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Патент USA US2410470

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Nov.v 5, 1946.
E. E. WALLACE
COMBINED WHEEL lV[0Ul“1'].‘IX“I('rv AND BRAKE THEREFOR
2,410,470
I
Original Filed May 7, 1943
m3. ’
Patented Nov. 5, 1946
_ lTED ' STATES ; PAT‘
‘1
2,410,470
*'coMB1NEn WHEEL MOUNTING AND BRAKE
'
THEREFOR
Edward E. Wallace, Cleveland Heights, Ohio ,
Original application May 7, 1943, Serial No. v‘
485,979. Divided and this application August
17, 1944, Serial No. 549,935
.8 Claims. (01. 188-48)
i"
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annular bead 9 on the adjacent side wall of a
This invention relates to a mounting for a i.
wheel having incorporated therein a brake and
The wheelv is, for
illustrative purposes, shown mounted on an axle
tire carcass ill. The innerside portions of the
annular elements 4; 4a, and end walls of the
. chamber 6 form seats for :annular keying ele
which in turn is mounted on the outer end vof a
supporting member for an airplane such as shown
' in my co-pending application ?led April 14, 1943,
_ 8a to lock the carcass ID in position around the
- operating means therefor.
ments ll, Ila, which co-operate with the ribs
wheel rim. As shown, the carcass l0 comprises a
tread portion Illa, which may be provided with
This application is a division of my co-pending '
suitable capping material (not shown), side walls
application Serial No. 485,979, ?led May '7, 1943. 10 having the heads 9 and a central web [2 extend
ing radially inwardly from the tread portion l?a
One object of the invention is to provide an
throughout its circumference. The inner pe
improved mounting for a wheel having incorpo
Serial No. 482,991.
,ripheral portion of the web 12 is enlarged laterally ‘
rated therein a brake and an ‘operating means
on its‘ opposite sides throughout its circumference,
Another object of the invention is to provide 15 as shown at l2], which enlargement ?ts‘into a ,
recess l3 formed by cut-aways in the opposed
an improved mounting for a wheel consisting
or inner ends of the keying-elements ll, Ila.v At
of a bifurcated member, wherein is provided a
spaced points throughout its circumference the
brake for the wheel and its operating means.
enlargement 12' is formed with a plurality “of
Other objects of the invention will be apparent
to those skilled in the art to which my invention 20 spaced transverse through. openings M each in
registry with a through opening M’ formed in one
relates from the following description taken in
of the keying elements ll, Ha, whereby-counter
connection with the accompanying drawing,
therefor.
,
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U
sunk screws l5'may be mountedin the opening
l4 and I4,’ and threaded into threaded openings '
Fig. 1 is a, view, partly in elevation and partly
in section, of a wheel, its mounting, brake and 25 14" formed in the other keying'element to secure
these parts together with the enlargement I 2'
operating means,_ embodying my invention.
locked between them. Each keying element ll,
Figs. 2 and 3 are sections on the lines 2'—2
wherein.
.
and il-—3,v respectively, of Fig. 1.
'
'
' Ila throughout its circumference is extended
outwardly, as shown: at H’, over the side wall of
In the drawing, I indicatesa wheelaxle sup
ported at its opposite ends in the depending arms 30 the adjacent chamber 8, for engagement with
the adjacent bead 9, whereby the keying element
or bifurcations Ix of a support Ir’, which may
consist of a retractile member as shown in. the
aforesaid application Ser. No. 482,991, the axle '
and bead may form a suitable seat for the walls
of an inner-‘tube it. ‘As shown, the web l2, keying
elements H, Ila, beads 9 and carcass side walls‘
35 and tread portion thereof formv cavities for the
pins la (see Fig. 1).
.
inner tubes it, each of which may be in?ated or
The axle I‘ is surrounded by'a sleeve 2 with
de?ated through a, suitable valve in a nipple (not
which parts of suitable anti-friction ‘bearing
shown); By‘preference, each wall 8 is formed
cages 3 and the inner bearing races 3a thereof
throughout'its circumference with a plurality of
(the bearings being preferably of the roller type)
engage. The wheel rim consists of twoannular 40 openings 8’ each in registry with a through open
ing [8 formed in the adjacent bead 9, so that
elements 4, 4a, in side by side relation and con-'
countersunk screws 19 extending through these
nected together by a plurality of dowel pins 5 (two
openings may be threaded into openings lBa
only being shown). The walls of .the annular
formed in the adjacent extensions II’ to secure
elements, adjacent their outer portions are off-set
radially to form annular chambers 6 to ac 45 the bead 9 between these parts.
