Year: 1887

page_text: Date of Application, 22nd Feb., 1887
Complete Left, 22nd Nov., 1887
Complete Accepted, 23rd Dec., 1887
Structures.
We, HARRY TURNER SHAW and CHARLES CHITTICк both of 141 and 143 Cannon
Street in the City of London, Engineers, do hereby declare the nature of this invention
to be as follows:
-
Floorings or deckings for railway and other bridges have before been formed of
corrugated structures of wrought iron or steel plate and various ways of forming such
corrugated floorings have been devised.
According to our invention we form the corrugated structure with flat surfaces at
the top and bottom of the corrugations and with vertical sides the top plate and the
bottom plate of each corrugation is made with short flanges at right angles to it on
one side of the plate along each of its side edges. The flanges of the bottom plates
stand upwards and the flanges of the top plates downwards. The vertical side plates
are each rivetted to a flange of a top plate and a flange of a bottom plate, they can be
cut to any width according to the depth of corrugated structure that is to be formed.
As will be seen the parts forming this flooring are of a kind which can readily be
obtained from large numbers of rolling mills without requiring any special outlay for
specially shaped rolls or dies which are required for the floorings or deckings now
commonly made-it will also be seen that all the parts can be put together by
hydraulic rivetters.
To strengthen corrugated floorings or deckings more especially floorings or
deckings over which heavy moveable loads are to be drawn we form along it one or
more longitudinal girders to distribute the load placed on any one of the corrugations
to adjoining corrugations. This we do by rivetting longitudinal angle bars of iron
or steel or bars of other suitable section to the top of the corrugations and to the
bottom and by filling in the hollows of the corrugations between these bars with
vertical plates rivetted up so as to form one continuous vertical rib.
The plate from which each filling piece is formed is near each of its sides bent at
right angles to form flanges to be rivetted to the vertical sides of the corrugations

page_text: and the top or the bottom of each filling piece is also similarly bent at right angles
and rivetted either to the top or to the bottom of the corrugation as the case may be.
When lines of railway rails are carried by the decking or flooring a distributing
girder of this kind may be placed centrally between each line of rails or may be
placed in other positions as may be desired.
CARPMAEL & Co.,
Agents for the Applicants.
We, HARRY TURNER SHAW, and CHARLES CHITTICK, both of 141 and 143 Cannon
Street, in the City of London, 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 :-
Floorings or deckings for railway and other bridges have before been formed of
corrugated structures of wrought iron or steel plate and various ways of forming such
corrugated floorings have been devised.
According to our invention we form the corrugated structure with flat surfaces at
the top and bottom of the corrugations and with vertical sides--the top plate and the
bottom plate of each corrugation is made with short flanges at right angles to it on
one side of the plate along each of its side edges. The flanges of the bottom plates
stand upwards and the flanges of the top plates downwards. The vertical side plates
are each rivetted to a flange of a top plate and a flange of a bottom plate, they can be
cut to any width according to the depth of corrugated structure that is to be formed.
As will be seen the parts forming this flooring are of a kind which can readily be
obtained from large numbers of rolling mills without requiring any special outlay for
specially shaped rolls or dies which are required for the floorings or deckings now
commonly made it will also be seen that all the parts can be put together by
hydraulic pneumatic and other power rivetters.
Figure 1 shows a transverse section of part of a corrugated flooring decking or
roofing built up in this manner. A and B are the flanged top and bottom plates
and C the vertical plates to which they are rivetted.
To strengthen corrugated floorings or deckings more especially floorings or deckings
over which heavy moveable loads are to be drawn we form along it when the
corrugations run the transvere way of the flooring one or more longitudinal girders

