Year: 1887

page_text: I, ARTHUR WILLIAM RAMMAGE of 42 Old Broad Street in the City of London
and County of Middlesex, 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 that class of flooring or decking commonly used in bridge-
work, culverts, landing stages, piers and subways etc. but which may also be used
for buildings such as warehouses or other structures where it is necessary that the
floors should be both fireproof and capable of bearing great weight and strain,
especially where it is found inconvenient to support the said flooring at close intervals.
A further feature of my said invention is, that it can be constructed of any dimensions
to suit the structure in which the said flooring is employed and can be made capable
of bearing a greater strain per given area at a smaller cost than those Hoors
commonly in use.
My invention may be described as follows, reference being had to the accompanying
drawings, forming a part of this specification and the figures and letters of reference
marked thereon, similar letters indicating like parts throughout.
Fig. 1, is a sectional elevation of my said invention. Figs. 2 and 3 are sectional
views of alternative forms of my invention. Fig. 4 is a sectional view of my invention
shewing how it may be applied to structures of large dimensions. Fig. 5, is a further
alternative form of any said invention.

page_text: I prefer to construct my improved flooring or decking of quarter cylindrical rolled
steel or rolled iron plates A, which are rolled with flanges a a' and which flanges are
securely rivetted or bolted together in order to form a continuous span as shewn more
clearly by reference to Fig 1.
Should it be desired to construct my improved flooring or decking of smaller
dimensions, I may roll the several plates B forming the floor, in the shape shewn in
Fig. 2, so that when the flanges are rivetted or bolted together a continuous span
of Hooring or decking is formed.
I may however, when preferred roll the plates C (Fig. 3) in half circles with
flanges which may be rivetted together as shewn to form a continuous span of
flooring.
When it is found necessary to construct my said flooring or decking of very large
dimensions I prefer to roll the several segment plates D (Fig. 4) with flanges d, d,
and after the flanges & have been rivetted or bolted together, to rivet or bolt the
half circles (thus formed) together as shewn at d', thus forming a continuous span of
flooring.
In order to further strengthen the said flooring 1 may rivet steel T's D' (or in the
case of an iron flooring or decking, T irons,) at intervals along the inside of the
decking, as shewn in Fig. 4. may however strengthen the said flooring by intro-
ducing tie-rods d in the manner shewn, but it will not be found necessary to employ
either the steel T's (or T irons) or the tie-rods, unless the flooring or decking is
designed to carry exceptional strains.
When desired, I may construct my improved flooring or decking in the form
shewn in Fig. 5, with flanges e, e', and which flanges et are bent over in the manner
shewn and form flanges e.
It will be evident that I may roll the several plates to any convenient length and
of any suitable thickness, and furthermore it will be evident that the several plates
when rivetted together may be placed either at right angles, or parallel to the girders
which support the said floor or decking.
After having rivetted the several rolled plates together and formed a complete floor
or decking, I fill in the said floor with concrete F, or other suitable substance as shewn,
thus completing a strong and fireproof flooring or decking.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is :-
1st). In a fire proof flooring or decking, the said flooring or decking constructed
of rolled steel or rolled iron plates A, rolled with flanges a a¹ and said flanges a a',
rivetted together, substantially as and for the purposes hereinbefore described and
illustrated in the drawings hereunto annexed.
2nd). In a fireproof flooring or decking the said flooring or decking constructed of
rolled steel or rolled iron plates B, said plates B rolled with flanges, and said
flanges rivetted together, all substantially as, and for the purposes herein before
described and illustrated in the drawings hereunto annexed.
3rd). In a fireproof flooring or decking, said flooring or decking constructed of
rolled steel or rolled iron plates C, said plates rolled with flanges c and said flanges c
rivetted together, substantially as and for the purposes hereinbefore described and
illustrated in the drawings hereunto annexed.
4th). In a fireproof flooring or decking, said flooring or decking constructed
of rolled steel or rolled iron segment plates D, said segment plates rolled with
flanges dd, said flanges dd rivetted together, the said flooring or decking stayed
and strengthened with steel T's or Tirons and tie-rods, all substantially as and
for the purposes hereinbefore described and illustrated in the drawings hereunto
annexed.
5). In a fireproof flooring or decking, said flooring or decking constructed of
rolled steel or rolled iron plates E, said plates rolled with flanges e e¹, and said flanges e¹

page_text: bent over to form the flanges e, and said flanges e e' rivetted together all substantially
as and for the purposes hereinbefore described and illustrated in the drawings hereunto
annexed.
6). The construction and general arrangement of my said improved flooring or
decking, and said flooring or decking filled in with concrete or other suitable
substance, all substantially as, and for the purposes hereinbefore described, set forth
in the claim, and illustrated in the drawings hereunto annexed.
1
Cat 1007
HORN & SON,
Agents for Applicant.