Improved Channel Bar for Ships' Keels, Applicable also for Girders and the like.
Year: 1888

page_text: Date of Application, 17th Jan., 1888
Complete Specification Left, 25th Aug., 1888
Complete Specification Accepted, 5th Oct., 1888
Improved Channel Bar for Ships' Keels, Applicable also for Girders
and the like.
1, JOHN SANDERSON of No. 149 Albert Road, Jarrow-on-Tyne, Ship plater, do
hereby declare the nature of this invention to be as follows:-
The object of my invention is to provide a channel bar having three or more flanges
or members for the keels of ships, and which is also applicable for use as girders
and for like purposes where considerable tensile strength is required.
In its primary application to ships keels, I produce a channel bar of malleable
iron, steel or other suitable metal having two outer, and one or more centre or inner
flanges. To the inner faces of the outer flanges are secured by rivetting or like
suitable means the "frame ends" of the vessel, which are turned down to meet the
flanges, the "shell plates" being bent or shaped to correspond with the conformation
of the exterior faces of the outer flanges to which they are secured; said shell plates,
when fitted, presenting a flush surface fore and aft according to the shape and rise
of the frames.
The keelson plate is secured to the centre or inner flange, which latter may be of
single thickness, or, should greater strength be desired the inner flange may be of
double thickness, a longitudinal groove being cut therein, into which is inserted and
secured the keelson plate; or, the channel bar may, in the process of manufacture,
have two independent centre or inner flanges formed thereon.
In attaching the stem and stern posts to the channel bar above described according
to my invention, the centre flange or flanges would be cut away as far as necessary,
and the channel bar secured to the stem and stern posts in a manner similar to that
adopted for the present box keel plate.
The spances between the inner and outer flanges of the channel bar serve as water
ways or channels for draining or conveying away accumulations of bilge water.
Dated this Sixteenth day of January 1888.
JAMES
STEVENSON,
Gray's Inn Chambers,
20, High Holborn, London, W.C.,
Agent for Applicant.

page_text: Improved Channel Bar for Ships' Keels, Applicable also for Girders
and the like.
I, JOHN SANDERSON of 149 Albert Road, Jarrow on Tyne, Ship plater, 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:
The object of my Invention is to provide a channel bar having three or four flanges
or members, for the keels of ships, and which is also applicable for use as girders
and for like purposes where considerable tensile strength is required.
In order that my Invention may be the better understood I have appended the
accompanying sheet of drawings in which Figure 1 represents a sectional elevational
view of a channel bar formed in accordance with my invention; Figure 2 is a similar
view, to a reduced scale, showing shell plate and frame attached to the channel bar ;
and Figure 3. is a sectional elevational view of a channel bar for use in flat bottomed
vessels.
In carrying out my invention I produce a channel bar A of malleable iron, steel,
or other suitable metal, having two outer flanges B B and a centre flange C. To the
inner faces of the flanges B, B, are secured by rivetting or like suitable means, the
frame ends D, D, Figure 2, of the vessel, which are turned down or shaped to meet
the curve of said flanges B B. The shell plates E, E, are also bent or shaped to
correspond with the conformation of the exterior faces of the flanges B, B, aforesaid,
to which they are secured; said shell plates E, E, when fitted, presenting a flush
surface fore and aft according to the shape and rise of the frames.
The centre or inner flange C of the channel bar A to which is secured the centre
keelson-plate F may be of single thickness, or, should greater strength be required, as
in the case of the largest types of vessels, such for instance as Government ships, the
inner flange C. may be of double thickness, a longitudinal groove being cut therein,
into which is inserted and secured the keelson-plate F above mentioned; which
latter would thus have a flange on each side, as shown by the dotted lines in
Figure 2.
The flanges B, B, of the channel bar A, may be formed to any suitable angle,
ranging from 1° to 90°, to allow of the adaptation of my improved channel bar to
flat bottomed vessels as shown in Figure 3.
In attaching the stem and stern posts to the channel bar above described, the centre
flange or flanges C would be cut away as far as necessary, to form a connection with
the stem and sternpost in a manner similar to that adopted for box keel plates at
present in use.
The spaces a, a, between the outer flanges B, B, and inner flange or flanges C of
the channel bar A serve as ways or channels for draining the bottom of the ship.
In the application of my improved channel bar for use as girders, the flanges BB
may be formed to any desired angle according to the conditions under. which said
channel-bar girders are to be applied.

page_text: Channel bars inade in the manner and form above described possess great tensile
strength, and are capable of withstanding severe strain; they also impart additional
strength to the centre keelson plates when adapted to the bottoms of vessels.
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
--
First. The improved channel bar for ships' keels applicable also for girders and
the like substantially as herein described and shown in the accompanying drawings.
Second. In the improved channel bar referred to in the preceding claim, the
formation of same with one or two centre flanges and two outer flanges which latter
are bent to any desired angle for adaptation to flat bottomed and other shaped Vessels
substantially as herein set forth.
"
T
1000
JAMES
STEVENSON,
Gray's Inn Chambers,
20, High Holborn, London, W.C.,
Agent for Applicant.