Year: 1888

page_text: Date of Application, 13th Apr., 1888
Complete Specification Left, 9th Jan.. 1889
Complete Specification Accepted, 2nd Mar., 1889
I, CARL WITTKOWSKY of Charlottenburg near Berlin, Germany, Manufacturer, do
do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in the manufacture of mosaic work of which
the following is a specification:
The method used till now for the manufacture of inlaid-work was both tedious and
troublesome and was as follows: Two or more pieces of different coloured veneers
are placed one on the top of the other, and patterns cut out from them, after that
the patterns are changed, and the pieces of veneer are then separately pasted on
paper..
For example, if a dark coloured and a light coloured wood are cut out together, the
pattern cut out from the dark coloured wood is placed in the space from which the
pattern in the light coloured wood was cut and vice versa.
By this plan two different pieces of inlaid work are obtained, one with a dark
pattern on a light ground, and the other with a light pattern on
ground.
a dark
The pieces are then pasted and fixed on paper, in order to hold the patterns in place,
and again they are glued on the article to be veneered, with the paper outside; when
the glue is dry the paper is then washed off, and so leaves an inlaid pattern on the
article.
By my improved method I avoid the great loss of time that was necessary till now,
by cutting the pattern out of one piece of wood, and then placing it upon the article
to be decorated, and pressing the pattern into the article; by this pressing of the
pattern into the wood, between which glue or other adhesive substance is placed, an even
surface with an inlaid pattern on it is obtained.
The essential part of the improvement is, that I press one piece of wood, on which
the pattern is cut, into another plain piece, between which glue or other fastening
latenus is cleand

page_text: The process is as follows:
I coat the veneers, which serve for the marquetry patterns, with a glue which dries
at the ordinary temperature, and when the glue is dry, I place a number of these
veneer sheets together and hold them with clamps, and then cut the desired pattern out
with a scroll-saw or other means.
I take one of these cut pieces, for example out of walnut-wood, and lay it on a
ground of plain wood of any thickness, and then place the two pieces between two
warm plates in a powerful press.
.
By the heat the glue is softened, and the surface of the ground piece somewhat
'softened, and when they are pressed together, the wallnut sheet sinks into the softer
wood, and is firmly fastened therein; the operation is then ended and I have a piece
of wood with an inlaid or mosaic pattern in it.
The above described method has the following advantages over the old method.
In the first place the troublesome setting and changing of the cut patterns is
avoided, and I can use a thicker saw for cutting the patterns instead of the thin buhl
saw used in the older method, as I do not lay the positive and negative pieces in each
other, which must fit well; consequently I can place a number of pieces one on the
top of the other, and cut the pattern out of all at the same time.
It is clear that in this process the pattern agrees in exactness, with the old method,
as the pattern is pressed into the ground, and forms an even surface.
It follows for example, that I can take a finished panel of a door, and press the
desired patterns into it, and so finish the article in one operation, which was not
possible by the older method previously described method.
It is to be understood that the fixing of the pattern in the ground can be accom-
plished with cold as well as warm plates in the press, as for example, by coating the
cut pattern with wet glue, and then placing it on the ground, and pressing it into the
ground, or first letting the glue dry on the pattern and moistening the ground
sufficiently, so that the glue will be melted in the pressing together.
But these last two methods do not give such good results as the first.
It is clear that I can form the ground of any desired thickness, from one or any.
number of pieces.
A pattern can be pressed into the ground plate, either on one or on both sides at the
same operation.
It is not necessary that the patterns should be cut from wood, as they can also be
made from metal, ivory or other suitable substance, and the same is applied to the
ground; but the ground must possess a certain amount of elasticity to allow of the
pattern being pressed into it.
It is to be remarked that it is not necessary that the patterns should be cut by a fret
saw, as they can also be obtained by stamping or cutter rolls or by any other suitable
means.
Dated this 10th day of April 1888.
CARL WITTKOWSKY.
By A. Kuhnt & R. Deissler,
38, Alexander Str., Berlin C., Germany,
His Attorneys.

