Improvements in or relating to Fireproof Floors, Ceilings, or Similar surfaces.
Year: 1898

page_text: Date of Application, 17th Oct., 1898-Accepted, 23rd Dec., 1898
COMELDIM
SPECIFICATION.
Improvements in or relating to Fireproof Floors, Ceilings, or
Similar surfaces.
We, PAUL VANHAUTEN and LEONARD PLUMEN, Architects, both of 91, A lalbert
Strasse, Aix-la-Chapelle, and MATHIAS NOPPENEY, of 5, Oramienstrasse, Aix-la-
Chapelle, Germany, Building Contractor, 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 :-
This invention relates to the construction of a ceiling floor or similar surface
which whilst being fire and sound proof is at the same time very light.
In the accompanying drawing
Fig. 1 is a cross section and Fig. 2 a perspective view of a portion of a ceiling with
wooden joists, according to this invention.
Fig. 3 is a cross section of a ceiling with iron joists while
Figs. 4 and 5 are perspective views of parts of a modified construction of the
improved fireproof surfaces.
The ceiling consists of tile-shaped plates B of suitable material (concrete, gypsum
or the like) placed between the joists A and made hollow or provided with several
hollows x (Fig. 1) of any desired cross-section.
The portion b of the plates B forming the lower surface of the ceiling is flat, the
upper portion 6 being arched (Figs. 1, 2 and 3) or sloping from the centre
towards the ends (Figs. 4 and 5) for the purpose of increasing the strength of the
plates. When wooden joists are used (Figs. 1, 2 and 5) the plates B engage by
means of their edges or projections d with bars e arranged on the longitudinal
sides of the joists and by means of under edges f with the lower surface of the
joist. The edges d are secured to the joists.
After having placed the plates or tiles in position, the open spaces between them
and the joist are filled with suitable binding material or cement.
In order to enable the plates to be introduced directly from below in between
the joists, the lower portion of the edge d is removed by making a longitudinal
groovey (Fig. 1 right hand end) with which the binding material applied between
the joist and the tile engages and becomes attached.
When iron girders are used as joists (Figs. 3 and 4), the plates rest with their
edges g on the lower flange of the girders. The plates are provided laterally with
flat iron barsh with open spaces for the purpose of affording a good hold to the
plaster which is applied over them.
The iron bars h can be pushed into the plate on one side so far that they can be
afterwards partially pulled out and pushed into the plate or tile of the adjoining
compartment on the other side of the joist, so that these adjoining plates are
connected together.
The plates B are provided on their end surfaces on one side with a groove i and
on the other with a corresponding projection adapted to engage with the groove i
of the adjoining plate.
The upper surface of the plate B is provided with a series of longitudinal grooves k
in order to take up any water that may have penetrated through the floor above and

page_text: to prevent it from reaching the lower surface of the ceiling which may be painted
or otherwise decorated and would thus be easily damaged.
The ceiling or surface according to this invention is fireproof even when wooden
beams or joists are used as they are sufficiently protected, by the edges of the plates
and by the plaster filling the intervals, to prevent further spreading of a fire
originating below.
The hollow spaces of the tiles or plates considerably reduce the weight of the
plates and also reduce the transmission of sound through the plates.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
1. A ceiling floor or similar surface consisting of hollow tile-shaped plates, or
provided with several hollow spaces of any cross-section, placed between the joists,
the upper surfaces of said plates being arched or sloping downwards from the centre
towards the sides and the lower surface b flat, the upper surface being, preferably
provided with longitudinal grooves.
2. Ceiling or similar tiles or plates substantially as described or illustrated in
Figs. 1 and 2, or in Fig. 3, or in Fig. 4, or in Fig. 5 of the accompanying
drawings.
ויב
171
ד
1000