It will be understood that the construction of '
commodate the bearing cages 3, the outer bearing
the tire forms no part'of the present invention
races having engagement with the side walls of
as it forms the subject-matter of my aforesaid
the chambers. The side wall of each chamber 6
original application and that ‘the tire and its
adjacent its outer end is (11) provided internally
being ‘preferably ?xed to ‘the arms byssuitable
with screw threads to take a ring nut T. which is 50 mounting may be of any desired form of con
tightened against the adjacent cage 3 to secure it
struction.
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in the adjacent chamber 6, and ,(b) extended
radially circumferentially. asshown at 8. to pro
20 indicates as an entirety a brake and its op
erating means, the operating means beingroi' the
vide an inwardly extending rib 8a, which laps
hydraulic type, but electrically‘ controlled." 1 1
over and has interlocking engagement with the 65
By preference a brake mechanism is provided
2,410,470
3
4
at each side of the wheel, but as these mech
anisms are similar in construction only one there
of will be described. The walls of the chambers
l are shaped to provide enlarged annular recesses
2| outwardly of the ring nuts 1 to accommodate
the sets of annular braking elements, each of
which sets consists of an inner bearing member
recess adjacent the outer end thereof. The in
ner wall of the, member 32 forms a guide for the
outer end of an endwise movable pin 33. The
inner end of the pin 33 is arranged to engage the
wall of the recess 3| in the adjacent rod 23. The
pin 33, adjacent its inner end is provided with
a collar 33' which slidahly engages the walls of
23 suitably ~fixed to the walls of the adjacent re
the recess to guide and support the inner end
cess 2l, a plurality ofannular friction members
thereof, and between the collar 33' and the mem
24, and an outer pressure member 25. The side 10 ber 32 is a coiled spring 34, which normally tends
walls of the recess are splined as shown at 2la '
to move the pin inwardly, so that due to the
in Fig. 2 and alternate friction members 24 are
engagement ofrthe pin 33 with the wall of the
provided on their outer peripheries with com
recess 3| the spring pressure will be exerted on
plementary splines ?tting the splines 2m to pre
the annular member 32 and through it to the
vent rotation thereof, whereas the inner periph 15 plunger 26 to move the latter outwardly. When
ery of the pressure member 25 is provided with
the thrust rod 28 is moved upwardly, the spring
an inwardly extending collar 25a,'the inner wall
34 will yield to permit movement of the pin 33
of which is splined, as shown at 25a’ in Fig. 2 ‘
and the inner periphery of the other friction
members 24, are provided with complementary
splines ?tting the splines 25a’ to prevent rota
tion thereof.
26, 26,,indlcates a pair of plungers slidably fit- ,
ting diametrically related throughopenings 260
outwardly.
The upper end wall of the cylinder 30 is pro
vided on the lower end of a casing 35. The cas
ing 35 encloses thevalve, which controls the flow
of the fluid under pressure to the cylinder 30 and
its discharge therefrom, and the operating means
for the valve. The external wall of the casing 35
formed in the adjacent arm is, each plunger 25 adjacent its upper end is provided with screw 7
being i‘provlded at itsinner'end with aiscrew
threads which engage screw threads on the wall
threaded extension which is threaded into the
of the opening 30, whereby the casing is ?xed
adjacent pressure member 25, whereby ‘movement
therein and may be adjusted endwise ofthe open
of the plungers inwardly will ‘exert pressure on
ing to vary the stroke of the piston 23’. The valve
the friction members 24 and movement thereof 30 consists of (a) a sleeve 36 ?tting the inner wall
outwardly will relieve the pressure. The mount
of the casing 35, the sleeve and casing being
ing of the plungers 26 in the openings 26a pre
formed with a plurality of alined ports for the
vents rotation of the pressure member 25.
flow of the ?uid to the cylinder at opposite sides
The axle l and plungers 2B, 26, are formed with
of the piston therein and (b) a reciprocatable
‘alined through‘ openings 21, 21', respectively, in 35 plunger 31 forming the valve element and having
registry with an opening 21a extending through
spaced annular recesses 38, 38', arranged to reg
the adjacent arm Ir.
