Improvements in and relating to Velocipedes.
Year: 1894

page_text: Date of Application, 5th Apr., 1894-Accepted, 2nd June, 1894
Improvements in and relating to Velocipedes.
I, MAX ŠVAGROVSKÝ of 658/II Prague, Bohemia, in the Empire of Austria,
Tradesman, do hereby declare the nature of my said 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 to improvements in the construction of tyres and lubricators
for velocipedes.
And in order that my said invention may be particularly described and ascer-
tained, reference is hereby made to the accompanying drawings in which similar
letters and figures of reference indicate corresponding parts.
Fig. 1 is a side view of a wheel fitted with my improved tyre.
Fig. 2 is a vertical section of Fig. 1 on the line bb.,
Fig. 3 is an enlarged sectional view of the tyre and rim.
Fig. 4 is a sectional side view and Fig. 5 is end view of my improved
lubricator.
Fig. 6 is a section of Fig. 4 on the line S-S and Fig. 7 is a part section of the
lubricator showing the action of the arrangement.
g
In Figs. 1, 2 and 3, B is the hub of the wheel, r r are the spokes, 9 is the rim
and A is the pneumatic tyre.
The pneumatic tyre is divided into two air chambers X and Y (fitted with
independent valves) by means of a web or partition n, the chamber X being
provided with a puncture closing band or attachment suitably fixed to the tyre A
at p. When the tyre A and band become punctured, the air escapes and the
band assumes a position fl indicated by dotted lines in Fig. 3. The web or
partition becomes distorted, shifting the relative positions of the puncture holes in
the band and tyre so as not to coincide one with the other. On reinflating the
chamber X the air between the band fand the tyre A escapes into the chamber X
through small holes gq; and the puncture holes in the tyre and band not now
being opposite to each other, no leak takes place.
The metal rim g of the wheel is preferably formed with a recess as shown to
receive the ridge or base d of the tyre, the inflation of the chamber Y being
sufficient to retain the tyre in the rim g. In order to prevent the tyre creeping on
the rim suitable spikes or spike headed nipples are fitted over the ordinary spoke
nipples k, the points of the spikes entering the ridge
of the tyre.
I form the tread of the tyre with a groove in which a rubber or other suitable
cord or tyre a is placed. This tyre a is held in position by tension, the tyre A
being partly deflated to place the cord a in position and reinflated to secure same.
In some cases I form projections as at a¹ a³ around the outer circumference of the
tyre in order to prevent side slipping when the tyre is used on the road. These
projections a' a² as well as the cord or tyre a may be dispensed with when the tyre
is to be used for path racing purposes.
My improved lubricator is shown in Figs. 4, 5, 6 and 7 in which B is the hub of
the wheel, C the fixed spindle or axle. 1 is the lubricator cup or oil receiver, the
side of which is fitted with a strip of glass or mica 2 for indicating the quantity of
oil therein. 3 is a movable plug, on the withdrawal of which oil may be introduced
to the receiver 1. The cup or receiver 1 is mounted on an oil tube 5 secured in the
hub as shown and having its upper end closed. The oil tube is fitted with a disc
or piston 8 working in a cylinder 4 secured to the cup 1. A spring 6 is enclosed
in the cylinder, between the piston 8 and the top of the cylinder for the purpose
of retaining the cup in its "shut" position. The upper end of the oil tube 5 is

page_text: fitted with a disc and washer 7 which is caused to impinge upon the upper end of
the cylinder 4 by the action of the spring 6, and thereby render the joint oil tight.
The action of the apparatus is as follows:-The cup 1, being filled with oil, is
pressed downwards against the action of the spring 6 thereby causing oil to enter
the oil tube 5, through small holes, drilled at or near its upper end as shown in
Fig. 7, and pass downward to the axle C. On the pressure being removed, the
spring forces the cup 1 back to its "shut" position as shown in Fig. 4.
The cup or receiver 1 is preferably made of thin flexible metal or other suitable
material and of a shape (as at Fig. 6) that will allow of the sides being squeezed,
if necessary, to eject the oil.
In the drawings the lubricator is shown applied to a hub of a wheel which
consequently revolves but my lubricator is equally applicable to other parts of the
velocipede where the axle revolves and the case, in which the lubricator is fitted, is
stationary.
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. In velocipedes the application and use of a pneumatic tyre, applicable for use
as a road or racing tyre, constructed and operating substantially as herein before
described and illustrated by Figs. 1, 2 and 3 of the drawings.
2. In pneumatic tyres, the means and appliances for preventing slipping of the
tyre on the road and creeping in the rim, substantially as herein before described
and illustrated in Figs. 1, 2 and 3 of the drawings.
3. In velocipedes the application and use of lubricators constructed and
operating substantially as herein before described and illustrated by Figs. 4, 5, 6
and 7 of the drawings.
4. The improvements in and relating to velocipedes, substantially as herein before
described.
1 1004
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent.