Improvements in the Construction and Arrangement of Cargo Vessels.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Construction and Arrangement of Cargo
Vessels.
I, THOMAS BREDSDORFF, Manager of the Flensburg Shipbuilding Yard, Flens-
burg, in the German Empire, do hereby declare the nature of this invention to be
as follows:
-
My invention relates to the construction and arrangement of cargo vessels of
the spar deck type and has special reference to the form or construction of the
ships' sides in relation to the deck and hold space with their accessory parts.
Vessels constructed and arranged according to this invention are specially adap-
ted for carrying cargoes of grain, coal or the like loose material in bulk or for
carrying timber in lengths, or for carrying a mixed cargo of timber on deck and
grain or the like loose material in bulk in the hold. The following description
will serve to show in what way these objects and improvements are attained and
carried out.
Following the spar deck style of construction illustrated in the drawings annexed
to and forming part of the Specification of Letters Patent N° 3951 of 1895 I pro-
vide an upper or auxiliary hold space above the level of the weather deck, but
instead of forming the sides or walls thereof in steps I set them to the same slope
as coals or grain in bulk fall or settle down by their own weight so that this upper
hold space if properly charged makes the vessel a perfect self trimmer for such
cargoes in bulk and renders them so little liable to shift that shifting boards may
be dispensed with. But instead of rounding off the hull above the water line, I
carry the sides of the ship straight up to the usual weather deck level and provide
a level deck space on either side of the central or upper hold erection the ships'
sides being then continued at the requisite slope to the spar deck. Along the
outside or edge of the level deck space so formed stays or posts are provided at
suitable intervals and accomodation is provided for logs of timber which if suit-
ably lashed by chains or the like tensile appliances are securely lodged between
the said posts and the sloping parts of the ships' sides which form the walls of the
upper hold erection. This provides a substantial addition to the cargo carrying
capacity of the vessel without detriment to the stability or sea worthiness thereof
there being no loose cargo on deck. But in order to provide free communication
between the upper or auxiliary hold space and the lower or main hold space, and
unobstructed by the transverse weather deck beams extending across the hold
space, I carry these up in the manner shown in the drawing annexed to the
Specification of Patent N° 3951 of 1895, but for structural compactness these deck
beams are preferably made to follow the sloping contour of the upper hold space
erection instead of being stepped and gussetted with knee plates but may if pre-
ferred be carried across the vessel as in weatherdecks of ordinary construction,
The main hold space and upper hold space are then available for timber cargoes
as well as for cargoes of coal or grain in bulk.
In other details of construction and arrangement of parts all conducing to the

page_text: object of my invention but not essential to it and open to modification. I provide
the stays for the masts or cranes mounted and secured on the upper hold erection
not as is usual on the gunwale to give room for timber logs in very long lengths
for which purpose also the shrouds are arranged to stand beside the hatch out of
the way of the timber the masts and crane posts standing on the top of the deck
instead of passing down through the hold. The cross bulkheads are sloped in
fore and after holds.
G. J. CLARKSON,
Chartered Patent Agent, Stockton-on-Tees,
Agent for the Applicant.
Improvements in the Construction and Arrangement of Cargo
Vessels.
I, THOMAS BREDSDORFF, Manager of the Flensburg Shipbuilding Yard, Flens-
burg, in the German Empire, 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 the construction and arrangement of cargo vessels of the
spar deck type and has special reference to the form or construction of the ship's
sides in relation to the deck and hold space with their accessory parts. Vessels
constructed and arranged according to this invention are specially adapted for carry-
ing cargoes of grain, coal, or the like loose material in bulk or for carrying timber
in lengths, or for carrying a mixed cargo of timber on deck, and grain, or the
like loose material in bulk in the hold. The following description taken in con-
junction with the annexed drawings will serve to show in what way these objects
and improvements are attained and carried out, the drawings showing in trans-
verse sectional view in Fig. 1, a vessel embodying the essential features of our
invention, and in Fig. 2, a part plan view showing in what way our improved
construction affects the general arrangement of the ship's deck.
