Improvements in and relating to Fire-proof Ceilings.
Year: 1898

page_text: Date of Application, 3rd Feb., 1898
Complete Specification Left, 3rd Nov., 1898-Accepted, 17th Dec., 1898
[Communicated from abroad by FERDINAND COHN, of 45, Neuerwall, in the City
of Hamburg, Germany, Merchant, and HEINRICH GEORG BENDIX BRUNCK-
HORST, of 8, Augusta Strasse, in the City of Hamburg,, Germany, Architect.]
Improvements in and relating to Fire-proof Ceilings.
I, HENRY HARINGTON LEIGH, Assoc. M. Inst. C.E., Fel. Ch. Inst. P.A., F.I. Inst.,
practising as Phillips and Leigh, of No. 22, Southampton Buildings, Chancery
Lane, in the Administrative County of London, Engineer and Patent Agent, do
hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in fire-proof ceilings and the produc-
tion of fire-proof plates or tiles used therefor.
The plates or tiles of fire-proof material are joined to one another by groove
and tongue, are stepped at their ends and designed to be supported between the
beams or girders of a building which are for this purpose provided with lateral
projections to engage with the corresponding steps or recesses of the said plates
or tiles. The plates or tiles are to be so arranged between the beams or girders
that the under face somewhat projects beneath the under faces of the beams or
girders so that under each girder or beam, a free space is left between the opposite
facing ends of the fire-proof plates, or tiles, which is afterwards closed by net-
work or gratings and filled out with mortar or other fire-proof material.
For the production of the aforesaid fire-proof plates or tiles a moulding box
is employed which consists of end and side walls, preferably made of angle-iron
and locked together by means of suitable wedges or keys.
Between the two lateral walls of the moulding box or frame, a sliding trans-
verse wall is provided which by means of suitable rack-and-pinion gear may be
moved to and fro in order to admit of the moulding of plates or tiles of varying
length. The interior faces of the walls of the moulding box thus produced are
properly shaped corresponding to the shape of the edges of the plates or tiles
required, for the purpose set forth.
Dated the 3rd day of February 1898.
Improvements in and relating to Fire-proof Ceilings.
I, HENRY HARINGTON LEIGH, Assoc. M. Inst. C.E., Fel. Ch. Inst. P.A., F.I. Inst.,
0 practising as Phillips and Leigh, of No. 22, Southampton Buildings, Chancery
Lane, in the Administrative County of London, Engineer and Patent Agent, do
[Price 8d.]

page_text: 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 refers to improvements in and relating to fire-proof ceilings.
In order that my invention niay be more fully understood I will now proceed
to describe the same in detail and for that purpose shall refer to the accompanying
sheet of drawings.
The plates or tiles h of fire-proof material are joined to one another by groove-
and-tongue, and are stepped at their ends and supported between the beams
or joists G or girders G of a building which are for this purpose provided with
lateral projections or k to engage with the corresponding steps or recesses of
the said plates or tiles. The plates or tiles are to be so arranged between the
joists or girders that the under-face somewhat projects beneath the under faces
of the said joists or girders so that under each of them a free space is left between
the opposite facing-ends of the fire-proof plates or tiles, which is afterwards
closed by net-work or gratings n, and filled out with mortar or other fire-proof
material.
For the production of the aforesaid fire-proof plates or tiles a moulding box
or frame is or may be employed, which consists of end and side walls aa and bb
respectively, preferably made of angle-iron and locked together by means of
suitable wedge or key devices cc¹.
Between the two lateral walls aa of the moulding box or frame, a sliding
transverse wall e is provided which by means of suitable rack-and-pinion gear fg,
may be moved to and fro in order to admit of the moulding of plates or tiles of
various lengths. The interior faces of the walls of the moulding box thus pro-
duced are properly shaped corresponding to the shape of the edges of the plates
or tiles required, for the purpose set forth.
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: -
1. A fire-proof ceiling consisting of fire-proof plates or tiles interlocking with
one another by groove-and-tongue and supported between the joists or girders
of a building so as to project somewhat under the faces of the said joists or
girders, and to leave under the latter and between them a free space which is
closed by fire-proof net-work or gratings and filled out with mortar or like fire-
proof material, substantially as and for the purpose set forth.
2. The production of fire-proof plates or tiles for fire-proof ceilings by means
of a moulding box or frame which consists of end and side walls suitably con-
nected with one another, and shaped on their interior faces corresponding to the
shape of the edges of the plates or tiles required, substantially as and for the
purpose described.
3. The improved plate or tile moulding-box or frame constructed, arranged
and operated, substantially as hereinbefore described with reference to and shewn
in the drawing annexed.
Doted the 2nd day of V1000
HENRY H. LEIGH,
No. 22, Southampton Buildings, Chancery Lane, London, W.C.