Pullies or Winding Drums upon their Axles.
Year: 1886

page_text: Pullies or Winding Drums upon their Axles.
I THOMAS BAILEY of Washington Iron and Steel Works in the County of
Durham Engineer 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:-
My invention relates specially to securing tub and wagon wheels upon their
axles but it is applicable also to other wheels or to driving sheaves pulleys or
drums requiring to be fixeu upon their axle or shaft.
It consists in making one portion of the seat or bed for the wheel upon the axle
eccentric to the other portion, the hole in the boss of wheel being also made-either
in casting or by boring out-of corresponding eccentricity to fit the seat or bed.
Thus the larger diameter of the hole in boss being slipped over the larger diameter
of the seat or bed, and the smaller diameter of the latter fitting the smaller
diameter of the hole in boss, the wheel is perfectly secured against moving round
on the axle in either direction, without keys or wedges, and requires only to be
fixed from moving end wise by clinking over the outer end of axle, as in the case
of tub or wagon wheels, or by a through pin or key or a nut screwed outside as
may be required to suit other cases. This mode of securing wheels dispenses
entirely with keys or wedges, it is all lathe work and the wheel is centred perfectly
true on the axle while the strength of the shaft or axle and that of the eye of
wheel are not impaired by cutting key beds in them. In many cases the wheel
will be fixed beyond the possibility of working off endwise by the boss being
slightly warmed so as to contract upon the seat or bed on axle, or it may be driven
on, or forced on by hydraulic pressure, with a very slight amount of taper. In the
case of tub or wagon, or any wheels running upon rails, the tendency is to keep
the wheel on its seat or bed on shaft by pressure on the flange and therefore a
good driving fit will probably be found sufficient.
On Figures 1 and 2. I illustrate my invention as applied to a coal tub wheel
and axle.
A is the axle having its outer end B turned down to a smaller diameter and
eccentric to the main centre. C is the wheel, the boss or nave D of which is bored
out at E to the larger diameter of the axle and concentric with the rim or tyre F,
[Price 6d.]

page_text: while the part G is bored out to the diameter of the smaller outer end B of axle
and eccentric to the same extent. The wheel is kept on its seat or bed endwise by
the end of axle being clunk over as shewn.
Figure 3 shews another method of fixing the wheel on its seat or bed by means
of a nut H on screwed end of axle, applicable to cases in which the wheel may be
required to be readily removed and replaced.
Figure 4 shews another mode of preventing the wheel coming off the seat or bed
which is suitable for tub wheels and enables them to be readily replaced in case of
breakage by simply knocking out the pin P.
Figure 5 shews the mode in which pullies for winding engines may be fixed upon
their axles according to my invention. Existing wheels, having round holes in
boss, may be easily adapted to suit axles or existing axles adapted to fit new
wheels.
Having now particularly described and ascertained the nature of said inven-
tion and in what manner the same is to be performed I declare that what
I claim is―
Securing tub, wagon, or other wheels, pullies and drums, upon their axles or
shafts—without keys-by the method substantially, as described and shewn.