Improvements in or relating to Machinery Employed in the Con- struction of Tension Wheels for Velocipedes and the like.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Machinery Employed in the Con-
struction of Tension Wheels for Velocipedes and the like.
We, ALEXANDER CRAIG, of 3, Clifton Villas, Ford Street, Coventry, in the
County of Warwick, Engineer, and CHARLES THOMAS AUSTEN, of 4, Crathorn
Street, Lewisham, in the County of Kent, Cycle Manufacturer, do hereby declare
the nature of this invention to be as follows:-
In the Specification of former Letters Patent granted to one of us and numbered
23,204 of 1896 there is described a machine for screwing up the nipples and
tightening the spokes of a tension wheel.
Our present invention has for its object to provide for use, with such a machine,
a chucking device for maintaining the hub centrally within the wheel rim and for
keeping the rim true whilst the wheel is being built up.
According to our said invention the wheel to be operated upon is carried by a
fork or holding device located in suitable proximity to the said building up
machine. In this fork runs a spindle over which the wheel hub is previously
passed and retained thereon by a coned nut or otherwise. Fast upon this spindle
is a boss held in position by a nut or otherwise. From this boss project radíally a
number of arms at the extremities of which is an annular metal rim or flange.
At intervals this flange is bored and tapped towards its axis to receive a screw
threaded stem forming part of a jaw. At the same points the flange is slotted
to receive a toothed wheel provided with an axial screw thread to engage with the
thread of the jaw stem. Upon one side of the flange is a toothed circular rack
held in position by plates or otherwise. The flange is also constructed to receive
a square-ended spindle to which is keyed a toothed wheel and to which latter
motion may be imparted by means of a suitable handle or box-key. The said jaws
may be shaped to correspond with the section of the rim and may either fit the
bed thereof only or may extend round its two sides.
When the wheel to be built up has been mounted as described the square-ended
spindle with its attached toothed wheel is turned. This operates to rotate the
circular rack which in turn operates the pinion wheels and they, being each screw-
threaded internally and held within the slot, operate to extend the jaws equally
and thereby maintain the wheel rim in truth.
dnul
1
1001

page_text: Improvements in or relating to Machinery Employed in the Con-
struction of Tension Wheels for Velocipedes and the like.
We, ALEXANDER CRAIG, of 3, Clifton Villas, Ford Street, Coventry, in the
County of Warwick, Engineer, and CHARLES THOMAS AUSTEN, of 4, Crathorn
Street, Lewisham, in the County of Kent, Cycle 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:-
In the Specification of former Letters Patent granted to one of us and numbered
23,204 of 1896 there is described a machine for screwing up the nipples and
tightening the spokes of a tension wheel.
Our present invention has for its object to provide for use, with such a machine,
a chucking device for maintaining the hub centrally within the wheel rim and for
keeping the rim true whilst the wheel is being built up.
In the accompanying drawings,
Figure 1 is a transverse section, and
Figure 2 is a part elevation illustrative of our invention.
Like reference numerals indicate corresponding parts throughout the drawings.
According to our said invention the wheel to be operated upon is carried by a
fork or holding device located in suitable proximity to the said building up
machine. In this fork runs a spindle 1 over which the wheel hub 2 is previously
passed and retained thereon by a coned nut 3 or otherwise. Upon the spindle 1
is a boss 4. This boss is fast upon the spindle and is held in position by a
nut 5 or otherwise. From the boss 4 project radially a number of arms 6 at the
extremity of which is an annular metal rim or flange 7. At intervals this rim or
flange is bored and tapped towards its axis to receive a screw threaded stem S
forming part of a jaw 9. At the same point the rim 7 is slotted to receive a toothed
wheel 11 provided with a screw thread to engage with the screwed stem 8. At
one side of the rim 7 a circular rack 12 is held by one or more back plates 13
secured by bolts 14. The rim 7 is likewise constructed to receive a square-ended
spindle 15 to which is keyed a toothed wheel 16 and to which motion may be
imparted by means of a suitable handle or box-key. 17 represents the rim of the
wheel and the jaws 9 may be shaped to correspond thereto and either as shown
or to fit round the two sides of the rim.
When the wheel to be built up has been mounted as described, the spindle 15,
and with it the toothed wheel 16 is turned. This operates to rotate the rack 12
which in turn operates the pinion wheels 11 and they, being each screw-threaded
internally and held within the slot 10 operate to extend the jaws 9 equally and
thereby maintain the wheel rim 17 in truth.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:
1. The combination, with an apparatus adapted to receive a spoke or its nipple
and tighten up the same, of means, substantially as set forth, for maintaining,
during the process of building up a tension wheel for a velocipede or the like,
the hub centrally within the wheel rim, and for keeping the wheel rim true.
2. In an apparatus for building up tension wheels for velocipedes and the like,
a chucking device for maintaining the hub centrally within the wheel rim and
keeping such wheel rim true whilst being operated upon comprising a rotatably-
mounted spindle upon which the hub is secured, a boss fast upon such spindle,

page_text: arms projecting from such boss, a rim carried thereby, extending jaws mounted
on such rim and means for extending such jaws equally so as to maintain the
wheel-rim in truth, substantially as set forth.
3. In a chucking device forming part of an apparatus for building up tension
wheels for velocipedes and the like, jaws having a screwed stem mounted upon an
annular rim and means for extending such jaws equally so as to maintain the
wheel rim in truth comprising a toothed pinion operated by a handle or box key,
a circular toothed rack operated thereby, and other pinion wheels operated by
said toothed rack substantially as set forth.
4. The construction, arrangement, and combination of parts constituting our
chucking device for maintaining the hub centrally within the wheel rim and for
keeping the rim true whilst the wheel is being built up substantially as set
forth and as illustrated in the accompanying drawings.
D
131
1
1000
A. F. SPOONER,
323, High Holborn, London, Agent for the Applicants.