IMPROVEMENTS IN, PROCESSES FOR PRODUCING DESIGNS, ORNAMENTATION, &C., UPON ARTICLES OF ARTIFICIAL IVORY OR OF OTHER SIMILAR SUBSTANCES OR COMPOSITIONS
Year: 1881

page_text: LETTERS PATENT to Raphael Hunter Brandon, of No. 1, Rue Laffitte, Paris, in
the Republic of France, Engineer and Patent Agent, for an Invention of
"IMPROVEMENTS IN, PROCESSES FOR PRODUCING DESIGNS, ORNAMENTATION,
&C., UPON ARTICLES OF ARTIFICIAL IVORY OR OF OTHER SIMILAR SUBSTANCES
OR COMPOSITIONS." A communication from abroad by Isaiah Smith Hyatt,
of the United States of America.
COMPLETE SPECIFICATION filed by the said Raphael Hunter Brandon at the
Office of the Commissioners of Patents on the 5th April 1881.
RAPHAEL HUNTER BRANDON, of No. 1, Rue Laffitte, Paris, in the Republic of
France, Engineer and Patent Agent. "IMPROVEMENTS IN PROCESSES FOR
PRODUCING DESIGNS, ORNAMENTATION, &C., UPON ARTICLES OF ARTIFICIAL
IVORY OR OF OTHER SIMILAR SUBSTANCES OR COMPOSITIONS." A communication
from abroad by Isaiah Smith Hyatt, of the United States of America.
This Invention has relation to the application of designs, letters, characters, &c.,
to articles of commerce of many kinds made of various powdered substances or
compositions capable of being successfully treated by compression in heated dies or
moulds.
The novelty of this process consists essentially in the employment in connection
with heat and pressure of a powdered material and an ink or sizing which is com-
posed of or carries a color. The design is applied to the mould or die in ink or in a
sizing and the mould filled with the powdered material.
The pressure and heat are then applied and the article completed, or the
pressure is applied first long enough to cause an absorption of the ink or color and
the heat applied afterwards.
The ink or sizing may be put on the mould in many ways. It may be printed
by means of type or designs of elastic material, or applied by hand or otherwise, as
may be convenient. I prefer however, where it is practicable, to cut or engrave
the lettering or design in the face of the mould or die, and apply the ink to the
design as is customary in the art of plate printing. The preferred method is fully
described hereinafter, and I recommend its employment particularly where a
superior order of ornamentation is desired.
The inks or dyes commonly used in printing and dyeing or sizing which contain
the colors of which such inks and dyes are made may be used.

page_text: I
While, as is evident, my-process may be practised in many different ways
prefer and recommend the following where the mould is of such a shape that the
steps I describe are practicable:-
I cut or engrave the design in intaglio in the face of the die, finishing it
substantially as an ordinary steel plate. I then apply the ink in any convenient
way, and wipe the plate carefully. The design having been properly inked, the
mould or die is filled with the powdered material, and the pressure and heat applied
and continued until the article is completed.
If preferred, which may be desirable in some instances, the pressure above may
be applied in the first case to cause an effectual absorption of the ink, and subse-
quently heat may be applied without discontinuing the pressure.
I have found that a pressure of from 1 to 2 tons per square inch answers the
purpose proposed, but whatever pressure is sufficient to complete or solidify the
article will be sufficient to effectuate the object of my process; the heat applied
may vary from 250 to 275 degrees Fahrenheit.
I am also able to produce a bronze effect by mixing bronze powder with a varnish
or drying oil and applying the compound to the die or mould according to the
process above described.
In the case of a flat article, if it be found when it is taken from the mould that
the design is raised to too great an extent, this objection may be corrected by
subjecting the article to pressure in a plain mould having no engraved surfaces,
similar in shape to that in which the article has been formed.
In some instances it may be found expedient to apply a thin layer of powder on
the ink or sizing before filling the mould, in which event the same will be sifted
upon the ink or sizing and the mould then filled and the heat and pressure applied
as above set forth.
I do not limit my claim to any method of applying the design to the mould nor
to the treatment of any particular material or substance, neither do I confine myself
to any specific ink or sizing, but.
What I claim and desire to secure by Letters Patent is,-
1. A process of applying designs, &c., to articles which are made by pressing a
power that is plastic under heat in heated moulds, which consists in (1) cutting the
design in intaglio in the face of the mould, (2) inking or coloring it, (3) filling the
mould with the powder of which the article is intended to be formed, and (4)
completing the article and application of the design by means of heat and pressure,
substantially as setforth.
2. A process of applying designs, &c., to articles which are made by pressing a
powder that is plastic under heat in heated moulds, which consists in (1) applying
the design to the mould in ink or a sizing, (2) filling the mould with the powder of
which the articles is intended to be formed, and (3) completing the article and
application of the design by means of heat and pressure, first applying pressure to
effect an absorption of the ink or color and then applying both heat and pressure,
substantially as setforth.
In witness whereof, I, the said Raphael Hunter Brandon, have hereunto set
my hand and seal, the Twenty sixth day of March, One thousand eight
hundred and sights one
Witness,
HENRI MEÁ,
A. H. GENTNER.
R. H. BRANDON. (L.S.)