Year: 1896

page_text: I, GILBERT DUCEAU, of 7 Place du Capitole, Toulouse France, Manufacturer,
do hereby declare the nature of this invention to be as follows:-
This invention relates to a new alloy consisting of aluminium, tin, and zinc, with
sometimes an addition of other metals or substances, for instance copper.
For ordinary parts of machinery, the alloy has about the following com-
position viz. :-
To make the alloy, the procedure resembles that for making the usual metallic
alloys that is to say the metals are mixed in or about the proportions stated and
melted, and then cast in moulds or into ingots. Care should be taken to ensure a
perfectly homogeneous mixture.
By casting, parts of all shapes and sizes can be made, and according to the various
uses in view, the parts may be employed in the condition in which they come from
the mould, or they may be machined or otherwise treated.
The proportions of the various metals composing the alloy and stated herein before,
are not invariable but can be altered to a certain extent. I may even add other
substances, according to the purposes, in view.
The alloy has remarkable properties which allow of its utilization for important
and widely different purposes.
It may be employed with advantage, as a substitute for the bronze used in
industry, for parts subjected to friction, such as bearings, steps of turbines,
washers, and for other parts of various kinds, because it can be melted, planed,
turned and, in short, be worked with the same ease as ordinary bronze or
gun-metal.
It has, as compared with bronze, the great advantage of being pliable at a low
temperature and of not seizing. The nature of the grain of the alloy is such as to
obviate the accidents which are so frequent with the ordinary bronze. It does.not
melt at a low temperature like antifriction metal of which however it has the
lubricating bases or properties. Experiments have shown that it lasts seven or
eight times longer than ordinary bronze, under the same conditions of working.
Notwithstanding this great superiority, the alloy enables manufacturers using it to
effect a saving in first cost, because it is much lighter than ordinary bronze and
costs about the same. Further it is practically inoxidisable, and takes a polish

page_text: industry, for parts subjected to friction, such as bearings, steps of turbines,
and washers, and for other parts of various kinds, because it can be melted,
planed, turned and, in short, be worked with the same ease as ordinary bronze or
gun-metal.
It has, as compared with bronze, the great advantage of being pliable at a low
temperature and of not seizing. The nature of the grain of the alloy is such as to
obviate the accidents which are so frequent with the ordinary bronze. It does not
melt at a low temperature like antifriction-metal, of which, however, it has the
lubricating properties. Experiments have shown that it lasts seven or eight times
longer than ordinary bronze, under the same conditions of working. Notwith-
standing this great superiority, the alloy enables manufacturers using it to effect
a saving in first cost, because it is much. lighter than ordinary bronze and costs
about the same. Further it is practically inoxidizable, and takes a polish which
gives it an appearance intermediate between that of nickel and that of silver-
that is to say, it is suitable for all the uses to which bronze, tin, and the alloys of
tin, zinc, etc., are put.
Its use gives excellent results for cock or valve making, the manufacture of
table-services and other household utensils, various articles, such as inkstands, plates
of all kinds, and articles of all shapes.
Further, its fine homogeneous grain enables it to be used as a substitute for
lithographic stone, whose properties and fineness it possesses.
When manufactured on a commercial scale, the alloy in relation to the qualities
produced, will not, as hereinbefore stated, be as dear as ordinary bronze, its lightness
(its weight being only that of ordinary bronze) rendering its cost 40 to 45% less,
than that of such bronze.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. An alloy comprising aluminium, tin, and zinc substantially as hereinbefore set
forth.
2. The hereinabove described improved alloys consisting of aluminium, tin and
zinc substantially in the proportions specified.
Dated this 10th dox
Al 1907
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.