Note: Descriptions are shown in the official language in which they were submitted.
TIRE C~ART 1037434
. . ~ , ,~
This invention is related to wheeled dollies which are used
` for removing, temporarily storing and mounting of vehicle wheels
` such as tractor wheels, truck wheels and the like. More specific-
ally, the invention is related to dollies which have a lifting frame
; portion and are used in the removal and installation of large vehicle
; wheels. Several prior art devices are known for use in removing
and mounting large vehicle wheels on trucks, tractors, and the like.
These prior art devices are constructed with a main frame having
upright standards and a second frame supported on the main frame ~;
10 and movable up and down on the upright standards. Some of the prior
1 .. .. ...
art devlces have no structure which will enable the lifting frame thereo~
to be tilted. Tilting is advantageous and often necessary in removLng
and mounting the large wheels, Those devices which do have tiltable
frames involve a complex structure of jacks and locks to tLlt and retain
the structure in a tilted position. The prior art tiltable devices are
positionable in predetermined positions only and they are not adjustable
between these positions. The devices with tilting means are generally
quite prone to mechanical failure due to the complicated locking mechanism. ~ ;
Also, nearly all of the prior art devices use rollers and/or sliding joints -
on the uprights of the frame. ~After a period of years these usually ~;
become dirty and slightIy bent, thus difficult to use or inoperative.
Al~o, the locks, etc. can be easily jammed or broken if slightly abused. `'
; ,. ~ , .
In one specific embodiment, a dolly structure is provided
~I with a U-shaped frame having spaced sides and an open front wlth ;
'I casters on the bottom thereof. A lift frame is longitudinally movabl~v
mounted on the sides of the U-shaped frame and it has a cross member
} with a sleeve rotatably mounted thereon. The lift frame has a pair of -
~ parallel stanchion members mounted on the sleeve and extending
;'
upward. A second cross member is slidably mounted on the stanchion
30 members and it is raised and lowered by a jack or the like. 4 pair
' q~ :'
; -2- ;
.,..... . ..... .... ........... : . ... ., . . . . . ~ .
037434
of arms are transversely movably mounted on the second cross member
;.
and~ extend forwardly to in use reach underneath a tire or the like.
An adjustable coupler between the lift frame and the frame provides
for adjustably tilting the lift ~rame relative to the ground for the purpose
of til~ing a wheel when it is supported by the structure.
In another specific embodiment, a dolly structure is provided
with a U-shaped frame having sides and an open front with casters.
A lift frame having a pair of stanchion members is mounted on the `;~
frame with the stanchion members adjacent the frame sides. A cross
,~' 7 1.. ...
member is slidably mounted on the stanchion members and it is raised -
and lowered by a jack or the like. A pair of arms are transversely
' ~ . . J . ~ ! ' :
movably mounted on the cross member and extend forwardly to in ;; ~ ;
use reach underneath a tlre or the like.
One ob~ect of this inven~ion is to provlde a ~ire cart or dolly
structure overcomlng the aPoremention~id clisadvantages of the prior
art devices.
Still, one other object of this invention is to provide a tire
cart or dolly structure having~an adjustably tiltablè lift frame which
pivots transversely relative tof the jframe of the cart. `
Still, another object of this invention is to provide a tire cart
structure which ùas a U-shaped frame that has a longitudinally movably
mounted lift frame that ls equipped with transversely movable lifting ;~ ` -
arms that can be extended to accommodate large multiple wheel assemblies.
Still, another object of this invention is to provide a tire cart
which has a U-shaped frame that has rigidly mounted stanchion members ~ ;
which vertically movably mount a pair of lifting arms for handling ;~
vehicle wheels. `
? . . ~i .-, , ~ . .
, Still, another object of this invention is to provide a tire cart
structure which has a rugged construction, a minimum nurnber of ;; i i
moving parts and which is constructed and adapted to be used for ~iij
... ~.. ~.,
handling large size weighted or liquid filled tractor tires or the like.
. ~ ' , .
r~ 1037434
Various other objects,advantages, and features of the inven-
..
: tionwill become apparent to those skilled in the art from the following ~
. .~. .