page_text: to distribute the load placed on any one of the corrugations to adjoining corrugations.
This we do by rivetting longitudinal bars of iron or steel or bars of other suitable
section to the top of the corrugations and to the bottom and by filling in the hollows
of the corrugations between these bars with vertical plates flanged or with L iron
connecting cleats rivetted up so as to form one continuous vertical web.
Where main girders are not used the flooring or decking is laid with its
corrugations the lengthway of the bridge and one or more distributing girders
depending upon the span
between the abutments are built into the flooring the
transverse way of the bridge.
In deep Warren trellis or other trussed main girder bridges where the cross girders
occur at wide intervals and at the points of intersections of lattices with the booms the
flooring or decking with distributing girders is laid in the same manner as in the last
paragraph.
When the corrugations run the longitudinal way of the flooring the distributing
girder is placed transversely, or it might be diagonally.
Figure 2 is a vertical section through part of a corrugated flooring decking or
roofing strengthened in the above manner. Figure 3 is a vertical section on the
line A B Figure 2.
The corrugated flooring itself which is shown in these figures is built up in the
manner shewn at Figure 1 but other similar corrugated floorings with vertical sides
to the corrugations may be strengthened in the same way as illustrated at
Figures 4, 5, 6, 7, 8, 9 and 10 and in like manner other corrugated floorings in
which the sides of the corrugations are sloping and the top and bottom flat may be
strengthened in the same way.
DE are two bars placed one below the other one above the flat tops of the
corrugations the other below the bottom-they are at right angles to the corrugations
and form the top and bottom plates of the strengthening girder F F are the plates
forming the vertical web of the girder. They are flanged at top and bottom as shewn
to allow of their being rivetted to the plates D and E or in place of their being flanged
cleats of angle iron might be used to connect them to the plates.
Similarly the plates are flanged or cleated at the sides and rivetted to
the sides of the corrugations and to one another. The plates are as shewn in the
drawings cut away at the corners at top and bottom alternately so that the flanges at
their sides may lie flat against the vertical plates forming the sides of the corrugations
except where the flanges of the top or bottom plates of the corrugations interfere with
their doing so but it is not essential that they should be so cut away. In this way
a complete continuous girder with top and bottom flange plates and intervening
vertical web is formed as is best seen in Figure 3.
Figure 11 is a vertical longitudinal section of part of a bridge with its flooring
formed with transverse corrugations and strengthened by a longitudinal girder formed
in the above manner. Figure 12 is a transverse section of the same. Опе
longitudinal strengthening girder only is shown but it might be strengthened with
two or more formed in the same way if desired.
Figure 13 is a vertical longitudinal section of a bridge floor with the corrugations
running longitudinally and strengthened by two transverse distributing girders.
Figure 14 is a transverse section of the same. Any desired number of such
transverse distributing girders may be used according to the length of the bridge.
Figure 15 shews the apparatus we by preference use for rivetting up the parts of
which the flooring decking or roofing is composed. It is arranged to rivet up two
rivets at a time on opposite sides of a corrugation without subjecting such sides to any
strain.
Two rivets are put in place on opposite sides of a corrugation with their heads
inwards they are then held in place by a small hydraulic cylinder and ram G placed
between them and to which water under pressure is admitted so as to make the end
of the ram abut against the head of one rivet and the end of the cylinder against the
other rivet.
The passage of water from the cylinder is then shut off by the closing of a suitable

page_text: valve. The rivetter H is then made to act upon the outwardly projecting ends of the
two rivets and to rivet them over. The rivetter may be worked by hydraulic or other
power-the drawings shew a hydraulic rivetter.
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 :-
1. A corrugated flooring decking or roofing with the corrugations flat on the top
and with vertical sides built up in the manner herein before described and illustrated
at Figure 1.
2. A corrugated flooring decking or roofing formed with a strengthening
distributing girder or girders each of such girders being formed with continuous top
and bottom flange plates secured to flat top and bottom of the corrugations and
intervening vertical web formed of plates fitting transversely across the hollows of
the corrugations and rivetted up so as to form one continuous web and also rivetted
to the top and bottom flange plates of girder.
3. The construction of corrugated floorings deckings or roofings substantially as
herein before described and illustrated in the drawings annexed.
Dated this 22nd day of November 1887.
HARRY T. SHAW.
CHAS. CHITTICK.