Improvements in the Construction of Steam or other Vessels Fitted with Side Hoppers.
Year: 1886

page_text: Date of Application, 1st Apr., 1886.
Complete Left, 1st Jan., 1887.
Complete Accepted, 1st Feb., 1887.
Improvements in the Construction of Steam or other Vessels
Fitted with Side Hoppers.
I WILLIAM DOBSON of The Chesters, Jesmond, in the City and County of Newcastle-
upon-Tyne, Ship Builder do hereby declare the nature of this invention to be as
follows:-
1
The description of navigable vessels to which my invention applies are such as are
used for the conveyance of stone, slag or other material for the construction of river
walls or embankments, &c., being constructed with an internal saddle back forming on
each side inclined planes on which the cargo rests and fitted with hopper doors at the
sides of the vessel so that the vessel in shallow water when almost touching the ground
can discharge and float clear of the discharged cargo.
By my invention I construct within the saddle back referred to water ballast tanks
divided in the centre by a longitudinal vertical bulkhead so that either tank may be
filled or emptied independently of the other and I also construct water ballast tanks in
the wings of the vessel and I arrange a series of pipes, valves and pumping appliances
so as that I can fill and empty the tanks at will whereby I am enabled to regulate or to
preserve the trim of the vessel to any desired degree whether taking in or about to
take in or discharging or about to discharge cargo, and so as that for instance the
whole of the cargo on one side may be taken in or discharged as the case may be
with any desired trim while the other side is empty or remains full.-I can thus
discharge cargo from one side at any desired part of the works and then move the ship
in good trim to any other part of the works so as to discharge the other side.
I construct the tanks within the saddle so as that they may be filled or partly filled
from the river or sea by the mere opening of a valve and so that either of them may
be filled from the opposite wing tank.-I arrange pumping appliances to fill such parts
of the water ballast tanks as cannot be conveniently filled by gravity.
My improvements in the construction of these vessels applies also to the mode of
attaching the upper straps of the hinges of the hopper doors. I forge this strap
double and rivet one side to the outside of the ship and the other side of it to the
inner side of the wing tank whereby I obtain a great increase of stability in the
hinges and diminish liability to accident.
TAMRON
CHADEERD
ப
JAMESON & SHADDDDD
Agents for William Dobson,

page_text: Improvements in the Construction of Steam or other Vessels
Fitted with Side Hoppers.¨¯
I, WILLIAM DOBSON, of The Chesters, Jesmond in the City and County of New-
castle-on-Tyne Ship Builder, do hereby declare the nature of my invention for
IMPROVEMENTS IN THE CONSTRUCTION OF STEAM OR OTHER VESSELS FITTED WITH
SIDE HOPPERS, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
The description of navigable vessels to which my Invention applies are such as are
used for the conveyance of Stone, Slag, or other material for the construction of river
walls or embankments &c., being constructed with an internal saddle back forming on
each side inclined planes on which the cargo rests and fitted with hopper doors at the
sides of the vessel so as that the vessel in shallow water when almost touching the
ground can discharge and float clear of the discharged cargo.
By my Invention I construct within the saddle back referred to water ballast tanks
shown in the drawing and marked A and B divided in the centre by a longitudinal
vertical bulkhead marked so that either tank may be filled or emptied independently
of the other. And I also construct water ballast tanks in the wings of the vessel
marked respectively D and E and I arrange a series of pipes marked Fe, and Fd, and
valves and pumping appliances of any convenient description, not shewn in the
drawing, so as that I can fill and empty the tanks at will, whereby I am enabled to
regulate or to preserve the trim of the vessel to any desired degree whether taking in
or about to take in, or discharging or about to discharge cargo, and so as that for
instance the whole of the cargo on one side may be taken in or discharged as the case
may be with any desired trim while the other side is empty or remains full.-In the
drawing I have shewn cargo in the vessel marked G, and cargo discharged marked H,
the trim of the vessel being preserved by the weight of water in the tanks marked D
and A. Before the discharge of the portion of cargo H, the tank A and the tank 1)
would have been represented as empty. Simultaneously however with the commence-
ment of the discharge of cargo a valve or valves are opened to the river or sea to fill
tank A, and powerful pumping arrangements to fill tank D.-On the discharge of the
portion of cargo marked G, the water would in like manner pass from tank D to tank B.
can thus discharge cargo from one side at any desired part of the works and then
remove the ship in good trim to any other part of the works so as to discharge the
other side.
I construct the tanks within the saddle so as that they may be filled or partly filled
from the river or sea by the mere opening of a valve and so as that either of them
may be filled from the opposite wing tank. I arrange pumping appliances to fill such
parts of the water ballast tanks as cannot be conveniently filled by gravity.

page_text: My improvements in the construction of these vessels applies also to the mode of
attaching the upper straps of the hinges of the hopper doors.
I forge these straps double and rivet one side to the outside of the ship and the
other side of it to the inner side of the wing tank as shewn in the drawing whereby I
obtain a great increase of stability in the hinge and diminish liability to accident.
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 :-
1st. The arrangement of ballast tanks, pipes, valves and pumping appliances for
vessels with side hoppers, substantially as described.
2nd. The construction of hinge butts for ships hopper doors, substantially as
JAMESON & SCHAEFFER,
Agents for Wm. Dobson.