. . ., -. .
discussion, taken in conjunction with the accompanying drawings, in
which:
, Fig. 1 is a side elevation view of an embodiment of the tire
cart of this invention with the lift frame in a raised and tilted posi- ¦
, ., ,~,; .
tion. A set of dual wheels are shown on the lift frame in dashed lines;
Pig. 2 is a rear elevation view of the tire cart with the wheels
as shown in Pig. l;
Fig. 3 is a sectional side elevation view of the tire cart shown
.,, i . ,
in Pig. 1 with the llPt frame in a lowered and downward tilted position.
This view i9 taken through a mid portion of the structure as Indlcated
by line 3-3 in Eiig. S. The extenslon for the shown arm of the ll~t
frame Is shown In a spaced relation above the arms o~ the ll~t ~rame;
Pig. 4 is a top plan view of the tire cart shown in Fig. 1 alone
with the stanchions in a vertically disposed position. Extension mem- I
.. i . ...
bers for the arms are shown in dashed lines;
Fig. S is a rear elevation view of the tire cart shown in Pig.
J; 1 with the lift frame in the downwardly tilted position as shown in ;
~ Fig. 3;
' ~ Eiig. 6 is a front elevation view of the tire cart shown in Fig.
1 with the lîft frame havlng the arms in a horizontal position and the
stanchions in an upright position as shown in Fig. 4;
:, , ;~
Fig. 7 is a side elevation view of another embodiment of the
i ~ tire cart of the invention with the lift frame shown in a raised position.
1 A dual wheel assembly is shown on the lift frame in dashed lines; ;'~
'' I . .
Fig. 8 is a front elevation view of the tire cart shown ln Fig.
7 with the lift frame in a lowered position; ;
,.
Fig. 9 is a rear elevation view of the tire cart shown in Fig. 8;
30 and
.1 .. .
'
~ 4 ~
~037434 ~ :~
~_ Fig. 10 is a top plan view of the tire cart shown in Fig. 7. - -
Extension members for the arms are shown in dashed lines. .:
. ~. . ..
~ The following is a discussion and description of preferred ;';~; ~
; ...................................................................... .,,j . .
-' specific errbodiments of the tire cart structure of this inventionq ',
;, . ~ .
such being made with reference to the drawings, whereupon the same
; i,: :.
; reference numerals are used to indicate the same or similar parts '~.''!" ~'' '
'~ and/or structure. It is to be understood that such discussion and '
: , description Is not to unduly limit the scope of the invention,
. Referring to the drawings in detail and in particular to F'ig, ' - ;
I which shows a tire cart, (1), of this invention, indicated generally
~ at 10, with a set of dual wheels, indicated generally at 12,; supported
':! thereon. The tire cart 10 includes a U-shaped frame, indLcated ,
. ;, generally at 14 whlch rests on the gralnd and supports a llet erame ~, ,,
.. ~ ;,.;,,.
structure, incllcated generally at 16. In use ~he llft franle 16 supports i
,' the wheels 12,
., The frame 14 is U-shaped with the front being ope n and a trans- '~"!~", ' '
verse member at the rear, The frame 14 has sLdes 18 and 20 with '~
~ 1 . ~ -.. -
,;' caster wheels 22 on the opposed end of each side. The side members j:
~ . ~
i' i~ 18 and 20 are essentially parallel and rigidly secured as shown in Fig, ;. ~;,
. .j .,, ~ .
`.;'J~ 20 4, Preferably, the side members 18 and 20 are tubular with the end !,~''',, ',~'.'
;'i.. l ~ ;` .' '' '
portions having a caster mount constructed as shown, The casters ~ ;
.. ,:, .. .
, 22 are fully rotatable to provide for easy manipulation of the tire .,i:,
cart 10, !'~
,."j '`~ ' , '
l The lift frame 16 is longitudinally movably mounted on the frame ` .i~ ',':
¦. 14, The llft frame 16 has side members 2~ and 26 slldably movably ~ ',
mounted on the frame sides 18 and 20, respectively, The ILft frame `
.. .. .
~ side members are connected by a cross member 28 that is rigidly
, . . ..
secured therebetween. The side members 24 and 26 preferably each
.,.j :.:
' 1 have an inner portlon disposed between the frame sices 18 and 20
and an upper portion resting on top of the frame sides 18 and 20, ~'
-5- ,,
.
