Improvements in the Construction of Metallic Rims, chiefly applicable to Metallic Wheels for Cycles and other Carriages.
Year: 1892

page_text: Date of Application, 13th Aug., 1892
Complete Specification Left, 14th Sept., 1892-Accepted, 5th Nov., 1892
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Metallic Rims, chiefly applicable
to Metallic Wheels for Cycles and other Carriages.
.
We WILLIAM PILKINGTON, CHARLES THOMAS BISHOP, ANDERSON
BROWNSWORD and ARTHUR PILKINGTON trading as "The Birmingham Climax
Steel Tube Company" Catherine Street Aston near Birmingham do hereby declare
the nature of our said invention to be as follows:-
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Our invention relates to the construction of metallic rims or felloes of that
class known as "hollow rims hitherto these rims have been produced by the
process of drawing or rolling (separate or combined) from the sheet metal until
the desired form is obtained, then the edges are brought together and brazed as a
seam, or the said rims have been drawn or rolled from the "hollow-ingot" until
the desired form is obtained, this latter process is known as, scamless, but both
these methods are costly in production.
We will describe our invention in connection with the manufacture of there
metallic rims.
From a strip of metal (mild steel by preference) of a required width and length,
we first form a groove lengthwise which is to receive the tyre, the side edges are
bent downwards or doubled and the extreme edges then bent inwards, but apart
sufficient to admit a strip constructed by rolling whose edges are bent downwards
at the same process, and when arranged upon the inward edge of the first described
they are rolled over. A cross piece or stay is thus formed and the two parts are
inseparable.
It will be perceived that by our mode increased strength is obtained by means of
the strip as above described, dispensing with all the labour of soldering, rivetting
and other objections. In cross section this rim would shew a semicircle for the
tyre, the side forming the U or V with the strip or stay extending from side
to side.
We thus construct metallic rims for wheels of greater strength and rigidity, to
avoid buckling.
THOS. KENDRICK,
Agent.
COMPLETE SPECIFICATION.
Improvements in the Construction of Metallic Rims, chiefly applicable
to Metallic Wheels for Cycles and other Carriages.
We, WILLIAM PILKINGTON, CHARLES THOMAS BISHOP, ANDERSON
BROWNSWORD, and ARTHUR PILKINGTON, trading as The Birmingham Climax
Steel Tube Company" Catherine Street, Aston, Birmingham, do hereby declare
the nature of our said 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 relates to the construction of metallic rims or felloes, of that class
known as "hollow rims," hitherto these rims have been produced by the process of
drawing or rolling (separate or combined) from the sheet metal until the desired
form is obtained, then the edges are brought together, and brazed as a seam, or
the said rims have been drawn or rolled from the "hollow ingot," until the desired
077

page_text: form is obtained, this latter process is known as seamless, but both these methods,
are costly in production.
We will describe our invention in connection with the manufacture of these
metallic rims.
From a strip of metal (mild steel by preference) of a required width and length.
We first form a groove lengthwise which is to receive the tyre, the side edges are
bent downwards, or doubled and the extreme edges then bent inwards, but apart
sufficient to admit a strip constructed by rolling whose edges are bent downwards
at the same process, and when arranged upon the inward edge of the first described,
they are rolled together. A cross piece or stay is thus formed, and the two parts
are inseparable.
It will be perceived that by our mode increased strength is obtained by means
of the strip as above described, dispensing with all the labour of soldering, rivetting,
and other objections.
In cross section this rim would show a semicircle for the tyre, the sides forming
the "U" or "V" with the strip or stay extending from side to side.
ני
We thus construct metallic rims for wheels of greater strength, and rigidity, to
avoid buckling.
And in order that this our said invention may be more clearly understood; we
will now proceed to describe the same, reference being made to the sheet of
drawings, to the various figures, and letters, marked thereon, (that is to say);
Fig. 1 is a sectional view, showing the first process of forming a metallic rim
(from the strip) for a metallic wheel, chiefly applicable to cycles, constructed
according to our invention.
Fig. 2 is a sectional view as Fig. 1, after the second process, but with the strip
arranged thereto, preparatory to the third or final process.
Fig. 3 is a sectional view of the said strip with bent edges detached.
Fig. 4 is a sectional view, as Fig. 1, and Fig. 2, after the third or final process,
(to clearly illustrate we have shown here the parts c, c, and d, not touching, but by
this operation they are embedded to each other).
The same letters of reference indicate like or corresponding parts throughout all
the figures.
a, Fig. 1 is the form first obtained from a strip of metal provided with the
groove b; for receiving the tyre the edges being bent forming the hooks c. The
second form is obtained as a Fig. 2, c being bent inwards but sufficient to receive
the form d, being arranged thereon. The third form is obtained as a Fig. 4, the
finishing process c, c, and d, interlapping each other and so compressed together as
to be inseparable when applied to its purpose, and a fourfold thickness is thus
formed for receiving the spokes, which is of the greatest advantage for connecting
the same, and for the durability.
The whole is effected by the employment of rolls, and dies specially constructed.
The above being our said invention, we wish to observe in conclusion that we do
not confine ourselves to the precise detail or arrangement of parts as shown on the
accompanying sheet of drawings, as we may modify the same without departing
essentially from the principle of our said invention, as for example, we may form a,
with its edges c, c, bent outwards to receive d, and the process of finishing carried
out as above set forth, which would answer as well.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. In a metallic rim for metallic wheels for cycles and other carriages, constructed
or configured as a, and b, with extreme edges bent inwards forming hooks c, c, for
receiving the form d, and then compressed together, substantially as herein before
set forth and described.
2. In a metallic rim for metallic wheels for cycles and other carriages, the

page_text: general construction, combination, and arrangement of parts, substantially as
herein before described in the foregoing Specification and shown upon the accom-
panying sheet of drawings.
D1 1000
THOS. KENDRICK,
Agent.