Improvements in or relating to Elastic Tyres for the Wheels of Vehicles.
Year: 1899

page_text: Date of Application, 28th Mar., 1899-Accepted, 20th May, 1899
CORDELE STRIFICATION.
Improvements in or relating to Elastic Tyres for the Wheels
of Vehicles.
We, JAMES COOMBER, of No. 195, Lake Street, JAMES WILSON, of No. 26.
Randolph Street, West, both in the City of Chicago, County of Cook, State of
Illinois, and FREDERICK LEE NORTON, of Racine, County of Racine, State of
Wisconsin, all in the United States of America, Gentlemen, do hereby declare
the nature of this invention, and in what manner the same is to be performed,
to be particularly described and ascertained, in and by the following statement:-
It has heretofore been common practice to construct a vehicle tire of a rubber
or elastic body or strip fitted within a channelled or flanged rim. It has also
been customary to compress a rubber strip somewhat greater in length than the
periphery of the rim to attain the desired compactness, and to provide a retaining
band extending longitudinally through the rubber body for securing the rubber
body in such compressed state within the rim. In such vehicle tire the bending
of the band and compression of the rubber against the rim when in use, and
the creeping or rolling of the rubber when subjected to lateral strains soon caused
the band to wear the rubber by abrasion and more particularly that portion of
the rubber between the retaining band and the rim. The result of such wear
was to cause the rubber body to become loose on the rim and the tire would then
soon become worn too much for further use. Obviously such vehicle tires did
not possess the desired durability.
An object of the present invention is to provide a vehicle tire which is simple
and inexpensive of construction and in which all danger of the wearing of the
rubber by the retaining band is avoided. And a further object of the invention
is to provide an improved construction of vehicle tire in which the rubber-body
or strip is securely held in the rim.
The invention consists primarily in providing an elastic or rubber body or
strip with a series of cross-stays which are independent of the retaining band and
which permit the rubber strip to be uniformly compressed around the rim and
along the retaining band. The invention further consists in the novel features
of construction hereinafter described, illustrated in the accompanying drawing
and more particularly defined by claims at the conclusion hereof.
In the drawings: Fig. 1 is a perspective view of a portion of a vehicle tire
embodying one form of the invention. Fig. 2 is a central longitudinal section
thereof and Fig. 3 is a transverse section hereof.
A designates a rim having flanges a bent outwardly to form a channel wherein
a rubber or elastic strip or body B is seated. A longitudinal bore or aperture b
is formed in the elastic strip 13 wherethrough a retaining band C is extended.
In the rubber strip between the retaining band C and rim A and adjacent the
retaining-band. a series of cross-stays 1) are placed at suitable intervals. Cross-
stays Dare independent of the retaining band and may be embedded in the rubber
or placed in transverse holes formed therein. Cross-stays D are placed within
the rubber strip before the rubber is compressed along the retaining band and

page_text: before the rubber strip is placed within the rim, and these stays are independent
of the retaining band to permit the rubber strip to be compressed along the
retaining band before the elastic strip is applied to the rim. These cross-stays
are also independent of each other so as to permit the compression of the rubber
by the retaining band to be uniform throughout. The cross-stays are also ex-
tended substantially between the rim flanges a.
In practice, a strip of rubber or other elastic material is cut of somewhat
greater length than the periphery of the rim. Such strip is provided with the
cross-stays and a longitudinal bore through which the retaining band is drawn or
extended. The strip is then compressed and bent to fit the rim and the ends
of the retaining band are then secured together to secure the rubber strip in the
rim in such compressed state.
It will be manifest from the foregoing description that the cross-stays are
independent of the retaining band and thus permit the compression of the rubber
along the retaining band, and when the rubber is compressed in the rim, the
pressure of the retaining band is distributed by the cross-stays throughout the
width of the rubber strip, and the retaining-band thus firmly retains the rubber
strip through its entire width seated in the rim. Such distribution of pressure
rigidly secures the rubber to the rim and prevents the rubber from becoming
worn around the hore and particularly where it contacts with the retaining band.
It will also be seen that the cross-stays will not interfere with the vertical
yielding or compression of the rubber when obstructions are encountered. Further-
more, by extending the cross-stays substantially between the rim flanges
the cross-stays are confined against end or lateral play between the
rim flanges and thus serve to further secure the rubber strip against lateral
creeping or rolling when lateral strains are applied. The retaining band secures
the cross stays against outward movement. Thus it will be seen that the rubber
or elastic strip is securely held against vertical and lateral movement in the
rim. A further advantage is that in many instances where heretofore a plurality
of bands was necessary, a single band will suffice.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
1. In a vehicle tire the combination with a rim having side flanges, of an
elastic strip seated within said rim and between said flanges, and having a longi-
tudinal bore therein, a retaining band extending through said bore, and a series
of independent cross-stays in the elastic strip and independent of the retaining
band.
2. In a vehicle tire, the combination with a rim having side flanges, of an
clastic strip seated within the rim and between the side flanges and having a
central longitudinal bore therein, of a retaining band extending through said
bore, and a series of independent cross-stays and independent of the retaining band,
and extending substantially between the rim flanges.
3. In a vehicle tire, the combination with a rim having side flanges, of an
elastic strip seated within said rim and between said flanges, and having a longi-
tudinal bore therein, a retaining band extending through said bore, and a series
of cross stays in the elastic strip independent of each other and independent of
the retaining band, and extending substantially between said rim flanges.
4. In a vehicle tire, the combination with a rim having side flanges, of an
elastic strip seated within said rim and between said flanges, and having a longi-
tudinal bore therein, a retaining band extending through said bore, and a
series of cross stays independent of the band and independent of each other and
transversely disposed intermediate the rim and band and having their terminals
projected beyond the band and in close proximity to the rim flanges.
5. In a vehicle tire, the combination with a rim having side flanges, of an
elastic strip seated within said rim and between said flanges, and having a longi-
5

page_text: tudinal bore therein, a retaining band extending through said bore, and a series
of cross stays independent of the band and independent of each other and ex-
tending through the elastic strip.
Dated CAIS HIT of alaren A.D. P.
JAMES COOMBER.
JAMES WILSON.
FREDERICK LEE NORTON.
Haseltine, Lake & Co.,
45, Southampton, Buildings, London, W.C.,
Agents for the Applicants.