~0374 34
Each end of each side member 24 and 26 has a loop extending around ';--
~ ` the frame sides 18 and 20 as shoun to function as a retainer for keep-
~ing the side members 24 and 26 on the frame sides. ;~
..The cross member 28 is externally cylindrical and has a sleeve ;^
"'~ 30 pivotally mounted thereon, Another cross member 32, referred `:
., to hereinafter as the third cross member, is rigLdly mounted between
~, the side members 24 and 26 and spaced to the rear of member 30, h
: ' base member 38 is rigidly secured to the sleeve 30 and forms a support-
. . .: . ,
ing structure for the upright portions of the lift frame. The base 38
is a channel member having a cross-sectional U-shape that opens
". ~
downward and is rigidly secwred to the sleeve 30, The lift frame ;,
.. ... .
16 has a pair of upright or stanchlon members 40 and 41 rigldly ;.
.. ..
.. , secured to the b~se member 38. The stanchion members ~0 mollnt .; .
,~;,~ ,
; ', a vertically movabLe cross member 42, gene.rally reEerrecl to here- "
,,.; :
,' ~ in as the second cross ~member, The upright or stanchion members
.. , 40 and 41 are rigidly secured to the base member 38 and extend
",:..
, radially from the sleeve 30, The second cross member 42 has sleeve
,~,; , ~:
.:. rrembers 4~ and 46 rigidly secured to the opposite ends thereof with the :
sleeves 44 and 46 being slidably mounted on the stanchion members 40 .
i' 3 ~:
;; and 41, respectively. The sleeves 44 and 46 are preferably elongated
`~' as iLlustrated in the drawings and have the second cross member 42
. ~ attached at their upper end portion and braces 48 and 50 between ;
lower portions of the sleeves 44 and 46 and at mid portion ~f the
~ second cross member 42,
r~ Upright wheel support members 52 and 54 are rigidly secured
!
.~ to the second cross member 42 and the sleeves 44 and 46, respectively.
.~ I The upright wheel support members 52 and 54 extend upward a sub-
`, stantial distance above the second cross member 42 to in use provide
a support for wheels or tir_s carried on the cart, The upper end
portion of each of these upright members 52 and 54 is provided with
;,~' ~.
' ;, 6
. ~ .
" ~037~39L ~:
.. :-
~ a ;llotch56 and 58-,, respectively. When one or more wheels are carried -~
.. . ,, ~ .;.: ~ .
on the cart as illustrated in E;ig. 1 a chain 60 is looped around the ~ ~
..~ ,.~ ....
wheel or wheels and links of the chain are engaged in the notches ` `
56 and 58 to secure the wheels on the lift frame 16. Raising and lowering -
,, ~ . ..
of the lift frame 16 is accomplished by a jack 62 positioned between !~
; f ', ' .'
the mid portion of the second cross member 42 and the base 38 on ;
the sleeve 30. The jack 62 is preferably a hydraulic jack of sufficient
capacity to adequately and safely raise and lower large heavy ~multiple
l wheel assemblies.
.; 10 The lift frame has a tilt arm on its lower portion. The tilt
;: arm has arm-like members 64 and 66 rigidly secured to opposed
, ,, ;; . .
ends of the base 38 that extend rearwardly and are connected at a
plate 68 disposed over the third cross member 32. A threacled member
~I 70 is plvotally mounted with the thlrd cross member 32 and extends
; I! upward through an aperture in plate 68. A nut 72 is positioned on
top of the plate 68 and engaged with the threaded member 70. The
threaded member 70 and nut 72 and their connection between ~he sta~
',; j tionary portion of the lift frame and the movable or tiltable portion
i, ~ of the lift frame provide~ an adjustable connection between them. This
.
~; ~ 20 adjustable connection is used to precisely and accurately adjust tilting ;
. j~ of the lift frame relative to frame 14 and the ground. Tilting the
,,`~1 j . . .
movable portion of the lift frame 16 is accomplished by adjusting the
position~of the nut 72 on the threaded member 70. Adjusting the position
of the nut 72 on the threaded member 70 moves the tilt arm relative
to the third cross member 32 and frame 14 which rotates the sleeve
,., I ,, .
30 on the firs~ cross member 28. ;
The lift frame 16 has a pair of arms indicated generally at 76 ll '
which are transversely movably mounted on the second cross member ;`;
' ~ 42. The arms 76 are positioned underneath a wheel or a wheel assembly
30 when it is on the cart. Each arm of the pair of arms is consCructed
.: . ~ ;.
