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Патент USA US3021188

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Feb. 13, 1962
w. L. LINDNER ETAL
3,021,179
WHEEL TRACTION DEVICE
Filed Feb. 24, 1961
2 Sheets-Sheet 2
JNVENTOR.
WILLJAM L. LINDN E2.
BYHENRY J. Roxosz.
ATTDRN E YS
‘News tnte
iitates Eatent
14m
$21,179
a
Patented Pain. 13, 1962
1
2
3,021,179
ferentially spaced ?at arms 33, on whose outboard sur
faces are affixed, as indicated at 35, elongated tubes 32,
William L. Lindner, 17555 E. 224th St., Sauk Village, IlL,
having polygonal bores 34, preferably square, extending
WEEEL TRACTION DEVICE
anrid Henry J. Rokosz, 5534 S. Loornis Blvd, (Jhicago,
therethrough. The tubes 32 have closed inner ends 36,
which are radially spaced from each other, and open
Filed Feb. 24, i961, Ser. No. 91,426
5 Ciaims. (Cl. 301—47)
outer ends 38, and the tubes 32 are so positioned and are
of such lengths that their outer ends 33 are located close
This invention relates to improvements in traction de
vices for tire-equipped vehicle wheels, and more particu
larly to a novel and improved device of this kind which is
to the outboard sidewalls 4-0 of the tire l4, and spaced
radially inwardly from the tread 16 of the tire.
Slidably and non-rotatably engaged in the outer ends
of the tubes 32 are preferably solid, rigid traction bars
adapted to be mounted on the outboard side of a wheel
42, of the same cross section as the tube bores 34, the
bars 42 being, in the illustrated form of the invention, of
to reach outwardly beyond the tread of the tire on the
substantially the same length as the tubes 32. Strong coil
wheel, and the outboard side of the tire, and dig into 15 springs 44 are disposed in the tubes 32 and are compressed
compacted snow or ice, as the wheel is rotated in con
between the closed inner ends 36 of the tubes and the
tact with the ground.
squared inner ends 46 of the traction bars 42, and the
The primary object of the invention is the provision
outer ends of the springs are circumposed on axial bosses
of a more practical, efficient, and easily used device of
48 on the inner ends of the bars. The springs 4-4 are
the kind indicated, wherein the traction members, in their 20 long enough and strong enough to extend the traction
intended spring-urged positions, are out-pressed with suf
bars 42 far enough ‘beyond the tire tread l6 and with suf
?cient force to dig effectively into compacted snow and
ficient force, to effectively dig into compacted snow or ice
ice, and to provide eliicient traction for vehicle Wheels
50, present upon a road surface 52. The traction bars
on compacted snow and ice, but which, when encounter
42 are formed, on their outer ends, with pyramidical
25
ing hard road surface, yield inwardly, in a manner to
points 54, whose tips 56 are angled, out of the longitudinal
prevent damage to the traction members and a hard road
axes of the bars, in the direction of drive rotation of the
surface.
vehicle wheel 12 for a better traction grip in snow or ice.
Another object of the invention is the provision of a
Endwise movements of the traction bars 42, are limited
device of the character indicated above, wherein manual
by means of stop pins 58 engaged in longitudinal slots 60,
means is provided for locking the traction elements, in
provided in the outboard walls 62 of the tubes 32. The
elevated positions, wherein the traction members are out
pins 53 are preferably threaded in the outboard sides of
of contact with a road surface, and for releasing the trac
the bars 42, and have enlarged heads 64, on their out
tion members to extended positions, said manual means
board ends, Which extend outwardly beyond the outboard
being in the form of a single centered handle-equipped
walls 62, and provide means by which the bars 42 can
35
member.
be retracted, against the resistance of the springs 44, to
Other important objects and advantageous features of
retracted positions, as shown in FIGURE 4.
disc and has radial spring-urged traction members adapted
the invention will be apparent from the following descrip
tion and the accompanying drawings, wherein, for pur
At locations nearer to their inner ends than to their
outer ends, the tractions bars 42 are provided, on their
poses of illustration only, a speci?c form of the inven
outboard sides, with detent sockets 66, to be engaged by
40 detent pins 68, only in the retracted positions of the bars
tion is set forth in detail.
