IMPROVE- MENTS IN THE MANUFACTURE OF TYRES FOR WHEELS AND IN MACHINERY USED THEREIN
Year: 1881

page_text: LETTERS PATENT to William Hassalwood Carmont, of Manchester, in the
County of Lancaster, Consulting Engineer, for an Invention of "IMPROVE-
MENTS IN THE MANUFACTURE OF TYRES FOR WHEELS AND IN MACHINERY
USED THEREIN."
PROVISIONAL SPECIFICATION left by the said William Hassalwood Carmont
at the Office of the Commissioners of Patents on the 18th October 1881.
WILLIAM HASSALWOOD CARMONT, of Manchester, in the County of Lancaster,
Consulting Engineer.
"IMPROVEMENTS IN THE MANUFACTURE OF TYRES FOR
WHEELS AND IN MACHINERY USED THEREIN."
The object of my Invention is to reduce the labour and cost of rolling light
tyres, and my improvements consist in making a number of tyres out of one blank,
and in apparatus for effecting the same. In performing my Invention I roll a
blank into an annular or cylindrical plate of the desired diameter, and sufficiently.
wide to form two or more tyres. I then place the annular plate between rolls, in
and on which are annular recesses and projections of about the width of the light
tyres required. The projections on oue roll correspond with the recesses in the
other. The rolls are caused to rotate and approach each other like the rolls of an
ordinary rolling mill, and they thus divide the annular plate into several rings
or tyres.
When it is not convenient to use my improved rolls, the annular plate may be
placed in a lathe and divided into several tyres by ordinary cutting tools. I form
my improved dividing rolls by preference of a number of circular discs fitted on
two shafts, which are mounted and driven in any convenient manner.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Hassalwood Carmont in the Great Seal Patent Office
on the 18th April 1882.
“
WILLIAM HASSALWOOD CARMONT, of Manchester, in the County of Lancaster,
Consulting Engineer. IMPROVEMENTS IN THE MANUFACTURE OF TYRES FOR
WHEELS AND IN MACHINERY USED THEREIN."
The object of my Invention is to reduce the labor and cost of rolling light tyres,
and my improvements consist in making a number of tyres out of one blank, and
in apparatus for effecting the same.
In performing my Invention I roll a blank into an annular or cylindrical_plate
of the desired diameter, and sufficiently wide to form two or more tyres. I then
place the annular plate between rolls, in which are annular recesses and projections
of about the width of the light tyres required. The projections on one roll corre-
spond with the recesses in the other. The rolls are caused to rotate and approach
each other like the rolls of an ordinary rolling mill, and they thus divide the
annular plate into several rings or tyres.
I form my improved dividing rolls by preference of a number of circular discs
fitted on two shafts, which are mounted and driven in any convenient manner.
And in order that my Invention may be fully understood and readily carried
into effect, I will describe the accompanying Sheet of Drawings, reference being
had to the Figures and letters marked thereon.
Fig. 1 shows a pair of my improved rolls, between which a cylindrical plate has
been placed in readiness to be operated upon; Fig. 2 shows the rolls after they
have divided the plate.
These improved rolls are or may be used in a rolling mill of the ordinary
construction. The roll a fixed on the shaft b is provided with two flanges to keep
the annular plate to be rolled in position. It has two rolling surfaces of major and
two of minor diameter. The shaft b rotates in fixed bearings secured to the frame
of the machine, and it is driven by the ordinary gearing. The second roll c has
two rolling surfaces of major diameter and two rolling surfaces of minor diameter.
It is fixed on the shaft d which turns in bearings, to which a forward motion is
imparted in the usual manner to cause the roll c to approach the roll a to divide
the annular plate e (shown in section) and to roll the tyres. A backward motion
is imparted to the bearings of the shaft d to withdraw the rolls c from the roll a
when the tyres have been rolled.
By the use of my Invention a great saving of time is effected in the production
of light tyres.
Having stated the nature of my Invention, and described the manner of per-
forming the same,
I declare that I claim,-
The improvement in the manufacture of tyres, which consists in forming several
tyres for wheels from one cylindrical plate or blank and the rolls for rolling the
same, substantially as and for the purpose herein shown and described.
In witness whereof, I, the said William Hassalwood Carmont, have hereunto
set my hand and seal, this Seventeenth day of April, One thousand eight
hundred and eighty two.