An Improved Method of Mounting Cycle Wheels.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
An Improved Method of Mounting Cycle Wheels.
I, WILLIAM FRANCIS ROBERTSON, Watchmaker, 69, South Street, Bo'ness, N.B.,
do hereby declare the nature of this invention to be as follows:-
-
This invention relates to an improved method of mounting the trail wheel of
cycles and consists in securing each end of the axle of the wheel within a bush
or bearing capable of moving up and down under the influence of a spiral spring,
the arrangement being such that the vibration upon the machine caused by the
wheel passing over any irregularities in the road, is lessened.
In the carrying out of my invention I employ a bush or bearing sliding within
a vertical slot formed in an extension piece, of which there are two, one bound
to each side of the fork of the trailing wheel. The said slot is of such a length
as to allow of a spiral spring being interposed to act on the top of the bearing
so that the spring is free to take up any undue motion of the wheel, and thus
lessen the vibration of the frame. The bearing and spring is retained in posi-
tion within the slot by guides consisting of two metal plates one arranged on
each side of the slot having tail pieces which are passed through the spring, the
said plates being bound to the bearing by the nuts on the axle of the wheel. If
desired the slots may be formed in the framing itself in place of in an extension
piece carried by the frame.
Dated this 15th day of Anvil 1000
An Improved Method of Mounting Cycle Wheels.
I, WILLIAM FRANCIS ROBERTSON, Watchmaker, 69, South Street, Bo'ness, N.B.,
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 an improved method of mounting the wheels of
cycles and consists in securing each end of the axle of the wheel within a bush
or bearing capable of moving up and down under the influence of spiral springs,
the arrangement being such that the machine can more readily pass over irregu-
larities or obstacles in the road.
Fig. 1 is a side view, partly in section, of a portion of the back wheel framing
of a bicycle, showing the method of mounting the back wheel, in accordance
with my invention.

page_text: Fig. 2 is an end view of same.
Figs. 3 and 4 are similar views of the application of my invention to the front
wheel of a bicycle.
Referring to Figs. 1 and 2, I employ a bush or bearing A arranged to slide
within a slot B formed in the stay Û of the framing, or formed in an extension 5
piece carried by the said stay. The same arrangement is employed at each
end of the axle D of the wheel. The slot B is of such a length as to allow of
the desired travel of the bush therein whilst the bush is connected to a rod E
arranged within the stay F, a spiral spring G governing the movement of the
bush and taking up any undue motion of the wheel, thus lessening the vibra-
tion of the frame.
I prefer to extend the horizontal top bar H rearwards so that the stays F
may be vertical or nearly vertical, and connect the sliding pieces h at the ends
of the rods E, together by a stay e Fig. 2, which passes through slots e¹ formed
in the stays F. By this means a very steady movement is ensured. The back
stays F may be screwed to the nipple for the connection may be effected in
any other convenient manner. Washers Gare arranged at both sides of the
slots B and are bound to the bearings A by the usual axle nuts. In Fig. 1 the
outer washer and nut is shewn partly broken away.
L is a buffer against which the top of the spring G abuts.
In Figs. 3 and 4, the rods E to which the bushes A are attached, are connected
to tubes H which slide easily within the tubes H¹ formed with, or carried by,
the fork H. The said tubes H are bound together by the cross piece h¹ and
are acted upon by the spiral springs J suspended from the arms h³ clamped to
the crown head.
The bicycle may have its rear or trail wheel mounted as in Figs. 1 and 2 and
its front wheel as in Figs. 3 and 4; or the rear wheel may be mounted in a
manner similar to Figs. 3 and 4 and the front wheel similar to Figs. 1 and 2;
or the same or similar spring arrangements may be applied to both wheels; or
the spring arrangement may be applied to one wheel only. Both wheels may
be fitted with concealed springs as in Figs. 1 and 2 which may be found pre-
ferable for bicycles for military or rough riding, whilst roadsters and cycles
for ordinary use may have both wheels mounted in a manner similar to Figs. 3
and 4, if found desirable.
With regard to Figs. 1 and 2, auxiliary stays, not shewn, may be arranged
between the stays F and the tube K, to further strengthen the latter, if required.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:
-
1. The method of mounting cycle wheels, substantially as and for the purpose
erein before described and shewn in the accompanying drawings.
2. In mounting cycle wheels, the bearings A arranged to slide in the slots B,
and acted upon by spiral springs such as G or J, substantially as herein before
escribed and shewn in the accompanying drawings.
Deted this 17th dox of January 1900.
JOHNSONS,
Applicant's Agents, 115, St. Vincent Street, Glasgow.
JOHNSONS,
Applicant's Agents, 115, St. Vincent Street, Glasgow.