IMPROVEMENTS IN MACHINERY FOR BORING COPPER AND PROVISIONAL SPECIFICATION ITS ALLOYS FOR MAKING CYLINDERS, ROLLERS AND TUBE
Year: 1869

page_text: LETTERS PATENT to William Sumner and Eric Hugo Waldenström,
both of Manchester, in the County of Lancaster, Engineers, for
the Invention of "IMPROVEMENTS IN MACHINERY FOR BORING COPPER AND
PROVISIONAL SPECIFICATION left by the said William Sumner and
Eric Hugo Waldenström at the Office of the Commissioners of
Patents, with their Petition, on the 24th December 1869.
We, WILLIAM SUMNER and ERIC HUGO WALDENSTRÖM, both of
Manchester, in the County of Lancaster, Engineers, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN MACHINERY FOR
BORING COPPER AND ITS ALLOYS FOR MAKING CYLINDERS, ROLLERS, AND TUBES,"
to be as follows:-
Our Invention consists in boring a hole through the ingot or casting
for making the cylinder, roller, or tube by means of a crown boring
tool or annular drill, whereby the requisite hole is made and a solid bar of
nearly the size of the interior of the drill is obtained, whereas in the
ordinary mode of drilling or boring only cuttings or borings are produced.

page_text: This bar cut out by the annular drill may afterwards be manufactured
into cylinders, rollers, tubes, rods, wire, or other articles, or it may be
used as an ingot for re-casting or making alloys.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Sumner and Eric Hugo Waldenström in
the Great Seal Patent Office on the 23rd June 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
SUMNER and ERIC HUGO WALDENSTRÖM, both of Manchester, in the
County of Lancaster, Engineers, send greeting.
WHEREAS Her most. Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fourth day of December, in the
year of our Lord One thousand eight hundred and sixty-nine, in the
thirty-third year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said William Sumner and Eric Hugo
Waldenström, Her special licence that we, the said William Sumner
and Eric Hugo Waldenström, our executors, administrators, and assigns,
or such others as we, the said William Sumner and Eric Hugo Walden-
ström, our executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times there-
after 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 Inven-
tion for "IMPROVEMENTS IN MACHINERY FOR BORING COPPER AND ITS ALLOYS
FOR MAKING CYLINDERS, ROLLERS, AND TUBES," upon the condition (amongst
others) that we, the said William Sumner and Eric Hugo Walden-
ström, our executors or administrators, by an instrument in writing
under our, or their, or one of our or 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 we, the said William Sumner and Eric Hugo
Waldenström, do hereby declare the nature of our said Invention, and

page_text: 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) :-
Our Invention consists in boring a hole through the ingot or casting
for making the cylinder, roller, or tube, by means of a crown boring
tool or annular drill, whereby the requisite hole is made and a solid bar
of nearly the size of the interior of the drill is obtained, whereas in the
ordinary mode of drilling or boring only cuttings or borings are pro-
duced. This bar cut out by the annular drill may afterwards be manu-
factured into cylinders, rollers, tubes, rods, wire, or other articles, or it
may be used as an ingot for re-casting or making alloys.
And in order that our Invention may be fully understood, we will
proceed to describe the accompanying Drawing, in which Figure 1 is
a section of the crown boring tool or annular drill; and Figure 2 is a
plan of the same; Figure 3 is a section of an ingot through which a
hole has been bored; and Figure 4 a plan of the same.
It will be seen on referring to Figures 1 and 2 that the boring tool
is made of a thin steel tube with teeth on its lower edge, which teeth
are set so that the tool may not bind in the hole that is being bored out
When holes are bored through solid ingots by the usual drills or tools
only cuttings or borings are produced and these cuttings or borings are
comparatively of little value, but in boring out a solid ingot according
to our improved mode the ingot is divided into a shell a and a solid
bar b, see Figures 3 and 4, the only waste being the cuttings or borings
produced by the crown drill, the gate of which is very little more
than the thickness of the steel tube forming the body of the drill.
Having thus stated the nature of our Invention, and described a
convenient apparatus for performing the same, we declare that wo
claim, boring a hole in a solid ingot in the manner and for the purposes
described.
In witness whereof, we, the said William Sumner and Eric Hugo
Waldenström, have hereto set our hands and seals, this Twenty-
second day of June One thousand eight hundred and sovents.
W. SUMNER.
(L.S.)
ERIO HUGO WALDENSTRÖM. (L.S.)