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Патент USA US2404581

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July 23, 1946.
Q E‘ WQRKMAN
~
I ‘2,404,581
RES ILIENT WHEEL
Filed ‘Sept. 25', 1945
#112155
_
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22b
._52 ‘24b
.
BMW
Patented July 23, 1946
2,404,581 V
UNITED ‘ STATES PATENT» OFF/ICE
RESILIENT WHEEL ' ~
'
Clarence E.‘ Workman, Akron, Ohio, assignor to‘
The Firestone Tire & Rubber Company, Akron,
Ohio, a corporation of Ohio
Application September 25, 1943, Serial No.“503,84
8Claims.
(sizes-11y,
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l2, and through the other hub ?ange II which
may be somewhat thicker at its juncture with the
hub, as shown in Fig. 2, to give it greater strength.
The cap plate also is secured to ‘the ?ange ll,
near the periphery of each, by a series of bolts
I5, I57 that extend through said cap plate and
This invention relates to‘resilient wheels for
vehicles, and more especially it relates to resilient
wheels for use on railway and similar vehicles.
Car wheels that run upon rails set up de?nite
traction noises due to uneven roadbeds and to
joints in the track rails. Furthermore the wheels
?ange, and a spacer member I6 is mounted on
are subject to objectionable jar and vibration,
each bolt l5, between said'capplate and ?ange,
which may be transmitted to, thebodyof the
to limit the. extent that they can be drawn toward
- vehicle with resulting discomfort'to passengers.
Accordingly it has been proposed to employ car 10
wheels having inherent resiliency capable of elim
mating the transmission of noise therethrough,
and which will contribute‘ to riding comfort by
suppressing jars and jolts to which it is subjected.
eachiother by said bolts.
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At 18. is rshownthe metal tire or rim'of the
wheel; which tire is of the conventional con?gura
tion of tires adapted to travel on trackways. The
tire I8 is formed with a radially inwardly ex
It is to the improvement "of this type of car 15 tending circumferential ?ange l9','which ?ange
wheel that this invention is directed.
is disposed substantially inthe central plane of,
the tire; In the assembled wheelzstructurej the
tirev l?hisi disposed concentrically. of the axis vof
wheel-hub‘l?, ‘and the tire-?ange? is disposed
' '
The chief objects of the invention are-to pro
vide'a resilient wheel of the character mentioned
wherein the resilient elements ‘thereof may, be
, arranged so as to be subject solelyto shearstress 20
when loaded; to provide a wheel of the character
mentioned wherein the resilient elements may or
may not be normally under compressive stress,
parallel to-thecapplate-ltv and hub-‘?ange II;
midway between thef‘same, the inner circumfer
ence of the tire ?ange l9 being disposed radially
outwardly ‘of the. bolts l4.
Adjacent the-tire l8 -
the ?ange i9 is formed with a circumferential
as desired; to provide simplicity and cheapness
of construction; to provide facility of assembly; 25 series ofapertures 20 through which extend the
boltsgl-5 'with. spacer ,members 15 thereon, the
and in general to provide a superior resilient car
apertures 20 being substantially of larger diam
wheel. Other objects will be manifest as the de
eter‘ than said spacers to enable‘ relative move
scription proceeds. ‘
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ment between the .tire ?ange l9 andthe cap plate
Of the accompanying drawing:
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Fig. l is a side elevation of a resilient Wheel 30
embodying the invention;
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Fig. 2 is a section on the line 2-4 thereof;
Fig. 3 is a side elevation of one of the resilient
elements of the improved wheel;
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Fig. 4 is ‘a side elevation of a somewhat modi?ed
resilient element; and
It
andhub-?ange
II.
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Positioned on;opposit,e sides of the tire-flange
ii), in the spaces between the latter and the cap
plate [3 and hubr?ange H, are identical annular
resilient disc-like elements 22,, 22 composed of
rubber'or rubber-like resilient material. Each of
the resilient elements is enclosed at the respec
_' '
tive lateral faces vthereof by arcuate metallic plates
that arebonded, to the rubber-structure, pref
erably by vulcanization. As is best shown in Fig.
