Improvements in the Deck "Water Delivery Ports" of Vessels.
Year: 1888

page_text: Date of Application, 18th Oct., 1888
Complete Specification Left, 19th Aug.. 1889-Accepted, 28th Sept., 1889
PROVISIONAL SPECIFICATION.
Improvements in the Deck "Water Delivery Ports" of Vessels.
1 WILLIAM SMITH MELVILLE of 18 Frederick Place Mile End, London in the
County of Middlesex, Naval Architect & Surveyor do hereby declare the nature of
this invention to be as follows:-
A port hole having been cut in the Bulwarks; I fit into it; a Port of Iron or other
suitable material; Balanced & secured at the Lower Edge, so as only to cant outward.
On each side of the Port inwards, flush with edges, is fastened a plate or wing at an
angle of ninety degrees wide at bottom, & tapering off at top. The lower inner
part of wing plate, or, the fore & aft bolt, holding & spreading the two side plates ;
is loaded to give a righting power; after the Port has opened, and discharged water
on deck; by pressure from within. A modification of my Invention consists in
fitting half a Port; to save expense to ships having ordinary flap ports; by linking
my lower half of Port, to upper half of port when they will close & open in unison,
& to the upper half can be attached a Flange at lower edge, to concentrate &
accentuate the rush of water, & conduce to the quickly opening of Ports.
W. S. MELVILLE.
COMPLETE SPECIFICATION.
Improvements in the Deck Water Delivery Ports of Vessels.
I WILLIAM SMITH MELVILLE of 18 Frederick Place Mile End Old Town Co. of
Middlesex, Naval Architect & Surveyor, do hereby declare the nature of this invention
and in what manner the same is to be performed, to he particularly described and
ascertained in and by the following statement:—
A Port hole having been cut in the Bulwarks, I fit into it a Port of Iron or other
suitable material, balanced & secured at the Lower edge so as only to cant outward.
On cach side of the Port inwards flush with edges of Port, or slightly inside edges,
is fastened a plate or wing at an angle of 90% or square to Port, wide at bottom &
tapering off at top; these wing plates are held together & supported by a hollow or
displacement Tube which can be loaded or not as required internally to give a righting
& stable power to the Port, & to close Port after the water on deck has been discharged
by pressure from within. The lower edge of Port is turned to strengthen it, partly
or wholly, to carry the connecting bolt or bolts which secure Port to ships side & on
which it pivots on cleets on Bulwks. Displacement boxes or cases, aiding to form
stop against Bulwarks, to keep Port at required angle, so formed as to deflect any
fore & aft drift striking Port may be secured at Fore and aft side of Flanges, & guard
plate or plates may be attached to Bulwarks.
Angle Plate above Port to strengthen Bulwarks may also be added.
Supporting cleets or journals on Bulwarks may be secured by Bolts & nuts or
rivetted, so that Port may be unshipped when required for Cargo or otherwise.
Fig. Í shows Bulwark with Port closed.
22
"
11 Internal view of Port in Bulwarks.
III represents Port open for delivery.
P is the Port on all sections.
B represents Bulwark of vessel.
D Upper side of Deck.
T the displacement tube or counterbalance.
W Wings or displacement boxes if desired.
Curved line the Waterway & stays to Bulwarks under Rail.

page_text: I divide the incoming water from the outgoing, which is thrown upwards entering
below & delivering above the outside-sea by means of the flanges.
The Righting counterbalance being Tubular aided by the wing boxes, when
immersed loses a large portion of the weight which retains the Port in Vertical
position, this Port consequently opens much more easily than those hung on hinges,
which are very frequently set fast & very heavy to lift.
My Port opens to full extent clearing the decks at once; a thing of the greatest
moment; thus tightening the vessel, whereby the coming over of a following sea may
be avoided. It is of the greatest necessity for Seamen to enable them to work the
frightfully overladen shipping.
I do not limit myself to the precise details or form which may be varied to
circumstances; but so to act as to do this work substantially as set forth.
Having now particularly described and ascertained the nature of my said Inven-
tion & in what manner the same is to be performed, I declare that what I
claim is
A displacement Port, that will remain closed, no matter what angle a vessel rolls to
so that no water will come on deck except over the rail.
In witness whereof, I, the said William Smith Melville have hereunto set my
hand & seal, this Seventeenth day of August in the year of our Lord, One
thousand eight hundred & eighty nine.
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