IMPROVEMENTS IN VENTILATOR'S AND CHIMNEY COWL's
Year: 1884

page_text: I, JOHN MARSON LAMB, of 119 Finchley Road South Hampstead in the County
of Middlesex Engineer do hereby declare the nature of my said invention for
IMPROVEMENTS IN VENTILATOR'S AND CHIMNEY COWL's to be as follows:-
This Invention consists in the construction and arrangement of a taper or cone
shaped piece with an open top, surmounted with a hood or cover, and surrounded
with a large inverted cone, fixed so that there is a considerable aperature between
the small end of this cone and the faceing part of the reverse cone, which is fixed
with the large end over the orifice of the shaft, or body. This inverted cone is
surrounded at its lower extremity, by a wide metal cylinder, which extends below
the bottom end of the inner cone, and leaving exposed the greater portion of the
inverted cone and this cylinder is again surrounded with a still larger cylinder of
the same depth, only the bottom edge extends below the inner cylinder, the whole
of these mountings of cones and cylinders are connected with four metal blades
which divide the inverted cones and cylinders into four seperate parts and extending
down through the outer cylinder to form the attachment to the shaft or body.
It will be seen from the construction of these Ventilators and Cowls, that from the
hood to the outer circle, they are divided into four seperate parts, and that these
divideing blades intercept the passage of the wind and convey it downwards through
the several chambers over the inner cone piece, that is fixed over the orifice of the
body, and thereby exhaust the air or smoke from the body by a deflecting induced
current, when more power is required, additional inverted cones mounted one above
the other can be added, and the inner cylinder can be dispensed with and a sealed
connection made betwixt the outer cylinder and the first inverted cone. They can
also be made of other shapes besides round, to suit Architectural purposes. When
making these for Chimney Cowls, I prefer to leave out the inverted cone, and only
use the two cylinders, and the inner cone and hood as herin before described,
When applying these Ventilators for ships down cast or air supply I fix cuped
shaped pieces with a centeral hole between the shaft and the outer cylinder and
between the divideing plates, with a floating ball, which rises from the hole on the
entery of water and closes after the discharge of the same, thereby preventing the
escape of air outwards, or, I, can leave out the inner cone and hood, and fix to
the inner part of the divideing plates, a funnel shape piece with one or more outlets
and only one floating ball which rises with the entery of water and leaves all the
outlets free for discharge, The bottom part of the outer cylinder, I connect with
the shaft by a taper connecting piece which conducts the air down into the shaft.

page_text: I, JOHN MARSON LAMB of 119 Finchley Road South Hampstead in the County
of Middlesex Engineer do hereby declare the nature of my said invention for
IMPROVEMENTS IN VENTILATORS AND CHIMNEY COWLS and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement:-
This Invention consists in the construction and arrangement of a taper or cone
shaped piece with an open top, surmounted with a hood or cover, and surrounded
with a large inverted cone or conical piece fixed so that there is a considerable
aperture between the small end of this cone and the facing part of the reverse cone
which is fixed with the large end over the orifice of the shaft or body This inverted
cone is surrounded at its lower extremity by a wide metal cylinder which extends
below the bottom end of the inner cone and leaving exposed the greater portion of
the inverted cone, and this cylinder is again surrounded with a still larger cylinder
of the same depth only the bottom edge extends below the inner cylinder, the whole
of these mountings of cones or conical pieces and cylinders are connected with four
metal blades which divide the inverted cones and cylinders into four seperate parts
and extending down through the outer cylinder to form the attachment to the shaft
or body. It will be seen from the construction of these ventilators and cowls that
from the hood to the outer circle they are divided into four seperate parts and that
these dividing blades intercept the passage of the wind and convey it downwards
through the several chambers over the inner cone piece that is fixed over the orifice
of the body and thereby exhaust the air or smoke from the body by a deflecting
induced current, when more power is required additional inverted cones mounted
one above the other can be added, and the inner cylinder can be dispensed with
and a sealed connection made betwixt the outer cylinder and the first inverted
cone. They can also be made of other shapes besides round to suit architectural
purposes.
When making these for chimney cowls I prefer to leave out the inverted cone
and only use the two cylinders and the inner cone and hood as herein-before
described. When applying these Ventilators for Ships' down cast, or air supply,
I fix cuped shaped pieces with a central hole between the shaft and the outer
cylinder and between the dividing plates with a floating Ball which rises from the
hole on the entry of water, and closes after the discharge of the same thereby
preventing the escape of air outwards. Or I can leave out the inner cone and hood
and fix to the inner part of the dividing plates a funnel shape piece with one or
more outlets and only one floating ball which rises with the entry of water and
leaves all the outlets free for discharge. The bottom part of the outer cylinder
I connect with the shaft by a taper connecting piece which conducts the air down
into the shaft. The acompaning drawing will serve to more fully explain the nature
of my said invention.
Fig 1 and Fig 2 are Elevations of Ventilators, and Fig 3 a sectional view of
Fig 2. The inverted conical pieces A. A surround the conical pieces B. B. B. which
are fixed over the body or shaft C. The deflecting flange G is connected to the
inverted conical piece A which in Fig 1 joins the outer cylinder E while in Fig 2
it is fixed within the outer cylinder E by this means an additional nir passage is
created which produces a stronger up current through the body C. F. are the
dividing blades which form the means of attachment to the body and all the other

