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Патент USA US2409410

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Ott. 15,4 1946.
`
C,
ZARTH
- 2,409,410
BEAD-LOCK RING ANDv ASSEMBLY
'Filed July s, 1942
3 Sheets-Sheet l
od. 15, 1946.
C. E. ¿Ama
>
-
..
2,409,410
'BEAD Loox RING mmA ASSEMBLY ’
Filed July s, 19424
5 sheets-sheet 2-
Oct. l5, 1946.
`
c.;-:.zAR1-H `
2,409,410
BEAD Locx RINGZAND ASSEMBLY
Fi_led Julylä, 1942 -
3 Sheets-Sheet 3
ym
2,409,410
Patented Oct. 15, 1946
UNITED STATES PMENT _ OFFICE z
Charles E. Zal-th, Akron, Ohio, assigner `to Wing
foot Corporation, Akron, Ohio, a corporation of
Delaware
Application July 3, 1942, Serial No. 449,601
5 Claims. (Cl. 152-400)
l
tion are achieved bythe provision of a bead lock
»ring for use with open beaded, straight sided
pneumatic tires and including a plurality of ar
cuate segments and means for connecting the
segments end to end so as to permit expansion
tire, such as a combat tire, to a rim.
and contraction of the ring. The ring is posi
When a conventional open beaded, straight
tioned between 'the beads of the tire mounted on
sided pneumatic tire is mounted on the usual rim
a rim having radially outwardly directed side
and operated in conjunction with the standard
iiangies and the pneumatic pressure inside of the
inner tube, any blowout occurring in the tire of
ten results in the tire separating from the rim or 10 tire"`^serves to move the ring down in wedged re
This invention relates to pneumatic tires and
to bead locking means therefor, and, more partic
ularly, is concerned with bead locking rings for
positively securing an open beaded, straight sided
becoming so loose on the rim as to render fur»
ther driving of'` the rim and tire impossible.
Therefore, it has been proposed heretofore to pro
vide-means for locking the beads of the tire in
association with the rim, but such proposed
means have been relatively expensive, difficult
lation between the beads of the tire and to en
gage the beads against the side flanges of the rim.
For a betterv understanding of my invention
reference should be had to the accompanying
drawings wherein Fig. `1 is a side elevation, partly
Ain section, of a bead locking ring constructed in
to apply and remove, and have not met with ac
accordance with the principles of my invention;
ceptance commercially.
Further, it has been proposed to provide bead
portion of the locking ring including the valve
locking means in the’form of ribs'or buttons
lformed integral with the rim and over which the
beads of the tire must move before being posi
tioned upon the bead seats with the ribs or pro
jections thereafter tending to hold the beads of
the tire on the bead seats of the rim. However,
bead lockingmeans of this type,` while possess
ing some merit for light tires, have been found
Fig. 2 is a fragmentary radial elevation of that
20 stem hole and driving lug; Fig. 3 is a cross-sec
tional view taken on line III-III of Fig. 2; Fig. 4
is a fragmentary radial elevation of a portion of
the locking ring illustrating the manner of con
necting together the arcuate segments thereof;
Fig. 5 is a cross-sectional view taken on line V-V
of Fig. 4; Fig. 6 is a perspective View illustrating
the manner in which the locking ring can be fold
ed together to form a compact unit for shipment,
to be unsatisfactory for heavy pneumatic tires,
handling, and the like; Fig. 7 is a cross-sectional
for example, combat tires, and do not adequate
ly secure the beads ofthe tireto the rim, to say 30 view through a rim, tire and tube illustrating the
positioning of the locking ring just prior to being
nothing of the difficulty of getting the beads of
the tire over the ribs or projections and on to the
bead seat.
`
` It is the general object of my invention to avoid
and overcome the foregoing and other diiiiculties
of and objections to known forms of bead locking
means by theprovision of an improved, relative
moved into wedging relation with the beads of
the tire; and Fig. 8 is a view similar to Fig. 7 but
illustrating the position of the locking ring after
it has been moved to the wedged locking position.
Referring to the drawings, the numeral I0 in
dicates generally one typical embodiment of a
bead locking ring constructed in accordance with
the principles of my invention. The bead locking
locking means to be employed in conjunction with
40 ring includes a plurality of arcuate segments I2
pneumatic tires and standard base rims.
each having substantially a channel shape in
Another object of my invention is the provi
cross section and adapted to be joined end to end
sion of a pneumatic tire and rim combination
by lost motion pivotal means. Such means ordi
including a new `and improved and readily oper
narily comprise short arcuate plates I4 having
ated bead locking ring adapted to be heldl wedged
beveled end portions I6. Each plate I4 has a
between the beads of the tire at a point radially
countersunk opening in each end which receives
within the inextensible bead portions of the tire.
the beveled head of a rivet I8 extending through
Another object of my invention is to provide
ly inexpensive, easily operated and applied bead
bead locking means which are moved tobead
locking relation by the pneumatic pressure inside
of the tire.