In the drawings:
42. The detent locking pins 68 are ?xed to and extend
FIGURE 1 is an outboard side elevation of a tire
inboardly from the outer ends of radially elongated leaf
equipped vehicle wheel, equipped with a traction device
springs 70 which are ?xed at their innervends, as indi
of the present invention, whose traction members are
cated at 72, to the outboard walls 62 of the tubes 32, at
shown in extended positions and biting into compacted
locations close to the inner ends of the tubes. The leaf
snow or ice on a road surface;
FIGURE 2 is a view like FIGURE 1, showing the trac
tion members in elevated positions, out of contact with a
springs '74} extend longitudinally outwardly along the tubes
32 and are, as shown in FIGURE 3, bowed away from
the outboard walls 62 of the tubes, so as to position the
road surface;
rounded
noses 74 of the detent pins 68 in holes 76 pro
FIGURE 3 is an enlarged vertical transverse section 50 vided in the outboard Walls 62, located intermediate the
taken on the line 3—-3 of FIGURE 1;
ends of the tubes 32.
FIGURE 4 is a fragmentary view like FIGURE 3,
For operating the detent pins 68 through the holes 76,
showing the traction elements in retracted positions; and
and into and out of the detent or locking sockets 66 of
FIGURE 5 is a fragmentary inboard side elevation
55 the traction bars 42, when the traction bars are in their
of said device, per se.
retracted positions, a manual operator and retainer, gen
Referring in detail to the drawings, wherein like nu
merals designate like parts throughout the several views,
the illustrated traction device, generally designated 16,
erally designated 8%} is provided.
The operator and retainer 80 comprises a stub shaft 82,
?xed to and projecting outboardly from the central por
tion 3]. of the spider, and equally radially spaced from
is shown installed on a vehicle wheel 12, having a pneu
matic tire 14 thereon having a tread l6, and a wheel disc 60 the closed inner ends 36 of the tubes 32, on which a
18. The wheel disc ‘13 has a central annular portion 20.
tubular hub 86 is slidably and frictionally engaged. The
The traction device 10 comprises a ?at central web 22,
preferably smaller in diameter than the wheel disc por
tion 20, and here shown as being square, and which has
hub 86 is ?xed, at its outboard end, to the center of a
?xed thereto, at equally circumferentially spaced points,
65 pins 68, and is positioned at the outboard sides of the
outwardly extending brackets 24, which are ?xed to the
wheel disc portion 26, as by means of bolts 28, extending
therethrough, in a manner to center the web 22 relative
?at cruciform. 83, which is slightly larger in diameter
than the distances between diametrically opposed locking
leaf springs 70. The cruciform has radial arms 89 along
which the leaf springs 79 extend. The leaf springs 70
are loosely and ?exibly connected, at their radially out
ward ends, to the outer ends of the arms 89 by lost
to the wheel disc 18, at the outboard side thereof.
Suitably ?xed to the outboard surface of the web 22, as 70 motion means such as metal or other suitable material
by weldings 3%, is the central portion 33'. of a spider hav
cords 90 extending through holes 92, formed on the arms
ing two diametrically opposed pairs of equally circum
.89, near their outer ends. The cords 90‘ are suitably
3,021,179
3
?xed, at their inboard ends, to the outer ends of the
and having inner ends ?xed to the tubes and outer ends
_ springs 79, and have enlarged retaining heads 96, on their
spaced away from the tubes, said locking pins being
outboard ends. Sufficient slack is provided in the cords
90, so that, in either the outboardly withdrawn position
?xed on the outer ends of the leaf springs, and operat-v
ing and retaining means comprising an axial stub shaft
fixed on and extending outboardly from the central por»
of the cruciform 88, as shown in FIGURE 3, or the in
board position of the disc 18, shown in FIGURE 4, the
cords 90 produce no restrictive connections between the
cruciform 88 and the springs 70. A ball handle 98 is
centered on the outboard side of the cruciform 88.
