Improvements in or relating to Pneumatic Tires for Bioyoles.
Year: 1896

page_text: Date of Application, 31st Dec., 1896
Complete Specification Left, 22nd Apr., 1897-Accepted, 5th June, 1897
PROVISIONAL SPECIFICATION.
Improvements in or relating to Pneumatic Tires for Bioyoles.
YSOBEL WESTERN, 119 Hughson Street South, of the City of Hamilton, in the
County of Wentworth, in the Province. of Ontario, Dominion of Canada,
Gentlewoman, do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in pneumatic tires, and consists of a tire
the outer part of which has annular teeth, or continuous projections, which form
certain annular channels, these annular teeth conform concentrically with the tire,
that is, the part which engages with the ground.
The four central teeth are less prominent and are formed at about an.angle of
about forty-five degrees to the ground, the teeth at either side of these four
continuous teeth, are more prominent, and formed with more acute angles in order
to take a more firm hold of the ground to prevent possible side sliding or slipping
when the wheels are run on a cant, or deviation from the perpendicular.
The objects of my invention being first to provide a bicycle wheel pneumatic
tire which will not side slide under any circumstances no matter how quick or sharp
a curve the ridor may take, second, to provide a bicycle wheel pneumatic tire
which will be proof against punctures, and third, a tire that will be perfectly safe,
easy on the rider and durable.
I attain these objects by the device illustrated in the accompanying drawing in
which:
Figure 1, is a front sectional elevation of my improved tire in position in an
ordinary rim, the inflating tube being left out, as not being deemed necessary to
illustrate.
Figure 2, is a front view of the tire, showing the lower and upper part
thereof.
Similar letters refer to similar parts throughout the several views.
The pneumatic tire is indicated by A, and the bicycle rim by B.
C, are the four annular central teeth, which engage more particularly with the
ground than do the deeper side teeth. These teeth may be slightly rounded, and
the roots very wide and strong in order to give good substantial wearing surface..
The outer side teeth 2, of which two are shown on each side of the four central
teeth are also annular and concentric to the tire, and may be constructed to a more
acute angle than the central teeth, in order to take a more firm hold of the
ground.
It will be observed that when the rider of the bicycle having my improved tire,
makes a quick curve, the wheels will be on a cant, or lean over in such a manner
that the side teeth, previously referred to, will engage with the ground and proveut
any possible side sliding of the wheels, theso acutely formed and continuous
circumferential teeth and the centrally located teeth, form the principal element in
the construction thereof.
Notice also that the teeth on both sides of the tire and next to the four central
teeth C, are somewhat deeper than the central teeth, the next outer ones deepor
still to prevent sliding, when the wheels deviate from the perpendicular as previously
mentioned and set forth.
These teeth as constructed and defined act as a preventative against possible

page_text: puncture, by reason of the tire proper being raised from the ground, this being an
important element.
In this formation and construction of the teeth, as delineated, it will be possible
to use the ordinary class of brako, if made to conform to the continuous teeth, of
this tire, the brake or brakes may be used also as a cleaner, if deemed necessary.
Dated this 16th day of December 1896.
JOHN H. HENDRY,
Agent for Applicant.
YSOBEL WESTERN, 119 Hughson Street South, in the City of Hamilton in the
County of Wentworth, in the Province of Ontario, Dominion of Canada, Lady, 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 :-
My invention relates to improvements in pneumatic tires, and consists of a tire,
the outer part of which has annular teeth or continuous projections, which form
certain annular channels, these annular teeth conform concentrically with the tiro,
and are on the outer part of the tire, that is, the part which engages with the
ground.
The four central teeth are less prominent and are formed at an angle of about
forty-five degrees to the ground, the teeth at either side of these four continuous
teeth, are more prominent, and formed with more acute angles in ordor to take a
more firm hold of the ground to prevent possible side sliding or slipping when the
wheels are run on a cant, or deviation from the porpendicular.
The objects of any invention being first to provide a bicycle wheel pneumatic
tire which will not side slide under any circumstances no matter how quick or sharp
a curve the ridor may take, secoud, to provide a bicycle wheel pneumatic tire
which will be proof against punctures, and third, a tire that will be perfectly safe,
easy on the rider and durable. Refer to drawing left with the Provisional Specification
in which :-
Figure 1, is a front sectional elevation of my improved tire in position in an
ordinary rim, the inflating tube being left out, as not being deemed necessary to
illustrate.
.. Figure 2, is a front view of the tire, showing the lower and upper part
thereof.
Similar letters refer to similar parts throughout the several views.
The pneumatic tire is indicated by A, and the bicycle wheel rim by B.
C, are the four annular central toeth, which engage more particularly with the
ground than do the deeper side teeth. These teeth may be slightly rounded,
and the roots very wide and strong in order to give good substantial wearing
surface.
The outer side teeth 2, of which two are shown on each side of the four central
teeth are also annular and concentric to the tire, and may be constructed' to a more
acute angle than the central teeth, in order to take a moro firm hold of the
ground.
It will be observed that when the rider of the bicycle having my improved tire,
makes a quick curve, the wheels will be on a cant, or lean over in such a manner
that the side teeth, previously referred to, will engage with the ground and prevent
aby possible side sliding of the wheels, these acutely formed and continuous

page_text: circumferential teeth and the centrally located teeth, form the principal element in
the construction thereof.
Notice also that the teeth on both sides of the tire and next to the four central
teeth C, are somewhat deeper than the central teeth, the next outer ones deeper
still to prevent sliding, when the wheels deviate from the perpendicular as previously
mentioned and set forth.
These teeth as constructed and defined, act as a preventative against possible
puncture of the tire by reason of the same being raised from the ground.
In this formation and construction of the teeth, as delineated, it will be possible
to use the ordinary class of brake, if made to conform to the continuous teeth, of
this tire, the brako may be used also as a cleaner, if deemed necessary.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1st. A bicycle wheel pneumatic tire having a series of annular teoth concentric,
with the tire, the central teeth having the least depth and the outer side teeth the
greatest depth, the intermediate teeth gradually conforming thereto on a
circumferential line, substantially desired.
2nd. A pneumatic tire having a number of annular channels circumferential and
concentric with the tire, the outer side teeth having greater depth, or projection,
than the centrally located periphery teeth and the intermediate teeth conforming
thereto, substantially as described.
JOHN H. HENDRY,
Agent.