40 3, there are three metal plates on each side of‘ the
resilient element, the plates on one side thereofv
being ‘designated 23 and the plates on the other
side being designated 24. jThe, plates 23 and 24
have their arcuate margins disposed ?ushy‘rwith
Fig. 5 is a diametric section through another
modi?ed resilient element for resilient wheels. '
Referring to the drawing, there is shown in
Figs; 1 and 2 a'car wheel comprising a wheel hub
l0 that may be of any suitable size, and which
is of tubular form to receive the usual car axle
or spindle upon which it is mounted duringuse
in the usual manner. The hub I0 is formed'near
one end thereof with a relatively wide circum-i
ferential ?ange l I that extends radially outwardly ‘
therefrom. The hub is formed near its opposite
end with a relatively narrowior low circumferen
the resilient structure 22, at. the outer and inner
circumferential faces, thereof ,land have their end
margins" disposed radially of the resilient struc
ture. ;The end margins of the series of plates23
are‘spaced apart slightly,"as are theend margins
tial ?ange l2v that extends radially outwardly
therefrom, and mounted upon the hub in abutting 50 of theseries, of plates 24;»;As is‘clearly shown in
Fig. 3,>the plates 23>,v 24 of-a resilient element are
relation to the outer lateral. face of ?ange I2 is
' an annular cap plate l3 that is of the same out
side diameter as the hub-?ange I l. The cap plate
not coincident with eachother axially of the ele
ment, ‘but are offset or staggered so that, the
. location'of. the confronting endsof the plates 24.
that extend throughthe cap plate and hub flange " are offset angularly of the elementv fromthe loca;
I3 is secured to the hub by a series of bolts l4, l4
2,404,581
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ticn of the confronting ends of the plates 23. The
the elements adjacent the inner circumference
arrangement obviates any local weakness of the
thereof assures a more even distribution of the
structure due to the sectional character of the
stresses imposedupon'said elements, and also
1 .plates on the lateral faces thereof.
enables the attaching bolts 21, that secure the
The plates 23, 24 are utilized for attaching the
elements to the tire structure, to be concealed
resilient elements 22 to the tire-?ange l9, and
and protected interiorly of the wheel. The fea
to the cap-plate. l3 or hub-flange H as the case
ture of making the lateral facing plates 23, 24 of "
may be. More speci?cally, the plates 23 are
the resilient elements in‘ section form instead of
utilized for attaching one of the resilient ele-'
integral, asin prior constructions, gives the re
ments to the cap-plate I 3 and the other resili-, .10 silient elements a modicum of transverse ?ex
‘ ent element to the hub-?ange II, and the plates
ibility and enables slight relative movement be
‘ 24 are utilized for attachingboth resilientrele- ‘
tween the respective plates on either side of the
1 ments to the tire-?ange l9. Thus’in the mount- ‘_ elements so that less tolerence in the forming
1 ing of the resilient elements? 22 in the "wheel, 3
their positions are reversed so" that the plates 1
2d of each are in abutting‘ relation to the tire- '
of the apertur‘esZ?, '29 is required, since the ele
ments are ‘capable of slight distortion to bring
said apertures into registry with the bolt holes
?ange I9, the elements being’ concentric with,‘ in members H, I3 and [9 during the application
the axis of the wheel. Each resilient element is ,
of the bolts [5 and 21 in the assembling of the
1 formed at its inner circumference with a series '
1 of recesses or re-entrants 25 that are located in 20
1 the plates 123 'and'resilient- material of the ele
= ments, but not in the'plates 24 thereof. The
3 plates 24 are apertured at 26 in the‘regions there- '
‘ of that are coincident with, said re-entrants, said
I apertures receiving respective bolts 21," Fig. 2,
wheel.
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The construction of the improved wheel is rel
atively simple and inexpensive, and achieves the ~
other advantages set out in the foregoing state
ment of objects.
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v The modi?ed resilient element 220. of the in- .