,: ~ ;.. ,
37434
~Similarlyand the arms are indicated individually at 78 and 80. The
~ .
.. . .
arms 76 are generally L-sh-~e43ed with the elongated por~ion thereof
extending toward the open front and the shorter portion extending
- upward. The arms 76 are slidably movably mounted on the second
cross member so their relative spacing can be adjusted as well as
their position in relation to the sides of the frame 14. Fig. 3 shows
arm 80 in its mounted position on the second cross member 42. The ~
....
elongated portion oP arm 80 is rigidly secured to an upright portion 82 ;
at the rear thereof. The upper end of the arm is constructed in a hook ~ -
10 like fashion and hooked over the second cross mem`ber 42. The upper
:........ ,
portion of arm 80 has a top 84 rigidly secured to the upper end of the
upright portion 82 and a rear portion 86 rlgidly secured to the top
. . . ~
84 and extending downward over the back slde of the seconcl cross
~, member 42. The upper encl portlon o~ arm 80 Is ~upportecl by the
. l ;,
l second cross member 42 and it is slidable transversely on the second
i~ cross member 42. Arm 78 is constructed similar to arm 80 with ;
the upright portion indicated at 88, the top indicated at 90 and the
; rear portion indicated at 92, The arms 76 are preferably constructed ~ -
,~;
,with at Least the elongated portion of the individual arm members 78
20 and 80-being generally rectangular in external Form. The arms 76
are construc~ed so that ~hey can have arm extension members mounted
wlth the individual elonga~ed portions of the arms ~o extend the reach
~ i ..
~ 1~ of the lift frame 16 so it will accommodate large multiple wheel assemblies.
.; ,~ , . ~
; I A pair of arm extension members are used to extend the axms 76.
One o~ the arm extension members 94 i9 shown in Fig. 3 in a displaced
;~ l and spaced position above arm 80. In Fig. 4 the extension members
~ 9~ and 95 are shown in dashed lines in place on the arms 76. The arm
. ..
extension members are preferably rectangularly shaped channel members
which can be easily sLipped over the rectangular exterior form OI ~he
30 individual arm members 78 and 80. In practi~e, the extension members
-8-
.~:
,
,,:
37434
have been elongated U-shaped channel members with an essentially
-~ rèctangular interior open on one side so they will overlay the arm mem-
- bers 7~ and 80. ln practice, it has been found that it is not necessary ` ~ ~ `
.. '. , ~:
to rigidly secure the extension members to the arm mernbers because
~.,; ..
the weight of tire or wheel assemblies carried by the car~ holds them
firmly in place. With the extension members mounted on the arms 76 ~;
, the lift frame 16 is preferably positioned on the U-shaped frame 14
', as far rearward as possible as shown in Fig. 1. This is done so the
caster wheels 22 will be spaced as nearly as possible to an equidistant
relationship relative to the center of gravity of the load. ,~
The tire cart 10 of this invention can be used for removing .? :. .;;
the wheels from a vehicle such as a tractor, storing the wheels once
they have been removed and in remounting the wheels on the vehicle.
si",l . .
3 To use the tire cart In removing the wheels from a vehlcle It Is posltlonecl
wlth the ll~t frame 16 in a clownwardly tllted ancl lowered posll:lon as ;
shown in E;igs. 3 and 5 then aligned with the arms 76 adjacent to under~
neath portlons of the tire of the wheel assembly. Once the arms 76 ~: :
,~ are generally posltioned underneath a wheel assembly the lift frame
16 can be tilted and/or raised as necessary to bring the arms 76 and
upright standards 50 and 52 in contact with the wheel assembly. Of ~ ~ ¦
~ 1~ course, in order to posltion the tire cart 1û with the arm 76 ~nderneath s~;:
2~i the wheel it is necessary for the vehicle to be jacked up or otherwise ,
supported so the wheel is off of the ground. The casters 22 on frame
'~1 14 facilitate easy movement of the tire cart and positlonlng of same.
il When the arms 76 are in place the chaln 60 Is looped around the wheel
or wheels and secured In the notches of the upright members 52 and 54.
