Year: 1887

page_text: Date of Application, 18th Apr., 1887
Complete Left, 10th Jan., 1888
Complete Accepted, 10th Feb., 1888
I, GEORGE ALFRED DE PENNING, of 13 European Asylum Lane, Calcutta, in the
Empire of India, Patent Agent do hereby declare the nature of this invention to be as
follows:-
My invention relates to a construction of steam vessels in such a manner that they
are capable of great speed and have great steadiness and freedom from rolling. For
this purpose, I make the hull of the vessel in four parts, each being in the form of a
long narrow vessel having a very fine run. The two middle parts are placed end to
end, and these together constitute the main body of the hull, and preferably have
screw propellors situated in the narrow part or dead wood where the stern of the one
part meets the stern of the other. The other two parts, which are narrower and finer
in their run but not so long as the two middle parts together, are placed one on each
side of the middle part, with free channels between them and the middle parts. All
the four parts are held together by two or more strong decks, stiffened by diagonals,
covering them at some height above the water line. The two side hulls may have
propellers at their sterns.
ABEL & IMRAY,
Agents for the Applicant.

page_text: I, GEORGE ALFRED DE PENNING of 13 European Asylum Lane Calcutta in the
Empire of India Patent Agent 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 :-
My invention relates to a construction of steam vessels in such a manner that they
are capable of great speed and have great steadiness and freedom from rolling. For
this purpose I make the hull of the vessel in four parts, each being in the form of a
long narrow vessel having a very fine run. The two middle parts are placed end to
end, and these together constitute the main body of the hull, and preferably have
screw propellors situated in the narrow part or dead wood where the stern of the one
part meets the bow of the other. The other two parts which are narrower and finer
in their run but not so long as the two middle parts together, are placed one on each
side of the middle parts, with free channels between them and the middle parts. All
the four parts are held together by two or more strong decks, stiffened by diagonals,
covering them at some height above the water line. The two side hulls may have
propellors at their sterns.
Fig. 1 of the accompanying drawings is a plan at or below the water line of a
quadruple vessel according to this invention Fig. 5 is a plan taken on one of the decks
shewing how the parts may be braced together by diagonals, Fig. 6 is a side view of
the vessel, Fig. 3 is a transverse section whilst, in contrast therewith, Figs. 2 and 4
illustrate sections of vessels of ordinary form. Fig. 7 is a part longitudinal section at
the middle and Figs. 8 and 9 are respectively part transverse and longitudinal sections
at the end of the quadruple vessel.
The two middle hulls A and B meet or nearly meet in the middle where there may
be two propellers as shewn in Fig. 7 these either being worked by separate engines
in A and B or being on one shaft worked by an engine in one of the parts A or B.
The two side hulls C and D, which are placed so as to leave clear water channels
between them and the middle hulls A and B, may also have propellers at their ends
as indicated by Figs. 8 and 9. Above the water line there may be several decks
covering and connecting the four hulls as indicated in Figs. 3 and 6, and these decks
are preferably framed, as shewn in Fig. 5, with diagonal braces to give the necessary
rigidity. On comparing the section Fig. 3 with ordinary sections as shewn by
Figs. 2 and 4 it will be seen that great stability in the water is obtained by the
quadruple construction, and it will be seen by referring to the plan Fig. 1 that this
stability is consistent with very fine lines suitable for high speeds, for which great

page_text: power may be applied by the four propellers. As the four hulls, so far as they are
immersed and for some distance above the water line, are quite separate, they constitute
of themselves several watertight compartments, and they may be subdivided into
subsidiary compartments so as the better to ensure safety in case of local accident or
leakage.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The construction of a steam vessel with four hulls, two middle hulls in line and a
lateral hull at each side, these hulls being all covered and connected together by decks
above the water line, substantially as and for the purposes herein set forth.
ABEL & IMRAY,
Agents for the Applicant.