In operation, the cruciform 88 being in its outboard
position, the locking pins 68 being out of engagement
with the locking sockets 66, and the traction bars 42 be
ing in their extended positions, the points 54 of the bars
tion of the spider, an operating plate having a central
tubular hub extending inboardly therefrom and slidably
and frictionally engaged on said stub shaft, said plate‘
being positioned at the outboard sides of the leaf springs
and being movable in an inboard direction in said stub
shaft to engage and push the locking pins into and re
tain the pins in the traction bar locking sockets.
2. In combination, a vehicle wheel having a pneumatic.
tire thereon having a tread and a Wheel disc having an
42 extend beyond the tire tread 16 and bite into snow
or ice 50 present on a road surface 52 upon which the 15 annular central portion, ‘a traction device comprising a
spider having a central portion, mounting means remov
vehicle wheel 12 is being driven. However, whenever
ably securing the same to the outboard side of the central‘
the vehicle moves off the ice or snow 50 onto the hard
and unyielding road surface 52, the springs 44 yield so
portion of the wheel disc, said spider having spaced radial
arms, tubes ?xed to and extending along said arms, said
that the traction bars 42 are forced into their tubes 32
and the points 54 of the bars 42 engage the road surface 20 tubes having closed inner ends and open outer ends, trac
tion bars slidably and non-rotatably engaged in the outer‘
52 harmlessly, as the wheel 12 rotates, but are constantly
ends of the tubes, said traction bars having traction points»
ready to be extended to bite into a yielding surface,
on their outer ends, said traction bars having inner ends,
such as the snow and ice 50, when encountered.
spring means urging said traction bars out of the outer‘
Whenever it is desired to retract the traction bars 42,
so as to render the device inoperative, the bars 42 are 25 ends of the tubes, means limiting outward and inward
movements of the traction bars in said tubes, the traction
pushed inwardly, one by one, until their locking sockets
bar points normally reaching beyond the tread of the tire
66 are registered with the tube holes 76, and the locking
pins 68 pushed through the holes 76 into the sockets
66. The cruciform 88 is then pushed inboardly, on the
stub shaft 82, until the arms 89 bear retainably against
for digging into penetrable ice or snow on a hard road sur
face, said spring means being yieldable to enable inward
projecting outboardly from the leaf springs 70, as shown,
displacement of the traction bar points on contact there
of with a hard road surface devoid of penetrable snow
or ice, and means for releasably locking the traction
bars in retracted positions in said tubes wherein the trac
the retaining engagement of the arms 89 is against the
tion bar points are located inwardly of the tire tread,
the leaf springs '70, as shown in FlGURE 4. In case
the inboard ends of the cords 901 are secured to eyes 100
eyes 1%, rather than directly against the leaf springs 70. 35 said means comprising holes in the sidewalls of the tubes
located intermediate the ends of the tubes, locking sockets
There is su?icient frictional engagement between the hub
in the traction ‘bars, and locking pins movably mounted
86 and the stub shaft 82 to resist any tendency of the
leaf springs to displace the cruciform 88 from its inboard
on the tubes and engageable through the tube holes into
retaining position.
the locking sockets, radially elongated leaf springs ex
tending along the tubes and having inner ends ?xed to
Although there has been shown and described a pre
ferred form of the invention, it is to be understood that
the invention is not necessarily con?ned thereto, and that
any change or changes in the structure of and in the rela
tive arrangements of components thereof are contem
plated as being within the scope of the invention as de
the tubes and outer ends spaced away from the tubes,
said locking pins being ?xed on the outer ends of the
leaf springs, and opera-ting and retaining means compris
ing an axial stub shaft ?xed on and extending outboardly
from the central portion of the spider, an operating plate
having a central tubular hub extending inboardly there
from and slidably and frictionally engaged on said stub
What is claimed is:
_
shaft, said plate being positioned at the outboard sides
1. ‘In combination, a vehicle wheel having a pneu
of the leaf springs and being movable in an inboard di
matic tire thereon having a tread and a wheel disc hav
ing an annular central portion, a traction device compris 50 rection on said stub shaft to engage and push the locking
pins into and retain the pins in the traction bar locking
ing a spider having a central portion, mounting means
sockets, and flexible lost-motion means extending be
removably securing the same to the outboard side of the
?ned by the claims appended hereto.