` l After the wheels have been unbolted from the hub or the hub assembly
~ ~ . .....
dlsconnected from the vehicle the lift frame 16 is tilted and/~r raised , I
as desired to remove the wheel assembly. The jack 62 is used to ~
control the vertical position and the nut 72 of the acljustable connector ~ :
- 9
.
.. . :
~J3~7~3~
is u~sed to control tilting. Once the wheel or wheels l~ve been removed --
, , , ~ . ...
from the vehicle the lift frame 16 is tilted to a position somewhat
as illustrated in Fig. 1 for temporary storage. In order to tilt the
lift frame 16 the mount 72 is turned on the threaded member 70. With ;
.. , .. '
a load on the lift frame 16, arranging it in the tilted position causes
"~
: l; ' the wheel or wheels to be urged by their ~n weight to remain in ~
,~ ..................................................................... ... .
contaGt with the upright members 52 and 54 thus be supported in a stable i~
manner. In using the tire cart 10 to replace the wheel or wheels on a
"
! vehicle the lift frame is tilted to the ap~priate position by adjusting
the nut 72 on the threaded member 70 and the jack 62 is used to control ;~
.. ...
the vertical position of the lift frame 16 and the wheel or wheels. Once
the wheel or wheels have been secured on the vehicle the chain 60 is ~,
rennoved and the llft frame 16 lowered or appropriately tllted to remove
`~ it from the wheel or wheels. A very important feature oE thl~ Inventlon
is the tiltlng and liftlng features. The structure whlch tilts ancl lIfts ``;
~¦ ~he lift frame is constructed so the lift frame can be precisely and ~
.;, I
accurateLy adjusted in Its tilted and elevated position. This tilting and
; ~ lifting feature is extremely helpful to the mechanic who must precisely
control the position of large and often extremely heavy wheel assemblies
! 20 when assembling or disassembling tractors and other vehicles. In practi~e
it has ~been found that the tilting feature is particularly important becau.~ie
it offers the mechanic an accurate control of the tilted position which
. l~ is not~ossible with the prior art devices as discussed hereinabove.
Another embodiment, (2), of the tire cart oP this invention is
` ! .
shown in Sheet 3 of the drawings in Fig~. 7-10, and indicated generally
at 100. The tire cart 100 contains a U-shaped frame indicated generally
at 102, which supports a lift frame structure, indicated generally at
104. The lift frame ~structure 104 in use supports one or more tlres,
;' wheels or wheel assemblies as shown~n'the dashed lines of Fig. 7,
~¦ 30 wherein the wheel assembly is indicated at 106.
:-., . .:
,,,~, 10
37434
; ~:
The U-shaped frame 102 has an open front portion and a transverse ~-
member at its rear portion. The frame 102 includes sides 108 and
110 with caster wheels 112 mounted on their opposite ends. The side `
members 108 and 110 are essentially parallel and they are rigidly secured -
to the transverse frame member 114 at the rear portion of the frame
~ . .
structure. The side members 108 and 110 have caster wheel mounts
.; ',~,, ~ .
on their ends. The caster wheel mounts include members 116 secured
to the end portion of the side members 108 and 110 which provide a ~ ;
`- mounting surface for the fixed base of the casters. Each of the casters
have a base which is secured to the mount members 116 and they are ;;;~
, fully rotatable in the horizontal direction to provide for movement and
, manipulation of the tLre cart 100. "`
.. .~ . .
~, The llEt frame 10~ also include9 uprights or stanch~on members
. ...
~; 118 and 120 whlch are rlgldly secured to the cross member 11~ and ~ i
.. ,~ . ~
extend upward therefrom. Braces 122 and 124 extend from the mounts
116 to the stanchlon members 118 and 120, respectively. The llft
frame 104 has a cross member 126 with sleeves 128 and 130 on lts
i i ~ opposlte ends. The sleeves 128 and 130 are slidably mouated on the
stan~hion members 118 and 120, respec~ively. The sleeves 128 and
130 are preferably elongated as illustrated in the drawings. (:ross
meinber 126 is rigldly secured to the sleeves 128 and 130 at their upper i;
~i end pcr:ion with braces ~132 and 134 extending between the lower portion j~.i
. '~.! : ~ .. . .
j ~ oP the sleeves 128 and 130, respectlvely and joined at a mid portion
i 1 .~. ;. .
of the cross me mber 126. ~ `
Raising and lowering of the lift frame 104 is accomplished by ~''!',", '''
`~ a jack 135 positioned underneath a mid portion of cr~ss member 126.
