An Improved Ventilating Device.
Year: 1894

page_text: Date of Application, 14th Feb., 1894-Accepted, 17th Mar., 1894
An Improved Ventilating Device.
We, HENRY BROWN of Sunderland, Chief Officer, S.S. Florence, and GEORGE
ROBERT MITCHELL, Marine Engineer of 551 Manchester Road, Poplar, E. 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:
This invention relates to an improved device for ventilating purposes mainly
applicable to vessels for ventilating holds, cabins, saloons, and the like.
The object of this arrangement is to provide a means whereby wind blowing from
any direction is utilised for ventilating purposes without any alteration or turning
of the ventilator. The device is fitted to the top of a ventilating tube leading to
the part of the vessel to be ventilated, and consists of a cap formed of vertical cross
plates arranged radially dividing the tube into four segments. These plates are
surmounted by a circular plate, preferably slightly concave, and a little larger in
diameter than the plates or tube.
Thus the wind from any quarter will be directed down the tube through one of
the segments. This cap may be fixed to the top of the tube, or may be fitted so as
to be adjustable in height by means of a screw or otherwise reducing or enlarging
the ventilating opening, or if required closing it completely forming a watertight
cover in case of emergency.
In order that the invention may be more clearly understood reference is had to
the accompanying drawings, in which
Figs. 1 & 2 are respectively a vertical section and plan of one arrangement, and
Figs. 3 & 4 are corresponding views of a modification.
A is the ventilating tube, to the top of which, as shown in Figs. 1 and 2 the
plates B arranged at right angles to one another, are fitted by the angle plates >>
and the ring at their lower end.
These plates are fixed to the top plate C & to each other by the small angle
plates c, the plate C thus forming a cover, the whole cap consisting of four equal
chambers extending a short distance into the tube A. The device will thus be
equally open in every direction without requiring to be turned. Referring to
Figs. 3 and 4 the tube A is furnished with an enlarged top A' and a tapering
connecting piece A². The ventilating cap is arranged to slide up and down in the
cylindrical top A' which is made of such a size that the cap fits closely, at the same
time being quite free to move. The plates are fixed to a central pillar D screwed
at its lower part, and passing through suitable guides d and d¹ the lower one being
tapped to fit the screwed part of the pillar. A nut or stop E is fitted on the lower
end of the rod which limits the motion of the rod and prevents the cap being raised
out of the tube. The plates B are strengthened by the bands 6 fitted to the lower
edges.
The device is turned round when to be raised or lowered, screwing it up or
down. The amount of ventilation can thus be regulated accurately to any desired
degree.
The ventilator is preferably constructed of galvanised sheet iron, riveted in the
usual manner.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is.
1. An improved ventilating device consisting of a cover carrying a number of
vertical plates arranged radially, fitted to the upper end of a ventilating tube so
arranged that wind coming from any quarter will be directed through the tube
without necessity for moving the cover, substantially as described and for the
purposes specified.
2. An improved ventilating device consisting of a tube in the upper end of which
is fitted a cover formed of a top plate carrying a number of vertical plates arranged
radially, and carried by a rod, the lower end of which is screwed passing through a
tapped support, allowing the cover to be raised or lowered as desired, substantially
as and for the purposes specified.
3. The improved ventilating device comprising a cover carrying four vertical
radial plates fitted to the upper end of a ventilating tube, substantially as described
and shown in Figs. 1 and 2 and for the purposes specified.
4. The improved ventilating device comprising a cover carrying four vertical
radial plates, carried by a screwed rod passing through a screwed support, fitted
to the end of a ventilating tube, constructed substantially in the manner
described and illustrated in Figs. 3 and 4 of the accompanying drawings, and for
the purposes specified.
Dated this 12th day of February 1894.
GEO. H. RAYNER,
37, Chancery Lane, London, W.C., Agent for the Applicants.