Another object of my invention is the provision
of an improved bead locking ring including a plu_
rality of arcuate segments connected end to end
in ring form by pivotal lost motion means.
The foregoing and other objects of my inven
a suitable slot 20 formed in the end of the arcu
ate segment I2, with each rivet I8 being provided
`with a hat head 22 which permits sliding and
rotary movement of the arcuate segment I2 with
respect to the plate I4 without separation of the
parts.
,
I
I provide a valve hole 26 in one of the arcuate
55 segments I2, as best seen in Fig. 2, and the valve
3
2,409,410
hole 26 is formed by punching out and bending
down a lug 28 in the arcuate segment which lug
serves, if this be desired, as a driving lug between
the ring IU and any rim upon which the ring is
mounted.
Fig. 6 of the drawings illustrates the manner in
which the entire ring I U can be'folded into a
¿i
cuate segments I2, as will be understood from
the foregoing description.
When it is desired to remove the tire 30 from
the rim 34 the side flange 36 of the rim which is
received in the gutter 38 is removed from the
gutter so that the entire tire 30, inner tube 40,
flap 42, and bead locking ring I0 can be slid lat
erally off .the rim 34.
relatively small .compact assembly vto facilitate
the packing, shipping, or handling thereof. It
From the foregoing it will be recognized that
will be noted from this ligure of the drawings that l0 the various objects of my invention have been
the heads 22 of the rivets are received between
achieved by the provision of an improved bead
the sides of the channels of the arcuate'segments
locking ring and assembly particularly adapted
and that the plates I4 join the arcuate segments
for Securing combat tires and the like to a base
together for pivotal and lost-motion »movement
rim, ,.and, generally providing improved, rela
so that the ring I û is free to expand and'eontract 15 tively-inexpensive, easily-operated positive means
to an amount limited by the movement of the riv
for securing an open beaded, straight sided tire to
ets I 8 in the slots 2U.
a rim. Although my invention is primarily
In the use of the bead ring I0 of my invention,
adapted to operations in conjunction with stand
as particularly illustrated in Figs. 7 and8 ?of the
ard rims-0f the type particularly illustrated and
drawings, the numeral .36 indicates generally an 20 described above, it should be recognized that I
.open beaded, straight sided pneumatic tire of a
‘may .employ a .bead locking ring of my invention
combat type having >a relatively heavy side Wall
>and .carcass vportion „including `a considerably
.in conjunction with 4other types lol? rims.
`While in accordance with the patentstatutes
.greaternumber vof plies oirubberized fabric than
I have speciiically illustrated yand described >one
fthe -.standard-pneumatic tire. However, it will be 25 embodiment vof my invention, it should-beparticu
«understood that the bead locking ring of my in
lla'rly Aunderstood that I am _not to be limited
ventionmaybe employed in `conjunction with the
thereto or thereby, but that the scope _of „my
standard, 'conventional Vpneumatic tire,
invention is deñned in the appended claims.
‘iI‘he ;tire':30 includes inextensible wire beadre
What Iclaim is:
-i‘nforcements 32,'whicl'11 inthe combat type of tire
1.'In combination, a substantially filat based
-illustrated are generally spaced laterally of each
rim having radially-outwardly ldirected lside
.other andare two in Ynumberfor each bead of
flanges, an open-beaded, straight-sided pneu
çthe tire. The pneumatic tire 3U is mounted -upon
matic'tinemounted thereon, an'inner tube mount
¿afsubstantially,standardmetal rim 34 having ra
ed within the tire,.a bead lockingming positioned
dially ,outwardly ydir_ectedside lianges 36, at least
between the beads of the tire, agflap between the
¿one Yof ‘which‘may' be removablyçreceived in a gut
ring and vthe inner tube, said tube being inflated
.terportionïëß formed-at one edge of the rim. Re
tofwedge the ring down between the vbeads of .the
.ceived~ within _the »pneumatic tire Y3l) is lan `inner
tire and radially within theginexgtensible wire re
:tube ¿ligand .affiap .d2 'is vpositioned between the
inforcements of the beads and to engage the beads
irmerztubeillû¿andtherim 34.
