Improvements in or connected with the Manufacture of Hollow or Tubular Junctionless or Unbrazed Wheel Rims for Bicycles, Tricycles, and Velocipedes of All Kinds, and other Wheeled Vehicles.
Year: 1897

page_text: Date of Application, 3rd Apr., 1897-Accepted, 3rd July, 1897
COMPLETE SPECIFICATION.
Improvements in or connected with the Manufacture of Hollow or
Tubular Junctionless or Unbrazed Wheel Rims for Bicycles,
Tricycles, and Velocipedes of All Kinds, and other Wheeled
Vehicles.
We, ALBERT RUSSELL SMITH, and, MATTHEW SIDNEY SMITH, both of 22, Salcott Road,
Battersea, Surrey, Gentlemen, 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:-
Our invention relates to the process or combination of processes hereinafter
described for manufacturing from iron, steel or other suitable material or substance,
hollow or tubular junctionless or unbrazed rims for velocipedes and other
wheeled vehicles, the object being to simplify the manufacture by reducing to a
minimum the number of operations necessary to complete a finished rim, thus
lessening the cost of production, and at the same time producing a rim that shall
be equal, if not superior to those now upon the market.
In carrying our invention into practical effect each hollow or tubular junctionless
or unbrazed rim is formed either from a hoop or strip of suitable metal or material
and where a strip is employed it has first to be welded together to form a hoop.
This hoop is then rolled out to the required thickness by a pair of rollers to a
diameter equal to the smallest diameter of the finished rim, and by a further series
of rolling operations the hoop or band thus formed is given the required shape of the
finished rim, the edges of the said hoop or band being clipped or fastened together
as hereinafter more fully described.
In order that our invention may be more fully understood, we will now proceed to
describe same with reference to the accompanying drawings in which Fig. I is a front
elevation of an internal split roll or chuck suitable for use in connection with the
manufacture of hollow or tubular junctionless or unbrazed rims, Fig. 2 being a
vertical section through same.
Figs. 3 to 26 are detail sectional views illustrating the various process in the
manufacture.
Referring to the first portion of our invention which is illustrated in Figs. 3 to 8
of the accompanying drawings, Fig. 3 represents in section the band or hoop a in
position in the internal split roller of chuck A, the ring b being a detachable portion
of same. The presser or roll c which is mounted upon a suitable spindle g
(Figs. 1 and 2) and operated in any convenient manner is then brought to bear upon
the band or hoop a thus forming or giving it the trough shaped section shown in
Fig. 4. The roller c is then removed and the split roller d is brought to bear
against and presses inwards the edges has shown (Fig. 5) and which brings them
together as illustrated in Fig. 6. The roller d is left in position while the two
smaller rollers e, e, (Fig. 7) working from a common centre clip the edges to the
finished form shown in Fig. 8.
Instead of making the rim with a clipped joint as shown in Fig. 8 it may be made
with a folded joint the process for which is illustrated in Figs. 9 to 14 of the
accompanying drawings.