central portion of the wheel disc, said spider having
tween and connected to the outer ends of the leaf springs
and said operating plate.
spaced radial arms, tubes ?xed to and extending along
3. In combination, a vehicle wheel having a pneumatic
said arms, said tubes having closed inner ends and open
tire thereon having a tread and a wheel disc having an
outer ends, traction bars slidably and non-rotatably en
annular central portion, ‘a traction device comprising a
gaged in the outer ends of the tubes, said traction bars
spider having a central portion, mounting means remov
having traction points on their outer ends, said traction
ably securing the same to the outboard side of the central
bars having inner ends, spring means urging said traction
bars out of the outer ends of the tubes, means limiting 60 portion of the wheel disc, said spider having spaced radial
arms, tubes fixed to and extending along said arms, said
outward and inward movements of the traction bars in
tubes having closed inner ends and open outer ends,
said tubes, the traction bar points normally reaching
traction bars slidably and non-rotatably engaged in the
beyond the tread of the tire for digging into penetrable
outer ends of the tubes, said traction bars having traction
ice or snow on a hard road surface, said spring means
being yieldable to enable inward displacement of the 65 points on their outer ends, said traction bars having inner
ends, spring means urging said traction bars out of the
traction bar points on contact thereof with a hard road
outer ends of the tubes, means limiting outward and in
surface devoid of penetrable snow or ice, and means for
ward movements of the traction bars in said tubes, the
releasably locking the traction bars in retracted positions
traction bar points normally reaching beyond the tread
in said tubes wherein the traction bar points are located
inwardly of the tire tread, said means comprising holes 70 of the tire for digging into penetrable ice or snow on a
hard road surface, said spring means being yieldable to
in the sidewalls of the tubes located intermediate the
enable inward displacement of the traction bar points
ends of the tubes, locking sockets in the traction bars,
on contact thereof with a hard road surface devoid of
and locking pins movably mounted on the tubes and
penetrable snow or ice, and means ‘for releasably lock
engageable through the tube holes into the locking sockets,
radially elongated leaf springs extending along the tubes 75 ing the tractions bars in retracted positions in saidtubes
3,021,179
5
6
wherein the traction bar points are located inwardly of
the tire tread, said means comprising holes in the side
walls of the tubes located intermediate the ends of the
tubes, locking sockets in the traction bars, and locking
pins movably mounted on the tubes and engageable
form, and ?exible lost-motion means extending between
through the tube holes into the locking sockets, radially
elongated leaf springs extending along the tubes and
and connected to the outer ends of the leaf springs and
the cruciform arms.
5. In combination, a vehicle wheel having a pneumatic
tire thereon having a tread and a wheel disc having an
annular central portion, a traction device comprising a
having inner ends ?xed to the tubes and outer ends
spider having a central portion, mounting means remov
ably securing the same to the outboard side of the central
spaced away from the tubes, said locking pins being ?xed
portion of the wheel disc, said spider having spaced radial
on the outer ends of the leaf springs, and operating and 10 arms, tubes ?xed to and extending along said arms, said
retaining means comprising an axial stub shaft ?xed on
tubes having closed inner ends and open outer ends, trac
and extending outboardly from the central portion of
the spider, an operating plate having a central tubular
tion bars slidably and non-rotatably engaged in the outer
ends of the tubes, said traction bars having traction points
on their outer ends, said traction bars having inner ends,
hub extending inboardly therefrom and slidably and fric
tionally engaged on said stub shaft, said plate being posi 15 spring means urging said traction bars out of the outer
tioned at the outboard sides of the leaf springs and being
movable in an inboard direction on said stub shaft to
ends of the tubes, means limiting outward and inward
movements of the traction bars in said tubes, the traction
engage and push the locking pins into and retain the
bar points normally reaching beyond the tread of the
pins in the traction bar locking sockets, said’ operating
tire for digging into pentrable ice or snow on a hard
plate being cruciform and having a central portion and 20 road surface, said spring means being yieldable to enable
radial arms extending along the leaf springs, and a bail
handle ?xed to and extending outboardly from the cen
inward displacement of the traction bar points on con
tact thereof with a hard road surface devoid of penetrable
tral portion of the cruciform.