page_text: I, CARL WITTKOWSKY of Charlottenburg near Berlin, Germany, manufacturer 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
My invention relates to improvements in the manufacture of mosaic work of which
the following is a specification.
The method used till now for the manufacture of inlaid work was both tedious and
troublesome and was as follows:
Two or more pieces of different coloured veneers are placed one on the top of the
other and patterns cut out from them, after that the patterns are changed, and the
pieces of veneer are then separately pasted on paper.
For example, if a dark coloured and a light coloured wood are cut out together, the
pattern cut out from the dark coloured wood is placed in the space from which the
pattern in the light coloured wood was cut, and vice versa.
By this plan two different pieces of inlaid work are obtained, one with a dark
pattern on a light ground, and the other with a light pattern on a dark ground.
The pieces are then pasted and fixed on paper, in order to hold the patterns in place,
and again they are glued on the article to be veneered, with the paper outside; when
the glue is dry the paper is then washed off, and so leaves an inlaid pattern on the
article.
By my improved method I avoid the great loss of time that was necessary till now,
by cutting the pattern out of one piece of wood, and then placing it upon the article
to be decorated, and pressing the pattern into the article; by this pressing of the
pattern into the wood, between which glue or other adhesive substance is placed, an
even surface with an inlaid pattern on it is obtained.
The essential part of the improvement is, that I press one piece of wood, on which
the pattern is cut, into another plain piece, between which glue or other fastening
substance is placed.
The process is as follows:
I coat the veneers, which serve for the marquetry patterns, with a glue which dries
at the ordinary temperature, and when the glue is. dry, I place a number of these
veneer sheets together and hold them with clamps, and then cut the desired pattern
out with a scroll-saw or other means.
I take one of these cut pieces, for example out of wall nut-wood, and lay it on a
ground of plain wood of any thickness, and then place the two pieces between two
warm plates in a powerful press.
By the heat the glue is softened, and the surface of the ground piece somewhat
softened, and when they are pressed together, the wall-nut sheet, sinks into the softer
wood, and is firmly fastened therein; the operation is then ended and I have a piece
of wood with an inlaid or mosaic pattern in it.

page_text: The above described method has the following advantages over the old method.
In the first place the troublesome setting and changing of the cut patterns is avoided,
and I can use a thicker saw for cutting the patterns instead of the thin buhl saw used
in the older method as I do not lay the positive and negative pieces in each other,
which must fit well; consequently I can place a number of pieces one on the top of the
other, and cut the pattern out of all at the same time.
It is clear that in this process the pattern agrees in exactness with the old method,
as the pattern is pressed into the ground and forms an even surface.
It follows for example, that I can take a finished panel of a door, and press the
desired patterns into it, and so finish the article in one operation which was not possible
by the older previously described method.
It is to be understood, that the fixing of the pattern in the ground can be accom-
plished with cold as well as warm plates in the press, as for example, by coating the
cut pattern with wet glue, and then placing it on the ground, or first letting the
glue dry on the pattern and moistening the ground sufficiently, so that the glue will be
melted in the pressing together.
But these last two methods do not give such good results as the first.
It is clear that. I can form the ground of any desired thickness, from one or any
number of pieces.
A pattern can be pressed into the ground plate, either on one or on both sides at the
saine operation.
It is not necessary that the patterns should be cut from wood, as they can also be
made from metal, ivory or other suitable substance, and the same is applied to the
ground; but the ground must possess a certain amount of elasticity to allow of the
pattern being pressed into it.
It is to be remarked that it is not necessary, that the patterns should be cut by a
fret saw, as they can also be obtained by stamping or cutter rolls or by any other
suitable means.
Having now particularly described and ascertained the nature of my said Inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
1) In the manufacture of inlaid work, the method of combining a cut pattern with
a ground work or plate by pressing the said cut pattern into the ground by means of
a press with plain matrices, and fastening the pattern therein, forming thereby an even
surface with an inlaid pattern thereon.
2) As an article of manufacture a plate with mosaic or inlaid work therein,
consisting of a solid ground and a cut out pattern, the cut out pattern being pressed
into the solid ground plate and fastened therein by a cementing medium, the whole
forming an even surface, substantially as described.
Dated Berlin this 7th day of Januáry 1889.
By A. KUHNT & R. DEISSLER,
Alexander Strasse, Berlin C., Germany,
Agents for Applicant.