Improved Arrangement of Plates Constituting a Novel Construction or Build up of Iron Bressummers and Girders.
Year: 1889

page_text: Date of Application, 7th Nov., 1889-Accepted, 14th Dec.,
18.9
COMT UMLU
Improved Arrangement of Plates Constituting a Novel Construction
or Build up of Iron Bressummers and Girders.
I ARTHUR WILLIAM RAMMAGE of 42. Old Broad Street, city of London, Engineer,
do hereby declare the nature of my said 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 has for object the construction or building up of Bressummers or
Box Girders in special sections and from certain shapes of rolled iron, to obtain great
strength and rigidity.
For the purpose of my invention I use channelled, flat, angled, Z, double tee,
trough and other shaped plates in the following order and as exemplified by the
annexed drawings.
According to the example shown at Figure 1 which is a perspective elevation partly
in section I arrange an inverted channel shaped plate A, two side flat plates B. B. and
two angled strips C. O. these being rivetted together as indicated to constitute an
open bottomed box Bressummer or Girder, except at the ends and at any part under
which is intended to place a column where I fix a plate D. D. as bearing plates, and
to prevent any tendency of the Bressummer or Girder to bend or
strengthening cheeks EE at intervals.
give" fit
According to Figure 2 of the annexed drawings the example of construction is of
the same, i.e. an open bottomed box, order but by a different arrangement of plates.
In this I use two shaped side plates F F and one flat top plate the upper flange
of the shaped plates F F being within the box and the two lower flanges F¹ Fi
outward, said outer flanges with the projecting edges of the top flat plate being with
the webs of the Z shaped plates stayed or strengthened by the cheeks E E.
Figures 3 and 4 show examples of Box Bressummers or Box Girders two upper flat
plates G, G, two channelled plates A two trough shaped plates H H and a bottom
fongitudinal plate the whole of which are rivetted together as indicated by the
figures mentioned. No side cheeks are required in either of these methods of
building up such articles.
According to Figure 5 the improved box bressummers or girders is composed of
two flanged channelled plates J. J. and a double tee rib K rivetted together as
indicated. The double tee rib K in this arrangement occupies a central position
within the two channelled plates JJ and is secured to both of thein, the flanges
of the channelled plates being rivetted to themselves as shewn.
Figure 6 is a similar view to Figure 2 but with two flanges at the top part of
the side plates FF.
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 1
claim is
1. The particular arrangement of plates constituting a Bressummer or Girder of
novel construction as shown at Figure 1 of the annexed drawings.
2. The particular arrangement of plates constituting a Bressummer or Girder of
novel construction as shown at Figure 2 of the annexed drawings.
3. The particular arrangement of plates constituting a Bressummer or Girder of
novel construction as shown at Figure 3 of the annexed drawings.
4. The particular arrangement of plates constituting a Bressummer or Girder of
novel construction as shown at Figure 4 of the annexed drawings.

page_text: 5. The particular arrangement of plates constituting a Bressummer or Girder of
novel construction as shown at Figure 5 of the annexed drawings.
6. The particular arrangement of plates constituting a Bressummer or Girder of
novel construction as shown at Figure 6 of the annexed drawings.
Dated this 7th day of November 1889.
H. GARDNER,
Per R. Core Gardner,
166, Fleet Street, London, Agent for the said A. W. Rammage.