Improved Joint for Blocks or Boards for Flooring and other Purposes.
Year: 1893

page_text: Date of Application, 23rd Mar., 1893
Complete Specification Left, 18th Dec., 1893-Accepted, 20th Jan., 1894
PROVISIONAL SPECIFICATION.
Improved Joint for Blocks or Boards for Flooring and
other Purposes.
WILLIAM JOHN DAVIDSON Le Roy House Earlsmead Road South Tottenham
Cabinet Maker do hereby declare the nature of this invention to be as follows:-
The object of this invention is to provide blocks or boards with a joint which
enables the same to be rapidly and securely laid or fixed, also to be taken apart
without injury to the work and used again; further, the blocks or boards being
reversible, either side is available for the face surface and both sides in respect to
partition work.
To better explain my invention, I append drawings by which the arrangement
of the joint may be readily seen.
Fig. 1 is to show how the ends of block A engage with the sides of blocks
& C (the blocks B & C are shown end view).
Fig. II gives the details of the joint as follows:-Upon both edges of each
board or block two projections d & e are worked which will be found to correspond
exactly with the projections f & g reversed, thus enabling the boards or blocks to
be used either side up; in working the said projections the groove / and the
rabbet i are formed, into which the projections & & e fit.
Fig. III shows how the blocks or boards come together and it will be seen that
a space is left between the inclined surfaces ; & to assure the abutments 1 & m
coming together perfectly; the abutments & m are made at an angle of say 80°
the better to enable the blocks or boards to be nailed or screwed without injury to
the joint at d.
I also claim that in the event of shrinkage occurring from any cause, the
projections d&e (as shown in Fig. II.) effectively prevent the unfixed edge of
the adjoining board or block becoming loose or lifting.
D & E represent two of the many patterns of floors which can be made upon
this principle.
.
1000
COMPLETE SPECIFICATION.
Improved Joint for Blocks or Boards for Flooring and
other Purposes.
WILLIAM JOHN DAVIDSON Le Roy House Earlsmead Road South Tottenham
Cabinet Maker 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 :-
The object of this invention is to provide blocks or boards with a joint which
enables the same to be rapidly and securely laid or fixed, also to be taken apart
without injury to the work and used again, further, the blocks or boards being
reversible, either side is available for the face surface and both sides in respect to
partition work.
In order to enable my invention to be fully understood, I describe the same by
reference to the drawings left with my Provisional Specification.

page_text: Fig. I is to show how the ends of the block A engage with the side edges of
the blocks B & C (the blocks B & C are shewn in cross section).
Fig. I gives the details of the joint as follows:-Upon both edges of each
board or block two projections d & e are worked which will be found to correspond
exactly with the projections f & g reversed, thus enabling the boards or blocks to
be used either side up. In working the said projections a groove. and a
rabbet i are formed into which the projections d & e fit.
Fig. III shews how the blocks or boards come together and it will be seen that
a space is left between the inclined surfaces i & k to assure the abutments 1 & m
coming together perfectly; the abutments 7 & m are made at an angle of say 80°
the better to enable the blocks or boards to be nailed or screwed without injury
to the joint at d.
I also claim that in the event of shrinkage occurring from any cause, the
projections d & e as shewn in Fig. II effectually prevent the unfixed edge or end
of the adjoining board or block becoming loose or lifting.
D & E represent two of the many patterns of block floors which can be made
upon this principle and such blocks require no fastening whatever as the nature of
the joint is self fixing.
To extend the description of the advantages of my invention, I now append
further drawings. Sheet II Figs. 1. II. III. & IV. show the joint adapted to
matched boarding for partitioning beaded & V jointed, double beaded, single
beaded & flush, V jointed & flush. Figs. V. VI. & VII are examples of decorative
matched boards for walls or ceilings.
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
I. To provide improved interlocking and reversible joints for boards or blocks
as herein before described.
II. To provide a joint for block flooring which can be laid without any fixing
and is not affected by shrinkage.
Dated this Eighteenth day of December 1893.
W. J. DAVIDSON.