40 against the .side flanges of the rim, said ring in
¿Also ~.positioned;between the inner‘tube MI and
cludiïlg -a plurality of. arcuate segments of chan
.the rim :311 is the .bead locking range -I-d of my
nelshaped cross section, arcuate plates bridging
`present'inventioman‘d Fig. 7 of the drawings il
„between theends .of the segments, and rivets se
'lustrates '.thelposition lof :the bead locking ring
cured `to the ,arcuate plates and extending
priolttoinflation ofthe inner tube Ml. Irl-other
through-slotted openings in the ends of the seg
words,îFig. 7 illustrates the position that thejbead
_ments -to provide »pivotal lost motion connections
»locking ring III `takescduring the assembly of the
vbetween segments, and heads on the rivets re
tire, tube, 'ñap andlock Iring on therim `34. >Once
ceived within _thechannel of the segments.
.theçtire-öll and the various‘parts thereof, -as il
r2. In combination, a substantially flat based
lustrated `4inIFig. .7, _are 4completely mounted in 50 Irim having `radially-outwardly directed side
¿position
.under-¿pressure issupplied to the in
'ilanges'anopen-beaded, straight-sided pneumat
.tericnoi -the »inner tube t0 and this air under
ic :tire-mounted thereon, lan inner tube mounted
.pressure forces fthe _inner tube .40 and the ilap
within the tire, a bead locking ring positioned
.42 ¿down against the upperrsurface of the bead
between the beads vof the tire, said tube being in
lockingV ring `III to V‘wedge the bead locking ring 55 flated ytowedge the ring down between the beads
down between the beads of the Atire and ,into en
ofthe tire >and radially within the vinextensible
gagement with the rimiâß, `as particularly illus
_wire reinforcements of the beads and to engage
'ftrated in Fig-8. Itwill'be seen from Fig. 8 that
the _beads ¿against the `side ñanges of the-rim, said
>ring including a plurality of arcuate segments of
the beadlocking ring Iii is positioned radially in
wardly ofthe wire reinforcements 32 in the beads 60 channel-,shaped Icross section, arcuate plates
.bridging ¿between the ends of the segments, and
A,of the ¿tire ‘323, and that the rubber of the beads
¿rivets lsecured-to the arcuate _plates and extend
has `been deflected and-wedged under consider
Ving .threugh-sldtted openings inthe ends of the
ablehpressure by the bead locking ring I9 to vhold
segments »to .provide pivotal lost motion connec
Ithe beads of .the tire outwardly against the side
tions between segments.
,flanges 36 .of „the >rim Yin suche. ,positive fashion
23. :A bead 4lock'ring for use with open-beaded,
.thateven though _the pneumatic .tire shouldsuffer
straight-sided
.pneumatic tires including ya plu
ablow-out or-severe puncture the tire .is sosecure
-rality .of karcuate segments of channel-shaped
»lyheld on the -ri-m .34 as to permit continued oper
.cross section, arcuate plates bridging between the
‘ation of the .rim and .tire as an 'integral-unit.
'The radially inward movement of Athe bead
locking ring «Ill from theposition shown -in Fig. 7
to that shown in Fig. 8 is possible due to the lost
70 ends of the segments, rivets secured to thearcu
ate .plates .and extending ,through slotted open
-ings fin .the:.ends .ofzthesegments to provide piv
otallost motion Yconnections between segments,
motion connections between the rivets ¿I8 of _the
and heads on :the lrivets received within :the .chan
:plates :I4 andthe Aslots 20 :in the ends of the ar 75 nel shapeof the segments,
2,409,410
5
6
4. A bead-locking device adapted when in
stalled to retain the beads of a pneumatic tire
therein mounted on the rim, an inner tube in said
tire, and a bead-locking device for retaining the
upon its rim seat, comprising a plurality of arcu
ate segments united one to another by substan
beads against the rim flanges, said bead-locking
deviceV embodying a plurality of rigid arcuate
segments interconnected by rigid connectors to
. tially rigid connectors, said connectors and seg
ments having coacting means adapted to provide
pivotal movement of one segment with respect
to an adjacent segment, and relative circumfer
ential movement between adjacent segments.
form an annulus and means coacting With said
segments and connectors for providing pivotal
movement between adjacent segments as well as
relative circumferential movement between said
5. In combination, a iianged rim, a pneumatic i0 segments.
tire having inextensible bead reinforcements
CHARLES E. ZARTH.
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