Improvements in connection with Pneumatic Tyres for Bicycles and Tricycles.
Year: 1891

page_text: Date of Application, 22nd Aug., 1891
Complete Specification Left, 17th May, 1892-Accepted, 13th June. 1892
PROVISIONAL SPECIFICATION.
Improvements in connection with Pneumatic Tyres for Bicycles and
Tricycles.
I JOHN ROBERTS of Station Road Batley in the County of York Flock and
Waste Merchant do hereby declare the nature of this invention to be as follows:-
The object of my invention is to facilitate the repair of pneumatic tyres used for
bicycles and tricycles, when these have been injured by puncturing, either from
wear, intentionally, or otherwise.
With pneumatic tyres as at present used, it is a tedious and sometimes difficult
task to effect such repairs; owing to the fact that in most cases, the outer protective
covering surrounding the rubber pneumatic tube is fastened down over the tyre,
by being slightly overlapped in some cases and then glued or otherwise fixed by glue
or some adhesive cement. The overlapping parts require either to be torn open, or
the adhesive substance softened in some manner, before the rubber tube can be got at
for repairs. In other cases the overlapping parts are held together by lacing, with or
without the use of some adhesive compound. All these methods take up at least
considerable time when repairs have to be effected, before the tyre covering can be
put back ready for actual use.
Now my invention consists in forming the protective covering for the rubber
pneumatic tube, whether of leather or other material, with slitted overlapping flaps
in the usual manner; the slits being for the purpose of passing the spokes. Between
the spokes however, both parts which overlap are provided with holes fitted with
eyelets, and rivets are passed through the eyelets of the bottom flaps, with the
heads of the rivets resting against the metal rim of the wheel; and when the outer
flaps are laid over the inner ones, the eyelet holes in the former are passed over
the projecting shanks of the rivets. When the pneumatic tube is inflated, the
eyelets are drawn tight from opposite sides of the rivets, and thus lock themselves
securely; since the shanks of the rivets are so long, that it is impossible for the
outer eyelet holes to slip over the ends, at the same time the eyelets are drawn
down tight against the rivet heads, and the latter against the metal rim.
By this arrangement all need for adhesive or sticky cements is avoided, and
when the pneumatic tube is collapsed from any cause, the outer covering is more
readily opened out than by any other method of fastening, even where lacing
without cement is employed; it being only necessary to pull the outer flaps off
the rivets, about the part of the pneumatic tube to which it is desired to obtain
access.
The rivets have no heads on their exposed ends.
The outer protective covering may further be surrounded by a rubber coat, if
desired, to protect the leather.
C
1001
J. CLARK JEFFERSON, A.R.S.M. Wh. Sc.,
2, East Parade, Leeds, Agent for Applicant.

page_text: Improvements in connection with Pneumatic Tyres for Bicycles and
Tricycles.
I JOHN ROBERTS of Station Road Batley in the County of York Flock and
Waste Merchant, 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 :-
The object of my invention is to provide a covering or protection for the
pneumatic tubes used in connection with bicycles and tricycles, which whilst
protecting the tube to an equal degree as by such as are at present in use, offers
greater facilities for the carrying out of repairs to the pnuematic tube..
With pneumatic tyres as at present used, it is a tedious and sometimes difficult
task to effect such repairs, owing to the fact that in most cases the protective
covering is fastened down over the tyre by being slightly overlapped and then
glued or otherwise fixed by glue or some adhesive cement. The overlapping parts
require either to be torn open, or the adhesive substance softened in some manner
before the rubber tube can be got at for repairs. In other cases the overlapping
parts are held together by lacing, with or without the use of some adhesive
compound. These and other methods take up considerable time, when repairs have
to be effected, before the pneumatic tube can be got at, and in afterwards covering
up ready for actual use.
;
Now my invention consists in forming the protective covering for the pneumatic
tube, whether of leather or other material, with slitted or indented overlapping
flaps the slits or indents being for the purpose of passing the spokes. Between
the spoke slits, both parts which overlap are provided with holes fitted with eyelets,
and rivets or studs are passed through the eyelets of the bottom flaps, with the
heads of the rivets resting against the metal rim of the wheel. When the outer
flaps are laid over the inner ones, the eyelet holes of the former are passed over the
projecting shanks of the rivets.
When the pneumatic tube is inflated, the eyelets are drawn tight from opposite
sides of the rivets and thus lock themselves tightly and securely, since the shanks
of the rivets or studs are so long, that it is impossible for the eyelets to slip over
the ends when the pneumatic tube is only partially inflated; and the inflating of
the tube draws the eyelets tight against the heads of the rivets or studs.
The rivets may be loose, but I prefer to solder or otherwise secure them
to the metal rim. They are also preferably formed slightly tapered at their
upper ends.
1 prefer also to form the outer protective covering with an inner leather or
canvas body, and an outer rubber wearing part formed thicker about the tread.
By this arrangement all need for adhesive or sticky cements is avoided, and when
the pneumatic tube is collapsed from any cause, the outer covering is more readily
opened than by any other method of fastening; it being only necessary to pull the
outer Haps off the rivet shanks about that part of the pneumatic tube, to which it
is desired to obtain access.
It will be evident that my invention is not materially altered, if the flaps along
one side or edge only of the protective covering are provided with eyelet holes
and the rivets or studs are permanently attached to the flaps along the opposite
side or edge.
And in order that my invention and the manner in which the same is to be per-
formed, may be more readily and clearly understood, I have hereunto annexed the
accompanying drawings, in which
Fig. 1 is a cross section, and Fig. 2 is a longitudinal section, and part side view
of a pneumatic cycle tyre to which my invention is applied.

page_text: Fig. 3 is a plan to a smaller scale of part of the protective covering flattened out.
a is the pneumatic tube.
b is the metal rim of the wheel.
cc are the rivets or studs preferably with the heads soldered to the metal
rim b.
dd is the inner leather body of the protective covering.
ee are the spoke slits or indents.
Jare the eyelet holes, which are passed over the rivets or studs c c.
9 is the outer rubber body or wearing part of the protective covering.
hh are leather strips covering, and securing the outer edges of the rubber
tread g.
i is a piece of canvas inserted between the metal rim and the pneumatic tube.
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° A protective covering for the pneumatic tubes of cycle wheels, having over-
lapping flaps provided with eyelet holes on one or both sides, in combination
with rivets or studs, loose or attached, either to the metal rim or to the inner
under flaps.
2° A protective covering for the pneumatic tubes of cycle wheels substantially as
herein described and as illustrated in the accompanying drawings.
Dated this 13th day of May 1892.
J. CLARK JEFFERSON,
2, East Parade, Leeds, Agent for Applicant.