Improvements in Pneumatic Tyres.
Year: 1896

page_text: Date of Application, 19th May, 1896-Accepted, 20th June, 1896
[Communicated from abroad by THE SELF HEALING PNEUMATIC TYRE
COMPANY, of 84 Prescott Building, 65 Nassau Street, New York City,
United States of America, Manufacturers of and Dealers in Self-healing
Rubber Goods.]
Improvements in Pneumatic Tyres.
I, DAVID YOUNG, Patent Agent, of the Firm of D. Young & Co. of
11 and 12 Southampton Buildings, London W.C. 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 production of a "non-puncturable" pneumatic tire has been the acme of the
art of the bicycle manufacturers since the bicycle came so generally into public
use, but owing to the necessities of the case, such as elasticity, lightness, durability,
flexibility and strength, such a tire has not been produced, but by this invention
we shall describe a construction of tire that has proved practically non-puncturable,
that is to say, a self healing pneumatic tire.
Referring now to the drawings, Fig. 1 represents a composite tire involving the
principles of my invention; Fig. 2 a modification of the same; and Fig. 3 a
simplified form.
For the purposes of practically applying the form and construction of this
invention, we have employed as a self healing material pure rubber, which as is
well known possesses the property of closing or healing any puncture when the
instrument of puncture is removed. But we do not wish to limit ourselves to
pure rubber, as there are compounds that will fulfil the same functions equally
as well.
In
Referring more particularly to the drawings a represents a "hose-pipe" or
other tire; 6 the rim of the wheel; c represents the self healing material.
Fig. 1 we use a vulcanized rubber tube provided with thickened or re-enforced
portions 1 and 2, that may be ribs, if desired, and which are preferably of hard
rubber. A portion, 3, of the tire is preferably of some non-elastic material, such
as canvas, suitably secured to the said thickened or re-enforced portions. Between
the thickened portions 1 and 2 is located a band c of self healing material, and to
the same is attached a band 4 of vulcanized rubber, hardened gelatine or other
elastic material to complete the circular contour of the tire. To form a double
tube tire we use an ordinary shoe or envelope of vulcanized rubber or canvas.
Fig. 2 is a modification of Fig. 1, in that the tube is provided with ribs 5 and 6,
upon which an outer shoe or cover fits by means of suitable recesses provided
therein and is held in position by the pressure of the compressed air within
the tube.
Fig. 3 is a modification of Figs. 1 and 2 in that the tube is provided with a
band of self healing material directly attached to the tube, and in case of road
tires a shoe or cover is added.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, as communicated to me
by my foreign correspondents what I claim as novel is :
1. A pneumatic tire, consisting of a tube provided with a non-elastic portion and
a band of self healing material, substantially as described.

page_text: 2. A pneumatic tire, consisting of a tube of vulcanized rubber provided with a
non-elastic portion, a band of self healing compound and a suitable elastic tread,
substantially as described.
3. In a pneumatic tire a vulcanized rubber tube provided with suitable thickened
or re-enforced portions, a non-elastic portion located between said thickened
portions, a band of self healing material between said thickened portions and upon
said non-elastic portions and a suitable elastic tread to complete the circular
contour of the tire, substantially as described.
4. In a pneumatic tire the combination of a tube provided with a non-elastic
portion and a band of self healing material and also provided with suitable ribs or
projections, with an outer cover provided with suitable recesses to fit said ribs or
projections and held in position by the pressure of the air within the tube,
substantially as described."
Dated 19th day of May 1896.
D. YOUNG & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicant.