A New Product or Compound for Preventing the Formation of Pores in Molten Metals and the Manufacture of the same.
Year: 1890

page_text: Date of Application, 3rd Sept., 1890
Complete Specification Left, 3rd June, 1891-Accepted, 4th July, 1591
PROVISIONAL SPECIFICATION.
A New Product or Compound for Preventing the Formation of Pores
in Molten Metals and the Manufacture of the same.
We FRANZ BURGER, Jeweller of 69 Fuhlentwiete Neustädter, Hamburg and
RICHARD MANNHEIMER, Merchant of 169 Friedrichstrasse Berlin both in the
Empire of Germany do hereby declare the nature of our said invention to be as
follows:-
The invention hereinafter described relates to a new industrial product or
compound that is to say a mixture for preventing the formation of pores in
molten metal, this mixture being added to such molten metal so as to form a
layer on the top thereof. In this manner we prevent the air gaining access to
the various parts of the metal whilst being cast and thus rendering the forma-
tion of pores in the resulting casting practically impossible. The new product
hereinafter called "Antiporous" is prepared by melting together chemically pure
zinc, lead and wax and casting the same in suitable moulds, the above substances
being used in as pure a state as obtainable. Antiporous is prepared in the
following proportions 100 parts by weight of chemically pure zinc, 2 parts by
weight of pure lead and 2 parts by weight of pure wax. The quantity of metallic
mixture added to the molten metal depends upon the nature of the latter
saya part by weight of the mixture being added to 100 parts by weight of the
metal in the case of gold and for silver about one part of antiporous with 100 parts
of molten metal.
The addition of the antiporous compound to the molten metal causes the mixture
to be volatilized to such an extent that neither the colour nor the nature of the
molten metal can be injuriously affected.
D. 1
a
1000
JOHN G. WILSON,
Patent Office, 55, Market Street, Manchester, Agent for the Applicants.
COMPLETE SPECIFICATION.
A New Product or Compound for Preventing the Formation of Pores
in Molten Metals and the Manufacture of the same.
We FRANZ BURGER, Jeweller of 69 Fuhlentwiete Neustadter, Hamburg and
RICHARD MANNHEIMER Merchant of 169 Friedrichstrasse, Berlin, both in the
Empire of Germany do hereby declare the nature of our said invention and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement :-
The invention hereinafter described relates to a new industrial product or com-
pound that is to say a mixture for preventing the formation of pores in molten
metal so as to form a layer on the top thereof. In this manner we prevent the air
gaining access to the various parts of the metal whilst being cast and thus
rendering the formation of pores in the resulting casting practically impossible.
The new product hereinafter called Antiporous is prepared by melting
together chemically pure zinc, lead, and wax and casting the same in suitable molds
the above substances being used in as pure a state as obtainable. Antiporous is
prepared in the following proportions 100 parts by weight chemically pure
zinc, 2 parts by weight of pure lead and 2 parts by weight of pure wax.
quantity of metallic mixture added to the molten metal depends upon the nature
Price dl
The

page_text: of the latter say a part by weight of the metal in the case of gold and for silver
about one part of antiporous with 100 parts of molten metal.
The addition of the antiporous composition to the molten metal causes the
mixture to be volatilized to such an extent that neither the colour or the nature of
the molten metal can be injuriously affected thereby.
Having thus particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that
what we claim is :-
"
1st. The new or improved industrial product or compound called “ Antiporous
composed of zinc, lend, and wax in or about the proportions herein before specified
substantially as and for the purpose hereinbefore described.
Dated this 2nd day of June
JOHN G. WILSON,
Agent for the Applicants.