Improvements in or relating to the Manufacture of Wheel Hubs and similar Tubular Articles.
Year: 1896

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 11 of the Patents, &c. Act, 1883) as required by
the decision of the Chief Examiner of the 30th day of June 1897.
Date of Application, 19th June, 1896
Complete Specification Left, 21st Nov., 1896-Accepted, 6th Feb., 1897
VISIONAL SPECIE
TION.
Improvements in or relating to the Manufacture of Wheel Hubs
and similar Tubular Articles.
I, CHARLES THOMAS CROWDEN, Engineer, of Messrs. Humber & Company
Limited, Beeston, in the County of Nottingham, do hereby declare the nature of
this invention to be as follows:-
This invention relates to wheel hubs and similar articles and the manner of
manufacturing them.
In carrying out the invention I make one or more hubs or other tubular
structures from a length of tube by placing it in a suitable gig or mould, the
inside of which represents the exterior of the article when moulded and by suitable
means I force the tube from the inside into the recesses of the mould, thus causing
it to assume the same shape, and after removing the tube thus shaped I saw or
otherwise divide it up into the respective hubs or other articles.
Hydraulic pressure is perhaps the most convenient as it can easily be applied
the interior of the tube, but other means may be employed for example freezing
the liquid, or purely mechanical means such as an expansible mandrel or core.
Other fluid pressure even such as compressed air or steam may be used.
Dated this 19th day of June 1896.
BOULT & WADE,
Agents for the Applicant.
Improvements in or relating to the Manufacture of Wheel Hubs.
and similar Tubular Articles.
I, CHARLES THOMAS CROWDEN, Engineer, of Messrs. Humber & Company
Limited, Beeston, in the County of Nottingham, 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 relates to wheel hubs and similar articles and the manner of
manufacturing them.

page_text: In carrying out the invention I make one or more hubs or other tubular
structures from a length of tube by placing it in a suitable mould, the inside of
which represents the exterior of the article when moulded and by suitable means
I force the tube from the inside into the recesses of the mould, thus causing it to
assume the same shape, and after removing the tube thus shaped I saw or otherwise
divide it up into the respective hubs or other articles.
Hydraulic pressure is perhaps the most convenient as it can easily be applied to
the interior of the tube, but other means may be employed, for example freezing
the liquid. Other fluid pressure even such as compressed air or steam may be
used.
In the accompanying drawings,
Fig. 1 is a longitudinal central section of a mould constructed according to this
i.vention and having a tube within it, in readiness to be so treated as to form hubs
for cycle wheels in the manner described.
Fig. 2 is a transverse section on the line X X of Fig. 1.
Like reference numerals indicate like parts throughout the drawings.
The mould shown in Fig. 1 is divided on a central longitudinal plane into two
parts, 1 and 2, in each of which are internal corrugations 3, so arranged that the
interior of the mould cavity corresponds in shape to the form which is to be given
to a plain tube inserted therein so that it may be converted into a tube corrugated
at intervals and intended to be subsequently separated into short portions, each of
which latter would constitute a hub for a cycle wheel for instance.
length of plain tube placed in the mould in readiness to be operated upon by fluid
under pressure admitted to its interior by way of a perforated core 5. The dotted
lines at 6 show the shape that the tube assumes in the internal corrugations 3 of
the mould after it has itself become corrugated by the operation of the pressure
fluid.
By cutting the corrugated tube into short lengths on the chain lines 7, after
taking it out of the mould, a number of cycle wheel hubs is produced.
In the example illustrated the core 5 is screw-threaded at 8 to fit a corresponding
internally threaded portion 9 of the mould. 10 is a packing rim compressed
between the head of the core 5 and the body of the mould in the recess into which
the head of the core screws. 11 is the supply pipe for water under pressure, 12 is
the central water channel of the core and 13 are branch channels affording
communication between the central water channel and the space around the core in
the interior of the tube 4. The core 5 at the end opposite to that at which the
pressure water enters is screw-threaded as at 14. 15 is a nut which screws on to
that screw-threaded portion and compresses a packing ring 16 in a socket 18 of
the mould, so as to form a tight joint which prevents water from passing the end
of the tube. 17 (Figure 2) are bolts by which the two halves of the mould are
fastened together.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :--
1. Moulding a number of tubular articles from a single length of tube in the
manner described.
2. Moulding a number of tubular articles from a single length of tube in a mould
such as described by the direct application of fluid pressure to the interior of the
tube.
3. A tubo provided at intervals with annular ridges produced in or upon it by
pressure, and adapted to be parted into lengths, each length forming a wheel hub.
4. A wheel hub or other moulded tubular article produced in the manner
described.
5. In apparatus of the kind described freezing a fluid to produce pressure for
the purpose specified.
6. The combination and arrangement of parts constituting the mould for

page_text: wheel hubs substantially as described and illustrated in the accompanying
drawings.
Dated th 19th day of November 1896.
CHARLES T. CROWDEN.
Boult & Wade,
Agents for the Applicant.