Improvements in Pneumatic Tyres for Velocipedes and other Vehicles.
Year: 1893

page_text: Date of Application, 9th Oct., 1893
Complete Specification Left, 11th Dec., 1893-Accepted, 20th Jan., 1894
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres for Velocipedes and other
Vehicles.
I, FRANCIS PHILIP HAMMOND SISSONS, of 48 Haymarket, in the County of
London Cycle Manufacturer, do hereby declare the nature of this invention to
be as follows:-
My invention relates to improvements in pneumatic tyres for velocipedes and
other vehicles and has for its object to afford better protection for the air chamber
than heretofore and thus to render the tyre less liable to puncture. In carrying
my invention into practice, I provide an outer cover of sufficient width to be fixed
by any suitable means under the rim of the wheel the part thus affixed under the
rim of the wheel, being in the form of a linen or canvass extension of the outer
cover, and being provided with india rubber, suitable slits being formed at regular
intervals in this extension for the insertion of the spokes. Around each periphereal
edge of the wheel is sewn along the bent up edge of that part of the cover which is
fixed under the rim and the centre of the cover at the opposite periphereal edge of
the wheel rim, one edge and the central part of an inner cover or sheath, the top of
which is folded under the air chamber inserted in the latter cover or sheath under
the outer cover which completes the tyre and is covered with india rubber, the
edge of this cover being secured under the rim of the wheel by means of wires or in
any other suitable manner.
As my improvements are capable of some modification without departing from
the principle thereof I do not restrict myself to the precise form or placement of
the parts thereof.
Dated this 3rd day of October 1893.
FRANCIS PHILIP HAMMOND SISSONS.
COME LUIE DI BUIFICATION.
Improvements in Pneumatic Tyres for Velocipedes and other
Vehicles.
I FRANCIS PHILIP HAMMOND SISSONS of 48 Haymarket in the County of
London, 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 :-
My invention relates to improvements in pneumatic tyres for velocipedes
and other vehicles and has for its object a safer method of fixing such tyres to the
rini of velocipede wheels than has been effected heretofore.
In carrying my invention into practice, I fix over the concave outer surface of
the rim of a cycle wheel one end of a piece of canvass and I attach by stitches or
otherwise this piece of canvass to another piece arranged under the rim so that the
first piece extends on one side and forms the inside wrapper for the air tube or
chamber while the second piece which extends on the other side and is attached to
the india rubber band bearing on the ground, forms the outside wrapper of the said
tube or chamber, this band being folded over the second piece and provided at the
folded edge with key-hole shaped notches wherein the spokes enter, a wire being
inserted within the folding edge of the india rubber band on the other side of the
777

page_text: Spokes and Daving one end concu
firmly in position.
test spokes so as to matuta I
In the accompanying drawings wherein like letters of reference indicate
corresponding parts throughout the figures,
Fig. 1 is a side view of a portion of the tyre fixed to a corresponding portion of
the wheel rim.
Fig. 2 is a sectional view showing the covering bands opened, and the air chamber
bare, while
Fig. 3 is a similar view showing the tyre fixed in position ready for use.
Fig. 4 is a plan corresponding, to Fig. 2 but drawn on a smaller scale.
With special reference to Figs. 2 & 4 the canvass a is stitched at o o' above the
rim to the canvass b below the said rim to which canvass the india rubber piece c
is fastened and forms the bearing part of the tyre. In Fig. 3 C is the air tube or
chamber and the spokes. The canvass a is first folded over the tube C, when the
canvass and the india rubber c is folded over the canvass a the spokes & being
inserted in the key-hole notches of the said rubber. The sections between the
notches which form a hollow channel are lined with short tubes i of aluminium or
other suitable metal or material and through these tubes i the wire to is inserted so
as to bear against the other side of the spokes, these wires of which I may use two,
three, or more have one end formed like a loop to take over or hook on one of the
spokes s as clearly shown in Fig. 1. It will be seen that the whole tyre is securely
fastened by means of one set of wires, which is a considerable advantage as regards
steadiness, as the permanent fixing of one end of each canvass respectively over and
under the wheel rim in the manner clearly set forth, permits the construction of a
tyre of great stability and strength, and which will not creep or chafe.
I am aware that tyres have been previously fixed by means of wires but I make
no claim to the use of a wire but to the particular mode of fixing which I have
-employed.
As my improvements are capable of some slight modification without departing
from the principle thereof, I do not restrict myself to the precise form or position
of the several parts thereof.
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 :-
In pneumatic tyres the method of fixing the tyre by means of two bands of
canvass permanently fixed at one end to one another above and below the wheel
rim and at the other by wires inserted through tubes in the manner set forth and
provided with a loop at one end, whereby they are secured to the spokes,
subtantially as herein described and shown and for the purpose set forth.
Dated this 11th day of December 1893.
FRANCIS PHILIP HAMMOND SISSONS.