Improvements in the Tyres and Rims of Wheels for Vehicles.
Year: 1893

page_text: Date of Application, 5th June, 1893
Complete Specification Left, 5th Mar., 1891-Accepted, 28th Apr., 1894
PROVISIONAL SPECIFICATION.
Improvements in the Tyres and Rims of Wheels for Vehicles.
We, HENRY IVAN GOULD, of Falmouth Road, Engineer and JAMES WILLIAM
BENNETT of 41 Eastcheap, Advertisement Contractor, both in the County of
London, do hereby declare the nature of this invention to be as follows:-
:-
Our invention has for its objects certain improvements in the construction of
wheel rims for holding an inflated or hollow elastic tyre in such a manner that the
dilation of said tyre by compression when in use does not cause it to become worn
or cut by impinging upon the rim, and also the provision of a protective covering,
which prevents puncture, and increases the durability of the tyre and which may be
easily removed and replaced at a trifling cost when worn out.
In carrying our invention into effect, we construct the rim so as to present a
rectangular channel or groove externally, the bottom corners of which may or may
not be rounded. An ordinary inflated, or hollow tyre of circular, or approximately
circular cross section is laid in said groove, and may be slightly attached by glue
or other adhesive material to the rim at the bottom leaving the sides free. Thus,
when no pressure is imposed upon the wheel, there is a clear space upon each side
of the centre where the circular tyre touches, and is attached to the flat bottom of
the grooved rim, since the circle is placed within a rectangle. A stout protective
sheath or covering, of pure india-rubber, or any suitable composition similar to
linoleum, kamptulicon, or the like, encloses the outer exposed surface of the tyre, and
takes the wear of traction without diminishing the elasticity thereof. At the edges,
with a suitable intervening space between each, we provide eyelet holes, so that the
sheath may be laced over the tyre by means of a lace or laces passing over the rim
between the spokes of the wheel, drawing said edges together. We may use pins,
hooks or the like, attached to, or formed upon the rim aforesaid in lieu of the lacing
device above referred to.
Under compression, the dilation of the inflated or hollow tyre tends to cause it
to expand freely within the spaces left between the sides of the channel of the rim
and said tyre, thus obviating all risks of deterioration or leakage due to friction
or abrasion, as obtains in the case of such tyres when fitted within a rim of semi-
circular cross-section. The protective sheath or covering effectually prevents
puncture by ordinary stones or other obstacles, and also wear and tear, while it may
be readily removed and replaced when necessary.
Dated this 3rd day of June 1893.
H. 1. GOULD.
J. W. BENNETT.
COMPLETE SPECIFICATION.
Improvements in the Tyres and Rims of Wheels for Vehicles.
We, HENRY IVAN GOULD, of 115 Falmouth Road Engineer, and JAMES
WILLIAM BENNETT, of 41 Eastcheap Advertisement Contractor, both of the
County of London, 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 :-
Our invention has for its objects certain improvements in the construction of
wheel rims for holding an inflated or hollow elastic tyre, in such a manner that the
dilation of said tyre by compression when in use does not cause it to become worn
out, or cut, by impinging upon the rim, and also the provision of a protective
ID 1

page_text: covering which prevents puncture and increases the durability of the tyre and
which may be easily removed and replaced at a trifling cost when worn out.
In order that our invention may be the better understood, we have appended the
accompanying sheet of drawings, in which the single figure illustrates the device
by shewing part of a wheel in perspective, with the rim and tyre in section.
Referring to this drawing, in carrying our invention into effect, we construct a
rim A, so
as to present a rectangular channel in cross section, the bottom
corners of which may be rounded as shewn. An ordinary inflated or hollow
tyre B, of circular or approximately circular cross section is laid in said groove in
such a manner that the centre of the sectional circle is well past the lips of the
channelled rim when the tyre is in position. Any adhesive compound may be used
to secure the bottom of the tyre to the groove, the sides always being left free for
vertical movement when running. Thus, when no pressure is imposed upon the wheel,
there is a clear space upon each side of the centre where the circular tyre touches and
is attached to the flat bottom of the grooved rim, A, since said circle is placed within
a rectangle. We may thicken the tread, or wearing portion of the tyre C, or
may provide a protective covering, which may be of any suitable material for
resisting the wear and tear of traction without diminishing the elasticity thereof.
At the edges, with a suitable intervening space between each, we may provide
eyelet holes, so that the protective sheath may be laced over the tyre B by means
of a lace or laces passing over the rim A between the spokes of the wheel, drawing
said edges together. We may use pins, hooks, or the like, attached to or formed
upon the rim aforesaid in lieu of the lacing device above referred to. But in each
case of adoption we prefer that the protective sheath or surface shall form part of,
or be attached to, the tyre itself so that it is not dependent upon any attachment
to the rim A.
We
Under compression, the dilation of the inflated or hollow tyre B, tends to
cause it to expand freely within the rectangular spaces left at b. 6 between the
rim A and said tyre B, thus allowing free expansion without abrasion due to
bulging over the edges a a¹ of the rim, which are rounded to prevent friction.
find in practice, that hollow inflated tyres are generally punctured by abrasion
against the edges of the rim, but in the case of our invention, the expansion of said
tyre under compression is fully compensated by the corners b b¹.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is,
First. In an improved rim and tyre for wheels of vehicles, the combination of a
rim of rectangular cross section with an inflated or hollow tyre of approximately
circular cross section substantially as herein described and shewn by the appended
drawings.
Second. In an improved rim and tyre for wheels of vehicles, the combination of
a hollow tyre with a rim of approximately rectangular cross-section, with a
protective sheath or covering C, substantially as herein described and shewn by the
appended drawings.
Third. In an improved rim and tyre for wheels of vehicles, the combination of a
tyre of circular cross section, with a rim of approximately rectangular cross section
and a moveable protective covering, laced to said rim, substantially as herein
described, with reference to the appended drawings.
Fourth. In an improved rim and tyre for wheels of vehicles the combination of a
circular tyre with a rectangular grooved tyre, with rounded edges substantially as
and for the purposes herein set forth, and shewn by the appended drawings.
FREDK. WALKER,
73, St. Stephen's Road, Upton Park, London, E.,
Agent for the Applicants.