Improvements in Pneumatic Tyres for use on the Wheels of Bicycles, Tricycles, and Road Carriages.
Year: 1892

page_text: Date of Application, 18th Mar., 1892
Complete Specification Left; 18th Jan., 1893-Accepted, 18th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres for use on the Wheels of
Bicycles, Tricycles, and Road Carriages.
We, ALFRED NORMANTON, and HERBERT NORMANTON, both of Cooper
Street Manchester, in the County of Lancaster Agents, do hereby declare the
nature of this invention to be as follows :-
--
This invention relates to pneumatic tyres such as may be used on the wheels of
bicycles, tricycles and light road vehicles and the object of this invention is to
construct a pneumatic tyre that will resist the destructive effects of newly metalled
roads and uneven surfaces without detracting from its effectiveness.
In this invention we construct a pneumatic tyre by placing in the space formed
between the rim of the wheel and a covering consisting of canvas and rubber or
like material which is secured to said rim in the usual manner, an india-rubber or
elastic tube with a valve attached. In order to protect said tube when inflated,
from destruction either through being pierced with a sharp substance or from
friction against the inside of aforesaid canvas or other covering, we cement or
otherwise attach to the exterior surface of said inner tube on the side that when
inflated will be in contact with aforesaid canvas or other covering, a succession of
leather strips or strips of other protective material; or we may attach said strips
to the inside of the inner tube and cover them with rubber or other suitable
material; In order to attach these strips to the india rubber we inflate said tube to
the extent that will be required when in use and we place said strips in succession
so as either to partially or entirely cover the outer surface of said tube in which
position they are cemented or otherwise affixed. In order to place the tube on the
rim, it is deflated and when in position it is inflated so that the aforesaid leather or
other protecting strips shall interpose between the pneumatic tube and the outer
canvas or other covering, said strips being immoveable on the surface of the rubber
tube, and thereby avoiding damage to said tube from friction on the outer canvas
cover, while forming a protection against destruction through being picrced with a
sharp substance.
Dated thi. 17th d... of Much 1900
THOMAS PRESCOTT,
53, Arcade Chambers, St. Mary's Gate, Manchester,
Agent for Applicants.
COMPLETE SPECIFICATION.
Improvements in Pneumatic Tyres for use on the Wheels of
Bicycles, Tricycles, and Road Carriages.
We, ALFRED NORMANTON, and HERBERT NORMANTON, both of Cooper
Street, Manchester, in the County of Lancaster, 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:-
This invention relates to pneumatic tyres, such as may be used on the wheels of
bicycles, tricycles, and light road vehicles, and the object of this invention is to
construct a pneumatic tyre that will resist the destructive effects of newly metalled
roads and uneven surfaces, without detracting from its effectiveness.
In this invention we construct a pneumatic tyre by placing an india rubber air
tube, in the space formed between the rim of the wheel and a covering consisting

page_text: ordinarily employed for bicycles and tricycles.
In order to prevent the destruction of the aforesaid air tube when inflated in
consequence of being pierced with any sharp substance such as a nail or a thorn,
we attach to the inside of that portion of said air tube that comes nearest to the
ground, a succession of leather strips or strips of other protective material such as
india rubber, or said leather strips may be covered or coated with india rubber or
other substance, said india rubber coating if employed being placed on that side of
the strip that is in contact with the inner surface of the air tube herein before
described.
In the accompanying drawings
Fig. 1. shows an air tube partly in section with our invention applied.
Fig. 2. is a ride view showing a section longitudinally through part of the centre
of said tube.
Fig. 3. shows a portion of the inside of air tube drawn to an enlarged scale,
and
Fig. 4 is a section of the same through line A. A.
In these drawings a is the air tube which has a valve attached thereto; b the
strips of protective material which are cemented or otherwise securely attached to
the inside of the air tube a, by one end or edge 6¹ as shown in Fig. 4. the opposite
end 6' and side edges 6 of each strip being left free or unsecured. The free ends b³
of each strip may or may not lap over the fixed end of the succeeding strip, or
one of the side edges 63 may be secured to the inside of the air tube in lieu of the
end b', the opposite side edge and the ends 6' and 6' being left free.
By these means when any pointed substance such as a thorn or a nail pierces the
air tube, the free ends of aforesaid strips will be pushed inwards and will not be
pierced and when the intruding substance has fallen out or been withdrawn the
strip will be pressed tightly over the puncture by internal pressure of the air or
gas by which the air tube is inflated and thereby prevent deflation. The aforesaid
strips may be composed of leather only, or leather covered with india rubber on
the side that is intended to be placed against the inner surface of the air tube.
b
In the Provisional Specification that accompanied our application for a Patent of
this number and date, we have also described the method of placing the aforesaid
strips on the outside surface of the air tube, but as this portion of our invention
may have been previously performed, we desire to restrict our claim, and
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
In pneumatic tyres that are employed on the wheels of bicycles, tricycles, and
road carriages, the application of strips of leather, or india rubber, or other
protective material, or substance, or strips of leather covered with india rubber, 'to
the inside of that part of the air tube that comes nearest to the ground, by
attaching said strips thereto by means of one of their ends with the opposite end
and side edges free, or with one of the side edges attached thereto with the opposite
side edge and both ends free, in the manner and for the purpose substantially as
herein before described.
Did thin 17sh dow of Tamu 101