An Improved Vehicle Wheel Rim.
Year: 1897

page_text: An Improved Vehicle Wheel Rim.
I, TIMOTHY SHEPHERD, of Kenilworth, Oakfield Road, Birmingham, in the
County of Warwick, Engineer, do hereby declare the nature of this invention
to be as follows:-
My invention relates to wheel rims intended more especially for the reception
of pneumatic tyres and has for its object to provide, in a better and more
economical manner, a rim which will, in itself, serve to retain the tyre, upon
inflation, in position thereon and without necessitating the provision of any
special fastening or securing means upon the tyre.
According to my invention the metallic strip from which the rim is rolled
or produced is provided at its edges with a number of serrations. The strip
thus made is rolled or formed to the required shape in transverse section, the
edges being turned over into the concavity of the rim so that the serrations are
towards each other; the arrangement may be such that the points or teeth are
raised or inclined slightly from the bed of the rim.
Upon a pneumatic tyre or cover being placed in position upon the rim and
inflated, the said points or teeth will engage with the material of the tyre or cover
and the same will be securely held to the rim.
By constructing a rim as described a larger number of points or teeth can
be obtained than is possible when points or teeth are cut and raised from the
body of the rim and, moreover, the rim can be sectioned in the ordinary rollers
without fear of flattening the said points or teeth.
Dated this 5th day of October 1897.
A. F. SPOONER,
323, High Holborn, London,
Agent for the Applicant.
I, TIMOTHY SHEPHERD, of Kenilworth, Oakfield Road, 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:-
My invention relates to wheel rims intended more especially for the reception
of pneumatic tyres and has for its object to provide, in a better and more
economical manner, a rim which will, in itself, serve to retain the tyre, upon
07

page_text: inflation, in position thereon and without necessitating the provision of any
special fastening or securing means upon the tyre.
In the accompanying drawings,
Figure 1 shows the metallic strip from which the rim is rolled or produced,
and
Figure 2 shows a portion of the completely made rim.
According to my invention the metallic strip from which the rim a is rolled
or produced is provided at its edges with a number of serrations f¹. The strip
thus made is rolled or formed to the required shape in transverse section, the
edges being turned or bent over into the concavity of the rim so that the serra-
tions are towards each other as shown in Figure 2; the arrangement may be
such that the points or teeth are raised or inclined slightly from the bed of the
rim.
Upon a pneumatic tyre or cover being placed in position upon the rim and
inflated, the said points or teeth will engage with the material of the tyre or cover
and the same will be securely held to the rim.
By constructing a rim as described, a larger number of points or teeth can
be obtained than is possible when points or teeth are cut and raised from the
body of the rim, and, moreover, the rim can be sectioned in the ordinary rollers
without fear of flattening the said points or teeth.
Obviously, when required for use with a wooden rim, or with an already
formed rim of inappropriate section, a strip made with serrations as above
described and with the edges bent over so that the serrations are towards each
other may be placed within such rim.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is;-
A vehicle wheel rim composed of a strip having serrations such as f¹ at its
edges, such edges being turned or bent over so that the serrations are towards each
other substantially as set forth.