‘ that also extend through tire-flange l9 and se
vention shown in Fig; ~4»is essentially similar to
the resilient elements 22 previously described‘,
‘ cure the resilient elements 22 to the latter. Each ‘
and differs therefrom solely in the form of the
resilient element 22 also is formedv at its periph- '
I ery with'a series of recesses or re-entrants 28
recesses or re-entrants in the inner circumfer
ence; and periphery thereof. As shown in Fig. 4, >
‘ 1 that are located in the plates?“ and resilient 30 said re'eentrants are designated 25a and 28a. and
1 material of the elements; but notin'theiplates 23 j, are in the shape of scallops that merge. gently
: thereof." 'As is'rbest shown in Fig.13, the re-en
with the circumferential faces’ of theresilient
VI trants 28 are sixin number, as are the re-en
element and itsside plates, instead of de?ning
§.trants25, the re-entrants 25, 28‘being offset from
sharp corners therewith as. in the elements
1 each other radially of the resilient element. The 35 shown in Fig- 3. The arrangement effects a ~
f plates 23are apertured at 29 in the regions'there
saving of material without sacri?ce of any» of ;
the advantages of the invention. ‘,
.
l of that are coincident With‘the re-entrants 28;
‘f said‘ apertures receiving respective spaced mem- ‘
The modi?ed resilient. element 221) shownin
‘hers l6‘ that are mounted on bolts l5‘be'tween
‘ the cap-plate]; and hub-‘flange l I, said spacers
Fig. dis ‘similar in mostrespects to the resilient ‘
elements previously-described,and differs there- _
‘ having'shoul'd'ere‘d end portions adapted to bear 1
fromfsolely in the transverse contour of its inner
and outer circumferential margins, between'the
‘ against the faces of the plates 23, around the
apertures 29, as is clearly shown in Fig. 2. The
re-entrants 28 provide clearance about the spac
‘lateral plates 23b, 2% of its structure. As shown
in Fig. 5, the material oflthe resilient body 2217,
- ers l5 enabling the'plates 724 to‘ move with the 45 when uncompressed, normally overlies the pe
7 s tire-?ange l9 relatively of the plates 23 when the
ripheral margins of the plates 23b, 24b and bulges
wheelie in use."
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somewhat beyond said margins, and is circum
From the/foregoing it will be apparent that
ferentially grooved at 32, 32 between said bulged
j thejvertical load carried by’ the wheel will sub
portions. .The arrangement is such'that when
. ‘ ject ‘the resilient members to shear stress only, 50 the resilient element 22biisrplaced under com
and-,th'at the‘ tire'member l8 atall times will'be
pressive stress, the radial displacement OfIthe
‘ resiliently supported out'bf metaleto-metal con
resilient material, toward both circumferences
,tact‘with the'hub l0 and its‘?ange II and cap
thereof, will ?atten said grooves so that they
plate [3 so that no transmission of vibration or
approach transverse alignment with said bulges.’
noise to‘ a vehicle ‘employing the wheel is pos 55 The advantages of such arrangement are that the
; sible. ‘ Theuse of the spacer members I 6 and the
" presence of the’hub-flang'e' l2 limit the extent
to which the cap-plate I3'may be drawn toward .
the hub-?ange IL. Thus by controlling the
‘ ‘thickness of the resilient elements 22 it is pos
placing of the resilient elements under compres-r
sivestress does not impose deleterious tension'in
the marginal regions thereof suchaswould be
caused by pressure-imposed bulging, and said
marginal regions are not forced into a position
‘sible to control the extent to which said elements . where they can be cut'by the margins of the
‘are subjected to lateral compressive stress, it also it lateral metal plates.
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being possible to make the elements of such
Other modi?cations may be resorted to with
‘thickness that they will be subjecttono com
out departing‘from the spirit of the-invention,
press’rive stress. The'arrangement is such‘ that 65 or the ‘scope thereof as. de?ned by the appended
the wearing qualitieslan‘d1 resilient characteris
‘tics of the resilient'elements may be retained for '
k9, longer period than would be‘ ‘the case if the‘
claims;
What is'claimed 1S2.