Following the spar deck style of construction in which the ship's sides are
carried up to a deck extending at the usual height, the whole ship's length as a
continuation of the bridge poop and forecastle. I modify the construction illus-
trated in the drawings, annexed to and forming part of the Specification of Letters
Patent No 2951 of 1895, in certain respects. That is to say, that I provide an
upper or auxiliary hold space A above the weather deck level, but instead of form-
ing the sides or wall thereof in steps, I set them to a slope B, at which coals or
grain in bulk fall or settle down by their own weight, so that when this upper hold
space is properly charged, the vessel becomes a perfect self trimmer for such
cargoes in bulk and renders them so little liable to shift that shifting boards may
be dispensed with. But instead of rounding off the hull above the water line, I
carry the sides of the ship straight up to the usual weather deck level and pro-
vide a level deck space C on either side of the central or upper hold erection, the
ship's sides being then continued at the requisite or self trimming slope to the
spar deck D. Along the outside fringe or edge of the level deck space so formed,
stays or posts E are provided at suitable intervals and accomodation is provided
for logs of timber, as shown in Fig. 1, which if suitably lashed by chains or the
like tensile appliances, are securely lodged between the said posts and the sloping
parts B of the ship's sides which form the walls of the upper hold erection. This
provides a substantial addition to the cargo carrying capacity of the vessel with-

page_text: out detriment to the stability or seaworthiness thereof, there being no loose cargo
on deck. Similar posts E¹ are also preferably provided along the spar deck as
shown in Fig. 2. But in order to provide free communication between the upper
or auxiliary hold space and the lower or main hold space and unobstructed by the
transverse weather deck beams extending across the hold space, I carry these up
in the manner shown in the drawing annexed to the Specification of latent
No. 3951 of 1895, but for structural compactness these deck beams are preferably
made to follow the sloping contour of the upper hold space erection instead of
being stepped and gusseted with knee plates, but may if preferred be carried across
the vessel as in weather decks of ordinary construction. The main hold space and
upper hold space are then available for timber cargoes as well as cargoes of coal
or grain in bulk. In other details of construction and arrangement of parts con-
ducing to the object of my invention but not separately essential thereto and open
to modification, I provide the stays F for the masts G or for cranes mounted and
secured on the upper hold erection and not as is usual on the gunwale. This
gives room for timber logs in very long lengths for which purpose also the shrouds
are arranged to stand beside the hatch, out of the way of the timber, the masts
and crane posts standing on the top of the deck instead of passing down through
the hold. The cross bulkheads are sloped in fore and after holds to increase the
self trimming.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be, or may be performed or carried into prac-
tical effect, I would have it understood that I am aware that cargo vessels have been
built with upper hold erections on more or less self trimming lines and make no
broad claim for such an arrangement, but only in the case of spar deck vessels
in which the sides of the upper hold erection are to be considered, the ship's sides
affording by their contour outside accomodation for stowing timber as well as a
self-trimming slope in the upper hold space, and I declare that what I claim is :-
1. The constructional arrangement of cargo vessels of the spar deck type for
carrying cargo in bulk in which the sides of the vessel are carried down from the
spar deck to the weather deck level at a self trimming slope, and the sides of the
ship's hull proper are carried up to the same level in straight lines, so that a
weather deck space is provided on either side of the upper hold erection on which
logs of timber can be stowed by means of stays or posts and suitable lashing
appliance, substantially as hereinbefore described with reference to the accompany-
ing drawings.
2. In cargo vessels as covered by the preceding claim the arrangement that the
masts and crane posts instead of passing down through the hold, are mounted on
the upper hold erection, and secured thereto by stays instead of to the gunwale,
substantially as and for the purpose as herein before described.
Dated this 7th day OL rebruary Tovo.
reprua
1000.
G. J. CLARKSON,
Chartered Patent Agent, Stockton-on-Tees and Hull.
Agent for the Applicant.