Improvements in and relating to the Production of Slabs.or such like for Building and other Purposes.
Year: 1896

page_text: Date of Application, 6th Nov., 1896-Accepted, 19th Dec., 1896
COMPLETE SPECIFICATION.
Improvements in and relating to the Production of Slabs.or such
like for Building and other Purposes.
I, AUGUST GRIES of 69, Kaiserstrasse, Bielefeld in the Empire of Germany,
Builder 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 certain improvements whereby by the use of templates
having peculiar sections on their inner edges, slabs, plates or bricks and such like
of cement, gypsum or artificial stone or other material are produced which by the
use of the templates receive edges of such a.kind, that the slabs when placed or
pushed together can receive between one another materials to form joints, such
placing or pushing together leaving a middle space, which is to be filled up with a
hardening filling & thus form the joint.
In this process the slabs receive such sections that they form water-proof
floorings for cellars, malt floors or the like, which floorings hitherto have been
made with asphalt, stone or cement; these improvements may also be used for
pavements. A special section of the slab edges is especially convenient for
partitions.
It may be mentioned that the plates need not be produced in frames the floorings
can be produced in natural stone; but the most convenient and practical will
however be slabs moulded in frames.
In the annexed drawings
Fig. 1 shows such a flooring in perspective view in cross section.
Fig. 2 is a plan view.
Figs. 3-5 show a partition.
Figs. 6 and 7 show a pavement in cross section and plan view.
Figs. 8-10 show different joints in cross section.
The longitudinal or square slabs A, Fig. 1 have a border which runs round and
is so sectioned that two plates placed together touch on the lower part, but leave
thereover a joint space between one another, which can be filled or closed. The
joints may have any one of the cross sections represented in the different figures
the divisions which remain between the upper parts of the plates, Fig. 2 are filled
up with cement, asphalte or by any other hardening filling means, so that the
plates form finally a completely equal plane. As the filling material according to
the profiles of the Figs. 1, 3, 4, 8,-10 reaches under the upper edges of the
grooves it forms a kind of dovetail and the slabs are connected to one another by
a solid undetachable body. If the plates are tarred or asphalted upon the under
side and the under edges, they form an absolutely water-proof covering. In order
to augment still this impermeability the under edges can also be tightened by
means of grooves and rib as shown in Fig. 8. In Fig. 10 the joints have also a
groove; if the ground is covered with cement, mortar or asphalt and the plates
are placed upon it, the grooves are pressed into the said materials so that the
grooves augment considerably the tight closing.
These improvements can also be used for slabs standing angularly together in
order to form receptacles etc. also for producing street pavement, whereby the
block like stones would have a cross section as shown in Fig. 6; the upper joints

page_text: receiving thereby vertical parallel side walls to allow of opening the pavement
without injuring it when repairs are to be made which would not be possible with
joints reaching under one another; also inlaid floors could be produced after this
method, whereby any design might be obtained by means of various coloured
stones with filling means for the joints.
These floorings are especially advantageous for placing limestone plates upon
malt floors and in all industrial establishments where water proof floorings are
required, as in breweries, tanneries etc.
Referring to partitions, Figs. 3 and 4 show how the plates are placed together
and Fig. 5 shows the wall formed by such plates. Both cross sections have joints d
open on the outside and increasing inside on each wall side which joints are
separated by the middle projection d; in Fig. 3 this middle projection is also
secured against lateral movement by means of groove and rib d². The joints d are
filled with cement or gypsum, whereupon the wall forms an entirely connected
whole.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what!
claim is :-
The improvements for producing buildings, floorings, partitions receptacles and
pavements, by means of slabs, blocks, plates or bricks of natural or artificial stone
or other convenient material provided with step like cut or moulded edges in such
manner that open joints are formed between said slabs, blocks, plates or bricks to
be filled in with plastic material which hardens when set and so keys the slabs etc.
to each other.
Dated this 6th day of November 1896
HERBERT HADDAN & Co.,
18 Buckingham Street, Strand, London, W.C.,
Agents to Applicant.