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i 1.. A resilient wheel comprising a the structure
' compression of said elementswas not controlled.
f armed with. a radially inwardly extending ‘?ange;
Furthermore, the mounting of’ the resilientele '70 a hub’ structure" concentric 'therewitnhaving
vments in the wheel is not dependent upon com
radially’
on opposite
outwardly.
sides of extending
the tire‘ flange
portions,
in’s‘paced
disposedv
re;
pression of the elements. Y
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The feature of attaching the resilient elements
' to the hub structure adjacentithe'periphery' of
the elements and attachingthiei-tire structure to 75
lation thereto, respective? resilient elements dis-1 '
posed between said flange and'rthe hub portions
at each side thereof, each of 'saidfresilient ele- , ‘
2,404,581
5
ments comprising a ?at annular body of resil
ient material having a plurality of thin metallic
plates bonded to each of the opposite lateral
faces thereof, bolts anchoring the ?ange-contact
ing plates to said ?ange at the inner circumfer
ential margin of each, and bolts anchoring the
hub portions to the plates that contact the'same
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4. Cushioning means for resiliently supporting
a tire member on a hub, said means comprising a
?at annular body. of resilient material, and sec
tional metallic facings bonded to opposite lateral
surfaces thereof, the facing sections on one side
of the resilient body being offset with relation to
' the facingsections on the other side thereof.
5. Cushioning means for resiliently supporting
a tire member on a hub, said means comprising a
2. A resilient wheel comprising a tire structure.
formed with a radially inwardly extending ?ange, 10 ?at annular body of ‘resilient material, and sec
tional metallic facings bonded to opposite lateral
a hub structure concentric therewith formed at
surfaces thereof, the margins of adjacent fac
one side of its middle with a relatively wide
ing sections on either, side of the body being,
‘radially outwardly extending ?ange disposed at
slightly spaced apart from each other to enable,
one side of the tire ?ange in spaced relation
thereto, and formed at the other side of its mid 15 at least a modicum of relative movement be
tween sections.
dle with a relatively low radially outwardly ex
6. Cushioning meansrfor resiliently supporting
tendingr ?ange, a cap plate disposed on the other
a'tire member on a hub, said means comprising
side of said tire ?ange in spaced relation there
a ?at annular body of resilient material, and
to, bolts securing said cap plate to the outer lat
teral face of. said relatively low ?ange whereby 20 sectional metallic facings bonded to opposite lat
eral surfaces thereof, eachrfacing? section con
the cap plate is determinately positioned at its
sisting of a ?at arcuate plate with end margins
inner circumference, respective resilient elements
disposed radially of the cushion, the end mar
disposed between the tire ?ange and hub ?ange
gins of adjacent sections on either side of the
and between the tire ?ange and cap plate, each of
said resilient elements comprising a ?at annular 25 structure being in confronting relation to each
other.
body of resilient material disposed concentrically
7. A combination as de?ned in claim 6 where;
of the hub and having a plurality of thin metal
in the confronting margins of the plates on one
lic plates bonded to each of the opposite lateral
side of the cushion are angularly offset from the
faces thereof, bolts anchoring the tire-?ange
contacting plates to said flange at the inner cir 80 confronting margins of the plates on the other;
side thereof.
cumferential margin of each, and bolts anchor
8. Cushioning means for resiliently support
ing the other plates of the resilient elements to
ing a tire member on a hub, said means compris
the hub ?ange and to the cap plate adjacent the
ing a ?at annular body of resilient material, and
peripheral margins thereof, which bolts‘ extend
through hub ?ange and cap plate and prevent 85 annular metallic facings bonded to opposite lat:
adjacent the peripheral margin of‘ said plates.
spreading apart thereof.
3. Cushioning means for resiliently supporting
a tire member on a hub, said means comprising
a ?at annular body of resilient material, and thin
eral surfaces thereof, the peripheral face of the
resilient material normally bulging slightly be
yond the inner and outer circumferential mar
gins of the facings and overlying the same and
metallic facings bonded to opposite lateral sur 40 being circumferentially recessed intermediate
said bulges.
‘
faces thereof, each of said metallic facings be
CLARENCE E. WORKMAN. '
ing sectional.
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