The jack 135 rests on the frame cross member 114 and its lifting ; ~`
.`' member is positioned underneath the mid portion of cross member 126
, so that when the lifting member is extended it will raise the cross
,. , .. ,~ .
. .:
-11 - 'i
.:, ;.
~03~434 ~:
- -~ member 126 with the sleeves 128 and 130 sliding on the stanchion members
118 and 120, respectively. The jack 135 is pre~erably a hydraulic type
: . ,
jack of a sufficient capacity to adequately and safely raise and lower large ~ ~
,. ~ .
heavy multiply wheel assemblies.
; Upright wheel support members 136 and 138 are rigidly secured
.... . .
to the cross member 126 and the sleeves 128 and 130, respectively.
The upright wheel support members 136 and 138 extend upward a sub- ~
stantial distance above the cross member 126 to in use provide a rest ~,
.,i
or support for a wheel assembly carried on the cart. The upper end
of each of the wheel support members 136 and 138 is provided with a
notch. Yig. 7 shows the notch 140 in the wheel support member 138. `
When a wheel assembly is carried on the cart as illustrated in Fig. 7
.. 1 ~.
a chain 142 is looped around the wheel assembly, the l~nlds o~ the chaln
are engaged in the notches in the wheel support members 136 and 138
to secure the wheel assembly.
The lift frame 104 has a pair of arms, indicated generally at
! 144. In use the arms 144 are supported by the lift frame 104 and
, I' the CrC`S6 ~r~mber 114 and they are positioned underneath a wheel
or wheel assembly to lift or support it. Each arm of the pair of arms
~ 20 144 is constructed similarly. The individual arms are indicated at
`I ~ 146 and 148. Each arm is generally L-shaped with the elongated portion
thereof extending forwardly toward the open front OI the tire cart and
with the shorter portion extending upward and attached to the cross
member 126. The arms 144 are slidably mounted on the cross member
';,1 ,.
¦ 126 so their relative spacing can be adjusted as desiredO ~he mounted
~'~ position of the arms 144 can be seen in the combination of Figs. 8, 9, ~-
and 10. The shorter portions 150 and 152 OI the arms 148 and 146,
. I .
respectively, are on the ~orwardly disposed side OI cross member 126
~ I
and the frame cross memb~r 11~4. Each oE the arms 146 and 148 has
a top, indicated at 154 and 156, respectively, which rests on top OI
1 ; :
12-
; .', '
.`
1037~3~ :
- ~ cross member 126, and rear portions 158 and 160, respectively, which ` ~
.. ... . .
are positioned on the rearwardly disposed side of cross member 126.
The shorter portions 150 and 152, the tops 154 and 156, and the rear `
.,: ~.. :
portions 158 and 160 of the arms 144 form a hook like structure which
~` hooks over the lift frame cross member 126. It is to be noted that as
the lif~ frame 104 is raised and lowered the lower end por~ions of the
arms shorter portions 150 and 152 rest on the forwardly disposed
side of the frame c~oss member 114 so the elongated portions of the
~, arms 1~4 are maintained in a generally horizontal position. -
The arms 144 are preferably conistnucted with at least the ~;
.. . . ..
longest portion of the individual arm members 146 and 148 being
rectangular in their external form. The arms 144 are constructed
. ,j ,; .
90 they can have arm extension members mounted with lndlvlclual
;, elongated portions of the arms to e~stend the reach so that large multlple
~ wheel assernblies can be accommodated by the tire cart 100. A pair
.,,j .. :, .
. .ii . .
~; of arm extension members are removably mountable with the arms 14~
~, as an opt~on for extending the reach. Fig. 10 shows the arm extension ~ ;;
`, members, indicated generally at 160, in dashed lines mounted with ~
the arms 144. The arm~extension members 160 are preferably rectangular -
20 shaped channel like members which are slipped over or placed onthe
rectangular exterior of the lndividual arm members 146 and 148. `
The extension mernbers are preferably essentially U-shaped channel ~ I
members with an essentially rectangular interior which is open on one
'i side so the extension members 160 can overlay the rectangular exterior '
,.-; ,. . .
