Improvements in Pneumatic and other Rubber Tires.
Year: 1896

page_text: Date of Application, 14th Apr., 1396-Accepted, 4th July, 1896
COMPLETE SPECIFICATION.
Improvements in Pneumatic and other Rubber Tires.
I, JOHN DUNGAN BEEBE, of Portland, County of Cumberland, State of Maine,
United States of America, 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 improvements in rubber tires, and the primary object of
the same is to produce a spring tire very resilient and yet having a high degree of
compressible resistance and a protecting network, by embedding therein a plurality
of concentric layers of fine flat springs formed of lateral deflections the deflections.
of the layers being staggering in cross section of the tire, and the layers separated.
and supported by the interposed rubber.
A further object of my invention is to form a rubber tire having a spring
formed of parallel convolutions of the same length throughout the entire circum-
ference of the tire whereby the springs may be wrapped several times around the
tire, and to interpose soft rubber in between the several layers of springs thus
formed, and vulcanizing it, whereby the layers of springs are united and yet.
separated by the said rubber.
In the accompanying drawings,
Figure 1, is a view of a tire embodying my invention, a portion of the rubber on:
the outside being broken away to exhibit the springs.
Figure 2 is a similar view showing the springs wrapped in a slightly modified
form.
Figure 3, is also a similar view showing another manner of applying the
springs.
Figure 4 is a detached view of a portion of the springs before application to the
tire.
Figure 5 is a cross sectional view of the tire shown in Figures 1, 2 and 3.
Figure 6 is a cross sectional view of the mechanically applied tire with our
invention applied thereto.
In Figures 1, 2 and 3, the springs have been shown as though there were not
any rubber between them, for the purpose of better illustrating the invention, but
as will be noticed from the description of Figure 5, which illustrates a cross-
section of Figures 1, 2 and 3, the rubber is finally preferably disposed between
the springs.
A represents a rubber tyre, which has applied between its surfaces one or
several layers of the springs illustrated in Figure 4. This spring consists of a
series of parallel convolutions and the spring is the same width throughout its
entire length, and consequently throughout the entire circumference of the tire,
whereby it may be wrapped around as many times as desired to secure the proper
amount of resiliency, and external depressing strength or tension.
The portions a of the spring shown in Figure 4 for
the parallel portions of the convolutions each one
neighbor as will be readily understood, and the lateral
are arranged staggering in cross section of the tire as
an effective protection for the tire in addition to the supporting qualities of the
several layers.
separate springs between
acting independent of its
deflections of the springs
clearly shown, which forms
I am enabled with this peculiar form of spring to construct a tire sufficiently

page_text: strong to support the rider, and yet have that resiliency which is the characteristic
of pneumatic tyres. In some instances I provide the interior surface of the tire
with an air-tight coating of rubber b. This enables the application of the
pneumatic principle, and the springs serve to prevent puncture and cutting of the
tire as will be readily understood.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed 1 declare that what
I claim is :-
1st. A rubber tire having embedded therein a light flat spring formed of lateral
deflections and arranged in a plurality of concentric layers one over the other,
the deflections of the layers arranged staggering in cross section of the tire
and each layer separated and supported from its neighbor by interposed rubber,
the whole combining to produce a very resilient tire with a high degree of
compressible resistance and a protecting net-work.
2nd. A rubber tire having embedded therein a spring formed of parallel con-
volutions, the said spring being of the same width throughout its entire length
and wrapped around several times to secure the required strength or external
resistance, the rubber of the tube being between, uniting, separating and
supporting the several layers, substantially as described.
Dated this 14th day of April 1896.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.