An Improvement in Floor Plates and Keelsons, and in the Method. of Fitting them in connection with Inner Bottoms of Vessels.
Year: 1890

page_text: Date of Application, 1st Feb., 1890
Complete Specification Left, 25th June, 1890-Accepted, 26th July, 1890
PROVISIONAL SPECIFICATION.
An Improvement in Floor Plates and Keelsons, and in the Method.
of Fitting them in connection with Inner Bottoms of Vessels.
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 floor plates and keelsons and to the method of fitting them
in connection with inner bottoms of vessels, and has for its object to offect this by a
more simple combination of parts so as to reduce both the weight of material and
cost of construction.
Hitherto it has been the practice in fitting down floor plates and keelsons to the
shell of vessels in the bottom to connect the bottom edges of the said floor plates and
keelsons to the bottom shell plating by angle bars the said angle bars forming
flanges along the bottom so that they may be connected to shell plating by
rivetting.
In carrying out my invention I flange the bottom edges of the floor plates and
keelsons and rivet them direct to the bottom shell of the vessel thereby dispensing
with the angle bars hitherto used in fitting them to the bottom of vessels and effecting
the connection with one row of rivets through the horizontal flange instead of the
two rows required through the angle iron.
Dated this 21st dose of Ion 1800
G. J. CLARKSON,
Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improvement in Floor Plates and Keelsons, and in the Method.
of Fitting them in connection with Inner Bottoms of Vessels.
I, GEORGE WILLIAM SIVEWRIGHT, of 5, Radcliffe Terrace, Hartlepool, in the
County of Durham, Shipbuilder, do hereby declare the nature of this invention and
in what manner the same is to be performed, to be particularly described and ascer
tained in and by the following statement :-
My Invention relates to floor plates and keelsons and to the method of fitting them
in connection with inner bottoms of vessels, and has for its object to effect this by a
more simple combination of parts so as to reduce both the weight of material and
cost of construction.
Hitherto it has been the practice in fitting down floor plates and keelsons to the
shell of vessels in the bottom to connect the bottom edges of the said floor plates and
keelsons to the bottom shell plating by angle bars, the said angle bars forming
flanges along the bottom so that they may be connected to shell plating by
rivetting.
In fitting floor plates and keelsons in connection with inner bottoms of vessels.
according to my invention I dispense with angle bars as hitherto employed, and in
substitution therefor I flange the bottom edges of the said floor plates and keelsons
and rivet them direct to the bottom shell of the vessel.
And in order that my invention may be fully understood and clearly distinguished
from the existing means employed for fitting floor plates and keelsons to the inner
bottoms of vessels, and which my improvements entirely dispense with, I will now
refer to the accompanying drawings in which the figures illustrate sectional parts of
a ships' bottom taken transversely and longitudinally.
In Figures 1 and 2, which are corresponding part sectional views which illustrate

page_text: the arrangement and construction of floor plates and keelsons as hitherto provided in
ships' bottoms, the floor plates a and keelsons b it will he observed are connected
along their bottom edges to the bottom shell plating by being rivetted to angle
bars C, which angle bars have hitherto been employed to serve as flanges to the
floor plates and keelsons by which they may be connected to the shell plating by
rivetting.
In Figures 3 and 4, which illustrate my improved method of fitting floor plates
and keelsons to the inner bottoms of vessels, 1 flange the bottom edges cc of the
floor plates a and keelsons band rivet them direct to the bottom shell of the vessel,
thereby dispensing with the angle bars hitherto used to serve the purpose of flanges
and effect the required connection with one row of rivets through the horizontal
flange cc instead of the two rows of rivets necessarily required to effect the con-
nection by angle bars.
When I make the floor plates straight in the bottom as shown more particularly in
Figure 3 I can put this class of floor plates into the flanging machine, otherwise these
floor plates can be either curved or straight as may be preferred.
Having now particularly described and ascertained the nature of my inven-
tion, and in what manner the same is to be carried into effect, I declare that
what I claim is :-
In the construction and arrangement of floor plates and keelsons in connection
with inner bottoms of vessels, the rivetting of the said floor plates and keelsons
I direct to the bottom shell of the vessel by flanging bottom edges thereof, substantially
as and for the purpose as hereinbefore described with reference to the accompanying
drawings.
G. J. CLARKSON,
Stockton-on-Tees, Agent for the Applicant.