Manufacture of Foliated Bronze or Metal Powder.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Manufacture of Foliated Bronze or Metal Powder.
I, LUDWIG WILHELM SCHÖFFER, of Gelnhausen, Germany, do hereby declare
the nature of this invention to be as follows:-
This invention relates to a manufacture of foliated bronze or metal powder
which is distinguished from the methods of production heretofore employed in
that the metals or alloys to be worked are in the first instance converted into a
fine powder which shews the ordinary structure of the metal worked, after which
the small pulverulent or dust-like particles are passed through pairs of highly
polished rollers whereby each particle is pressed flat and has a metallic lustre
imparted to it.
The metals or alloys can be converted by known means, whether mechanical,
electrolytical, or chemical into the finely pulverulent or dust-like form.
This metallic powder or dust is supplied by any suitable known feeding device
between a pair of rollers which bear closely one upon or laterally against the other,
and which have highly polished surfaces. In passing between the rollers une
metal particles are pressed flat and at the same time have a metallic lustre imparted
to them.
The lustre will be the greater, the purer the rolled metal dust is. The latter
must therefore be freed from oxides and other impurities by known means, before
being passed through the rollers.
In order to increase the brightness of the bronze or metal powder it is advan-
tageous to impart different speeds to the rollers through which the metal particles
pass, so that a polishing action is to a certain extent exercised upon the separate
small laminæ.
For detaching the metal laminæ from the rollers, knives, brushes, scrapers or
other detaching devices may be used. The metal particles may also be made to
pass successively through two or more pairs of rollers whether arranged one above
the other or side by side.
Dated this 92nd day of Manch 1907
ABEL & IMRAY,
Agents for the Applicant.
I, LUDWIG WILHELM SCHÖFFER, of Gelnhausen, Germany, do hereby declare
the nature of this invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement:-
This invention relates to a manufacture of foliated bronze or metal powder
which is distinguished from the methods of production heretofore employed in
that the metals or alloys to be worked are in the first instance converted into a
D...011

page_text: fine powder which shews the ordinary structure of the metal worked,. after which
the small pulverulent or dust-like particles are passed through pairs of highly
polished rollers whereby each particle is pressed flat and has a metallic lustre
imparted to it.
The metals or alloys can be converted by known means, whether mechanical,
electrolytical or chemical, into the finely pulverulent or dust-like form.
This metallic powder or dust is supplied by any suitable known feeding device
between a pair of rollers which bear closely one upon or laterally against the other,
and which have highly polished surfaces. In passing between the rollers the
metal particles are pressed flat and at the same time have a metallic lustre imparted
to them.
+
2.
-
The lustre will be the greater, the purer the rolled metal dust is. The latter
must therefore be freed from oxides and other impurities by known means, before
being passed through the rollers.
THE
In order to increase the brightness of the bronze or metal powder it is advan-
tageous to impart different speeds to the rollers through which the metal particles
pass, so that a polishing action is to a certain extent exercised upon the separate
small laminæ.
For detaching the metal laminæ from the rollers, knives, brushes, scrapers or
other detaching devices may be used. The metal particles may also be made to
pass successively through two or more pairs of rollers whether arranged one above
the other or side by side.
Having now, particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is :-
1. Manufacture of foliated bronze or metal powder from metals or alloys consist-
ing in first bringing the metal or alloy into the form of a fine grained powder, shew-
ing the ordinary structure of the metal, and then passing such metallic dust through
pairs of highly polished metal rollers, so as to be pressed flat thereby and to have
a metallic lustre imparted thereto, substantially as described.
+
2. The use for carrying out the manufacture referred to in the first claim, of a
pair of rollers revolving at different speeds, for the purpose of imparting a high
degree of lustre to the metal laminæ, substantially as described.
Dated this 13th day of December 1897.
: