AN IMPROVED ALLOY. OR METALLIC COMPOUND APPLICABLE FOR THE BEARINGS OR THE LINING OF BEARINGS OF MACHINERY
Year: 1870

page_text: LETTERS PATENT to Thomas Short Davis, of Bristol, in the County
of Somerset, Moulder, for the Invention of "AN IMPROVED ALLOY.
OR METALLIC COMPOUND APPLICABLE FOR THE BEARINGS OR THE LINING OF
BEARINGS OF MACHINERY."
.
Sealed the 16th August 1870, and dated the 2nd March 1870.
PROVISIONAL SPECIFICATION left by the said Thomas Short Davis at
the Office of the Commissioners of Patents, with his Petition, on.
the 2nd March 1870.
I, THOMAS SHORT DAVIS, of Bristol, in the County of Somerset,
5 Moulder, do hereby declare the nature of the said Invention for "An
IMPROVED ALLOY OR METALLIC COMPOUND APPLICABLE FOR THE BEARINGS OR THE
LINING OF BEARINGS OF MACHINERY," to be as follows:-
The object of my Invention of "an improved alloy or metallic com
pound applicable for the bearings or the lining of bearings of machinery

page_text: is to produce a cheap and good antifriction metal which may be used for
any of the above purposes. My improved alloy is composed of copper,
tin, nickel silver, and spelter or zinc.
These metals may be mixed in varying proportions, but as an example
I will give the following, without however binding myself rigidly
thereto :-5lbs. of copper, 1½ lb. of tin, and from 5 to 6 ounces of
nickel silver. These metals are melted and mixed together and then
allowed to cool. I then add to the mixture 28 lbs. of spelter or zinc,
and melt in any suitable vessel and well mix them together. The alloy
thus-made-may-be-run-at-once-into-the-bearings-to-form-a-lining-or-run-
into moulds, or it may be made into ingots and kept in that form until
required for use.
A useful alloy for the purposes of my Invention may be made without
the addition of the nickel silver, but I prefer to use this latter as I
consider it improves the metal.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Short Davis in the Great Seal Patent
Office on the 2nd September 1870.
.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
SHORT DAVIS, of Bristol, in the County of Somerset, Moulder, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Second day of March, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-
third year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Thomas Short Davis, Her special licence,
that I, the said Thomas Short Davis, my executors, administrators,
and assigns, or such others as I, the said Thomas Short Davis, my
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for
"AN
IMPROVED ALLOY OR METALLIC COMPOUND APPLICABLE FOR THE BEARINGS OR THE

page_text: LINING OF BEARINGS OF MACHINERY," upon the condition (amongst otliers)
that I, the said Thomas Short Davis, my executors or administrators,
by an instrument in writing under my, or their, or one of their hands
and seals, should particularly describe and ascertain the nature of the
said Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Thomas Short Davis, do hereby declare
the nature of my said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the
following statement (that is to say):
:-
The object of my Invention of an improved alloy or metallic compound
is to produce a cheap and durable antifriction metallic compound or
alloy which may be used for the bearings or the lining of bearings of
machinery. In manufacturing my improved alloy I use zinc or spelter as
the basis or chief ingredient, and I add thereto copper, tin, and nickel
silver.
A
These metals may be mixed in varying proportions and in different
manners without materially affecting the result. As an example I will
give the following proportions, without however binding. myself rigidly
thereto :-I take, say, five pounds of copper, one and a half pounds tin,
and from five to six ounces of nickel silver, and melt the same in a
suitable vessel. While in a molten state I mix the metals well together
by stirring, and when thoroughly mixed I allow the metals to cool, I
then add to the mixture twenty-eight pounds of spelter or zinc, and melt
the whole in any suitable vessel, and then by stirring I mix the zinc
thoroughly with the copper compound. The alloy thus made may be
run at once into the bearings required to be lined, or it may be run
into moulds to form bearings, or it may be cast into ingots and kept in
that form until required for use.
Having now set forth the nature of my Invention of "An Improved
Alloy or Metallic Compound Applicable for the Bearings or the Lining of
Bearings of Machinery," and explained the manner of carrying the same
into effect, I wish it to be understood that under the above in part recited
Letters Patent I claim, combining with spelter or zinc, copper, tin,

page_text: and nickle silver, in the manner and in or about the proportions above
given and for the purposes above set forth.
In witness whereof, I, the said Thomas Short Davis, have here-
unto set my hand and seal, the Thirty-first day of August,
in the year of our Lord One thousand eight hundred and
seventy.