Year: 1896

page_text: Date of Application, 24th Oct., 1896
Complete Specification Left, 23rd July, 1897-Accepted, 28th Aug., 1897
We GERALD BARKER of 1 Victoria Street Westminster in the County of London
Civil Engineer, and BARNABAS JAMES THOMAS, and JOSEPH JEX TAYLOR of the same
place Civil Engineers, do hereby declare the nature of this invention to be as
follows:-
The objects of this invention are
First. To provide a girder or girders of comparatively light construction which
shall be capable of withstanding strains of all kinds, particularly torsional strains,
more effectively than has been the case hitherto.
Second. To provide means whereby triangular or approximately triangular girders
with the apex upwards may be adapted to carry two lines of railway.
Under the first part. We trace two side girders of any usual construction together
at or near the top by plate lattice or other bracing or flooring so that a horizontal
girder or its equivalent is formed and we incline the two side girders so that the
lower booms approach close together, or such lower boons may be formed as one.
The carrying rails are supported on such bracing or flooring at or near the tops of the
side girders or otherwise as convenient. The whole forms a girder triangular or
approximately triangular in cross section of great strength particularly for resisting
torsion such as is caused for instance by a greater weight being brought on one rail
than on the other. Two or more triagular or approximately triangular girders as
above may be combined together for carrying two or more lines of railway and in this
case we may suitably connect or brace the several girders together. The triangular
or approximately triangular girders are carried on supports in any usual or convenient
manner, and it is advantageous that such girders be supported at or near the
extremities of their horizontal bracing.
Under the second part. We combine with a triangular or approximately triangular
girder longitudinal side girders inclining outwards and we connect such longitudinal
side girders with the triangular or approximately triangular girder by suitable ties or
bracing. The rails are supported on such ties or otherwise as convenient. Instead
of longitudinal side girders, struts and ties forming brackets suitably braced or
connected may be used to support the rails.

page_text: Improvements in Elevated or Girder Railways or Tramways.
We, GERALD BARKER of 1 Victoria Street, Westminster, in the County of London,
Civil Engineer, and BARNABAS JAMES THOMAS, and JOSEPH JEX TAYLOR, of the same
place, Civil Engineers, 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 objects of this invention are:
First. To provide a girder or girders of comparatively light construction which shall
be capable of withstanding strains of all kinds, particularly torsional strains, more
effectively than has been the case hitherto.
Second. To provide means whereby triangular or approximately triangular girders
with the apex upwards may be adapted to carry two lines of railway.
Under the first part. We brace two side girders of any usual construction together
at or near the top by plate lattice or other bracing or flooring so that a horizontal
girder or its equivalent is formed, and we incline the two side girders so that the
lower booms approach close together, or such lower booms may be formed as one.
The carrying rails are supported on such bracing or flooring at or near the tops of the
side girders or otherwise as convenient. The whole forms a girder triangular or
approximately triangular in cross section of great strength particularly for resisting
tension such as is caused for instance by a greater weight being brought on one rail
than on the other. Two or more triangular or approximately triangular girders as
above may be combined together for carrying two or more lines of railway, and in
this case we may suitably connect or brace the several girders together. The
triangular or approximately triangular girders are carried on supports in any usual or
convenient manner, and it is advantageous that such girders be supported at or near
the extremities of their horizontal bracing.
Under the Seeond Part. We combine with a triangular or approximately triangular
girder longitudinal side girders inclining outwards, and we connect such longitudinal
side girders with the triangular or approximately triangular girder by suitable ties or
bracing. The rails are supported on such ties or otherwise as convenient. Instead of
longitudinal side girders, struts and ties forming brackets suitably braced or connected
may be used to support the rails.
DESCRIPTION OF THE DRAWINGS.
In all the views like letters indicate equivalent parts.
Fig. 1 is a transverse sectional view illustrative of the first part of our invention.
a. a are two side girders of any convenient construction. The top booms b of the
said girders are connected together by bracing c of plate, lattice or other design. The
girders approach close together at the bottom and are connected together by the boom d
which is common to both. Instead of a cominon boom each side girder may have
a separate lower boom the separate booms being connected together by ties or other
suitable connections. The whole forins a triangular shaped girder apex downwards having
very great torsional resistance. The carrying rails e are supported near the top of the
girders on transverse sleepers f. The said rails may however be carried on
longitudinal sleepers or may rest directly on the bracing c. g are guard baulks.
Fig. 2 is a transverse sectional view of a modification under our invention. In this
case the carrying rails e rest directly on the bracing or flooring c which may be of plate,
trough, arch, or other convenient construction as desired. Sleepers may be interposed
between the rails and flooring if required. The top booms 6 are showed formed or
provided with flanges g which act as guard baulks.
In all the views like letters indicate equivalent parts.
Fig. 1 is a transverse sectional view illustrative of the first part of our invention.
a. a are two side girders of any convenient construction. The top booms b of the
said girders are connected together by bracing c of plate, lattice or other design. The
girders approach close together at the bottom and are connected together by the boom d
which is common to both. Instead of a cominon boom each side girder may have
a separate lower boom the separate booms being connected together by ties or other
suitable connections. The whole forins a triangular shaped girder apex downwards having
very great torsional resistance. The carrying rails e are supported near the top of the
girders on transverse sleepers f. The said rails may however be carried on
longitudinal sleepers or may rest directly on the bracing c. g are guard baulks.
Fig. 2 is a transverse sectional view of a modification under our invention. In this
case the carrying rails e rest directly on the bracing or flooring c which may be of plate,
trough, arch, or other convenient construction as desired. Sleepers may be interposed
between the rails and flooring if required. The top booms b are showed formed or
provided with flanges g which act as guard baulks.

