Improved Means for Preventing Sideslip in Pneumatic and other Tyres.
Year: 1898

page_text: Date of Application, 14th Feb., 1898
Complete Specification Left, 12th Nov., 1898-Accepted, 7th Jan., 1899
FROVISIONAL DE MUITTO
Improved Means for Preventing Sideslip in Pneumatic and other
Tyres.
WILLIAM ALBERT SMELT, 27, High Street, Kingston on Thames, Furniture Manu-
facturer, do hereby declare the nature of this invention to be as follows:-
On each side of cycle tyre I fix or mould in the tyre transverse projections set
at angles of about 45 which I find to give best result as tyres clean them.
selves being at their full advantage. The principal feature of this invention is to
prevent "side slip."
I am aware that many devices are in existence to prevent side slip, but on
account of these becoming clogged they fail to do what is expected of them.
Dated this 14th day of February 1898.
Improved Means for Preventing Sideslip in Pneumatic and other
Tyres.
I, WILLIAM ALBERT SMELT, of 27, High Street, Kingston on Thames, in the
County of Surrey, Gentleman, 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 :—
65
The object of my invention is to provide a tyre for cycles or other wheeled
vehicles which shall obviate the liability to what is known as sideslip" whilst
travelling upon greasy surfaces or whilst turning corners, and in carrying my inven-
tion into effect I prefer to mould in any manner well known to the trade upon the
rubber cover of a pneumatic or other tyre suitably shaped projections placed at an
angle to the periphery of the wheel of about 45 degrees although I may find it
desirable to place them at other angle or angles. These projections I cause to be
moulded on the cover or tyre at each side thereof that is to say not on the tread, so
that whilst a cycle or other vehicle fitted with my improved device is in an upright
position the projections are not in contact with the surface upon which the vehicle
is travelling it is only when the vehicle makes an angle to the surface upon which
it is travelling that the projections on the side of the cover or tyre come into use.
It will be seen that when a vehicle fitted with my improved device is in the act of
"sideslipping" upon a greasy surface or when turning a corner the projections on
that side of the cover or tyre in the direction in which the vehicle is in danger of
falling come into contact with the surface at an acute angle thus securing to the
wheel a firm grip and so preventing a fall.

page_text: I am well aware that numerous devices are in existance to obviate the dangers of
sideslip but hitherto these devices have failed owing to the liability to clog. By
my invention the peculiar construction as herein shown and described renders the
cover or tyre less likely to become clogged.
Although I have for purposes of illustration described my invention as applied to
pneumatic tyres for cycles I may adapt it to any tyre or wheel for vehicles.
Referring to the accompanying drawings in which like letters indicate corre-
sponding parts.
Figure 1 shews a plan of a portion of an outer cover for a pneumatic tyre con-
structed in accordance with my said invention.
Figure 2 is a section on line a-b of Fig 1.
A represents a portion of an outer cover for a pneumatic tyre B the projections
placed on each side of the tread C.
Although I have shewn the projections B as being straight and at an angle of
45 degrees to the periphery of the wheel, I may cause them to be curved in shape
and affixed at other angles.
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 :-
In an outer cover or tyre adapted for use with a pneumatic or other tyre for cycles
or other wheeled vehicles the employment of suitable projections moulded or other-
wise affixed on each side of the tread at such an angle or in such a manner as to
afford a grip upon the surface upon which the vehicle is being driven when in
danger of slipping substantially as herein before described and illustrated by the
accompanying drawings.
Dated this 12th day of November 1898.