Pneumatic Tires for Vehicles.
Year: 1897

page_text: Date of Application, 8th July, 1897-Accepted, 21st Aug., 1897
Pneumatic Tires for Vehicles.
I, ROBERT EDWARD PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E., of 70, Chan-
cery Lane, in the Parish of St. Andrews, Holborn, in the County of Middlesex,
Consulting Engineer and Patent Agent, do hereby declare the nature of this inven-
tion (which has been communicated to me from abroad by Harold James Jacobs,
residing at 222 Fifth Avenue, City of New York, U.S.A., by occupation salesman
of bicycles), and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statements: -
My invention relates to the art or manufacture of that class of pneumatic tires,
known as Non-puncturable tires. All pneumatic tires, the chief component of
which is vulcanized rubber contain within the rubber one or more layers of cloth
or woven fabric, the function of this woven fabric being to prevent the tire when
In addition certain tires have also an
inflated from stretching or bursting.
exterior coating of fabric. As ordinarily constructed, such tires are subject_to
frequent punctures from tacks, sharp stones or other substances on the path. The
attempts which have heretofore been made to prevent punctures have been
limited to a construction consisting of an insertion in the body of the tire of some
All such additions reduce the
form of metal, raw hide or other tough material.
resilience of the tire and add to its weight. The object of my invention is to
provide a method of constructing a pneumatic tire, which shall be substantially
nonpuncturable and at the same time as resilient and as light in weight as the
tires constructed in the ordinary manner.
My invention consists in the chemical treatment of cloth or fabric ordinarily
used in the construction of pneumatic rubber tires.
I have discovered that if the fabric be saturated with a resinous solution, after
the evaporation of the solvent a portion of the resin will adhere to the threads of
the fabric and greatly increase the resistance of the fabric to penetration by a
sharp substance. The resin, however, becomes perfectly dry and readily powders,
when much of it will be shaken loose from the fabric.
I have found that a great improvement is effected if the resin be wholly or par-
All resins form with metals com-
tially converted into a resin soap or resinate.
binations chemically known as Resinates, and commercially known as Resin
Soaps. While I do not limit myself to any specific resin soap, I prefer a resinate
of Lime, and I will therefore describe the method and materials to be preferably
used.
The cloth or fabric is first treated to a bath of saturated lime water; preferably
while the fabric is still moist it is then immersed in a resinous bath made by
dissolving commercial resin in Alcohol. A solution two-thirds saturated produces
an evener coating than a saturated solution. The fabric is then dried and incor-
porated with the rubber in the manner usual in constructing tires containing a
web or fabric.
The effect of the chemical treatment upon the cloth is to prevent the threads

page_text: from slipping one on the other and also to offer a friction resistance to anything
penetrating the cloth.
It is obvious that my invention is applicable to both single and double tube tires.
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:-
Claim 1: As a new article of manufacture adapted to be used in the construction
of pneumatic tires, a cloth or fabric, which has been treated with a resinous
solution.
Claim 2: As a new article of manufacture adapted to be used in the construction
of pneumatic tires, a cloth or fabric, which has been treated with a combination
of alkali and resin.
Claim 3: The process of treating cloth or fabric to be used in the manufacture
of pneumatic tires, which consists in treating the cloth or fabric with an alkali
solution and a resinous solution.
Claim 4: In a pneumatic tire, the combination of vulcanized rubber and a
fabric treated with a resinous solution.
Claim 5: In a pneumatic tire the combination of vulcanized rubber and a cloth
or fabric treated with an alkaline solution and a resinous solution.
Claim 6: As a new article of manufacture adapted to be used in the construction
of pneumatic tires, a cloth or fabric, in combination with a resinate.
Wlated this 8th dov of Ll. 1907
Dated this 8th day of July
1907
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C.