IMPROVEMENTS IN MACHINERY EMPLOYED FOR THE MANUFACTURE OF NAILS
Year: 1875

page_text: LETTERS PATENT to Edward Bates and Richard Smith Thornton,
both of Leeds, in the County of York, for the Invention of
PROVISIONAL SPECIFICATION left by the said Edward Bates and
Richard Smith Thornton at the Office of the Commissioners of
Patents, with their Petition, on the 22nd July 1875.
We, EDWARD BATES and RICHARD SMITH THORNTON, both of Leeds,
in the County of York, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN MACHINERY EMPLOYED FOR THE MANUFACTURE
OF NAILS," to be as follows:-
Our improvements have reference to a Patent obtained by C. J.
Coates, No. 13,089, in the year 1850, entitled improvements in the
manufacture of bolts, spikes, and nails, and the present improvements
are as follows .—
-
The framework of the present machine is constructed in a similar
manner to that of the herein-before mentioned.

page_text: Firstly. Our improvements have reference to the arrangement of
parts employed for transmitting motion to the shears used for cutting
the pieces for forming the nails We obtain the motion for working
the shears by means of a cam on the driving shaft, this cam operates
direct upon the incline at the back of the shears through a straight bar
or pillar, having a wedge formed to suit the incline, and an adjustable
metal shoe is fitted on the other end which works on the cam This
arrangement dispenses with the bell-crank lever and roller used on the
heiein-before mentioned machine, and gives more steadiness to the
working of the shears. We also employ by preference chilled cast-iron
shearing blades instead of steel ones, steel blades being liable to crack
much more than chilled cast iron. The shear blades and parts connected
therewith are made adjustable..
Our improvements further consist in those parts of the machine
employed for holding, heading, and forming the nail We provide on
the driving shaft a cam, eccentric, or their equivalents, for giving the
required motion to the 'header," and make this motion separate from
that of the bracket employed for holding the nail. Motion is trans-
mitted to the apparatus employed for holding the nail from the forming
and heading apparatus, this motion being transmitted through a roller
or duinmy acting upon an incline or shape on the bracket carrying the
holder.
The object of making the motion of the header separate from that of
the holder is to give more time for heading.
To prevent breakage or other damage which frequently occurs to
existing machines by too suddenly throwing back the feed motion, we
provide by preference on the driving shaft a "snail" arrangement,
whereby the feed motion is brought back ready to receive another plate
more slowly and without a jerk.
We provide regulating screws for adjusting the slide employed for
bringing down the cut iron to form the nail. Adjustment can be made
in this arrangement without stopping the machine, saving a considerable
amount of both time and labour thereby.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Edward Bates and Richard Smith Thornton in the
Great Scal Patent Office on the 22nd January 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wc, EDWARD
BATES, and RICHARD SMITH THORNTON, both of Leeds, in the County
of York, send greeting.
WHEREAS IIer most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-second day of July, in the year
of our Lord One thousand eight hundred and seventy-five, in the thirty-
ninth year of Her reign, did, for Herself, Пer heirs and successors,
give and grant unto us, the said Edward Bates and Richard Smith
Thornton, Her special licence, that we, the said Edward Bates and
Richard Smith Thornton, our executors, administrators, and assigns, or
such others, as we, the said Edward Bates and Richard Smith Thornton,
our executors, administrators, and assigus, 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
"IMPROVEMENTS IN MACHINERY EMPLOYED FOR THE MANUFACTURE OF NAILS,”
upon the condition (amongst others) that we, the said Edward Bates
and Richard Smith Thornton, our executors, or administrators, by
an instrument in writing under our, 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 per-
formed, and cause the same to be filed in the Great Scal Patent
Office within six calendar months next and unmediately after the date
of the said Letters Patent.
NOW KNOW YE, that we, the said Edward Bates and Richard Smith
Thornton, do hereby declare the nature of our said Invention, and in
what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement, reference being
had to the accompanying Drawings, and to the letters and marks
thereon.―

page_text: Manufacture of Bolts, Spikes, and Nails," and the present improve-
ments are as follows.-
-
The framework of the present machine is constructed in a similar
manner to that of the herein-before mentioned.
Firstly. Our improvements have reference to the arrangement of
parts employed for transmitting motion to the shears used for cutting
the piece for forming the nails We obtain the motion for working the
slcars by means of a cam on the driving shaft, this cam operates direct
upon the machine at the back of the shears through a straight bar or
pillar having a wedge formed to suit the incline, and an adjustable :
metal shoe is fitted on the other end which works on the cam This
arrangement dispenses with the bell-crank- lever and roller used on the
herein-before mentioned machine, and gives more steadiness to the
working of the shears. We also employ by preference chilled cast-iron
shcaring blades instead of steel ones, steel blades being liable to crack
much more than chilled cast iron. The shear blades and parts connected
therewith are made-adjustable.
Our improvements further consist in those parts of the machine
employed for holding, heading, and forming the nail. We provide on
the driving shaft a cam, eccentric, or their equivalents, [for giving
the required motion to the "header," and make this motion separate
from that of the bracket employed for holding the nail Motion is
transmitted to the apparatus employed for holding the nail from the
forming and heading apparatus, this motion being transmitted through a
roller or dummy acting upon an incline or shape on the bracket carrying 1
the holder.
The object of making the motion of the header separate from that of
the holder is to give more time for heading.
To prevent breakage or other damage which frequently occurs to
existing machines by too suddenly throwing back the feed motion, we
provide by preference on the driving shaft a “snail” arrangement,
whereby the feed motion is brought back ready to receive another plate
more slowly and without a jerk.
We provide regulating screws for adjusting the slide employed for
bringing down the cut iron to form the nail. Adjustment can be made
in this arrangement without stopping the machine, saving a considerable
amount of both time and labour thereby.

page_text: Fourth. The means employed for adjusting the slide for bringing
down the cut iron to form the nail, substantially as and for purposes
herein set forth.
Fifth. The combination of the various parts forming the machine,
substantially as and for purposes herein set forth.
'
In witness whercof, we, the said Edward Bates and Richard
Smith Thornton, have hereunto set our hands and scals, this
Twenticth day of January, in the year of our Lord Ono thousand
eight hundred and seventy-six.