7
,
ister with these parts for in-?ow and out-?ow of
, A thrust rod 28 extends through’ these open
the ?uid, in the following manner, the plunger
lugs and is removably connected at its upper end - - being shown in its down position;
to the lower end of a- piston rod 29 having at its 40 .39 is an inlet duct connected at its outer end
,upperend a piston 26' which is reciprocatable in
with the ?uid supply and connected at its inner
an enlarged opening 3|! (also formed in the arm
end to alined inlet ports 40, 4ii',‘in registry with
Ir). The walls of the opening 36 form the side
the recess 38.
'
walls of acylinder for the piston 23'. , Y
The port 40' is connected to a duct 41 leading
,The inner side wall of the opening 21' ‘formed 45 to the upper end of the cylinder. 42 indicates a
‘in each plunger 26 is of convex shape to provide
duct leading from the lower end of the cylinder
a cam and the thrust rod ,28 is provided with
and‘
connected to the alined outlet ports 43 which
annular recesses 3| the walls of which endwise of
are in registry with the recess 36';
The recess ,
the rod are concaved substantially complemen
tary to the convex- walls of the. openings 21' to 50 38' is in registry with the alined outlet ports 43,
43', which are connected to a duct 44, the latter
form cams which engage theconvex walls of the
being connected to a suitable discharge pipe lead
openings. 21’. When these parts are in normal '
ing
to a suitable sump. Upon movement of the
position, that is, pressure on the braking elements
plunger 31 to its other or upper position; the inlet
is relieved, the recesses 31 are in alinement with
the plungers 26 (as shown in Fig. 1), but opera 55 ports 40, 40' are closed thereby and the recess
36 registers with alined outlet ports 46 formed in
tion of the thrust rod upwardly, due tooperation
the casing and sleeve, which ports at one side
of the piston 23’, will effect a co-action between
thereof are connected to a branch duct connect
the walls of the recesses 3| and the convex walls
ed to the duct 4i and at their other side are con
view of the plungers 26 and move the latter inwardly, nected
by a duct 46’ to the discharge pipe 44,
whereby a braking action on the wheel will take
place. 'It will be obvious that if the .piston 23' 60 whereas the outlet ports 43, 43’, are closed by the
plunger and the recess 38' registers with alined
is arranged to be at the upper end of its cylinderv
inlet. Ports 41 formed in the casing and sleeve,
when the ‘camming elements are in normal po
sition, operation of the piston‘ 29' downwardly
,7, will eifect a braking operation.
Means are ‘provided f r moving the plunger 26
I outwardly whenjthe t 1 .__,_t rod 28 moves into
normal position, to insure relief of the braking
elements or slippagefherebetween. These means
are preferablyinountedfv in the plunger 26, the
outer end portions of whichv are recessed to ac
cE'
odate the relieving means, each of'which
comprise the following:
7
_
~
which ports at one side thereof are connected
with the inlet duct 39 and at their other side
connected by a branch duct 48 with the duct 42.
.
Accordingly, in one position of the plunger, the
inlet duct 33 for the ?uid is connected with the
cylinder at one side of the piston 29’ and the
cylinder at the opposite side of the piston is con
70 nected to the discharge pipe 44 and in the other
position of the plunger these connections are re
versed.
'_
As shown in Fig. 1, the face of the upper and
d32~indicates aif- annular member having screw
wall of the cylinderand the lower face of the
threaded engagement with theinner wall of the 75 piston 23' are relieved annularly to insure ?uid
pressure against the piston when it is at either
end of the cylinder and is to be moved toward
its opposite end.
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6
end, of a wheel having an axle supported at its I
opposite ends in the bifurcations of said- mem
ber'and a hollow member surrounding said axle,
one end of said hollow member being shaped to
The operating means for the plunger 31 con
sists of a double acting solenoid comprising
form an annular chamber, and a brake compris
spaced coils 49, 49' and a core 50 connected to
ing a series of annular disks surrounding said
the upper end of the plunger 31, the circuits for
axle and mounted in said chamber for movement
the coils 49, 49' being separately closed to ener
axially of said axle, an annular pressure mem
gize either coil to effect movement of the core
ber mounted in the outer end of said chamber
from one position to the other position to operate 10 and provided with an inwardly extending cir
the plunger. It will be understood that the cir
cumferential wall, alternate disks being splined
cuits for the coils 49 or 49' are simultaneously
to the side wall of said chamber and the remain
closed by a suitable switch so that both plungers
ing disks being splined to said wall, spaced
28 will be moved together in the same direction.
plungers mounted in the bifurcation related to
What I claim is:
15 said chamber for movement parallel to said axle
1. In a wheel, the combination with an axle
and connected to said pressure member, cams for
and an arm in which one end of said axle is
operating said plungers in one direction and
mounted, of a tired wheel mounted on said axle,
means for operating said cams.
said wheel including a rim for the tire, the end
6. In a wheel, the combination with an axle
portion of said rim adjacentsaid arm being ofl_ 20 and a bifurcated member supporting the oppo-. ‘
set to form an annular chamber, braking ele
site ends of said axle of a wheel having a rim
ments mounted in said chamber, said arm being
rotatably mounted on said axle, one outer end
formed with an opening extending, radially of
portion of said rim being enlarged to form an
said axle, and means mounted in said opening
annular chamber, braking elements consisting
and operatively connected to said braking ele
of a series of annular disks in side by side rela
ments for operating the latter.
tion in said chamber, a‘ collar in said chamber
2. A wheel as claimed in claim 1 wherein said
surrounding said rim, alternate disks being
braking elements consist of a series of annular
splined to the side wall of said chamber and the
disks, alternate disks being splined to the side
other disks being splined to said collar, a plunger
wall of said off-set, a pressure member having 30 mounted in the bifurcation adjacent said cham
a collar within said chamber and to which the
ber to move inwardly parallel to said axle to op
f other disks are splined and diametrically related
erate said disks into frictional engagement, a
plungers disposed parallel to said axle and en
thrust rod carried by said bifurcation and mo-v
gaging said pressure member and arranged to be I
able radially of said axle, means for reciprocat
simultaneously operated by said operating means.
ing said thrust rod, and co-acting elements be
3. In a wheel, the combination with an axle
tween said thrust rod and said plunger arranged '
and an arm in which one end of said axle is
to move the latter inwardly when said rod is
mounted, of a tired wheel mounted on said axle,
moved in one direction.
said wheel including a rim for the tire, the end
7. A Wheel as claimed in claim 6 wherein said
portion of said rim adjacent said arm being off 40 plunger is ?xed to said collar and a spring oper
set to form an annular chamber, braking ele-‘
ments mounted in said chamber, and means .car
ried by said arm for operating said braking ele
said plunger for moving the latter outwardly to
ments, said operating means consisting of a cyl
the opposite direction.
inder and a piston, a rod between said piston and
the braking elements, means for supplying a, fluid
under pressure to the opposite ends of said cyl
inder, a valve for controlling the flow of the
ated element is provided between said rod and
release said disks upon movement of said rod in
8. In a wheel, the combination with an axle
and a bifurcated member ?xedly supporting the
opposite ends of said axle, of a wheel having a
rim rotatably mounted on said axle, one end por
?uid to either end of the cylinder and its dise
tion of said rim being enlarged to form an annu
charge from the opposite end of the cylinder and 50 lar chamber, a collar in said chamber surround
means for operating said valve.
ing said rim, braking elements in said chamber
4. In a wheel, the combination with an axle
consisting of a series of disks, alternate disks be
and a bifurcated member supporting the oppo
ing splined to the side wall of said chamber and
site ends of said axle, a rim [around said axle,
the other disks being splined to said collar, dia
a tire’ mounted on said rim, one outer end por
tion of said rim being enlarged to form an an
55 metrically related plungers disposed parallel to
said axle in the bifurcation related to said cham
ber, connected to said collar and movable in
axle, a plurality of annular braking elements in
wardly to operate said collar and effect frictional
side by side relation in said chamber, and means
engagement between said disks, said bifurcation
, in the bifurcation adjacent said braking ele 60 being formed with an opening extending radially
ments ‘for operating the latter, said operating
of said‘ axle and said axle being formed with a
means including a hydraulically operated ele
through diametrically extending opening regis
ment reciprocatable in said bifurcation and a
tering with said radial opening, a thrust rod ex
plurality of spaced devices slidably mounted in
tending through said openings, means for re
said bifurcation and arranged to be operated by 05 ciprocating said rod, and co-acting elements be
said element to effect engagement‘of said brak
tween said rod and said plungers for simultane~
ing elements one with another.
ously operating the latter inwardly when said rod
5. In a wheel mounting, the combination with
is moved in one direction.
‘
a supporting member having a bifurcated outer
'
EDWARD E. WALLACE.
nular chamber, bearings between said rim and .
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