Improvements in the Manufacture of Parquetry or Inlaid Wood Work.
Year: 1891

page_text: Date of Application, 6th Oct., 1891-Accepted, 21st Nov., 1891
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Parquetry or Inlaid Wood
Work.
I HEINRICH STUDTE Junior of Kruk near Inowrazlaw in the Province of
Posna, Kingdom of Prussia, Empire of Germany, Farmer, do hereby declare the
nature of this invention and in what manner the same is to be performed, to be par-
ticularly described and ascertained in and by the following statement :-
My invention for improvements in the manufacture of parquetry in wood relates
to a method of manufacturing massive parquetry especially of cross grain wood.
Hitherto parquetry has been manufactured by cutting out pieces of wood of
different colours and fitting the same together or by burning patterns into the
wood the material employed generally being wood cut plankways.
It is but recently that parquetry of cross-grained-wood has been obtained the
method being described in German Patent No. 55859.
By this method however, parquetry can only be manufactured as veneer also in
all other methods hitherto known the results obtained are far from satisfactory,
the joint of the plate and the veneer being imperfect, and the labour of fitting
together the parts, very toilsome and tedious therefore costly. All these draw-
backs are completely overcome by my said improved method.
My invention will be readily understood by reference to the accompanying sheet
of drawings in which,
Fig. 1 is a perspective view of a plate or slab for forming parquetry woodwork.
Fig.
2 a perspective view of block of plates or slabs.
Fig. 3 elevation showing line of partition of cavities and elevations of pattern.
Fig. 4 elevation of punches.
Like letters of reference denote similar parts throughout the several views.
Plates or slabs of wood a (Fig. 1) the grain of which run in the direction shown
by arrows at a 6' are well planed on their face sides so that if the same be put
together face to face as shown at Fig. 2, they fit perfectly close to one another.
The plates a being first coated with glue or cement on the adjoining surfaces, are
heated and subjected to hydraulic pressure whereby compact blocks having the
aspect shown in Fig. 2. are obtained. Any number of plates may be thus glued or
cemented together.
Blocks made in this manner and consisting of many pieces are then cut perpen-
dicular to the direction of the grain into plates of any desired thickness thereby
showing the cross-grain of the wood on their upper and lower sides.
In order to manufacture parquetry I employ two of these plates of wood of
different colours, as for example the first may be of maple and the second of
nutwood. Patterns are pressed into the plates by means of punches of special
design each of the two plates being worked by a different punch. These punches
are shown at Fig. 4 one is the matrice m and the other the punch p. The cavities
of the one exactly corresponding to the elevations of the other. The matrice m
is pressed with a heavy pressure upon the plate of maple, whereby the elevations
of the matrice m mould the said plate according to their shape. In a similar way
press the punch p upon the plate of nutwood thereby the cavities of the first
plate of wood correspond exactly to the elevations of the second.
I
If now the pressed faces of the plates be put together the patterns must
exactly and completely fit into each other; the plates then receive a coating of
glue or cement on these faces and are joined together by heating and hydraulic
pressure.
When dry the block thus formed of two sorts of wood is cut across on line nn
of Tio 3 the cut passing through middle of the cavities and elevations of the

page_text: pattern. In this manner I obtain two massive plates of parquetry showing on the
cross-grain side of one a light pattern on a dark ground and the other a dark
pattern on a light ground.
The enchased pieces of the pattern being of a certain thickness and fitting
exactly into one another (besides being pressed in by hydraulic pressure) prevents
thereby any possibility of getting loose. The plate is nowhere pinked through
and can be made of any desired thickness.
By this my said improved method it is possible to produce the most varied patterns
the different blocks being composed of wood of several colours.
The finished plate may be subjected to pressure in order to produce ornaments
thereon whereby the surface first smooth becomes embossed.
It will be readily understood that the same results may be obtained by my
said improved method with wood cut plankways.
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. The method of manufacturing parquetry or inlaid woodwork consisting of
impressing into one of two plates of wood of different colours a pattern by means
of a punch and into the other by means of a matrice and of gluing or cementing
together the figured surfaces thus obtained and dividing the block by a cut through
the parts of the pattern fitting into each other into two massive plates of parquetry,
the pattern of the first being light on dark ground and that of the second dark on
light ground, as hereinbefore described.
Dated this 28th dan of Contambor 1901

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