A NEW OR IMPROVED MANUFACTURE OF IMITATION INLAID WOODWORK
Year: 1876

page_text: LETTERS PATENT to Georg Alberty and Otto Alberty, both of Berlin, Prussia, for
the Invention of "A NEW OR IMPROVED MANUFACTURE OF IMITATION INLAID
WOODWORK."
PROVISIONAL SPECIFICATION left by the said Georg Alberty and Otto
Alberty at the Office of the Commissioners of Patents on the 20th May 1876.
GEORG ALBERTY and OTTO ALBERTY, both of Berlin, Prussia. "A NEW OR
IMPROVED MANUFACTURE OF IMITATION INLAID WOODWORK."
The object of this Invention is to imitate inlaid woodwork as applied to tables,
trays, and other objects, and to produce it cheaper and more durable than the
ordinary inlaid work.
The Invention mainly consists in printing upon veneer by means of a litho-
graphic stone, and subsequently to render the impression permanent. The veneer
employed is chestnut or other veneer. It is used in whole widths and somewhat
thicker than pasteboard (carton), and must be made smooth by means of sand and
pumice stone. The joints are pasted over with thin silk, as paper would not answer
for the further process.
The required Drawing is produced on the stone in lithographic ink, that is those
places where the wood is to colored are painted over with the said ink.
The
stone is then treated with vitriol and gum, whereby the drawing is fixed. The
color which is to be printed on the veneer is next put on to the stone in the
required imitation design by means of a leather roller, the wood is placed on it
and exposed to a pressure of about 13,000 pounds. The vencer thus far printed on
is then glued on to a strong plate or backing. After many vain attempts we have
at last succeeded in discovering a simple mode whereby this is made possible. We
have thus found that as for the glueing both pieces of wood must be well heated,
the heat causes the oil in the color to become fluid, and thus causes the drawing to
be blurred or run. To counteract this we employ polished zinc or other metal plates
which must be cold and which are put on the drawing. We thus not only prevent
the color from running but also prevent the glue from penetrating the thin wood.
The plate is then screwed together by the ordinary appliances or clamps used for
fixing veneer, and dried 4 or 5 hours. By putting on the polished metal plates the
vencer acquires a fine polish. The color is then fixed on by means of white Russian
lacquer, and the surface is then polished. In order to prevent the warping of the
wood the back of the thick plate may also be veneered..

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Georg Alberty and Otto Alberty in the Great Seal Patent Office on
the 20th November 1876.
GEORG ALBERTY and OTTO ALBERTY, both of Berlin, Prussia. "A NEW OR
IMPROVED MANUFACTURE OF IMITATION INLAID WOODWORK."
The object of this Invention is to imitate inlaid woodwork as applied to tables,
trays, and other objects, and to produce it cheaper and more durable than the
ordinary inlaid work, more especially as the latter is liable to be injured by pieces
of same springing off.
The Invention mainly consists in printing upon vencer by means of a lithographic
stone, and subsequently to render the impression permanent.
The vencer employed is chestnut or other vencer. It is used in whole widths
and somewhat thicker than pasteboard (carton), and must be made smooth by
means of sand and pumice stone. The joints are pasted over with thin silk, as paper
would not answer for the further process.
The required Drawing is produced on the stone in lithographic ink, that is those
places where the wood is to be colored arc painted over with the said ink. The
stone is then treated with vitriol and gun, whereby the drawing is fixed. The
color which is to be printed on the veneer is next put on to the stone in the required
imitation design by means of a leathor roller, the wood is then placed on it and
exposed to a pressure of about 13,000 pounds. The veneer thus far printed on is
then glued on to a strong plate or backing. After many vain attempts we have at
last succeeded in discovering a simple mode whereby this is made possible. We
have thus found that as for the glueing both pieces of wood must be well heated,
the heat causes the oil in the color to become fluid and thus causes the drawing to
be blurred or run. To counteract this we employ polished zinc or other mictal
plates, which must be cold and which are put on the drawing. We thus not only
prevent the color from running, but also prevent the glue from penetrating the
thin wood. The plate is then screwed together by the ordinary appliances or
clamps used for fixing veneer, and dried 4 or 5 hours. By putting on the polished
metal plates the veneer acquires a fine polish. The color is then fixed on by means
of whito Russian lacquer, and the surface is then polished. In order to prevent the
warping of the wood the back of the thick plate or backing may also be veneered.
Figure 1 shows a design applied to veneer in the described manner. Figure 2
is a section through a wood backing a with vencers b and c on both sides, as
described.
And having thus fully described the nature of this Invention, we declare that we
claim the mode herein described for producing imitation inlaid work by printing,
and specially the application therein of cold polished metal plates for preventing the
running of the colors and the penetration of the glue, all substantially as set forth.
In witness whereof, we, the said George Alberty and Otto Alberty, have hereunto
set our hands and seals, this Seventeenth day of November in the year of
our Lord One thousand eight hundred and seventy-six.
GEORG ALBERTY.
OTTO ALBERTY.
(L.S.)
(LS.)