page_text: pieces and divide the ventilator into Four or more Sections on its outer portion for
the conveyance of the wind downwards.
Fig 4 is an elevation of Ship's upcast ventilator. ⚫
Fig 5 is a sectional view of the same.
C. is the shaft or body surrounded near the top by a projecting flange L and also
a projecting flange fixed inside at the bottom of cylinder E. These flanges form a
break against any water that strike against the Shaft C. The conical hoods B. can
also be made of glass instead of metal when light is required through the
ventilator they can be made either in one piece or in several parts fitted in metal
frames.
Fig 6 is an elevation of ships down cast ventilator.
Fig 7 is a sectional view of a down cast ventilator with four or more floating
balls fitting in cup shaped pieces H with holes at the bottom for the discharge of
the water.
Fig 6 shows the water discharge on the outside of the cylinder E by means of
swing flaps K working in box frames when the water enters it forces open the
flap's K. and they close after the discharge which prevents the escape of the air
outwards.
Fig 8 is a sectional view of down cast with only one floating ball in a funnel
piece J with a wire cage over it to regulate rise of floating ball.
Fig 9 is an elevation of chimney cowl showing the position of the inner and outer
cylinders D and E.
Fig 10 is a sectional view of the same C. the body. B. the conical pieces held in
position by the dividing plates F D the inner cylinder E the outer cylinder.
Fig 11 is an elevation of a double body and head cowl as shewn in the single
form Fig 9 this cowl has the bottom portion constructed without the conical
piece B. in the place of which the second body C. is fixed to carry the heads.
Fig 12 is an elevation of cowl has in Fig 9 with the addition of an inverted
conical piece A surrounding the conical piece B. for receiving a greater body of
wind for the deflection over the openings.
In the construction of these ventilators and chimney cowls. The dividing blades
can be made either in one piece or several pieces riveted together to seperate the
outer portion into sections and the cylinder and inverted cones can either be made
complete to pass through the openings as shewn in section drawings or I can make
them in pieces riveted or otherwise fixed to the blades to form the complete
ventilator or chimney cowl.
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 as my invention secured to me by the herein-before in part recited Letters
Patent is
First the arrangement of one or more inverted conical or funnel shaped pieces
fixed so as to surround one or more conical piece and hood so that there is a
considerable space between the small end of the inverted conical piece and the large
end of the conical piece and hood which are fixed vertically over the orifice of the
shaft for the purpose as herein-before described.
Second the arrangement of one or more straight cylinders surrounding the inverted
conical piece as herein-before described.
Third the arrangement of one outside cylinder connected to the inverted conical
piece as herein-before described in reference to the annexed drawing Fig 1.
Fourth the dividing blades which form the ventilators and chimney cowls into
four or more outer sections for collecting and conveying the wind downwards
through the inverted conical or funnel pieces over the hood and body. And also
for forming the plates of attachment for the various pieces as herein-before
described.

page_text: Fifth the combination of conical pieces and inverted conical pieces cylinders and
dividing blades for the construction of ships and other ventilators and chimney
cowls as herein-before described.