4. In combination, a vehicle Wheel having a pneumatic
snow or ice, and means or releasbly locking the traction
tire thereon having a tread and a wheel disc having an
annular central portion, a traction device comprising a
spider having a central portion, mounting means remov
ably securing the same to the outboard side of the central
portion of the wheel disc, said spider having spaced
bars in retracted positions in said tubes wherein the trac
tion bar points are located inwardly of the tire tread,
said means comprising holes in the sidewalls of the tubes
located intermediate the ends of the tubes, locking sockets
in the traction bars, and locking pins movably mounted
on the tubes and engageable through the tube holes into
radial arms, tubes ?xed to and extending along said arms, 30 the locking sockets, radially elongated leaf springs ex
said tubes having closed inner ends and open outer ends,
tending along the tubes and having inner ends ?xed to.
traction bars slidably and non-rotatably engaged in the
the tubes and outer ends spaced away from the tubes,
outer ends of the tubes, said traction bars having traction
said locking pins being ?xed on the outer ends of the leaf
points on their outer ends, said traction bars having inner
springs, and operating and retaining means comprising an
ends, spring means urging said traction bars out of the 35 axial stub shaft ?xed on and extending outboardly from
outer ends of the tubes, means limiting outward and in
the central portion of the spider, an operating plate hav
Ward movements of the traction bars in said tubes, the
ing a central tubular hub extending inboardly therefrom
traction bar points normally reaching beyond the tread
of the tire for digging into penetrable ice or snow on a
and slidably and frictionallyengaged on said stub shaft,
said plate being positioned at the outboard sides of the
hard road surface, said spring means being yieldable to 40 leaf springs and being movable in an inboard direction
enable inward displacement of the traction bar points on
on said stub shaft to engage and push the locking pins
contact thereof with a hard road surface devoid of pene
into and retain the pins in the traction bar locking sockets,
trable snow or ice, and means for releasably locking the
said operating plate being cruciform and having a central
traction bars in retracted positions in said tubes wherein
portion and radial arms extending along the leaf springs,
the traction bar points are located inwardly of the tire 45 and a bail handle ?xed to and extending outboardly from
tread, said means comprising holes in the sidewalls of
the central portion of the cruciform, and ?exible lost
the tubes located intermediate the ends of the tubes, lock
motion means extending between and connected to the
ing sockets in the traction bars, and locking pins movably
outer ends-of the leaf springs and the cruciform arms
mounted on the tubes and engageable through the tube
comprising holes in the cruciform arms, cords extending
holes into the locking sockets, radially elongated leaf 50 through the holes, the cords having inboard ends ?xed
springs extending along the tubes and having inner ends
to the leaf springs and outboard ends, and enlarged heads
?xed to the tubes and outer ends spaced away from the
on the outboard ends of the cords larger in diameter
tubes, said locking pins being ?xed on the outer ends
than the holes and engaged with the outboard sides of
of the leaf springs, and operating and retaining means
the cruciform arms.
comprising an axial stub shaft ?xed on and extending 55
outboardly from the central portion of the spider, an
References Cited in the ?le of this patent
operating plate having a central tubular hub extending in
UNITED STATES PATENTS
boardly therefrom and slidably and frictionally engaged
inboard direction on said stub shaft to engage and push
1,336,149
1,549,004
1,779,909
Nelson et al. __________ __ Apr. 6, 1920
Kading ______________ __ Aug. 11, 1925
Haagen ______________ .. Oct. 28, 1930
the locking pins into and retain the pins in the traction
bar locking sockets, said operating plate being cruciform
1,912,714
Lambert _____ __' _______ __ June 6, 1933
2,174,944
Leggett _______________ __ Oct. 3, 1939
28,065
Austria ______________ _. Apr. 10, 1907
on said stub shaft, said plate being positioned at the out
board sides of the leaf springs and being movable in an 60
and having a central portion and radial arms extending
along the leaf springs, and a bail handle ?xed to and ex 65
tending outboardly from the central portion of the cruci- _
FOREIGN PATENTS
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