вход по аккаунту


Патент USA US2404269

код для вставки
July 16, ‘1946.
Filed March 13, 1945
2 Sheets-Sheet 1
‘33 :31
’ jnvanZZr
July 16, 1946.
Fil'evd March 13,‘ 1945
' - 2,404,269 '
"2 Sheets-Sheet 2
Patented July 16, 1946
George Alfred Bennett, New Barnet, England;
Hilda Mary Bennett executrix of said George
Alfred Bennett, deceased
Application March 13, 1945, Serial No. 582,535
In Great Britain February 2, 1944
13 Claims.
(C1. 301—1)
This invention relates to wheels for vehicles
on a nut I9 which is screwed onto the sleeve and
' locked thereon by burring over the threads pro
and is particularly, but not exclusively, applicable
to wheels for trucks, barrows, perambulators,
jecting from it.
wheeled stretchers and other wheeled furniture
and other vehicles mounted on wheels of small
According to the present invention a wheel for
he moved apart by screwing each rod 13, out of
its sleeve H. A'tyre 2| is inserted between‘the
a vehicle comprises the combination with a sup
port of two heads mounted’ on the support to
rotate about a common axis and to face one an
Each rod [3 carries a mushroom-shaped head
20 and the opposed faces of the two heads are
convex surfaces of revolution about'their common
axis. 'It will be seen that the two heads mean
heads 2|] when the latter are ‘separated as far
other with a space between them, an imperforate,_ '
as possible and this tyre is constituted byan‘irn
hollow and resilient tyre of which the exterior
perforate hollow rubber spherelwith two circular
is a surface of revolution about an axis and
lips or ribs 22 struck abouta common diameter
I which is mounted between the heads with its axis
of the sphere. The tyre is forced between'the
coaxial with the common axis of the heads, and 15 heads 20 in such manner that each head i'sjc’eri-'
means for adjusting one, or each, head axially
tral with respect to one of the lips 22 and‘the
towards the other to compress the tyre between
rods 13 are then screwed into their'respective
sleeves ll so as to move the heads 20 towards
According to a feature of this invention the
one another into the position shown in Figurel
heads and tyre are arranged to interengage to 20 and compress the tyre until it assumes the ,?g'ure
prevent relative radial movement between them
of-eight section in a diametrical‘ plane. as shown.
and, preferably, relative rotation between them.
The invention also includes various construc
tions by which the heads are rotatably mounted
The compression of the tyre also compresses the
air within it so that the tyre is inflated" and
pneumaticallysupported. Each rod 13. is then
in the support with provision for axial adjustment 25 looked to its sleeve l l by a lock-nut 23.__7The
relatively to one another.
diameter of each lip 22 is such that .it will engage
Five constructions in accordance with this in
vention will now be described, by Way of exam
ple only, with reference to the accompanying
drawings in which each of the ?ve ?gures shows‘ ‘
a different construction in half-section on a ver
tical plane through the axle of the wheel.
Similar parts are given the same reference nu
merals in all the ?gures of the drawings.
The construction shown in Figure 1 comprises
a U-shaped support I0 which is secured to the
vehicle on which the wheel is to be mounted. A
the periphery of the associated head 20, when the
tyre is fully compressed, and prevent radial move
ment of the tyre relatively to that head.’
Instead of the exterior ‘of the tyrefbeing'spher- '
ical, it may be spheroidal or any other suitable
surface of revolution. In particular. it maybe
convenient to form’ it withjopp'osed depressions
?tting the heads and serving tolerate the tyre
correctly on the heads as it is inserted between
The construction
shown in Figure ,2 differs
two-part axle is mounted in each arm of the sup’
from that shown in Figure 1 mainly vin that‘ each
port and each axle comprises a sleeve l I having
head 20 is carried by a one-part axle l l ‘which
one end of its bore i2 reduced in diameter and 40 is a running ‘?t in a bearing member formed
screw-threaded and a rod l3 having one end l4
by a sleeve 36. Each sleeve Si] is externally
screw-threaded. The rod is a close ?t in the
screw-threaded- and screwed into a ‘screw-thread
sleeve and at its end [4 is screwed into the por
ed bore 3| in the support it and each. sleeve is
tion I2 of the sleeve. The sleevel I is externally
also formed with a hexagonal flange‘ 32 to receive
threaded at each end to receive the inner races I5 45 a spanner by which it can be turned tocadjust it
of two ball~bearings I6 by which the axle is ro
axially in the support. . A thrust ball-bearing 33
tatably mounted in the support. The races l5
is interposed between each head v2!] and, the ad
are locked to the sleeve by cover-washers I‘!
