Improvements in Tires for the Wheels of Vehicles.
Year: 1899

page_text: Date of Application, 26th Sept., 1899-Accepted, 4th Nov., 1899.
COMPLETE SPECIFICATION.
Improvements in Tires for the Wheels of Vehicles.
I, FRANK LATIMER, of Huntley, MacHenry County, Illinois, of the United
States of America, Manufacturer, do hereby declare the nature of my 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 particularly to that class of tires for vehicle wheels known
as cushion tires tires in which a cushioning material or materials are used,
and in which a space or spaces are left for the purpose of providing for and
permitting the displacement of the cushioning material.
The object of my invention is to provide a simple, economical and efficient
cushion tire for vehicle wheels; and the invention consists in the features, com-
binations and details of construction hereinafter described and claimed.
In the accompanying drawings, Figure 1 is a sectional broken view of a portion
of a tire constructed in accordance with my improvements; and Fig. 2 a cross
sectional view, taken on line 2 of Fig. 1.
tube or
"
In constructing a tire in accordance with my improvements, I make an inner
core" A, of the desired diameter and length, and which is preferably
formed of rubber or other similar cushioning material. It is well known in
this art that where a hollow tube is used as the core of a tire, when displacement
takes place the tire is usually flattened out so as to bulge out the sides consider-
ably, and is therefore liable to be cut by the rim; and where metal strips or springs
are used this abnormal displacement which takes place results in trituration of
the contiguous surfaces and the rapid deterioration of the tire. In order to
prevent this objectionable feature, I provide the inner core of the tire with what
I call a strut portion a, which extends diametrically across the same, so that when
pressure is applied to the "tread" a¹ of the tire, a depression is permitted to
take place, while very little expansion takes place. This strut portion divides
the inner core into two longitudinal chambers a² and a³, each of which is provided
with a lining at, of textile fabric or other similar material.
To assist in the cushioning effect of the tire and in lengthening the life of the
same, I provide a helical spring B, which is preferably wound around the core,
as shown in Fig. 1, so as to form a compound spring. Between the coils of this
compound spring are wound silk or linen threads C coated or provided with a
solution of tacky rubber, which fills all the space between the springs. Outside
of these springs and the helical windings of thread or similar element, I provide
a second layer of rubber coated silk or linen threads D, which are wound the
length of the tire in one direction and then back-that is, instead of being wound
around helically and in contiguous coils, like a helix, so as to cover all the space,
it is wound perhaps once or twice around the springs the entire length of the
tire-say, fourteen feet--and then back again, and so on back and forth until
the springs are completely covered by a layer of threads crossing each other in
many places in a criss-cross manner-not like a woven fabric, but simply by
independent threads.
To form the outer casing, a sheath E, formed of rubber or similar material,

page_text: is moulded around the tire in any of the usual manners and the whole vulcanized
together in one operation.
The advantages incident to a tire constructed in accordance with my improve-
ments are (1) that the construction of the inner core prevents undue abnormal
distortion of the wire and minimizes the danger of rim cutting; and (2) the
peculiar windings of the two layers of threads embeds the spring in a fabric of
such construction that the danger of cutting by the springs is reduced to a
minimum.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
1. In a tire of the class described, an outer sheath or casing, a spring or
springs inside the casing and the inner tube or hollow core provided with a strut
extending diametrically across the same to prevent undue distortion of the tire,
substantially as described.
2. In a tire of the class described, the combination of an outer sheath or casing,
an inner tube or core, a helically coiled spring wound around the inner tube or
core so as to provide a compound helically wound spring, rubber covered threads
helically wound around the spring, and rubber covered threads wound back and
forth around the spring and helical threads and between them and the outer
sheath or casing so as to provide a complex criss-cross covering for the springs,
substantially as described.
3. In a tire of the class described, the combination of an outer sheath or casing,
an inner tube or hollow core provided with a diametrical
« strut," a helically
coiled spring wound around the inner tube or core so as to provide a compound
helically wound spring, rubber covered threads helically wound around the spring,
rubber covered threads wound back and forth around the springs and helical
threads and between them and the outer sheath or casing so as to provide a complex
criss-cross covering for the springs, substantially as described.
Plated 1
י
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.