Improvements in and relating to Rims of Wheels for Velocipedes and other Road Vehicles and the like.
Year: 1897

page_text: Date of Application, 11th Mar., 1897
Complete Specification Left, 11th Dec., 1897-Accepted, 19th Feb.,
1898
PROVISIONAL SPECIFICATION..
Improvements in and relating to Rims of Wheels for Velocipedes and
other Road Vehicles and the like.
WILLIAM JETHRO STURGESS, 83, Digbeth, Birmingham, Engineer, in the County
of Warwick, do hereby declare the nature of this invention to be as follows:-
:—
Improved rim for road vehicles wheels & the like adapted for pneumatic tyres,
hereinafter described. Hitherto such rims have been constructed of wood or metal,
the latter rolled or pressed into suitable chapes according to the section required
to suit the special tyre to be placed thereon or attached.
By my invention I propose to construct a double or hollow rim having a perfect
intermediary air space, crescent or otherwise.
The said rim when completed must be practically airtight to carry my invention
out effectually, to facilitate this the seat of the rim must be lined outright and
circumvesting same, with rubber, leather, or composition suitable for the purpose.
The seat of the rim must be pierced through in a suitable manner, and also
the annular band or layer of rubber, leather, or composition, as previously men-
tioned, the said piercing to be round or other shape holes as most convenient in
carrying out the principle, the holes of the circumvesting band to lay directly over
the holes in the metal seat of the rim, the one set of holes not to obstruct or hide
the others. On the part of the rim into which the spokes are usually fixed, a valve
constructed for the purpose is fixed, to be used for deflating purposes so to speak,
by attatching a suction pump to the valve the air is to be sucked out of the hollow
intermediary air space, and the tyre sucked on to the rim, by this means it will
be seen that the tyre will be held on by suction, the aid of soap may facilitate the
fixing of the tyre causing same to adhere readily to the seat of the rim.
Dated this 10th day of March 1897.
COMPLETE SPECIFICATION.
Improvements in and relating to Rims of Wheels for Velocipedes and
other Road Vehicles and the like.
I, WILLIAM JETHRO STURGESS, of 87 Digbeth, Birmingham, in the County of
Warwick, Engineer, 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 consists of the improvements hereinafter described in and relating
to rims of wheels for velocipedes and other road vehicles and has for its object to

page_text: construct such rims in a manner so as to be supplied with air for the purpose of
attaching or holding a pneumatic tyre by suction.
In order that my invention may be clearly understood I will describe it by
reference to the accompanying drawings, same letters of reference indicating
similar parts. Figures and show in cross section and plan a crescent shaped
rim A, B showing the air space and D the air depressions formed in the lower
portion of the rim to receive the spoke ends E, F shows the thickness of rubber
cr the like which forms an air tight joint between the spokes and depression D
G represents a slot formed in the upper portion of the rim to receive a projection
formed on the tyre to prevent creeping also allowing for the suction of the tyre
to the rim when the air is withdrawn from the space B by an air pump through the
valve H which may be of ordinary construction. I may cover the surface of the
rim A with a strip I of rubber, leather or the like so as to make an air tight joint
between the rim and tyre. Figures 3 and 4 show in cross section and plan a portion
of a rim of different section, J representing the valve for inflating the tyre.
Figures 5 and 6 show in cross section and plan a portion of a rim similar to
Figures 1 and 2 in which the depressions D are dispensed with the spokes E being
connected to a rib K formed on the rim A the slot G being T shaped instead of
longitudinal. In Figures 3, 4, 5, 6, the tyre is held on the rim in the manner
described at Figures 1 and 2.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed we declare that what
we claim is: —
1. The improvements in and relating to rims of wheels for velocipedes and other
road vehicles whereby a tyre is attached or held to the rim by suction substantially
as described and illustrated in the accompanying drawings.
WILLIAM HENRY BARACLOUGH,
36, Temple Street, Birmingham, Agent for the Applicant.