Improvements in Tyres for Bicycles, Tricycles, and similar Road Vehicles.
Year: 1892

page_text: Date of Application, 24th June, 1892
Complete Specification Left, 23rd Mar., 1893-Accepted, 29th Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in Tyres for Bicycles, Tricycles, and similar Road
Vehicles.
I, IBZAN SAGAR, of Grove House, Eccleston, near Chorley, in the County of
Lancaster, Cotton Mill Manager, do hereby declare the nature of this invention
to be as follows:-
The principal object of this invention is to so construct the periphery of a
pneumatic or other inflated bicycle or other wheel tyre as to render it impervious
to puncture or damage. My improved construction of tyre (hereinafter described)
has also the effect of imparting greater elasticity or cushioning effect to a tyre
of the kind indicated.
In carrying out my said invention I construct what I term the "body part" of
my improved tyre of india-rubber tubing preferably about one eighth of an inch
in thickness and about one and a half to two inches external diameter. Upon
the outer periphery of the said tube (or what would constitute the running surface
of an ordinary tyre) I superpose an additional semi-solid india-rubber ring
(preferably about half the diameter of the tube or body part of the improved
tyre) the said ring having a central hole or air space which provides or gives
a certain amount of elasticity to the said semi-solid ring. The running surface
of the additional ring is semi-circular in cross-section (as in ordinary tyres) but
the back of the said ring runs in solid parallel form to the body part of the.
tyre the additional ring and the said body part being made or moulded together
in the process of manufacture in one piece.
Dated this 24th day of June 1892
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Tyres for Bicycles, Tricycles, and similar Road
Vehicles.
I, IBZAN SAGAR of Grove House, Eccleston, near Chorley, in the County of
Lancaster, Cotton Mill Manager, 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:-
The principal object of this invention is to so construct the periphery of a
pneumatic or other inflated bicycle or other wheel tyre as to render it impervious
to puncture or damage. My improved construction of tyre (hereinafter described)
has also the effect of imparting greater elasticity or cushioning effect to a tyre of
the kind indicated.
In carrying out my said invention I construct what I term the "body part" of
my improved tyre of india-rubber tubing preferably about one eighth of an inch in
thickness and about one and a half to two inches external diameter. Upon the
outer periphery of the said tube (or what would constitute the running surface of
an ordinary tyre) I superpose an additional semi-solid india-rubber ring (preferably
about half the diameter of the tube or body part of the improved tyre) the said
ring having a central hole or air space which provides or gives a certain amount of
elasticity to the said semi-solid ring. The running surface of the additional ring
is semi-circular in cross section (as in ordinary tyres) but the back of the said ring
D27

page_text: runs in solid parallel form to the body part of the tyre the additional ring and the
said body part being made or moulded together in the process of manufacture in
⚫one piece.
My improvements virtually constitute a pneumatic tyre with an outer additional
cushion tyre moulded on to its running surface. The accompanying drawings
illustrate several forms in which the said cushion tyre may be made.
In the several figs. a is the body part of an ordinary form of pneumatic tyre
and the additional semi-solid ring or cushion tyre having a hole or air space
which affords the desired elasticity or resilience. dis an inner air tube of the
ordinary kind and e the wheel rim.
At Figs. 1 to 6 the hole e is round and at Figs. 7 to 12 other forms of hole are
shewn.
Figs. 1, 2, 7 and 8 are sectional views of my improved tyre in which the running
surface of the added cushion tyre is semi-circular in cross section as hereinbefore
mentioned. But it will be obvious that my invention readily lends itself to
modifications of the form or contour of the running surface of the added cushion
tyre such for instance as those shewn at Figs. 3 to 6 and 9 to 12. In practice
have found that the modified forms shewn in the said figs. are preferable to the
semi-circular form under certain conditions that is to say they are advantageous
in preventing side slipping" when travelling over wet or slippery roads or
pavement.
66
I am aware that it is not new to thicken or strengthen the outer periphery
or running surface of pneumatic or other inflated tyres with a view to obviating
the liability to become punctured and I do not lay claim as part of my invention
to such a method as of itself but so far as I know it had not been proposed prior
to my invention to combine with a pneumatic or other inflated tyre a hollow or
cushion tyre moulded on to or in one piece with the outer periphery or running
surface of such tyres.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed 1 declare that what 1
claim is :-
The combination with a pneumatic or other inflated tyre of a hollow or cushion
tyre moulded on to or in one piece with the outer periphery or running surface of
such tyres substantially as hereinbefore described and shewn in the drawings for
the purpose specified.
Dated this 23rd day of March 1893.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.