IMPROVEMENTS IN THE MANUFACTURE OF WHEEL TYRES
Year: 1882

page_text: LETTERS PATENT to Alfred Charles Guerrier of Fulham in the County of
Middlesex for an invention of "IMPROVEMENTS IN THE MANUFACTURE OF
WHEEL TYRES."
"
PROVISIONAL SPECIFICATION left by the said Alfred Charles Guerrier
at the Office of the Commissioners of Patents on the 6th July 1882.
ALFRED CHARLES GUERRIER of Fulham in the County of Middlesex
"IMPROVEMENTS IN THE MANUFACTURE OF WHEEL TYRES,"
In manufacturing wheel tyres it is usual to bend a bar which has been previously
cut the requisite length, and then weld the two ends together. The welding
operation is one of considerable importance, and potwithstanding the greatest
amount of care, the result is often unsatisfactory, and the tyre is extremely liable
to break at the joint.
Now the object of the present invention is to avoid the inconveniences arising
from the manufacture of wheel tyres as described.
To this end I cut from a plate of metal, which has been previously rolled to a
thickness corresponding to a width of the tyre required; a square portion, the
dimensions of which will slightly exceed the diameter, of the intended tyre.
The square plate thus formed is then reduced to as nearly a circular shape as
possible by removing the corners and" angles, and it is then turned down to a
true circle.
The central portion of the plate is then removed so as to leave a tyre of the
required thickness.
In removing the central portion, I prefer to turn it out either in one piece or in
segments. When removed in segments, I prefer to divide it into four segments and
alot the plate at right angles, and then remove each portion.
•
By forming the tyres for wheels as above described, I obtain a perfectly true.
weldless tyre of the exact size required. The tyres may be shrunk on to the wheels
in the usual way, or secured thereto in any other convenient manner.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Alfred Charles Guerrier in the Great Seal Patent Office on the
5th January 1883.
ALFRED CHARLES GUERRIER of Fulham in the County of Middlesex
" IMPROVEMENTS IN THE MANUFACTURE OF WHEEL TYRES
"
In the manufacture of wheel tyres for road vehicles it is usual to cut from a bar
of metal a portion of a sufficient length for the tyre, allowing for the overlap to
form the weld.-The length of bar is bent round and the ends are welded together
to form the tyre. The welding operation is one of considerable importance and
notwithstanding the greatest amount of care it often happens that the tyre when
completed is too large or too small for the purpose required, and another tyre has
to be made, thus causing delay as well as loss of labour. The weld also is often
unsatisfactory and has to be cut and rewelded.
Now the object of the present Invention is to avoid the inconveniences arising
from manufacturing wheel tyres in this manner.
To this end I cut from a plate of suitable metal which has been rolled or
hammered to a thickness corresponding to the width of tyre required a square
portion the dimensions of which should slightly exceed the diameter of the
intended tyre.
The s
e square plate thus formed I conveniently secure upon a suitable table or face
plate which is caused to rotate slowly under a turning or other suitable tool by
means of which the angles and other superfluous parts of the metal are first
removed leaving a circular plate from which several tyres of varying diameters
may be cut..
In the accompanying drawing, Fig: 1 is a plan view of a plate shewing how a
number of tyres can be cut therefrom, and Fig: 2 is a cross section of the plate-
Figures 3 and 4 are respectively a side elevation and cross section of a completed
tyre..
A is a square plate from which the tyres are to be cut-a are the grooves or slots
formed by the turning or other tool, and b are the tyres which are thus cut from
the plate. It will be evident that although only five tyres are shewn in the
drawing as being cut from the plate the number may be increased and tyres of
any desired thickness may be obtained by a simple adjustment of the tool.
The tyres for road vehicles thus formed will be perfectly true and weldless and
also of the exact dimensions required, and they may be shrunk onto the wheels in
the usual way or secured thereto in any other convenient manner.
Having now described my Invention of "Improvements in the manufacture of
wheel tyres" and explained the manner of carrying the same into effect I wish it
to be understood that I claim.
Manufacturing wheel tyres for road vehicles from plates of metal substantially
as herein described such plates having first been. rolled or hammered to a thickness
corresponding to the width of the tyres it is desired to make.
L
In witness whereof I the said Alfred Charles Guerrier have hereunto set
my hand and seal. the 4th day of January in the year of our Lord One
thousand eight hundred and eighty three
.