page_text: Here the carrying rails e rest directly on or
Fig. 3 is a further modification.
within the top booms b of the girders a.
Fig. 4 is a view shewing two triangular shaped girders placed side by side for
carrying two lines of railway. In this case the inner top booms may be connected
together by ties or bracing h. They may however if found more convenient be left
free.
Fig. 5 is a transverse sectional view illustrative of the second part of our invention.
a is a triangular shaped girder apex upwards. a a are side girders inclining
outwards connected at the bottom to the lower booms d of the girder a¹. Such lower
booms d also form the lower booms of the girders a. The top booms 6 of the side
girders a are connected to the girder a' by ties, bracing or flooring c of any desired
construction. The carrying rails are supported on the said ties, bracing or flooring
as shown or on sleepers resting thereon as found convenient.
Fig. 6 shows a modification under the second part of our invention. a' is the
triangular shaped girder. a are struts either singly, in couples, or in series, connected
at their lower ends to the booms d and forming, with the ties, bracing or flooring c
connected thereto and to the girder a¹ as shown, brackets upon which the two lines of
railway e are supported. This arrangement allows of the girder a¹ being made of
considerable depth so as to be available for large spans and by reason of the triangular
shape such girder is enabled to withstand the torsional strain caused by one line of
railway having a load thereon whilst the other line is unloaded. Instead of struts a
longitudinal side girders as described under Fig. 5 but of less depth than the main
girder may be used.
Girders as above described are preferably carried on supports which meet such
girders at or about the points i near the extremities of the horizontal bracing.
We do not confine ourselves to the particular arrangements of parts or sections of
material forming the girder as it is obvious that numerous modifications of forms and
sections for building up the bracing or flooring and booms may be made without
departing from our invention nor do we confine ourselves to the arrangements shown
for supporting the rails as these may be varied as desired.
Having now particularly described and ascertained the nature of our said invention
and in what manner the saine is to be performed, we declare that what we
claim is :-
First. The combination and arrangement of girders and bracing or flooring
substantially as and for the purposes set forth.
Second. The combination of two side girders joined or braced together at the
bottom and connected by bracing or flooring at or near the top substantially as and
for the purposes set forth.
Third. The combination of two or more sets of girders as herein before de scribed for
carrying two or more lines of railway.
Fourth. The combination with a triangular shaped girder with apex upwards of side
girders or struts, and ties bracing or flooring substantially aз and for the purposes set
forth.
This Tante eccond day of July 1897
W. B. JOHNSON,
4 Clayton Square, Liverpool, Agent.