An Improvement in Bracket Floor Plates of Cellular Double Botto s for Water Ballast in Ships
Year: 1892

page_text: Date of Application, 19th Oct., 1892
Complete Specification Left, 5th June, 1893-Accepted, 29th July, 1893
PROVISIONAL SPECIFICATION.
An Improvement in Bracket Floor Plates of Cellular Double Botto s
for Water Ballast in Ships.
I, GEORGE WILLIAM SIVEWRIGHT, of 5, Radcliffe Terrace, Hartlepool, in
the County of Durham, Shipbuilder, do hereby declare the nature of this invention
to be as follows:-
•
My invention relates to an improved construction of bracket floor plates such
as are used for supporting and strengthening the double bottoms of iron and steel
ships, and consists of flanges to edge or edges and especially the vertical edge or
edges of such brackets, and increases their strength so that with equal material
they are stronger to form a vertical support to the top of the tank than is the case
with brackets such as have hitherto been employed.
In carrying out my invention these bracket floor plates may be fitted in any of
the usual positions such as at centre line and at the tank side or at any other inter-
mediate or suitable position, but instead of constructing their edges without
supports other than afforded by the thickness of the plate and which has hitherto
been the case, I stiffen them by vertically flanging them so as to give the bracket
floors more strength at their hitherto weakest part without employing a combi-
nation of parts to be riveted together as if angle irons or the like are employed for
the same purpose.
Dated this 18th dox of October 1892.
G. J. CLARKSON,
Stockton-on-Tees, Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improvement in Bracket Floor Plates of Cellular Double Bottoms
for Water Ballast in Ships.
I, GEORGE WILLIAM SIVEWRIGHT, of 5, Radcliffe Terrace, Hartlepool in
the County of Durham, Shipbuilder, do hereby declare the nature of this inven-
tion 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 an improved construction of bracket floor plates to be
used in combination with the double bottoms of iron and steel ships for supporting
and strengthening same and consists in flanging the said bracket floor plates in the
manner hereinafter described and illustrated in Figures 1, 2 and 3 of the accom-
panying drawing, in which Figure 1 illustrates by way of example a longitudinal
elevation of a floor plate constructed according to my invention and Figures 2 and 3
are sectional views illustrating the relative positions of the bracket floor plates to
the tank side and centre keelson respectively and in a manner intended to show up
more conspicuously the essential feature of my invention which consists in flanging
the edge of the bracket floor plates in the manner shown and hereinafter described.
In carrying out my invention these bracket floor plates are fitted in any of the
usual positions such as at the centre line and tank side or at any other intermediate
or suitable position according to the general arrangement of parts constituting the
ships double bottom to which my invention is to be adapted. But instead of con-
structing the said bracket plates with an unsupported vertical edge other than is
afforded by the thickness and rigidity of the plate itself and which has hitherto
been the case I stiffen the edges by vertically flanging them at a, so as to give the
bracket floor plates b, more strength and rigidity at their hitherto weakest part

page_text: without employing a combination of parts to be rivetted together as if angle irons
or the like are employed for the same purpose.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
In the construction of cellular double bottoms for water ballast in ships, the use
in combination therewith of bracket floor plates having their vertical edges flanged
as and for the purpose as herein before described and illustrated in the accom-
panying drawing.
T
1000
UHIS
uaj
G. J. CLARKSON,
Chartered Patent Agent,
Stockton-on-Tees, Agent for the Applicant.