AN IMPROVEMENT IN MACHINES FOR ROLLING BARS FOR NOT BLANKS
Year: 1875

page_text: LETTERS PATENT to Alexander Melville Clark, of 53, Chancery Lane,
-
in the County of Middlesex, Patent Agent, for the Invention of
"AN IMPROVEMENT IN MACHINES FOR ROLLING BARS FOR NOT BLANKS."-
A communication from abroad by George Johnson, of Haverstraw,
in the County of Rockland, State of New York, United States of
America.
Sealed the 18th June 1875, and dated the 19th January 1875.
PROVISIONAL SPECIFICATION left by the said Alexander Melville
Clark at the Office of the Commissioners of Patents, with his
Petition, on the 19th January 1875.
I, ALEXANDER MELVILLE OLARK, of 53, Chancery Lane, in the County
of Middlesex, Patent Agent, do hereby declare the nature of the
said Invention for "AN IMPROVEMENT IN MACHINES FOR ROLLING BARS FOR
NUT BLANKS," to be as follows:-
-
This Invention consists of a revolving clearer having notches in its
periphery in combination with a pair of rolls for rolling notched bars,
the notches of the clearer corresponding to the notches in the rolls for

page_text: forming the hexagonal nuts, so as to mesh with the notches in tho soft
hot iron as it is received and discharged by the clearer, by which it dis-
charges the bar without injury to the corners to which it is subject with
an ordinary stationary clearer on which the corners are moved with such
pressure as to flatten and otherwise misshape them.
The revolving notched clearer is geared with the rolls, so that its
notches will mesh with the notches of the bar as it passes from the rolls.
In addition to this I arrange the upper roll a little in advance of the
lower one on the discharging side, so as to throw the bar down on the
clearer, and thereby prevent it from going up with the upper roll, as 1
it might otherwise do.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Alexander Melville Clark in the Great Seal Patent
Office on the 7th July 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALEXANDER
MELVILLE CLARK, of 53, Chancery Lanc, in the County of Middlesex,
Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Nineteenth day of January, in the year
of our Lord One thousand eight hundred and seventy-five, in the thirty- 2
eighth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Alexander Melville Clark, Her special licence
that I, the said Alexander Melville Clark, my executors, administrators,
and assigns, or such others as I, the said Alexander Melville Clark,
my executors, administrators, and assigns, should at any time agree 2
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 Invention
for "AN IMPROVEMENT IN MACHINES FOR ROLLING BARS FOR NUT BLANKS," a
communication to me from abroad by George Johnson, of Haverstraw, in
the County of Rockland, State of New York, United States of America,”
upon the condition (amongst others) that I, the said Alexander
Melville Clark, my executors or administrators, by an instrument in
3

page_text: 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
6 months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Alexander Melville Clark, do hereby
declare the nature of the 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
Sheet of Drawings, and to the letters and figures marked thereon (that is
to say) :-
=
This Invention consists of a revolving clearer having notches in its
periphery in combination with a pair of rolls for rolling notched bars,
the notches of the clearer corresponding to the notches in the rolls for
forming the hexagonal nuts, so as to mesh with the notches in the soft
hot iron as it is received and discharged by the clearer, by which it dis-
charges the bar without injury to the corners to which it is subject with
an ordinary stationary clearer, on which the corners are moved with such
pressure as to flatten and otherwise misshape them.
Figure 1 of the accompanying Drawing is a sectional elevation of the
improved rolling machine taken on the line x, x, of Figure 2, and
Figure 2 is a front elevation. Similar letters of reference indicate corre-
sponding parts.
The rolls A are notched in the bottom of the grooves at B to form
notched bars O, which cannot be discharged over a stationary clearer of
the ordinary kind without injury to the points of the notches. I have
therefore provided the revolving notched clearer D with notches corre-
sponding to the notches in the bar, and geared with the rolls, so that its
notches will mesh with the notches of the bar as it passes from the rolls.
In addition to this I arrange the upper roll a little in advance of the
lower one on the discharging side, so as to throw the bar down on the
clearer, and thereby prevent it from going up with the upper roll, as it
might otherwise do.
Having described the nature of the Invention, and the manner of

page_text: protected by the herein-before in part recited Letters Patent is, the com-
bination of a notched revolving clearer D with notched rolls for making
notched bars, the said clearer being geared with the rolls to mesh with
the notches of the bar, substantially as specified.
In witness whereof, I, the said Alexander Melville Clark, have 5
hereunto set my hand and seal, this Seventh day of July, in
the year of our Lord One thousand cight hundred and seventy-
five.