Improvements in the Manufacture of Alloys.
Year: 1893

page_text: Date of Application, 22nd Dec., 1893
Complete Specification Left, 22nd Oct., 1894-Accepted, 24th Nov., 1894
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Alloys.
I DAVID WILLIAM SUGG of Vincent Street in the City of. Westminster,
Engineer, do hereby declare the nature of this invention to be as follows:
This invention relates to improvements in the manufacture of alloys, which take
a golden hue, will resist to a considerable extent the action of the atmosphere and
weak acids, and will possess the desirable quality of malleability under the blows of
a hammer, whether in a heated or cold state.
The metals which I employ in the production of my alloys are copper, zinc, and
aluminium, to which I sometimes add a small proportion of tin.
In carrying out my invention, I take, to form a manageable pot of metal, say,
50 lbs. of copper, 40 lbs. of zinc or spelter, and 24 lbs. of aluminium. The zinc I
first melt, and add thereto the aluminium gradually in small pieces, the flux used
being nitrate of soda cake. When properly mixed, I pour the metal into ingot
moulds. I next fuse the copper (with the aid of nitrate of soda cake), and as soon
as it reaches its melting point, the compound of zinc and aluminium is added in or
about the proportion above indicated, and, by means of an iron stirring rod, I effect
a thorough mingling of the metals in the melting pot. When this is effected,
I increase the temperature of the furnace, so as to volatilize and drive off a
portion of the zinc, from which action I obtain an important result, viz.: &
malleable alloy.
For a pot of about the weight above indicated, I continue the boiling for some
20 minutes, more or less, and thus effect a change in the granular character of the
metal, removing its brittleness, and allowing of its being brought to shape under
the hammer.
In some cases, I propose to modify the quality of the alloy, by combining
therewith a small proportion of tin, which renders the mixture more homogeneous,
gives it a finer grain, and somewhat modifies the color. When the tin is used,
I apply it to the molten metal composed as above described and subjected to the
boiling process to render the alloy malleable.
The modified alloy admits of being forged with ease, when raised to a red heat.
Its surface hardness is increased by the presence of the tin, and its power of
resisting weak acids is also improved.
Dated this 22nd day of December 1893.
NEWTON & SON,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Alloys.
I DAVID WILLIAM SUGG of Vincent Street in the City of Westminster,
Engineer, 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
O following statement :-
This invention relates to improvements in the manufacture of alloys, which take
a golden hue, will resist to a considerable extent the action of the atmosphere and
weak acids, and will possess the desirable quality of malleability under the blows of
a hammer, whether in a heated or cold state.

page_text: The metals which I employ in the production of my alloys are copper, zinc, and
aluminium, to which I sometimes add a small proportion of tin.
In carrying out my invention, 1 take, to form a manageable pot of metal, say
50 lbs. of copper, 40 lbs. of zinc or spelter, and 24 lbs. of aluminium. The zinc I
may first melt, and add thereto the aluminium gradually in small pieces, the flux
used being nitrate of soda cake; or I may first melt the aluminium, and then add
the zinc. When properly mixed, I pour the metal into ingot moulds. I next fuse
the copper (with the aid of nitrate of soda cake), and as soon as it reaches its
melting point, the compound of zinc and aluminium is added, in or about the
proportion above indicated, and, by means of an iron stirring rod, I thoroughly
mingle the metals in the melting pot. When this is effected, I increase the
temperature of the furnace, so as to volatilize and drive off a portion of the zinc,
from which action I obtain an important result, viz.: a malleable alloy.
For a pot of about the weight above indicated, I continue the boiling for some
20 minutes, more or less, and thus effect a change in the granular character of the
metal, removing its brittleness, and allowing of its being brought to shape under
the hammer.
In some cases I propose to modify the quality of the alloy by combining
therewith a small proportion (about one per cent.) of tin, which reuders the mixture
more homogeneous, gives it a finer grain, and somewhat modifies the color. When
the tin is used, I apply it to the molten metal composed as above described, and
subject the metal to the boiling process to render the alloy malleable.
The modified alloy admits of being forged with ease, when raised to a red heat.
Its surface hardness is increased by the presence of the tin, and its power of
resisting weak acids is also improved.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:-
The manufacture of malleable alloys in the manner above set forth.
Dated this 20nd 1-
1004