Improvements in Ventilating Cowls.
Year: 1898

page_text: Improvements in Ventilating Cowls.
We, WILLIAM THOMAS SUGG, of Vincent Works, Regency Street, Westminster,
Engineer, and JOHN WILLIAM LOFTS, of 2, Octavia Street, Battersea, in the
County of Surrey, Foreman, do hereby declare the nature of this invention to
be as follows:-
!
The object of this invention is to provide a ventilating cowl for railway car-
riages, and for other places where there is risk of water or dust entering the cowl,
and the invention consists in so arranging the cowl that it will be impossible for
water from rain or sea (except when absolutely submerged), or for dust to enter
the cowl.
:
In carrying out this invention, we make use of means for producing a suction
surface with respect to ventilating cowls, as described in the Specification of
Patent granted to the applicant William Thomas Sugg, dated January 25th
1890, No. 1346, and also in the Specification filed by the applicant William
Thomas Sugg in the matter of his application for a patent dated October 28th
1897, No. 24994, such means being adapted in a special and ingenious manner
for the purposes of this invention.
The ventilating shaft opens into a chamber having a tube or tubes on either
side constituting a passage or passages extending upward to a second chamber,
which is provided on its underside with a suction surface, as above mentioned.
By this arrangement there is a space left between the top of the lower chamber
and the suction surface forming the bottom of the upper chamber, and this space
forms a passage across the cowl for currents of air to pass through. The passing
of the air across the suction surface produces a vacuum in the ventilating shaft,
and draws in the vitiated air from the railway compartment or other apartment.
From the fact that the suction surface is above, it will be obvious that the
entrance of water (except when the cowl is positively submerged), as well as of
dust, will be entirely obviated.
The form of the air passage may be rectangular, circular, or any other con-
venient form, and may be provided with a trumpet mouth or mouths, but when
the passage is circular, the suction surface may consist of a series of rings set
at the required angle, the lower half being covered in by a curved plate.
It may however be remarked, that whatever form the cowl may take, the
essential feature is, to place the suction surface in the upper part of the air
passage.
Dated this 18th day of February 1898.

page_text: Improvements in Venta COD
We, WILLIAM THOMAS SUGG, of Vincent Works, Regency Street, Westminster,
Engineer, and JOIN WILLIAM LOFTS, of 2, Octavia Street, Battersea, in the
County of Surrey, Foreman, 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::
=
The object of this invention is to provide a ventilating cowl for railway car-
riages, and for other places where there is risk of rain-water or sea-water, or dust,
splashing into, or otherwise entering the cowl, and the invention consists in
so arranging the cowl that the above object may be effected.
In carrying out this invention, suction surfaces, such as described in the
Specifications of Patents granted to the applicant William Thomas Sugg, dated
January 25th 1890, No. 1346, and October 28th 1897, No. 24994, are employed,
such surfaces being adapted in a special manner.
In the accompanying drawings, Fig. 1 shows one form of ventilating_cowlin
sectional elevation,-Fig. 2 being a sectional plan on the line x-x, Fig. 1-
Figs. 3 and 4 are similar views of a modification, Fig. 5 being an outside view
of the cowl.
A is the ventilating shaft, and B is the cowl, which is preferably of spherical
shape.
☐
Ún either side of the cowl, openings are formed. These openings are con-
nected with a passage C¹, which has the effect of dividing up the cowl into two
chambers, D and D1, connected together on both sides of the passage by tubular
extensions E of the shaft A, which practically carry the shaft upwards nearly
to the top of the cowl.
1
The suction surface F, in the present case, forms, so to speak, the floor of the
chamber D¹ and the top of the passage C.
The cowl will generally be turned with the passage C in the direction of travel,
so that the currents of air passing rapidly through it, act on the suction sur-
face I, to exhaust the air from the chamber D', and, through the passages E,
chamber D, and ventilating shaft A, from the apartment, or railway carriage or
compartment.
In the modification Figs. 3, 4, and 5, the positions of the parts are somewhat
changed; thus, the ventilating shaft A, instead of being divided, as before, itself
extends upwards to nearly the top of the cowl B, and the chamber D) is at the
top. The passages E extend downwards, instead of upwards, and are combined
together, and with the chamber D¹, to form an annular passage E.
The cowl B is formed with openings C at either side, as before, but across
these openings the surfaces F are placed.
The ventilating shaft A has openings A¹ on opposite sides thereof, practically
providing for the passage C¹ across the cowl B before referred to, which passage
is however, in the modification, set at right angles to the openings C, instead
of in line therewith, as before.
:
The cowl may be set with the bars of the suction surface parallel to the line of
travel, and the action will be the same as in the former case.
It will be seen that by constructing the cowls as above described, the entrance
of water, by splashing or driving, and the entrance of dust, will be absolutely
prevented.
i

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is ;-
1. A ventilating cowl in which the ventilating shaft projects upwards to nearly
the top of the cowl, and the vitiated products escape from the cowl at a point
below the top of the shaft, as and for the purpose set forth.
2. Ventilating cowls constructed, arranged, and operating as herein shewn
and described, and for the purpose set forth.
Dated this 16ith day of November 1898
NEWTON & SON,
Agents for the Applicants.