page_text: According to this form of our invention the band or hoop a is placed in position
in the internal split roll or chuck A (Fig. 9) the ring b being a detachable portion
of same. The presser or roller c (Figs. 9 and 10) is then brought to bear upon the
band or hoop a thus forming or giving it a trough shaped section as shown in
Fig. 10. The roller c is then removed and the split roller d is brought to bear upon
the edges h (Fig. 11) pressing them inwards thus closing the rim and partly
closing the joint as shown in Fig. 12, when the roller d is withdrawn and a second
roller c¹ (Figs. 13 and 14), is brought to bear upon the partially folded joint and
finishes the rim as shown in Fig. 14.
P
As a further modification of our invention and which is illustrated in Figs. 15 to 20 1
of the accompanying drawings, the clipped joint instead of being formed upou the
outside of the rim as shown in Fig. 8 may be arranged within the rim (Fig. 20). In
this arrangement the band or hoop a is placed in position within the internal split
roller or chuck A of which the ring 6 is a detachable portion. The roller c is then
brought to bear upon same forming or giving it the trough shaped section shown in 1
Fig. 16.
The roller c is kept in position and two supplementary rollers p acting
from a common centre are brought to bear upon the sides s of the rim (Fig. 17)
giving it the shape shown in Fig. 18. The rollers c and p are then withdrawn and a
split roller d (Fig. 19) is brought to bear upon the edges h of the partially formed
rim and draws them away from the sides of the internally split roller or chuck A and 2
closes and clips them forming the joint as shown at Fig. 20.
Instead of making the rims as shown in Figs. 3 to 20 inclusive, they may be made
of heavier gauge so as to be suitable for carriages, cabs, motor-cars, and the like and
this form of our invention is illustrated in Figs. 21 to 24, of the accompanying
drawings.
2
In this case the band or hoop is placed in position in the internally split
roller or chuck A of which the ring is a detachable portion. The presser roller c
is then brought to bear upon the band or hoop a thus forming or giving it a trough
shaped section shown in Fig. 22. The roller c is then removed and the split roller d
brought to bear upon the edges has shown (Fig. 23) pressing them inwards and 3
closing the rim to its final form as shown at Fig. 24.
Instead of the rims being left at the shapes shown in Figs. 8, 14, 20 and 24, the
edges may be given any desired curve, the process of which is illustrated in
Figs. 25 and 26, of the drawings.
с
In this case the rim is placed in the internal roll or chuck A and the presser or 3
roller c is brought to bear upon same (Fig. 25) which presses the edges of the
rim (Fig. 25) into the curved recesses ¹ in the roll or chuck A which gives them
the shape shown in Fig. 26.
It will thus be seen that by our invention the manufacture of tubular or hollow
junctionless or unbrazed rims is considerably simplified, thereby cheapening the
cost of manufacture, while the number of processes required to produce the finished
article are reduced to a minimum.
For example, the rim illustrated in the Figs. 3 to 8 is produced by about 3 processes
after the band or strip has been rolled to the required size for forming the rim, while
that illustrated in Figs. 9 to 14 is also produced in three rolling operations, and the 4
further rims illustrated in the drawings are produced by a correspondingly small
number of processes as compared with the methods now employed for producing
hollow or tubular junctionless or unbrazed rims.
Having no wparticularly described and ascertained the nature of our said invention,
and in what manner the same is to be performed, we declare that what we 5
claim is :-
1. The improved method of manufacturing hollow or tubular junctionless or
unbrazed rims from an endless strip or band of steel or other suitable material a of
a diameter equal to the smallest diameter of the finished rim, which is placed within
an internal split roller or chuck A furnished with the removable ring b and operated 5
upon by the roller c to produce the trough shaped section shown in Fig. 4 in

page_text: combination with the split roller d (Figs. 5 and 6) which brings the edges together
as shown at Fig. 6 and the clipping of the edges h, k, by rollers e, e, (Figs. 7 and 8),
the whole process or combination of processes substantially as herein described and
shown with reference to Figs. 3 to 8 of the accompanying drawings.
2. The production or manufacture of a hollow or tubular junctionless or unbrazed
rim by the process or combination of rolling processes herein described and shown
with reference to Figs. 9 to 14 of the accompanying drawings, substantially as, and
for the purpose specified.
3. The manufacture of a hollow or tubular junctionless or unbrazed rim by the
process or combination of rolling processes herein described and shown with
reference to Figs. 15 to 20 of the accompanying drawings, substantially as, and for
the purpose specified.
4. The production or manufacture of a tubular or hollow junctionless or unbrazed
rim, more particularly intended for use for the wheels of cabs, carriages, motor-cars,
and heavier vehicles, by the process or combination of rolling precesses herein
described with particular reference to Figs. 21 to 24 of the accompanying drawings,
substantially as and for the purposes specified.
5. The means whereby the edges of the finished rim may be given any desired
curve, substantially as herein described and shown with reference to Figs. 25 and 26
of the accompanying drawings.
Dated this 12th day of March 1897.
F. G. CASSELL
(Of Cassell & Co.),
22, Glasshouse Street, Regent Street, London, W.
Agent for the Applicants.