Improved Beams or Sections, more especially Designed for Use in Shipbuilding.
Year: 1896

page_text: Improved Beams or Sections, more especially Designed for Use
in Shipbuilding.
We, HUGH LAING, Shipbuilder and WILHELM HÖк Naval Architect both of
Deptford Yard Sunderland in the County of Durham, do hereby declare the nature
of this invention to be as follows:-
This invention relates to improved beams or sections more especially designed for
use in shipbuilding.
According to one design we form a bulb angle beam or bar in which the bulb is of
larger size than usual so as to assimilate in strength weight and depth channel
sectioned bars of similar scantlings whereby important economical advantages can be
obtained in handling weight cargo space and otherwise.
By a modification we form trough or channel sections in which the flanges are
shorter and thicker than usual resembling bulbs and square or angled slightly as
regards the web the corners where occurring being sharp or rounded off as desired;
such a bar may have one or more intermediate flange projections equivalent to ribs
on its web of section more or less corresponding to the flanges aforesaid and is
specially useful for pillaring purposes or by a further modification we form a bar
the web of which may have on one side and at or towards its end a flange or bulb
and at the other side but not quite opposite thereto a more or less similar projection,
such a section being specially useful for door frame or equivalent work.
The sections are intended to be rolled in iron or steel,
Dated this 16th day of May 1896.
A. CRAWHALL CHAPMAN,
3 St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent.
COMPLETE SPECIFICATION.
Improved Beams or Sections, more especially Designed for Use
in Shipbuilding.
We, HUGH LAING, Shipbuilder. and WILHELM HÖK, Naval Architect, both of
Deptford Yard, Sunderland in the County of Durham, 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 :-
This invention relates to the manufacture and forms of beams or sections and it
refers more especially to rolled bars for use in shipbuilding; we will fully describe
our improvements and in so doing will refer to the accompanying drawings which
represent in transverse section our improved forms.
In Figure 1 we illustrate a bulb angle bar constructed according to our improve-
ments and suitable for deck beams, frames or stiffeners.

page_text: It consists of a web A, right angle flange A¹ and, at the other end, the special
bulb B, which is made of a larger size than usual and shaped as shown. This bar is
of an area equal in strength, weight and depth to an ordinary channel sectioned bar
of similar scantlings and by its use important economical advantages are obtained in
handling due to it being easier to turn and there being only one flange to bevel
when used for frames, and in weight and in the saving of cargo space owing to
the reduced dimensions as compared with ordinary bulb angle bars.
By a modification of this section shown in Figure 2, we form a regular bar having
a similar bulb B on each end of its web A thus making a trough or channel
section in which both the bulbs B B forming the end flanges are shorter and thicker
than ordinary flanges and square or angled slightly as regards the web, the corners,
where occurring, being sharp or rounded off as desired; such a bar may have on
its web as shown in Figure 3 one or more intermediate bulbular projections such
as B' equivalent to ribs and of section or sections the same as or more or less
corresponding to the bulbs B B illustrated.
The two forms shown in Figures 2 and 3 are specially useful for pillaring
purposes, and a built up pillar is shown in Figure 4 for the sake of illustrating
their adaptation thereto, D D being two ordinary bulb angle bars, or bars of the
improved section shown in Figure 1. In addition to the increased cargo space
obtained by substituting these forms for ordinary channel bars they also obviate
damage to the cargo by reason of their rounded surfaces.
By a further modification shown in Figure 5, we roll a bar A having on one side,
at its end, a flange or bulb E, and at the other side, not quite opposite thereto, a
somewhat similar projection F. This form is specially useful for door frame or
equivalent work as illustrated in Figure 6, the flange F forming a bead or moulding
for the doorway and enclosing the door G, while the flange E, on the other side,
serves to strengthen the frame.
Bars of the sections above specified are rolled in iron or steel in the usual
manner.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
For use especially in shipbuilding the several improved forms or sections of rolled
iron or steel bars as herein described in reference to and illustrated respectively in
Figure 1, Figures 2 and 3, and Figure 5 of the drawings.
Dated this 16th day of February 1897
Dated this 16th day of February 1897
For the Applicants,
J. C. CHAPMAN,
70 Chancery Lane, London, W.C., and
3 St. Nicholas Buildings, Newcastle-on-Tyne,
Chartered Patent Agent.