AN IMPROVEMENT IN THE MANUFACTURE OF BAND SAWS, AND OTHER ENDLESS BANDS OR HOOPS OP METAL
Year: 1856

page_text: LETTERS PATENT to Robert. Thomas Eadon, of the firm of Moses
Eadon and Sons, of Sheffield, in the County of York, Steel Manu-.
facturers, for the Invention of "AN IMPROVEMENT IN THE MANUFACTURE
:
Sealed the 24th December 1856, and dated the 9th July 1856.
PROVISIONAL SPECIFICATION .left by the said Robert Thomas: Eadon
at. the Office of the Commissioners of Patents, with his Petition, on
the 9th July 1856.
I, ROBERT THOMAS EADON, of the firm of Moses Eadon and Sons, of
5 Sheffield, in the County of York, Steel Manufacturers, do hereby declare the
nature of the said Invention for "AN IMPROVEMENT IN THE MANUFACTURE OF
BAND SAWS, AND OTHER ENDLESS BANDS OR HOOPS OP METAL," to be as follows:-
My Invention consists in bending a bar or rod of cast steel, or other metal
suitable for the purpose required, into a circular form, and welding the ends
thereof in order to ensure a perfect joint, then in reducing the bar to the
thickness required between rolls, whereby an endless band; whether for band
'saws, cask hoops, or for other purposes is produced of uniform strength. The
bands are susceptible of receiving an uniformity of temper, and are as strong
at one part as at another.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Robert Thomas Eadon in the Great Seal Patent Office on
the 7th January 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
THOMAS EADON, of the firm of Moses Eadon and Sons, of Sheffield, in the
County of York, Steel Manufacturers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Ninth day.of. July, in the year of our Lord One
thousand eight hundred and fifty-six, in the twentieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Robert Thomas Eadon, Her special licence that the said Robert Thomas
Eadon, my executors, administrators, and assigns, or such others as I, the
said Robert Thomas Eadon, 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
IMPROVEMENT IN THE MANUFACTURE OF BAND SAWS, AND OTHER ENDLESS BANDS
OR HOOPS OF METAL," upon the condition (amongst others) that I, the said
Robert Thomas Eadon, my executors or administrators, by an instrument:
in writing under my, or their, or one of their hands and seals, should par-.
ticularly 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 Robert Thomas Eadon, 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 thereof, that is to say :-
My Invention consists in bending a bar or rod of cast steel, or other metal
suitable for the purpose required, into a circular form, and welding the ends
thereof in order to ensure a perfect joint, then in reducing the bar to the
thickness required between rolls, whereby an endless band, whether for band
saws, casks, hoops, or for other purposes, is produced of, uniform, strength.
The bands are susceptible of receiving an uniformity of temper, and are as
strong at one part as at another.
The exact manner in which I carry my Invention into effect is as follows:-;
I first take a bar of welding cast steel, of length, width, and strength suitable
to the size of the saw, band, or hoop required, and of sufficient strength and

page_text: weight to enable a smith to obtain a perfect weld. Having thus obtained a
solid hoop, it is put into such a furnace as is ordinarily used in the saw trade,
and when heated red hot it is brought out and placed between a pair of open
end rolls. The pressure exerted upon the rolls is regulated by a screw made
to act upon the top roll. The alternate beating and rolling are continued until
the saw, hoop, or band is reduced to the extent required. If the hoop is
intended for a band saw, it is toothed with a bed and punch, with the common
press or fly. The teeth and back of the saw are afterward filed.
The saw band or hoop is now folded up into several coils and put into a
saw-hardening furnace; it is heated red hot and precipitated into a cistern
containing fish oil; when removed therefrom the oil is partially wiped off and
the coil again placed into the furnace until the requisite temper is obtained.
The saw band or hoop is afterwards smithed, planished, or hammered, until
it is free from twist and bends, and straightened on both edges, so that no
obstruction may occur in sawing or cutting except from the teeth or edge.
The saw band or hoop is then ground and glazed in the ordinary manner,
except that in turning over from one side to the other the saw hoop or
band is turned inside out, so that both sides may be ground and glazed.
Any irregularities or bends that have been caused by grinding are afterwards
straightened on a wood block of lignum vitæ, or other hard wood, and a
smooth faced hammer, so as not to cut or mark the body. The saw band or
hoop is afterwards tempered. by "bluing" in an ordinary bluing stove in
sand, any elasticity that hammering, grinding, &c.. may have deprived it of
being thereby restored. When the teeth have been shaped in the ordinary
manner followed in the trade the saw is ready for use.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I claim as my improve-
ment in the manufacture of band saws and other endless bands of metal, the
bending of a bar of cast steel or other suitable metal into a hoop, welding the
two ends together, and reducing the same by rolling to the desired thickness
between rolls, in the manner and for the purposes herein-before described.
In witness whereof, I, the said Robert Thomas Eadon, have hereunto
set my hand and seal, this Sixth day of January, One thousand eight
hundred and fifty-seven.
ROBERT THOMAS EADON. (L.S.)
January 6th, 1857.