; form of the arm members 160. In practice, it has been found that it ;`
,. . .
:-, is not necessary to secure the extension members 160 to the arms
~ . ~
144 when a tire, wheel or wheel assetnbly is supported on the tire
i~ cart because the welght of them will hold the extensions 160 firmly in place. .
`'.1 : ~
. j " ,. . .
. ~, ...
.(., ,`.:
~,; ~ .,
. ~ ~ . ..
, .
. , .
~37434 ;~
~ It is to be noted that if desired the elongated portions of the arms can ,`
;` ~e a shape other than rectangular and the extension members can have 1::
~, . .
- a shape other than a U-shape, for e~ample, both of the arms and the ;~
..
. ~ extensions can be cross-sectionally cylindrical. ;~
The ~ire cart 100 of this ernbodiment, (2), of this invention -
is designed to be used in removing wheels from a vheicle such as a
,." ;, ,.
i tractor and for storing the wheels once they have been removed, and
in remounting the wheels on the vehicle. In uslng the tire cart 100
. ,, i
to assist in removing the wheels from a vehicle the lift frame 104 -
is placed in the lowered position with the arms 144 being underneath ~ -
.. ...
a tire, wheel, or wheel assembly, as the case may be. Once the
arms 144 are positioned underneath the wheel assembly, then the wheel
i assembly is loosened to permit its removal Erom the vehlcle and the
:'i
arms 144 are raised by the ~ack 135 to support the wheel assembly.
Before a wheel assembly is actuallyremoved from a vehicle to a displaced
position it is preferred for safety reasons that the chain 142 be looped
. ... .
l around It and secured to the wheel support member 136 and 138. Once `~
'~ a wheel assembly is secured to the tire cart it can be moved away from
the vehicle and~easlly~moved around by virtue of the casters 112. In !~
20 ~ using the tire cart l00 to replace a wheel assembly on a vehicle the lift
frame l04 is adjusted in its vertical position by the jack 135 so that `~
it can be correctly~aligned with the axle~ or lugs on the vehicle to facilitate
h -I installation. Once a wheel~asse~ly has been reattached to a vehicle `~
:~
the chain 142 is removed and the lift frame 104 lowered so that it can
be removed Prom the wheel assembly. The liftlng feature o~ the tire
cart of this invention is very important because the use of a hydraulic
jack 135 to control the vertical position of the lift frame 104 allows ; ;
j l a wheel assembly supported to be precisely and accurately vertically
;,~ adjusted. This feature is extremely helpful to the mechanic who must
;` ! ~ 30 precisely control the ~osition of a large and often extremely heavy i~
~, i " `
~`.``!`
-14-
.,., ~' ~'.
: ` l
37~34
; i -~vheel assembly when assembling or disassembling a tractor or other ~
.: ~ -: .... . .
large vehicle. -;~ -
In the manufacture of both embodiments, (1 and 2), of the tire ;
.. -. ~. : .
cart of this invention it is obvious that it can be easily constructed `
' to achieve the end product. In practice the tire carts have been con-
structed from standard sizes of materials and with standard components
:
by using common machine shop and fabricating practices. It is to be
noted that the tire carts of this invention are rugged and substantially
less complicated than prior art tire carts and similar wheel handling `
10 devices.
, i .
In the use and operation of the tire cart structures Oe this invention
it is seen that same provldes a dolly for the handling, storage, and
manip~ation of tires or wheel assemblies for vehicles. In practlce
the tire carta of this Inventlon have been used In mechanlc shops which
~1 exclusively work on both frameless and frametype agricultural tractors.
;~ Both embodiments have in practice been quite successful because of
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,¦ their easily and accurately controllable elevating feature. The tlre 'b;
cart having the tiltable portion has proved to be quite successful becuase
~; of its accurately controllable tilting features.
, 1 ~ 20 As wlll become~apparent from the foregoing description of
.i ~ the Applicant's tire cart structu~es, relatively inexpensive and simple
means have~ been provlded ~to support, transport and temporarily store
large tires or wheel assemblies. The tire cart structures are simple
and economical to manufacture due to its relatively simple construction. ' -
The tiltable embodiment i9 extremely useful and helpful because Oe the 1;
, ~ easily controllable tilting and elevating features of its lift frame. ~
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