An Improved Tyre and Rim for Cycles.
Year: 1896

page_text: Date of Application, 6th Feb., 1896
Complete Specification Left, 6th May, 1896-Accepted, 13th June, 1896
PROVISIONAL SPECIFICATION.
An Improved Tyre and Rim for Cycles.
We, GEORGE RODWELL of 58, Stanhope Street, Euston Road, Fitter, and
FRANCIS MAINWARING WESTON of 12, Cranbrook Road, Chiswick, Fitter, do
hereby declare the nature of this invention to be as follows:-
Our invention consists of an improved tyre and rim for cycles possessing in an
eminent degree the desirable qualities of lightness, elasticity, and strength.
The tyre is made of a ring of aluminium of U-shape section, its flanges being
directed inwards and fitted to embrace and to move radially upon the outwardly
directed flanges of the wheel rim which is of the same metal and substantially of
the same sectional form, the two fitting accurately together by their overlapping
side flanges.
The required elasticity is obtained by springs preferably of bow shape enclosed
within and interposed between the rim and the tyre, the springs being secured to.
the rim in such manner as to maintain the proper relative position of the parts.
Dated this 6th day of February 1896.
A. M. & WM. CLARK,
53 Chancery Lane, London, Chartered Patent Agents.
An Improved Tyre and Rim for Cycles.
We, GEORGE RODWELL of 58, Stanhope Street, Euston Road, Fitter, and
FRANCIS MAINWARING WESTON of 12, Cranbrook Road, Chiswick, Fitter, 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 consists of an improved tyre and rim for cycles possessing in an
eminent degree the desirable qualities of lightness, elasticity, and strength.
The tyre and wheel rim are made preferably of aluminium each in the form of a
ring of substantially U-section, the sides or Hauges of the rim being outwardly
directed and those of the tyre being inwardly directed, the sides or flanges of the
one embracing those of the other with freedom for relative motion in the radial
direction of the wheel, the required elasticity being obtained by interposed springs
enclosed within the hollow of the tyre and rim.
The improved tyre is illustrated in the accompanying drawing wherein Figure 1
is a side view of a portion of the rim and tyre partly broken away or in section.
Figure 2 is a cross section.
The wheel rim A is made preferably of aluminium rolled in the form of a
jointless ring of the approximately U-shaped section shewn in Figure 2, the sides
or flanges a a being parallel and outwardly directed from the wheel axis. The
tyre B is likewise preferably of aluminiun rolled of approximately U-section but
nude in two semi-circular segments to admit of applying it upon the rim, the
segments being connected by scarfed or other suitable joints. The sides bb are
also parallel but inwardly directed towards the wheel axis and of such width apart

page_text: as to embrace between them the sides a of the rim and make a close sliding fit
therewith. Care steel springs preferably of the bowed form shewn fixed in
sufficient number at intervals around the rim A to which they are secured by bolts d,
the springs bearing on aluminium blocks D fitting in the hollow of the rim whilst
the springs press outwardly by their elastic bowed portions against the tyre. The
springs may however be of any other bowed shape or be of the spiral coiled form,
their object being to maintain the substantially concentric relation of the tyre to
the rim whilst permitting a slight elastic yielding in the radial direction. The
tyre may be rolled plain at the curved portion or with corrugations or grooves
running in the circumferential direction to prevent side slip.
The segments forming the tyre are connected by scarfed or bevelled joints as
shewn at E secured by bolts e f are stays for preventing the spreading of the
tyre.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that what we
claim is :-
The improved elastic wheel tyre and rim, consisting of metal rings of substantially
U-shaped section opposed and fitting the one on the other, with springs interposed
substantially as and for the purpose specified.
Dated this 5th day of May 1896.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.