s
Year: 1887

page_text: Date of Application, 2nd June, 1887.
Specification Accepted, 22nd July, 1887.
I, WILHELM BOELLING, manufacturer, of Frankfurter Allee 118, Berlin, in the
Kingdom of Prussia and German Empire, do hereby declare the nature of the said
invention and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement :-
On the accompanying Drawings:-
Fig. I. represents an upper view. of two plates laid together, and shows the way in
which they are connected.
Fig. II. is a cross section through Fig. I.
Fig. III. shows the separate flooring-plates laid one beside the other and filled out
with pitch or asphalte.
The improvements consist in connecting the upper plate, A, which is made of some
kind of fine wood, by means of cross-battens, c, with the under plate, B, and in filling
up the intermediate space, H, with pitch, asphalte or any other suitable material.
The upper plates, A, are constructed for this purpose of the dimensions desired, and
all their edges are bevelled. The cross-battens, c, are then glued on to the under side
of the plate perpendicularly to the direction of the fibre (to the grain). They project
a little on one side of the edge so as to serve as rests, and on each two adjoining
plates they are displaced by the breadth of the latter. The under plate, B, which is
made of common wood, and of a size corresponding with that of the upper plate, is
then glued on to the cross-battens, c.
The plates thus formed and consisting in the upper plates, A, under plates, B, and
cross-battens, c, are then put into a suitable press (in any desirable number) to prevent
their warping, and the space left between the upper plate, A, and the under plate, B, is
filled up with pitch, asphalte etc.
The plates are left in the press till quite cool, to hinder their being warped by the
heat and to make them remain quite straight. Suitable spaces must be left in the
asphalte layer for the projecting ends of the cross-battens; pieces are inserted for this
purpose. In addition to this the pieces, F, which are made of a corresponding
thickness with the under plate, B, are placed on the projecting ends of the cross-
battens, c, to fill up the cut out parts of the under plate, B.

page_text: The edges of the plates are bevelled, so that each two of the plates overlap each
other with their edges and the succeeding plate is kept down in its place by the
preceding one.
The plates are laid in the following way. The plate is laid on to the projecting ends
of the cross-battens, c, and nailed to the bases, and the slanting edges are fitted in
under the edges of the preceding plates. In this manner the plates are fastened
securely and neither heads of nails or screws are to be seen.
On the plates fitting together in this way, the cross-battens with projecting ends
are displaced against each other. The flooring-plates made in this way are dis-
tinguished by their elasticity, by the cheapness and convenience of their make and by
the easiness, with which they can be removed and fastened.
By colouring and staining the upper plates in different ways and by making them
and fitting them together in different sizes, various patterns for flooring can be made
and even wood mosaic flooring can be formed in this way.
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 flooring-plate formed by an upper plate, A, and an under plate, B, which ai
kept apart by the cross-battens, c, and in which the space left between the two plates
is filled up with a layer, H, of pitch, asphalte or other suitable material, substantially
as hereinbefore described.
2. Flooring-plates consisting in an upper plate, A, and an under plate, B, the
intermediate space of which is filled up by the cross-battens, c, and by the pitch or
asphalte layer, H, and provided with slanting edges so as to make them fit under and
overlap each other, substantially as hereinbefore described.
3. A flooring-plate consisting in the upper and under plates, A, and, B, the
intermediate space of which filled up by the cross-battens, c, and the pitch or
asphalte layer, H, and provided with cross-battens the ends of which project over the
edges of the plate; substantially as hereinbefore described.
4. Flooring-plates consisting in the upper and under plates, A, and, B, the
intermediate space of which is filled up by the cross-battens, c, and the pitch or
asphalte layer, H, and provided with cross-battens the ends of which project over the
edges and are displaced in the plates fitting into each other; substantially as herein-
before described.
Dated this 2nd day of Juns 1007
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C.,
Agents for the Applicant.