jacent ?ange 32 to transmit the axialvloadfrom
screwed onto the sleeve. The ballrings are
the head to the sleeve 30 and the support. When
arranged to take both radial and axia loads and 50 assembling the tyre 2| between the. heads,v the
may be replaced by taper-roller bearings. The
sleeves 39 are adjusted to bring the heads '20
sleeve 4 i‘ is thus restrained fro-m axial movement
slightly closer togetherthan is shown in Figure 2 .
while the rod. l3 can be adjusted axially in the
and a U-shaped distance-piece 34 (see also the
sleeve by rotating it by means of a screw driving
detached plan of the distance-piece) is slipped ,
in a slot I8 While the sleeve is held by a spanner 55 over each sleeve between its ?ange 33 and the
an imperforate, and resilient tyre of which the
Each sleeve is then turned backwardly
exterior is a surface of revolution about an axis
’ to tighten its ?ange 32 against the associated dis
and which is mounted between the heads with
its axis coaxial with the common axis of the
heads, and means for adjusting one, or each, head
tance-piece 34 and clamp the latter in position.
The axial load on the sleeves will tend to hold
the ?anges 32 tight against the distance-pieces
so that the parts are securely ‘locked in their
axially, towards the other to compress the tyre
working positions.
between them.
2. A wheel according to claim
The heads 20 are shown in Figure '2 as being
wherein the;
formed with a pattern in low relief formed by i ‘ opposed faces of the heads are each formed gener
pimple-like protuberances 35 which interengage ‘ 10 ally as~a convex surface of revolution about the
with the wall- of the tyre to resist both relative '
radial’ movementand relative rotation between
the tyre'and each head. A dimpled patternIcould
also be used. The pattern on the head thus
servesthe purpose of the lips 22, shown in Figure
1, on the tyre and theselips may be omitted...
Figure 2 also illustrates how the wheel may be
axis of the head.
3. A wheel according to claim 1, wherein the
7 opposed faces of the heads are each formed with
a pattern in low relief to interengage with the
vtyre and prevent radial movement of the tyre
relatively to the heads.
4. A wheel accordingto claim 1, wherein the
opposed‘faces of the heads are each formed gen
The support
erally as a convex surface of revolution about
I0 is mounted to swivel about a vertical axis
passing to one sideof the axis of the wheel, in. a 20, the axis of the head and are each formed with a
dimpled pattern in low relief to inter-engage
_bracket<.3?rwhich is arranged so. that it can be
with the tyre and prevent radial movement and
,clamped onto a tube 3‘! forming part of a tubu
rotation of the tyre relatively to the heads.
~ lar frame of the vehicle.
5. A wheel according to claim 1, wherein the
mThe- construction shown in Figure 3 is an in
mounted as a castor on a vehicle.
tyre is formed externally with two diametrically
opposed circular lips to ?t the peripheries of the
heads and-prevent radial movement of the tyre
version of'that shown'in Figure 2 in that each
, bearing member is inthe form-of an ‘axle 43
'having a screw-threaded-portion that is screwed
pinto-the ‘bore 3| of the support and is locked
in its adjustedv axial position by a‘lock nut M. ,
‘Each axleillisformed with a plain portion 42 of
A reduceddiameter to receive an innerrace 43 com"
.mon totworoller-bearings.“ which are received
V v relatively to the‘ heads. '
61A wheel for a vehicle comprising the com
bination with a support, of two bearing mem—
bers mounted in the support for adjustment to
wards one another along a common axis, two
heads mounted one in each bearing member to
.withinrand support, a tubular extension 45 of
the. associated head 20. The roller bearings are
rotate about said axis but restrained from axial
movement in its bearing member, and face one
another with a spacebetween them, an imper
forate and resilient tyre of which the exterior is
garran'ged'to carry ‘both‘radial and axial loads
' -andlar'e held in position by caps 46 screwed ‘onto
ithe..'extensions 45.. Figure 3 also illustrates how
a surface ofrevolution about an axis and which
, is mounted between the heads with its axis coin
In lthe construction shown in Figure 4,’ each 40 cident with the common axis of the bearing mem
bers, and means for adjusting at least one bearing
.headfis shapedatill to form the inner race of a
the-support Ill may-be clamped directly onto, a
'tubularpart of the vehicle frame.
