IMPROVEMENTS IN THE MANUFACTURE OF GROOVED TYRES FOR WHEELS
Year: 1884

page_text: I ROBERT KEARSLEY of Hightown near Manchester in the County of Lancaster
Traveller, do hereby declare the nature of my Invention for "IMPROVEMENTS IN
THE MANUFACTURE OF GROOVED TYRES FOR WHEELS," to be as follows:-
The object of this invention is to produce by the rolling process a channel
grooved tyre with an annular rib or ribs on each side of the channel or groove
near the bottom such rib or ribs being of a barb or wedge-shape and designed to
keep the india rubber or other elastic substance forming the noiseless tyre securely
in position.
In performing my invention I take a piece of Iron bar or Steel the necessary
size and pass it through a series of suitable grooved rollers which produce a flat
bar the exact size of the base and the two sides of my section and with two
annular ribs barbed or wedged shaped clearly rolled on the flat surface of the bar.
I then pass such bar through another set of rollers which roll the base and slightly
raise and turn up the sides of the channel groove after which I pass the partially
formed channel through the finishing rollers which complete the channel groove by
turning up or rolling the sides at right angles to the base.
Instead of there being three sets of rollers as aforesaid all the necessary grooves
may be formed in a pair of rollers. Or instead of passing through the third set
of rollers I complete the turning up of the sides by passing the bar through a
tapered die which gradually contracts until it enters a gauge or die the exact size
of section required.
I also roll a similar section with annular ribs but with a round base for
velocipedes and other similar vehicles and which permits the india rubber tyre to
be reversed when worn.
The tyres are made of several sizes to suit large or small wheels and must be
bent into the circular form to suit the diameter of the wheels and afterwards
welded together at their extremities or they may be rolled in the circular or
weldless form,
1
11
Th 1984
JOHN G. WILSON,
Agent for Applicant.

page_text: COMPLETE SPECIFICATION.
I ROBERT KEARSLEY of Hightown near Manchester in the County of Lancaster
Traveller do hereby declare the nature of my invention of "IMPROVEMENTS IN
THE MANUFACTURE OF GROOVED TYRES FOR WHEELS" and in what manner the
same is to be performed to be particularly described and ascertained in and by
the following statement :—
The object of this invention is to produce by the rolling process a channel
grooved tyre with an annular rib or ribs on each side of the channel or groove
near the bottom such rib or ribs being of a barb or wedge shape and designed to
keep the india rubber or other elastic substance forming the noiseless tyre securely
in position.
On the accompanying drawing Fig 1 illustrates a sectional view of a channel
grooved tyre to be produced by the rolling process in accordance with this invention
and Fig 2 a sectional view of so much of a pair of rollers as is necessary to
explain the operation of my invention and shows the bar in various stages of its
manufacture into a channeled tyre. I take a piece of iron bar or steel and having
heated it to the required temperature I pass it successively through the grooves a b
c d and e formed in the roller fand thus by the pressure of the upper roller fl
I produce the requisite rib or ribs of a barb or wedge shape as marked g in Fig 1
on the one side of the bar-and suitable projections on the opposite side of the
bar to ensure the corners turning up sharp.
I then pass such bar through another groove h which rolls the base and slightly
raises or turns up the sides of the channel groove-after which I pass the partially
formed channel through the finishing groove i which completes the channel groove
by turning up or rolling the sides at right angles to the base the projections
herein before described serving to fill up the corners or angles, which would
otherwise be rounded off. Instead of employing a single set of rollers as just
described the rolling may be effected in a series of suitably grooved rollers, and
instead of passing through the final groove as aforesaid I complete the turning up
of the sides by passing the bar through a tapered die which gradually contracts,
until it enters a gauge or die the exact size of section required. I also roll a
similar section with annular ribs but with a round base for velocipedes and other
similar vehicles and which permits the india-rubber tyre to be reversed when worn.
The tyres are made of several sizes to suit large or small wheels and must be
bent into the circular form to suit the diameter of the wheels and afterwards
welded together at their extremities or they may be rolled in the circular or
weldless form.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is I wish it to be understood that I make no claim in the present
application to the tyre itself but what I do claim is:-
1st The manufacture of tyres for wheels by the rolling process substantially as
herein before described and illustrated on the accompanying drawings.
2nd The method of and machinery for producing a rib or ribs on the inner side
of a channel grooved tyre substantially as hereinbefore described and illustrated on
the accompanying drawings.
"
1004