A New or Improved Method or Process for the Manufacture of Hubs for Velocipede and other Wheels, and Machinery or Apparatus used therefor.
Year: 1896

page_text: A New or Improved Method or Process for the Manufacture of
Hubs for Velocipede and other Wheels, and Machinery or
Apparatus used therefor.
I, RUDOLF CHILLINGWORTH of Ostbahnhof, Nuremburg, in the Empire of
Germany, Metal Stamper, do hereby declare the nature of this invention to be as
follows:-
This invention refers to velocipede and other wheel hubs, each formed, as hereafter
described with a cylindrical portion or portions and a flange or flanges projecting
therefrom, and this from a single piece of tubular metal.
In producing the hub aforesaid, from a piece of tubular metal, the latter is heated
and is then placed in an apparatus or machine wherein a part or parts is or are
supported, leaving unsupported that part or parts of the tube (for proper lengths)
which part or parts contains or contain the metal from which the flange or flanges is
or are to be produced.
Pressure is then applied and the partially unsupported part or parts is or are forced
in the direction which the metal is free to move say laterally of the axis of the
tube.
Dies then operate upon the projecting annular parts which are thereby compressed
to produce the projecting flange or flanges. Such pressing dies may form parts of
the supporting case or cases by which the tubular part of the hub is retained in
shape.
The operation is effected by either a single or by successive reheatings of the tube.
The heating of the tube may be effected either before or after being placed in the
apparatus.
By my invention I produce a tubular hub having a projecting flange or flanges,
formed in a piece therewith and in fact from the metal of the tubular part itself,
and such a hub may be formed for example with an exterior central cylindrical part,
two circular projecting flanges, and cylindrical parts at the ends of the tubular hub.
18th day of December 1806

page_text: •
A New or Improved Method or Process for the Manufacture of
Hubs for Velocipede and other Wheels, and Machinery or
Apparatus used therefor.
I, RUDOLF CHILLINGWORTH of Ostbahnhof Nuremburg, in the Empire of Germany,
Metal Stamper, 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 refers to velocipede and other wheel hubs, each formed, as hereafter
described with a cylindrical portion or portions, and a flange or flanges projecting
therefrom, and this from a single piece of tubular metal.
In producing the hub aforesaid, from a piece of tubular metal, the latter is heated
and is then placed in an apparatus or machine, wherein a part or parts, is or are
supported, leaving unsupported that part or parts of the tube, (for proper lengths),
which part or parts, contains or contain, the metal from which the flange or flanges
is or are to be produced.
Pressure is then applied, and the partially unsupported part or parts, is or are
forced in the direction in which the metal is free to move, say laterally of the axis of
..the tube.
Dies then operate upon the projecting annular parts, which are thereby compressed
to produce the projecting flange or flanges.
Fig. 1 is a vertical section shewing a piece of tube in position in the pressing
apparatus prior to being operated upon for the production of a flange.
Figs. 2 and 3, shew the same apparatus in more advanced positions.
Fig. 4 shews a flange formed, and
Fig. 5 shews the formation of a second flange on the same piece of tube.
Fig. 6 is a perspective view of a piece of tube having the two flanges formed
thereon, such as is suitable for say the hub of a velocipede or other wheel.
The piece of tube A which is to be formed with a flange, is placed with one end into a
recess in a fixed table B; such a recess is or may be fitted with a liner ferrule B¹ made
. to receive the diameter of tube to be operated upon, and the tube A is thus firmly
supported at the base, and for a required distance circumferentially. Around the
tube A above the ferrule B', is fitted an adjustable casing composed of two
parts CC, divided diametrically and externally somewhat conical towards the upper
end to receive a ring D by which the two parts C C¹ are clamped together, and caused
to closely embrace the tube A, above the ferrule B¹, while the lower end of the
casing C C¹ fits into a recess in the fixed table B, whereby the tube is tightly enclosed
and centred in position.
Onto the upper end of the tube A a ring E is placed which fits the exterior of the
-tube, and through this ring E, and into the tube A passes a cylindrical pressing
plunger. This plunger is of three diameters, the smallest of which F precisely fits
into the tube A, whereas the diameter of the second F is the same as the exterior
diameter of the tube A, and the upper part F is of a still larger diameter, being guided
and capable of vertical motion in a fixed head G.
The ring E is adjusted to the top of the tube A as at Fig. 1, so that upon further
downward motion of the plunger the shoulder of the part will abut upon the top
of the tube A at the same time that the shoulder of part F" will come into contact
with the top of the ring E. It is in this position the parts are shewn at Fig. 2, the
tube being wholly supported except at the part where a flange is to be formed.
At a further descent of the pressing plunger, the tube at the unsupported part
commences to bulge outwards as is shewn at Fig. 3, and then the part which has

page_text: been bulged out is pressed between the casing C C¹ and the ring E. This ring E is
formed with a recess E, into which the pressed-out part of the tube A is finally
forced as is shewn at Fig. 4, in order to ensure that the produced flange A' shall have
a true circular formation.
A flange A having thus been produced near one end of the tube A, the latter is
removed, and if a second flange is required to be formed on the same piece of tube,
the latter is inverted, and placed in position as shewn at Fig. 5, a casing C C¹ of
proper length being adjusted to position, and also a ring E; the operation is then
repeated as before described, a second flange formed on the tube A, the latter is
removed, and the ring E and casing C C¹ being detached therefrom, the tube A with
its two flanges A' A presenting the appearance shewn at Fig. 6.
The above operations are effected while the tube is in a properly heated state, and
during the operation or operations the tube may be heated or re-heated as required.
The heating of the tube may be effected either before or after being placed in the
apparatus.
By this invention a tubular hub is produced having a projecting flange or flanges,
formed in a piece therewith and in fact from the metal of the tubular part itself,
and such a hub may be formed for example with an exterior central cylindrical part,
two circular projecting flanges and cylindrical parts at the ends of the tubular hubs,
as shewn at Fig. 6 aforesaid.
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 :-
1. The method or process for producing flanges on tubes such as for the hubs of
velocipedes and other wheels, consisting in properly heating or re-heating the tube as
required, placing the end of same into a recessed bed enclosing the lower part of
tube by a casing, and placing a ring upon the upper end, while a movable plunger
enters the tube, the plunger having a shoulder to act upon the end of tube, and a
shoulder to act upon the upper ring, and so that the tube is supported excepting at
the exterior surface of the part where the flange is to be formed, then applying
pressure by a downward movement of the plunger, and thereby causing a bulging
outwards of the unsupported walls of the tube, the part forced out being pressed
into the form of flange required, substantially as described.
2. A hub for velocipede or other wheels, formed from one piece of metal tube, such
hub having a central cylindrical portion, two flanges, and a tubular extension beyond
each flange, substantially as described.
3. The apparatus or machinery for producing a flange or flanges on tubes, all
constructed arranged and acting substantially as and for the purposes described and
illustrated with reference to Figs. 1 to 5 of the accompanying drawings.
Dated this 3rd day of June 1897.
Witness:-
E. G. BREWER,
33 Chancery Lane, London.
RUDOLF CHILLINGWORTH.