Improvements in Metallic Alloys.
Year: 1888

page_text: Date of Application, 9th Aug., 1888
Complete Specification Left, 7th May, 1889-Accepted, 29th June 1.89.
PROVISIONAL SPECIFICATION.
Improvements in Metallic Alloys.
I PERCEVAL MOSES PARSONS of Melbourne House Blackheath in the County of
Kent Civil Engineer do hereby declare the nature of this Invention to be as
follows:-
My Improvements relate to that class of alloys which are composed of Copper and
Zinc or Copper and Tin or Copper Zinc and Tin together with Steel or Iron or
Manganese or Steel or Iron and Manganese which latter may be added in the form of
Ferro-Manganese or Spiegeleisen as described in the Specification of a Patent granted
to me February 7th 1876 No. 482 or in any other suitable manner and my
Improvements consist in adding aluminium to any of the above named alloys.
Dated this 9th day of August 1888.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents for the said Perceval Moses Parsons.
COMPLETE SPECIFICATION,
Improvements in Metallic Alloys.
1 PERCEVAL MOSES PARSONS of Melbourne House Blackheath in the County of
Kent Civil Engineer do hereby declare the nature of this Invention and in what
imanner the same is to be performed to be particularly described and ascertained in
and by the following statement :-
My Invention relates to that class of alloys which are composed of copper and
zine or copper and tin or copper zine and tin together with steel or iron or manganese
or steel or iron and manganese which latter may be added in the form of Ferro
Manganese or Speigeleisen as described in the Specification of Letters Patent No. 482
granted to me as of the 7th day of February A.D. 1876 or in any other suitable
manner and my present Invention consists in adding aluminium to any of the above
named alloys.
The quantity of aluminium added is varied according to the effect it is desired to
produce on the alloy and to a certain extent also on the proportions in which the
components of the alloy exist in it. The addition of a very small quantity of
aluminium is sufficient to give increased strength to the alloy and to make it more
fluid when molten its presence also diminishes oxidation so that from the alloys thus
treated very sound and well defined castings can he produced.
I have found that even one eighth of one part by weight of aluminium added to
one hundred parts by weight of any of the alloys described in the Specification of the
before named Patent has an appreciable effect in this respect and this amount may be
increased with advantage up to about two to three parts by weight to one hundred
parts by weight of the alloy. A still larger quantity of the aluminium may be used
if it is desired to obtain a very hard refractory metal but at the same time it becomes
more brittle, but both these qualities may be modified by reducing the tin or the zinc
as the dose of aluminium is increased.
I may add the aluminium in any convenient way for instance I may render the
components of the alloy, other than aluminium, molten and then insert thereinto a
block or blocks of aluminium thrusting it or them into the molten mass by means of
tongs or other suitable appliance and then by stirring the molten materials the
aluminium is melted and combines with the other components.

page_text: 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 :-
A metallic alloy consisting of any of the components hereinbefore named with the
addition of aluminium.