Improvements relating to Elastic Tyres and the Rims of Wheels therefor.
Year: 1893

page_text: Date of Application, 6th June, 1893
Complete Specification Left, 2nd Nov., 1893-Accepted, 9th Dec., 1893
PROVISIONAL SPECIFICATION.
Improvements relating to Elastic Tyres and the Rims of Wheels
therefor.
I, PRESTON DAVIES, of Town Mead Works, Wandsworth Bridge Road,
Fulham, in the County of Middlesex, Tyre Manufacturer, do hereby declare the
nature of this invention to be as follows:-
This invention has reference to pneumatic and like tyres and to the rims of
wheels intended for use in connection therewith.
My invention is applicable more especially to vehicle wheels of the heavier
classes and consists in making a metallic rim or tyre of U section with the addition
of side flanges which project sufficiently beyond the elastic tyre to protect it from
injury from contact with curb stones and the like.
The outer casing or jacket is held in the trough of the rim by means of a wire or
equivalent rope inserted in the edges of such jacket and free to move within it and
having overlapping ends for the purpose of rendering its circumference capable of
variation as in the Specification of Letters Patent granted to me and numbered
16,973 of 1891. One end of each wire can be affixed to the rim and the other
carried through the rim and drawn taut by means of a winch provided with pawl
and ratchet which winch may be either permanently or detachably secured to that
side of the rim which is nearest the hub of the wheel.
Dated this 5th day of June 1893.
PRESTON DAVIES.
COMPLETE SPECIFICATION.
Improvements relating to Elastic Tyres and the Rims of Wheels
therefor.
I, PRESTON DAVIES, of Townmead Works, Wandsworth Bridge Road,
Fulham, in the County of Middlesex, Tyre Manufacturer, 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 :-
This invention has reference to pneumatic and like tyres and to the rims of
wheels intended for use in connection therewith.
My invention is in part applicable more especially to vehicle wheels of the
heavier classes and consists in making a metallic rim or tyre of U-section with the
addition of side flanges which project sufficiently beyond the elastic tyre which it
is designed to contain to protect it at its sides from injury from contact with curb-
stones and the like. My invention further consists in providing a secure means of
attaching and ready means of detaching the outer casing or "jacket" of an
inflatable tyre to and from the rim of a wheel.
I attain these objects by the means illustrated in the accompanying drawings, in
which-
Figure 1 is a cross-sectional view of the wheel rim.
Figure 2 is an elevation of a tyre and rim of a velocipede wheel showing the
securing mechanism.
Figure 3 is a cross-sectional view of such mechanism, and
Figure 4 is a detail of construction.
Referring to the drawings, Fig. 1 shows the metallic rim A with outwardly
projecting Hanges a, a, which rim is designed to contain an inflatable tyre. The
projecting flanges a, a form a guard to protect the sides of the tyre from injury.
Price 8d 1

page_text: Referring to Figures 2, 3, and 4, the outer casing or jacket B is secured in the
trough of the rim C by means of two wire or equivalent ropes D one inserted in
each edge of such jacket either one of which is or both of which are free to move
within it and have or has overlapping ends for the purpose of rendering the
circumference capable of variation as in the Specification of Letters Patent
granted to me and numbered 16,973 of 1891. One edge of the jacket may be
permanently secured to the rim or both may be, detachably secured as hereinafter
described. When both edges are detachably secured a securing mechanism such
as herein described is used in connection with each edge and in that case the two
securing mechanisms required are preferably disposed at opposite points of the
circumference of the wheel rim. One end of each detachable wire, which is
enlarged or knotted, is affixed to the rim by passing it through a metallic key-
plate E (shown in plan in Fig. 4) suitably affixed to the rim at the centre of its
trough. The other end of the wire is carried through an opening in the rim.
Over this opening in the rim is secured a metallic casing F containing a winch or
roller-pulley G. This is provided with a number of holes Suitable means are
provided for attaching the last-mentioned end of the wire to the circumference of
the winch or roller-pulley. The drawings show a hole g' for this purpose. The
winch or roller-pulley has a square axial opening 92 through which a suitably
shaped spindle is passed taking its bearings in the casing F, the one end f' being
secured by a lock-nut f2. The other bearing is sufficiently large to permit of
the passage of the square central portion f, and the remaining end of the spindle
is squared to receive a key as at . The end of the wire may be either
permanently or detachably secured to the winch or roller-pulley. It is shown in
9.
the drawings passed through the opening g' and knotted or enlarged.
The wire is tightened and. the "jacket" or outer casing secured to the rim of the
wheel by turning the winch or roller-pulley G by means of a key fitting its keyed
spindle and is prevented from resiling by the pin fe passed through one of the
holes g and two similar openings h, h' opposite thereto provided in the casing F.
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
1. In a wheel, the combination, with an inflatable tyre, of a metallic rim of
channel or U-section provided with outwardly projecting flanges such as a, a in
Figure 1 serving to protect the sides of such tyre from injury substantially as set
forth.
2. As a means of detachably securing an inflatable tyre to the rim of a wheel,
the combination of the winch or roller-pulley G, contained within the metallic
casing F and taking bearings thereon, with the pin for its equivalent, together
operating to take up the slack of the wire or equivalent rope D and to prevent
resiling, substantially as set forth.
Dated this 2nd day of November 1893.
A. F. SPOONER,
124, Chancery Lane, W.C., Agent for the Applicant.