Improvements in the Construction of Tires for Bicycle and other Vehicle Wheels.
Year: 1898

page_text: Date of Application, 14th June, 1898-Accepted, 16th July, 1898
COMPLETE SPECIFICATION.
Improvements in the Construction of Tires for Bicycle and other
Vehicle Wheels.
I, PETER JENSEN, of 77, Chancery Lane, in the County of Middlesex, Chartered
Patent Agent, do hereby declare the nature of this invention, which has been
communicated to me from abroad by The Milwaukee Patent Puncture-Proof Tire
Company, located in the City and County of Milwaukee, and State of Wisconsin,
United States of America, and in what manner the same is to be performed, to be
particularly described and ascertained in, and by the following statement:-
The invention has for its object to improve the construction of the tire for
vehicle wheels practically incapable of puncture, set forth in Letters Patent
Number 19521, of 1897, to Peter Jensen of Number 77, Chancery Lane, in the
County of Middlesex, England, and to that end it consists essentially in forming
a tire for bicycle or other vehicle wheels, comprising outer and inner elastic tubes,
with a series of strips of fabric interposed between said tubes in the outer or
tread part of the tire, said strips being coated with ground emery, carborundum or
analogous granular material mixed with rubber cement or solution, and all vul-
canized together, all as hereinafter more particularly set forth and illustrated in
the accompanying drawing.
DESCRIPTION OF THE DRAWING.
The drawing represents a transverse sectional view through a hollow or pneu-
matic tire, embodying said invention.
The invention has especial reference to tires for bicycle or tricycle wheels, but is
applicable to the wheels of other vehicles.
Referring to the drawing, A represents the outer tube and B the inner tube
of a pneumatic tire, the same being (when all the parts are assembled) hollow
continuous elastic tubes of ordinary construction, such as are well-known in the
art. C D are two strips of thin cloth or other suitable fabric, said strips being
continuous, and of proper length so as to extend the entire circumference of the
tubes, the side edges of said strips being lapped over each other, as shown in the
upper part of the drawing, the parts lettered a b representing the lapped side
edges of the innermost strip C, and the parts lettered d representing the lapped
side edges of the outermost strip D.
E F G represent other continuous strips of thin cloth or other suitable fabric,
also of a length corresponding to the circumference of the tubes, but said
strips E F G, unlike the strips CD, do not extend transversely all around between
the outer tube A and inner tube B, but are all applied within that outer half (in
transverse section) of the tire, which is known as the tread, being that half or
portion, outside of the rim of the wheel, which is in contact with the ground or
The outer surface of each
floor when the bicycle, or other vehicle, is in use.
strip E F G is covered with a coating e of ground emery carborundum or
analogous fine granular material mixed with a rubber cement or solution. There
may be desired number of these last named strips, three being shown in the
any

page_text: drawing, and preferably the outermost strip (E, in this instance) should be the
widest, the others gradually decreasing in width, and the innermost strip (G, in
this instance) being the narrowest, so as to interfere as little as possible with the
circularity of the tire. The strips C D are also preferably coated with rubber
cement or solution, and when the parts are all assembled as shown in the drawing,
they are all vulcanized together, and then the outer or tread portion of the tire,
when in use, will be practically incapable of puncture from tacks, broken glass,
or bits of metal, and like objects, which might lie in the path of the rider, while,
at the same time, the coatings of emery or like substance will not add excessively
to the weight of the tire, nor seriously interfere with its resiliency. The said tire
is attached in the ordinary way to any suitable wheel-rim, the method of attach-
ment forming no part of the present invention.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, I declare that what I
claim is:-
1. A tire for bicycle or other vehicle wheels, comprising outer and inner elastic
tubes, with a series of strips of fabric interposed between said tubes in the outer or
tread part of the tire, said strips being coated with ground emery carborundum or
analogous granular material mixed with rubber cement or solution, and all vul-
canized together.
2. A tire for bicycle or other vehicle wheels, comprising outer and inner elastic
tubes, with concentric tubular layers of fabric interposed between them, and a
series of strips of fabric, coated with ground emery carborundum or analogous
granular material mixed with rubber cement or solution, placed next the said
concentric layers of fabric in the outer or tread portion of the tire, and all vul-
canized together.
Dated this 14th law of Tuna 1000
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.