Year: 1885

page_text: I, CHARLES M°WHIRTER, of East India Dock Road in the County of Middlesex,
Engineer, do hereby declare the nature of this Invention to be as follows:-
This invention relates to ventilating apparatus used more especially for the
ventilation of ships, in which a draught is caused in a ventilating pipe by means
of one or more jets of steam, the action of which causes an induced current of air
through and from the pipe.
I have found that in such steam ventilating apparatus, especially when used for
the ventilation of ships in which a number of jets of steam from a "jetter" are
directed upward in the ventilating pipe, any steam which condenses as and after
it issues from the jets runs down the pipe and has to be collected and removed
continuously or at intervals.
My present invention has for its object improvements in the apparatus by
which such condensed steam is collected and removed continuously, by which
improvements any interference with the current of escaping air is lessened, aud
the collection of the condensed water is made more certain without the possibility
of any such water running down the sides of the pipe or escaping the action of the
collecting apparatus.
Supposing that my improved apparatus is to be applied to a vertical ventilating
pipe on board a ship, the upper open end of the pipe being fitted with a moveable
horizontal cowl which can be turned away from the wind, and a ring or series of
jets through which steam is admitted being arranged near the upper end of the
pipe, I form the part of the pipe below the jets in the form of two truncated cones
united at their bases, and the smaller end of the upper one being connected to the
pipe below the jets, and that of the lower one being connected to the pipe or pipes
from which air is to be drawn for the purpose of ventilation.
Inside the double conical chamber so formed, I fix a funnel-shaped vessel of less
diameter than the chamber its upper open end being about level with the widest
part of the latter where it is fixed by suitable brackets or stays, and its closed
apex below pointing into the pipe below the chamber. At a short distance above
this apex I make a horizontal false bottom to the funnel, and just above this false
bottom I arrange a pipe by which any water in the funnel is at once conveyed
|away to any suitable place and discharged.

page_text: The lower end of the upper pipe containing the jets enters and descends a short
distance below the upper end of the chamber, so that any condensed steam from
the jets cannot trickle down the sides of the chamber into the main pipe below
but drops directly into the mouth of the funnel which is of somewhat larger
diameter.
At a short distance above the funnel I arrange and fix an inverted cone of less
diameter, from the edge of which the condensed water falling from the jets also
drops into the funnel. This inverted funnel directs into the proper direction air.
when made to pass down the ventilating pipes, instead of up as first described.
Dated this 22nd day of December 18851

page_text: I, CHARLES MCWHIRTER, of East India Dock Road, in the County of Middlesex,
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 and accompanying drawing (that is to say):
This invention relates to ventilating apparatus, used more especially for the
ventilation of ships, in which a draught is caused in a ventilating pipe by means
of one or more jets of steam, the action of which causes an induced current of air
through and from the pipe.
I have found that in such steam ventilating apparatus, especially when used
for the ventilation of ships in which a number of jets of steam from a "jetter" are
directed upward in the ventilating pipe for the purpose of causing the induced
current of air, any steam which condenses as and after it issues from the jets runs
down the pipe and has to be collected and removed continuously or at intervals,
some inconvenience being caused by the attention necessary.
My present invention has for its object improvements in the apparatus, by
which improvements such condensed steam is collected and removed continuously,
any interference with the current of escaping air is lessened, and the collection of
the condensed water is made more certain, without the possibility of any such
water running down the sides of the ventilating pipe or escaping the action of the
collecting apparatus.
The accompanying drawing is in illustration of my invention, figure 1 being a
vertical section through the ventilating apparatus and figure 2 a front view of
the same. The same letters of reference indicate the same parts in both figures.
The improved apparatus is shewn applied to a vertical ventilating pipe a on
board a ship, the upper open end of the pipe being fitted with a moveable horizontal
cowl b which can be turned away from the wind, and a ring or series of jets c
through which steam is admitted from a supply pipe as shewn being arranged near
the upper end of the pipe. I form the part of the pipe a below the jets in the
form of two truncated cones a¹ a² united at their bases, and the smaller end of the
upper one a¹ being connected to the pipe a below the jets c and that of the lower
one being connected to the pipe or pipes d, d, from which air is to be drawn for
the purpose of ventilation.
Inside the double conical chamber so formed, I fix a funnel-shaped vessel e of
less diameter than the chamber, its upper open end being about level with the
widest part of the latter, in which position it is fixed by suitable brackets or stays,
and its closed apex below pointing into the pipe a below the chamber. At a short
distance above this apex I make a horizontal false bottom f to the funnel, and just
above this false bottom I arrange a pipe g by which any water in the funnel is at
once conveyed away to any suitable place and discharged.
The lower end of the upper pipe a containing the jets enters and descends a short
distance below the upper end of the chamber at h, so that any condensed steam
from the jets cannot trickle down the sides of the chamber into the main pipe
below but drops directly into the mouth of the funnel e which is of somewhat
larger diameter.

page_text: At a short distance above the funnel I arrange and fix an inverted cone i of less
diameter, from the edge of which any condensed water falling from the jets also
drops into the funnel e. This inverted cone diverts into the proper direction air
when made to pass down the ventilating pipe a, instead of up as first described.
I do not confine myself to the precise shape and proportions of the several parts
of the apparatus which may be varied more or less according to the conditions and
circumstances under which it is to be used..
.
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 is :-
The combination with the ventilating apparatus consisting of the pipe a
chambers a¹ a³, cowl b, and steam jet c, of the funnel shaped vessel e and discharge
pipe g, arranged and operating substantially as and for the purpose described and
shewn in the drawing.