IMPROVEMENTS IN STAMP CUSHIONS
Year: 1880

page_text: LETTERS PATENT to Gerard Wenzeslaus von Nawrocki, of the Firm of
J. Brandt and G. W. v. Nawrocki, of 124, Leipzigerstrasse, Berlin, in the
German Empire, Patent Agent, for an Invention of "IMPROVEMENTS IN
STAMP CUSHIONS." A communication by Wilhelm Haber, of Berlin, in
the German Empire.
PROVISIONAL SPECIFICATION left by the said Gerard Wenzeslaus von
Nawrocki at the Office of the Commissioners of Patents on the 9th July
1880.
GERARD WENZESLAUS VON NAWROCKI, of the Firm of J. Brandt and G. W. v.
Nawrocki, of 124, Leipziger Strasse, Berlin, in the German Empire, Patent Agent.
"IMPROVEMENTS IN STAMP CUSHIONS." A communication by Wilhelm Haber, of
Berlin, in the German Empire.
This Invention relates to improvements in stamping cushions or pads for
superseding those hitherto used, and distinguished from them by supplying
permanently the color without the necessity of feeding the cushion or pad with
now color whilst using it.
It consists of a box of metal, wood, or other suitable material, which is filled with
an elastic pasty substance saturated with the color, and on which the india rubber
stamp is used, in the same manner as with the ordinary stamping cushions or pads.
This improved color cushion or pad will fulfil its purpose without renewing the
material for the space of a year (more or less), and always possesses sufficient
moisture which it draws from the air, to serve as a distributor of the color, so long
as there remains a trace of the substance in the box.
This substance consists preferably of 1 part of gelatine, 1 part of water, 6 parts
of glycerine, and 6 parts of color mixed together, or it may be produced from a
mixture of gum with borax, ordinary Chinese glue, or similar stuffs.
The coloring of the substance can be done in any desired color or shade.
For instance, a black color can be produced from a blackening substance, such as
lamp soot, extract of logwood, or aniline, and to 350 parts of coloring matter, 1000
parts of water, and 10 parts of gum will be added, which are mixed into the gelatine
substance either by boiling or by grinding.
For obtaining a blue color, indigo, ultramarine, cobalt, aniline, Berlin or Paris
bluc, may be used.
Violet is produced by aniline or color mixture; red by cinnabar, carmine, or
other aniline color; green by aniline or color mixture.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Gerard Wenzeslaus von Nawrocki in the Great Seal Patent Office on
the 8th January 1881.
GERARD WENZESLAUS VON NAWROCKI, of the Firm of J. Brandt and G. W. von
Nawrocki, Patent Agents, of 124, Leipziger Strasse, Berlin, in the Empire of
Germany. "IMPROVEMENTS IN STAMP CUSHIONS." A communication by
Wilhelm Haber, of the City of Berlin, in the Empire of Germany.
This Invention consists in a substitute for the customary stamp cushions, and
differs from the same therein that it permanently gives off color without its being
necessary to apply fresh-color-to-the-cushion during the employment or use of the
same.
The said stamp cushion consists of a box of wood, metal, or other suitable
material, which is filled with an elastic mass or composition saturated with a
suitable color, so that it is only necessary to apply the india rubber (caoutchouc)
or other stamp to the said mass or composition saturated with color in the customary
manner, as is the case with ordinary stamp cushions.
The said stamp cushion fills its purpose for years without the material being
renewed, always contains sufficient moisture, which is drawn from the atmospheric
air, and continues to act as a color stamp cushion so long as a remnant of the mass
or composition remains in the box or receptacle.
The mass or composition consists preferably of 1 part gelatine, 1 part water,'
6 parts glycerine, and 6-parts coloring matter.
The said mass or composition can also be composed of, or made, or manufactured
from a mixture of gum with borax, ordinary Chinese glue, and other similar
materials.
The aforesaid mass or composition can be given any desired shade of color.
For instance, a suitable black color for coloring the aforesaid mass or composition
of the said stamp cushion or cushions can be made from the following materials:-
one part gelatine glue, agar-agar, or other suitable material, three parts of lamp black,
aniline black, or a suitable quantity of logwood extract, ten parts glycerine, one
part alcohol absolute, two parts water, one part Venetian soap, one fifth part
salicylic acid.
For red, blue, or violet, I generally employ about one part gelatine glue, agar-agar,
or other like material, two parts aniline of desired colour, one part alcohol absolute,
ten parts glycerine, one part Venetian soap, and one fifth part salicylic acid.
For blue stamp cushions or pads I also employ indigo, ultramarine, cobalt,
Prussian or Paris blue, or other suitable coloring matter.
For red stamp cushions or pads I employ vermillion, carmine, coin, or other
aniline, or other suitable coloring matter.
For green stamp cushions or pads I employ aniline or other suitable coloring
matter.
Having now described my said Invention of improvements in stamp cushions,
I wish it to be understood that I do not confine myself to the exact proportions of
the mixtures given in the foregoing Specification, as the same can be varied without
departing from the tenor of my said Invention, but what I do claim and desire to
have protected by Letters Patent is,―
An elastic stamp-cushion which permanently communicates color to india rubber
(caoutchouc) or other stamps, composed of gelatine or other similar more or less

page_text: elastic mass or composition, which said mass or composition is saturated with a
suitable colouring matter, substantially as described in the foregoing Specification.
In witness whereof, I, the said Gerard Wenzeslaus von Nawrocki, havo
hereunto set my hand and seal, this Fourth day of January, in the year
of our Lord One thousand eight hundred and eighty one.
HIRAADI