Year: 1885

page_text: I ARTHUR MARTYN of 209 The Grove, Hammersmith in the County of Middlesex
do hereby declare the nature of this invention to be as follows:-
My Invention relates to the production of letters, patterns or designs upon coloured
or white glass, metal, or other surfaces.
I form such pattern or design with a sticky ink which I print upon the surface
of the glass or metal by means of a flexible printing block or stamp having the
required pattern or design formed upon it.
The ink which I prefer to use is copal varnish rendered thick by heat but other
suitable resinous or other sticky material adapted to the purpose, or transfer ink
may be used and I prefer the printing block or stamp to be made of India rubber,
printers roller composition, or other suitable elastic material.
When I employ such printing block or stamp it is coated with the ink, as in
printing, and the design is printed from it on to the glass or metal which is then
dusted over with powdered pitch or other bituminous powder, or resin or other
powder may be used which will melt on the application of a moderate beat.
Instead of the direct printing as described I sometimes form the designs upon
the glass or metal by the ordinary process of transfer in which case I employ a
sufficiently sticky ink to hold the powder dusted on
The powder coming in contact with the sticky ink adheres to it & that which is
superfluous being brushed off, the glass or metal is exposed to sufficient heat to
melt or run the powder adhering to it.
The glass or metal where covered by the pattern or design is thus protected by a
strong and impervious coating which will resist the action of acid and the
unprotected parts may be etched away in the manner usually employed leaving
the surface, when cleaned, with the letters, pattern or design formed upon it.
ARTHUR MARTYN.

page_text: Improvements in Forming Letters or Designs upon Glass or
other Surfaces.
I ARTHUR MARTYN of 209 The Grove, Hammersmith in the County of
Middlesex Show Card Manufacturer do hereby declare the nature of this inven-
tion 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 the production of letters, patterns, or designs upon coloured
or white glass, metal or other surfaces.
I form such pattern or design with a sticky ink which I print upon the surface
of the glass or metal by means of a flexible printing block or stamp having the
required pattern or design formed upon it.
0
The ink which I prefer to use is copal varnish rendered thick by heat but other
suitable resinous or other sticky material adapted to the purpose, or transfer ink,
may be used, and I prefer the printing block or stamp to be made of India rubber
printers roller composition or other suitable elastic material.
When I employ such printing block or stamp it is coated with the ink as in
printing, and the design is printed from it on to the glass or metal which is then
dusted over with powdered pitch or other bituminous powder, or resin or other
powder may be used which will melt on the application of a moderate heat.
The powder coming in contact with the sticky ink adheres to it and that which
is superfluous being brushed off, the glass or metal is exposed to sufficient heat to
melt or run the powder adhering to it.
The glass or metal where covered by the pattern or design is thus protected by
a strong and impervious coating which will resist the action of acid, and the
unprotected parts may be etched away in the manner usually employed leaving
the surface, when cleaned, with the letters, pattern, or design formed upon it.
1
I do not find in practice that the ordinary process of transferring is of practical 2
utility & therefore I do not intend to employ this method in connection with my
improved process but I intend to confine myself exclusively to the method
described of direct printing on the glass in a sticky ink from a flexible printing
block having the required letters or design raised or formed upon it & which is
inked as an ordinary printing block.
In making the block I usually employ a mould of the letters or design I wish to
print & cast the flexible material into it & this when set, and removed from the
mould is ready for use, but the block can be made in other ways.
Although various inks may be used I find the most suitable to be copal varnish
thickened by heat and tempered to working consistency with boiled oil. This is 3
very tenacious and readily holds the powder brushed on.
I find that powdered asphaltum when dusted on to the print & thoroughly
melted gives a very impervious coat to the glass & this is the powder I prefer to
but in applying the heat care must be taken to apply it for a sufficient time
only to thoroughly melt or run the powder, for if the heat be too great or applied
use,

page_text: for too long a time the powder will run beyond its proper limit and blurr the print.
When it is seen that the dull powdered surface has become thoroughly glazed the
heating should be discontinued or the glass withdrawn.
The glass with the required parts protected in this way is subjected to
hydrofluoric acid in the manner usual in etching.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed I declare that what
I claim is
1. The forming of any required design or pattern upon coloured or other glass in
a sticky ink by means of direct printing from a flexible block or stamp having the
design or pattern raised upon it.
2. Dusting over the sticky print thus formed with powdered asphaltum or other
bituminous or resinous powder which will melt by the application of heat.
3. Subjecting the glass thus prepared to sufficient heat to melt or run the
powder into an even & glassy coating impervious to the etching acid afterwards
employed.