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Jan.‘7, 1947.
Filed Nov; 15, 1943 I
Int/9x2. 1
‘ 1/
Patented Jan. 7, 1947
Kalman F. Sentivany, Hartford, Conn.
Application November 15, 1943, Serial No. 510,282 .
3 Claims.
(Cl. 152-245)
This invention relates to tire traction devices,
such as anti-skid chains commonly used on tires
of vehicles.
An object of this invention is to provide such
cated at l2 in Fig. 5. It will be noted that the
said loops H provide shoulders, at the outwardly
extending portions thereof, which serve to clamp
the plates Hl—l0 against the washers in the
laminated body of the member 1.
The said cross members are preferably ?at
viding su?icient traction to drive the vehicle.
and of a greater width at the bottom thereof in
A further object of the invention is the pro
order to prevent their rotation on the surface
vision of such a device which will prevent skid»
of the tire while in use.
ding and which will also eliminate excessive 10
The longitudinal members 8 are also con
vibration when the device is used over hard
structed with laminations of washers similar to
those used in the cross members 1. 'The washers
Further objects and advantages of the in
said longitudinal members, however, are se~
vention will be more clearly understood from
cured by a single wire l3 having loops 14 at its
the following description and from the accom»
a device which is suitable for use in mud, sand,
snow, or under other similar conditions, for pro~
panying drawing in which:
Fig. 1 is an end view, in central vertical section
on line l-l of Fig. 2, showing the device at~
tached to a vehicle tire.
Fig. 2 is an elevational side view of a portion
ends clamping the plates l5 against the lamina
tions. In the form shown in Fig. 6, the ends of
the loops are extended through the clamping
plates, as clearly indicated at IS, in order to
prevent opening of the loops by an excessive
As clearly shown in Fig. 3, it will be noted that
of the device.
Fig. 3 is an elevatlonal plan view showing a
the loops ll of the cross members receive the
portion of the device in ?at position.
loops I4 of the longitudinal members and also
Fig. 4 is an elevational side view showing one
connecting links I‘! and I8 which connect
of the side chain hooks used in the device,
25 the tread chain, consisting of the cross members
5 is a plan
5-—5 of Fig.
6. of
‘I and the parallel rows of the longitudinal mem
bars 8, to the side chains 6—6.
Fig. 6 is an end view of the same.
The said side chains are connected together in
Fig. 7 is a plan view, in central horizontal sec~
tion, of one of the longitudinal members, show 30 a, conventional manner by the use of the hooks,
as indicated at l9. It is intended that the side
ing a modi?ed form of loop therein.
chain ?tting on the inside of the tire shall be
As shown in the drawing, the numeral 5, de
separated into four sections and provided with
notes a vehicle tire of common construction on
four of these hooks while the outside chain mem
which‘ my improved traction device may be used.
Said traction device comprises side chains 35 ber will be provided with only one. This will
5-41‘, of conventional construction, by which the
provide for easily detaching the device from the
device is attached to the tire.
tire by simply disconnecting the four inside
A plurality of spaced cross members ‘I and
hooks and pulling the device outwardly off the
longitudinal members 8 are secured together to
form a chain ?tting around and against the 40
I claim:
tread of the tire. Each of these members is
1. In a traction device of the character de
preferably of laminated construction consisting
scribed, a cross member comprising an elongated
of a plurality of washers which are cut from a
body consisting of a plurality of resilient wash
suitab’e material, such as rubber covered with
ers forming laminations in said body, a pair of
canvas or other similar resilient material. The 45 spaced wires extending through said laminations,
said washers in each of the members 1 are se»
a plate at the opposite ends of said body, loops
cured together by means of a pair of wires 9-9
on said wires bent in opposite directions and re
which extend longitudinally through spaced
taining said plates in position to clamp said
openings in the washers. At the opposite ends
therebetween, longitudinal members
of the members, I provide clamping plates Ill-4 4) 50 extending between said cross members and con
which are forced against the ends of the mem
bers by means of loops lI-II in each of said
wires. These loops are bent outwardly and then
inwardly with their ends preferably adjacent to
the surfaces of the said washers lO-IO as indi 55
nected at each end thereof to said loops, 2. pair
of side chains for securing said cross members
to the tire, and means connecting said cross
members to said side chains.
2. In a traction device of the character de
scribed, a cross member adapted to extend across
the tread of a vehicle tire; the said member in
cluding a body portion which is rounded at one
side thereof and substantially ?at at the opposite
side; the said body portion being constructed of
a plurality of laminations of wear-resisting ma
terial, a plate at each end of said body portion,
a pair of spaced wires extending through said
body portion, and loops at the ends of said wires
for clamping said laminations between said
3. In a traction device of the character de
scribed, a plurality of longitudinal members each
consisting of a body portion formed of a plu
rality of laminations of wear-resisting ?exible
material, a plate at each end of said body por
tion, a wire extending through said laminations
and plates and having 1oops at the opposite ends
thereof abutting said plates to thereby clamp
said laminations therebetween, each of the looped
portions of said wire having the end thereof ex~
10 tending into an opening in the end plate to pre
vent opening of said loop.
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