IMPROVEMENTS IN THE MANUFACTURE OF FOIL OF TIN, ZINC, AND LEAD, AND ALLOYS OF THESE METALS
Year: 1880

page_text: LETTERS PATENT to Friedrich Hermann Felix Engel, Civil Engineer and
Patent Agent, in the City of Hamburg, Germany, for an Invention of
"IMPROVEMENTS IN THE MANUFACTURE OF FOIL OF TIN, ZINC, AND LEAD,
AND ALLOYS OF THESE METALS." A communication from Theodor
Schnitzlein, Manager of the New York Hamb-Gummiwaaren Fabrik, of
PROVISIONAL SPECIFICATION left by the said Friedrich Hermann Felix
Engel at the Office of the Commissioners of Patents on the 24th July
1880.
FRIEDRICH HERMANN FELIX ENGEL, Civil Engineer and Patent Agent, in the
City of Hamburg, Gerinany. "IMPROVEMENTS IN THE MANUFACTURE OF FOIL
OF TIN, ZINC, AND LEAD, AND ALLOYS OF THESE METALS." A communication
from Theodor Schnitzlein, Manager of the New York Hamb-Gummiwaaren
Fabrik, of the City of Hamburg, Germany.
This Invention relates to certain improvements in the manufacture of foil of
tin, zinc, and lead, and alloys of these metals.
Tin-foil, zinc foil, and other foils have hitherto been manufactured by rolling
or hammering blocks or plates of the respective metal. This new process of manu-
facturing foil of tin, zinc, and lead, and alloys of these metals, consists of bringing
the metal in molten state on to a pair of iron or steel rollers placed in a horizontal
plane one beside the other. The space between the rollers can be varied and
so adjusted that the metal after having once passed through the rollers gives a
foil of the desired thickness. The diameters of the rollers as well as the revolving
velocity imparted to them varies according to the melting point of the metal worked
into foil.
The metal may directly be poured on to the rollers or be led on to the rollers
This new process saves a great
through a pipe or channel from the melting stove.
deal of labour and requires a far less power than the old system, and enables a foil
of unlimited length and of superior quality to be produced.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, and of
an Order of the Lord Chancellor, filed by the said Friedrich Hermann Felix
Engel in the Great Seal Patent Office on the 15th February 1881.
FRIEDRICH HERMANN FELIX ENGEL, Civil Engineer and Patent Agent, in the
City of Hamburg, Germany. "IMPROVEMENTS IN THE MANUFACTURE OF FOIL
OF TIN, ZINC, AND LEAD, AND ALLOYS OF THESE METALS." A communication
from Theodor Schnitzlein, Manager of the New York Hamb-Gummiwaaren
Fabrik, of the City of Hamburg, Germany.
This Invention relates to certain improvements in the manufacture of foil of tin,
zinc, and lead, and alloys of these metals.
Tin foil, zinc foil, and other foils have hitherto been manufactured by rolling or
hammering blocks or plates of the respective metal. This new process of manu-
facturing foil of tin, zinc, and lead, and alloys of these metals, consists in bringing
the metal in molten state on to iron or steel rollers placed in pairs, either in
horizontal or vertical position, beside or above each other. The space between the
rollers can be varied, and may be so adjusted that the metal after having once
passed through the rollers gives a foil of the desired thickness. The diameter of
the rollers, as well as the velocity of revolution imparted to them, varies according
to the melting point of the metal to be worked into foil.
The rollers must be cooled off or heated to such a temperature as required for the
metal or alloy which is worked into foil, which temperature varies with the different
alloys or metals. The cooling or heating of the surface of the rollers may be
produced by any of the known modes for such purpose.
The metal may be directly poured on to the rollers or be led on to the rollers
through a pipe or channel from the melting stove, and two pipes or channels may
be used to supply two different qualities of metal between the rolls to make faced
or superposed foil. This new process saves a great deal of labour, and requires a
far less power than the old system, and enables a foil of unlimited length and of
superior quality to be produced.
The rollers may also be placed one above the other, and in this case the metal
must be introduced into the space between the rollers by a slope or other
mechanical arrangement.
Having now described the nature and particulars of the said Invention, I
claim,―
The mode of manufacturing foil out of tin, zinc, and lead, and alloys of these
metals, by bringing the corresponding metal in molten state on to or between the
free space of revolving rollers arranged in pairs, and by passing it through these
rollers, substantially in the manner as described.
In witness whereof, I, the said Friedrich Hermann Felix Engel, have hereunto
set my hand and seal, this Eleventh day of February, in the year of our
Lord One thousand eight hundred and eighty one.
F. H. F. ENGEL. (L.S.)