. r y i
member along the said common axis towards the
ball bearing 5|... ‘Each bearing member is con
other to compress the tyre between the heads.
stituted by-a plug 52- screwed into the appropriate
. 7. A wheel for a vehicle comprising the com
:bore 3| in‘the support and shaped at. 53 to act‘
bination with a support. formed with spaced in
as ,the outerrace of the bearing 5 l .' Each bearing
ternally screw-threaded bores having a common
.member 53 is adjusted axially by rotating it by_
‘axis, of two externally ‘screw-threaded bearing
:me'ansof a screwdriver slot 54 and is locked in
members screwed one into each bore, means for
position by-a lock-nut55. .It will be noted that
locking each bearing member against rotation
‘the diameter ofeach bore ,3! is su?icient to allow
.of-thej,associated head moving intoit when the 50 in its bore, two heads mounted one in each'bear
ing member to rotate about the said axis but re
.heads‘are‘widelyseparated and the construction
strained from axialmovement relatively to its
has the advantage that the width of the» support
bearing member, and an imperforate resilient tyre
. IIL along thelaxis of the wheel is less'than in
those'previously described.
, of which the exterior is a surface of revolution
about an axis and which is mounted between
The construction
' '‘ can'be inverted so’ that the heads provide'the
, outer races and the plugs the inner races of the
the heads with its axis coincident with the com
mon axis of the bearing members and is com
pressed between the heads by rotation of the
bearing members in the directions to move the
{LInlthe construction shown in Figure 3, the sup
» portcomprises a'base' 60 having an arm 6| rigid
heads towards one another.
with it, andan arm 62 pivoted to it at 63. Each 60
head Zllis carried by an axle l I and the axles are
,m'ounted'respectively by ball bearings 64 in the
outer. ends'of the arms Bland 62. The arms
.6 land 62.. are interconnected by a turnbuckle '65
' engagedwith nuts 66' that are‘pivoted at 61 ‘on
lthelarms?l and 62 so that the arm 52' can ‘be
swu'ngtowards and away from the arm 6| to move
appropriate bearing member.
9.- A wheel according to claim '7, wherein each
bearing member in the form of a sleeve which
is formed with a non-circular ?ange, by which
‘ it can be rotated, on its end nearest to the asso
, theiheads 20 't'o’getheror apart.
Q1I=Of~ the .?ve, constructions illustrated. those
' shown in Figures2, 3-and 4 are preferred.
'8. A wheel according to claim '7, wherein each
bearing member is in the formyof a sleeve and
each head is carried by an axle journalled in the
iilQiAv‘vhelel for a ‘vehicle, comprising the com—
. ,1 binationf with a support of two heads mounted
' .cn thesupport to rotate about a common axis and.
'to face one‘another'with a space between them, 75
ciated hm, each head is carried by an axle jour
naled in the appropriate bearing sleeve and the
means for locking each bearing sleeve comprises a .
U-shaped distance member detachably mounted
on it between the flange and the support and’
clamped therebetween by tightening up the bear
ing sleeve on it.
' ‘
10. A wheel according to claim '7, wherein a
thrust ball- or roller-bearing is interposed be
tween each head and the associated bearing
member to transmit the axial load on the head
to the bearing member.
the support and restrained against axial move—
ment relatively thereto and which parts are
formed with interengaged male and female screw
threads so that they can be adjusted axially rela
tively to one another by rotating one relatively to
11. A wheel according to claim 7, wherein each
bearing member and the associated head are
the other,
shaped to form one the inner race and the other '
two internally screw-threaded sleeves mounted
coaxially in the support to rotate about their
the outer race of a single row ball- or roller
13. A wheel according to claim 1,
comprising ‘
bearing completed by balls or rollers inserted 10 common axis but restrained from axialmove
between them and arranged to transmit both
ment and two externally screw-threaded rods
radial and axial loads.
extending one through each sleeve in screw
12. A wheel according to claim 1, wherein each
thread engagement therewith and carrying the
head is carried by one part of a two-part axle of
two heads, respectively on their adjacent ends.
which the other part is rotatably mounted in
Без категории
Размер файла
515 Кб
Пожаловаться на содержимое документа