Year: 1887

page_text: Date of Application, 17th Feb., 1887
Complete Left, 17th Nov., 1887
Complete Accepted, 27th Dec., 1887
I WILLIAM BOWN, of Summer Lane, Birmingham, in the County of Warwick,
Manufacturer do hereby declare the nature of this invention to be as follows:-
In the manufacture of hollow rims of wheels for velocipedes or carriages it has been
the practice to strengthen the bottom of the rim for receiving the spoke either by
brazing an extra strip of steel throughout the whole length of the rim, or to roll the
strip of steel from which the rim is made with a thickened part extending throughout
the whole length of the strip at the part for receiving the spoke. These methods tend
to unnecessarily increase the weight of the rim.
In carrying my invention into effect the rim is constructed of a strip of steel of one
thickness throughout and when partially formed I secure by rivetting, brazing or
otherwise on the inside of the rim at specified distances apart and where each spoke
would be inserted, suitable shaped discs or pieces of steel, iron or metal bent to the
shape of the rim, which strengthens the rim only at the parts required videlicet,
where the holes have to be drilled for insertion of the spokes or nipples.
By my improvements I produce a much lighter rim and fully maintaining the
strength at the parts required.
G. F. REDFERN,
4, South Street, Finsbury, London,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Rims of Wheels for Velocipedes or Carriages.
I, WILLIAM BOWN, of Summer Lane, Birmingham, in the County of Warwick,
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 :-
Hitherto in the manufacture of hollow rims of wheels for velocipedes or carriages
it has generally been the practice to strengthen the bottom of the rim for receiving
the spoke either by brazing an extra strip of steel throughout the whole length of the
rim, or to roll the strip of steel from which the rim is made with a thickened part
extending throughout the whole length of the strip at the part for receiving the
spoke and to cut holes in the upper surface of the rim on which the india-rubber
tyre is secured for the insertion of the nipples. These methods tend to unnecessarily
increase the weight of the rim of the wheel and to materially weaken the same.
The object of my invention is to remedy these defects and in order to enable the
same to be fully understood I will describe how it can be carried into practice by
reference to the accompanying drawing in which
Figure 1 is an elevation of part of the rim of a velocipede or carriage wheel made
according to my invention, part of the rim being broken away in order to clearly
illustrate my improvements.
Figure 2 is a cross section on line A B of Figure 1.
Similar letters in both the figures indicate similar parts.
In carrying my invention into effect the rim c of the wheel is made from a strip of
steel of an uniform thickness throughout and when partially formed I secure by
rivetting, brazing, or otherwise securing on the inside of the rim c at suitable distances
apart and where each spoke is to be inserted suitably shaped discs or pieces of steel,
iron or other metal, bent to the shape of the rim as shewn in figure 2 which discs or
pieces strengthen the rim only at the parts d, videlicet, where the holes have to be
drilled for the insertion of the spokes or nipples.
By my improvements I produce a much lighter rim and fully maintain the necessary
strength at the parts required.
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 :-
-
The manufacture of rims of wheels for velocipedes or carriages of an uniform
thickness throughout, suitably shaped discs, or pieces of metal being rivetted, brazed
or otherwise secured on the inside of the said rim at the parts where the spokes are
to be inserted substantially as hereinbefore described and illustrated in the accom-
panying drawing.