An Improved Construction of Metal Floorings or Roofings for Bridges and other Structures.
Year: 1888

page_text: Date of Application, 29th May, 1888
Complete Specification Left, 27th Oct., 1888
Complete Specification Accepted, 30th Nov., 1888
PROVISIONAL SPECIFICATION.
An Improved Construction of Metal Floorings or Roofings for
Bridges and other Structures.
I, GEORGE ANDREW HOBSON of Coverdale Lodge, Kings Road, Richmond in the
County of Surrey, Civil Engineer do hereby declare the nature of this invention to
be as follows:-
My invention relates to a light and simple construction of metal floorings or
roofings whereby I obtain great strength and great facility of erection, by the use of
ordinary forms of metal in such a manner that machinery can be readily applied for
securing the parts together.
For this purpose, I adopt a construction such as is illustrated by the accompanying
diagrams. Thus in Fig. 1 iron or steel bars A of T section or headed bars such as B
are rivetted between the flanges of plates C which are bent at their opposite edges to
form these flanges, and which extend diagonally from the upper to the lower lines
of bars.
These bars may be of other sections such as those of trough shape D in Fig. 2.
It will be seen that the rivets for the upper bars can all be inserted and completed
on the upper side of the structure, and in like manner those for the lower bars can be
inserted and completed on the under side, all the rivets being thus accessible on cach
side of the structure, so that they can be readily and effectually dealt with either by
hand or by ordinary rivetting machines.
ABEL & IMRAY,
Agents for the Applicant.

page_text: Bridges and other Structures. ·
I, GEORGE ANDREW HOBSON, of Coverdale Lodge, Kings Road, Richmond, in the
County of Surrey, Civil Engineer, 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:-
My invention relates to a light and simple construction of metal floorings or
roofings, whereby I obtain great strength and great facility of erection, by the use of
ordinary forms of metal in such a manner that machinery can be readily applied, for
securing the parts together.
For this purpose, I adopt a construction such as is illustrated by the diagrams
accompanying my Provisional Specification. Thus in Fig. 1 iron or steel bars A of
Tsection or headed bars such as Bare rivetted between the Hanges of plates C which
are bent at their opposite edges to form these flanges, and which extend diagonally
from the upper to the lower lines of bars. These bars may be of other sections, such
as those of trough shape Din Fig. 2. In all cases the ends of the rivets R are accessible
on opposite sides of the rib to which the plate flange is attached, so that a rivetting
machine can be run along the row of rivets finishing them successively.
I am aware that it has been proposed to construct floorings for bridges by rivetting
diagonal plates to the flanges of upper and lower girders of trough like section and
therefore make no claim to such construction, but having now particularly described
and ascertained the nature of. this invention and in what manner the same is to
be performed, I declare that what I claim is :—
A flooring or roofing for bridges and other structures consisting of upper and lower
bars of Tor of headed section connected by diagonal plates, flanged and rivetted to
the bars, substantially as described with reference to Fig. 1 of the drawings accom-
panying my Provisional Specification.
3511
J 1000