Improvements in Pneumatio Tires for Velocipedes and other Vehicles.
Year: 1893

page_text: COMPLETE SPECIFICATION.
[Communicated from abroad by HARRY COMSTOCK, Manufacturer, of the City-
of Fulton, County of Oswego, State of New York, United States of
America.]
Improvements in Pneumatio Tires for Velocipedes and other Vehicles..
I, DAVID YOUNG, of the firm of D. Young & Co., of 11 & 12 Southampton.
Buildings, in the County of London, Patent Agents, 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 pneumatic tires for bicycles and other vehicles, and con-
sists in the peculiarities of construction and novel combinations of parts hereinafter
described and claimed.
Heretoforo pneumatic or inflatable tires for bicycles have been extremely liable.
to bo punctured and thereby rendered useless in the conrse of ordinary nenge on
rough roads and from accidental contact with sharp substances. It is the object of
my invention to obviate this objection to such tires, and for that purpose I construct-
my improved pneumatic tire from a raw-hide tube, which may have a canvas
coating or covering on one or both sides to exclude dampness, and with this raw--
hide tube is combined an air-tight rubber covering, preferably vulcanized, and
formed with a thickened tread portion, as usual. The raw-hide tube is so tough
that it is impossible for it to be punctured by nails or other sharp objects which it.
may encounter in running over a road. When the raw-hide tube is dry, it has a
large degree of resiliency and with the attached vulcanized rubber covering or
trend it is impervious to dampness, decay or puncture and will last many times
longer than pneumatic tires of ordinary construction.
In the annexed drawing is illustrated a transverse section of my improved non--
punoturable pneumatic tire for bicycles.
Referring to the drawing, the numeral 1 designates a raw-hide tube. When a
little damp or soft, this tube is sufficiently pliable to be readily molded into any
shape required and will retain the same when dried. Inside the raw-hide tube 1 ís
preferably cemented a thin canvas coating 2, and to the outside is cemented a thick
canvas coating 3, that effectually excludes dampness and affords a suitable surface-
for attachment of the onter rubber covering 4, which is preferably vulcanized and
forms the tread of the tire. The rubber covering or tread portion 4 is thick on.
one side as usual and may be cemented or otherwise secured to the hollow portion.
of the tire in any suitable manner.
A bicycle tiro of this construction can be manufactured at comparatively small
expense; the aunular raw-hide tube which forms the body of the tire is so tough
and durable that it will readily resist the effects of hard usage and will not be
punctured by contact with such hard and sharp substances as are frequently
encountered in passing over rough and uneven roads; while the canvas covering will
effectually exclude dampness and enable the raw-hide tube to retain its shape. It.
will thus be seen that in connection with the ordinary outer covering or tread of
vulcanized rubber, the raw-hide pneumatic tube furnishes a durable and effective-
tire. When the rubber tread or outer covering 4 becomes worn, it can be easily
replaced by a new one that can be suitably secured by cement, or otherwise, to
the outside of the raw-hide tube 1, which will outlast several renewals of the outer
covering.
This tire is not only cheap, durable and non-puncturable, but possesses a great
degree of resiliency and is at the same time much stronger than pneumatic tires of
ordinary construction, and cannot be punctured like a pneumatic tire_comprising
lenther. Ordinary leather used in pneumatic tires can be easily perforated, but.

page_text: raw-hide is so tough that it is almost impossible for it to be punctured by nails or
other sharp objects which may be encountered in travelling on roads.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :-
First. A pneumatic tire, consisting of a raw-hide tube, a canvas covering for
said tube, and a rubber tread applied to the exterior of the canvas covered raw-
hide tube, substantially as described.
Second. A pneumatic tire, consisting of a raw-hide tube, a canvas coating
cemented to the inside of the said tube, a canvas coating cemented to the outside of
the said tube, and a rubber tread applied to the canvas covered raw-hide tube,
substantially as described.
T
D. YOUNG & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicant.