page_text: Date of Application, 21st Dec., 1895
Complete Specification Left, 18th Sept., 1896-Accepted, 5th Dec., 1896
PROVISIONAL SPECIFICATION,
Improvements in and relating to Sewer Ventilating Lamps or for
Lamps Dealing with Explosive Compounds, also applicable for
similar purposes.
I, JOSEPH EDMUND WEBB of The Sanitary Depôt Gos Street Birmingham in
the County of Warwick Sanitary Engineer do hereby declare the nature of this
invention to be as follows:-
This invention relates to a new or improved method in connection with lamps
used for ventilating purposes as a means for extracting and destroying sewer gases
and noxious vapours, the main object being to prevent and render impossible any
back firing of explosive matter.
For my purpose 1 construct a metal chamber or container preferably of a circular
form and of suitable proportions, the upper part of which terminates with a conical
wire gauze screen or shield which encloses two or more conical wire gauze shields,
the one within. the other but not touching, a similar number of conical wire gauze
shields are located at or near the lower end of the container and pointing downwards.
and between the extremities of the container are two conical ended gauze shields
pointing each to each.
The ventilating pipe in connection with the sewer pipe is carried up the lamp
standard and at the top thereof at the base of the lamp itself I insert the metal
container or chamber which is provided with a projecting rim or flange which
sustains the same in position, attached to this rim are wire or other lifting pieces
for placing in or withdrawing the apparatus.
The effect of constructing the container with the conical gauze shields is that
additional space is obtained and the sewer gas in its passage is diffused when
coming into contact with same, the volume being split up by the lower and
intermediate conical shields and when it issues through the top shields it will be
drawn to the extreme point of same, which acts as a blower, and the gas is finally
consumed by the flame at that point.
The conically shaped shields render it impossible for the flame to beat back as
may be the case if the gauze be placed flatways over a chamber or container and
thus bring about explosion.
The object in having a series of conical gauze shields or screens is that when
the outer one becomes burnt through the succeeding one acts in its place and so on ;
when they are all worn out the apparatus can be readily withdrawn from the lamp
and a fresh one substituted.
From the exterior gauze shield at the lower end of the metal chamber, are
loosely attached a series of hanging wires which are for the purpose of acting as
conductors or leader's to drain off any accumulated moisture from the gauze.
I have named the use of two or more conical shields top and bottom of the
container or cylindrically shaped chamber, I may however use less than that number
according to requirements.
By the above described arrangements very effectual means are provided for the
purpose of ventilating and destroying sewer gases whereby its power is reduced to

page_text: a minimum by the conical shields diffusing the fumes so that its force cannot be
exerted as in the case of an even surface.
Dated this 19th day of December 1895.
EDWD. J. PAYNE & SON,
104, Colmore Row, Birmingham, Patent Agents for the Applicant.
Improvements in and relating to Sewer Ventilating Lamps or for
Lamps Dealing with Explosive Compounds, also applicable for
similar purposes.
I, JOSEPH EDMUND WEBB of The Sanitary Depôt Guest Street Birmingham
in the County of Warwick, Sanitary 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, reference being had to
the drawings accompanying this specification and to the figures and letters shewn
thereon :-
My invention relates to a new or improved method in connection with the
ordinary street standard lamp which may be used for ventilating purposes as a
means for extracting and destroying sewer gases and noxious vapours the main
object being to prevent and render impossible any back firing of explosive matter
and it consists essentially of an ordinary street standard and an extractor pipe and
ą metal chamber or cylinder containing a series of wire gauze screens of a particular
form all in one and the same casting in which advantage is taken of the ordinary
street gas burner to do the triple work of lighting extracting and destroying.
The gas burning as it does at the top of the standard cannot be swamped by
liquid sewage or extinguished by a sudden down pressure of wind as is the case
with other extractors while the economy of utilizing the illuminating power of the
gas is obvious. For other situations than lamp standards my improvements will
equally apply such as for the ventilating and destroying the gases in mines,
mortuaries, crematoria and other purposes; suitable arrangements being employed
to adapt my invention to suit the individual requirements, the principle being
maintained in each case.
I will proceed to describe my improvements as applied to a street standard.
In the drawings similar letters of reference indicate similar parts.
Figure 1. represents an elevation of the metal chamber.
Figure 2. represents a sectional view of same.
Figure 3. represents a sectional elevation of the standard with the metal chamber
in position.
For my purpose I construct the metal chamber or cylinder A. preferably of a
circular form and of suitable proportions to fit into the upper part of the copper
ventilating pipe B, the upper part of the metal chamber A. terminates with a
conical or torpedo shaped wire gauze screen or shield C which encloses two or
more conical wire gauze screens or shields C¹ C³, the one within the other but
not touching a similar number of conical wire gauze screens or shields are located
at or near the lower end of the cylindrical chamber but preferably are used.
two C³ C (or sometimes one only) pointing downwards, and situated midway
between the extremities of the cylindrical chamber are two conically shaped
gauze screens, or shields C5 C6 pointing each to each, a suitable space intervening
between the said points.
The ventilating pipe B which is in immediate connection with the sewer pipe is
carried up the lamp standard D. and at the top thereof at the base of the lamp E

page_text: I insert the metallic cylindrical chamber A. which is provided with a projecting
rim or flange F. in order to sustain the same in position at the top of the standard,
attached to this rim are wire or other lifting pieces G. for placing in or withdrawing
the apparatus.
The cylindrical chamber has a recess H. to admit of the gas pipe I. passing up
the exterior of same.
The effect of constructing the cylindrical chamber with the conical gauze screens
or shields is that additional space is obtained. and the sewer gas in its upward
passage is diffused when coming into contact with the said conical gauze shields
the volume being split up as it were by the lower and intermediate conical
shields C C C and C and when it finally issues through the top shields C² C'
and C. it will be drawn to the extreme point or apex of the latter which acts as a
blower and the gas is then consumed by the flame of the gas jet or jets J. situated
above the gauze cone C. J' is a bye pass jet with an air supply pipe J2 passing
through casing of lamp to support the combustion of J'.
The conically shaped gauze screens or shields render it impossible for the flame
to beat back as may be the case if the gauze be placed flatways over a chamber
or cylinder and thus bring about explosion.
The object in having a series of conical gauze screens or shields is in order that
when the outer one becomes burnt through the succeeding one acts in its place and
in like manner the third. When they all become worn out the apparatus can be
readily withdrawn from the lamp standard and a fresh one substituted.
From the exterior gauze screen or shield C at the lower end of the metallic
cylindrical chamber are loosely attached a series of hanging wires K. which are
for the purpose of acting as conductors or leaders to drain off any accumulated
moisture from the gauze, these wire leaders are contained within the metallic
chamber and do not hang lower than the bottom edge thereof. I have specified
the use of two or more conical shields top and bottom of the cylindrically shaped
chamber I may however use less than that number in all cases according to
requirements.
By the above described arrangements very effectual means are provided for the
purpose of ventilating and destroying sewer gases whereby the power of same is
reduced to a minimum by the diffusion of the fumes, caused by the conical shields
so that the force cannot be exerted as in the case of an even surface or surfaces
which will be clearly understood. Moreover there is no smell whatever (beyond
that of ordinary burnt gas) perceptible on the top of the destructor.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I would have it understood
that I do not necessarily confine myself to the precise details or methods of
construction as herein set forth but I declare that what I claim is-
Firstly. In sewer gas extractors and destructors the construction and arrangement
of a cylindrical or other metallic chamber said chamber being provided with a
series preferably three (or more or less) of conically shaped wire gauze screens or
shields and having two preferably (or more or less) similar wire gauze screens or
shields pointing downwards at or near the bottom of the said cylindrical metallic
chamber the outer downwardly pointing gauze shield having a series of loosely
attached hanging wires all for the purpose and operating in manner substantially
as herein set forth described and illustrated.
Secondly. In sewer gas extractors and destructors the combination with the
sewer and gas connections of main gas jets and the arrangement of intermediate
conical wire gauze shields disposed within the body of the cylindrical chamber the
upper one pointing downwards and the lower one upwards each to each in
combination with the conical gauze shields located at the upper and lower
extremities of the said cylindrical chamber all for the purpose and operating as
a diffusing medium for the sewer gases substantially as herein set forth described
and illustrated.

page_text: Thirdly. In combination with a street lamp an extractor or destructor consisting
of a cylindrically shaped or other metallic chamber having a series of conically
shaped wire gauze shields said cylindrical chamber being located at the upper part
within the copper ventilating pipe contained within the lamp standard in connection
with the sewer pipe and gas connections of main gas jets and so arranged that the
gas burner does the triple work of lighting extracting and destructing whereby the
power of the gas is utilized substantially as herein set forth described and
illustrated.
Fourthly. The improvements in and relating to sewer ventilating lamps or for
lamps dealing with explosive compounds or for extractors, destructors and
ventilators dealing with the gases in mines, mortuaries crematoria and for other
purposes as set forth and described.
EDWD. J. PAYNE & SONS,
Warwick Chambers, 104, Colmore Row, Birmingham,
Patent Agents for the Applicant.