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Патент USA US2412755

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Dec. 17, 1946.
v`v. w. sLoÀNE
SHUTTLE CAR
Filed 001'.. 28. 1943
m
2,412,755
3 Sheets-Sheet l
Dec. 17,` 1946.
W. W. SLOANE
SHUTTLE CAR
.Filed oct. 28, 194s
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____
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2,412,755
3 Sheets-Sheet 2
Dec. 1,7, 1946.
I
. w. w. sLoANE
SHUTTLE CAR
_Filed oct. 28.' 1945
2,412,755
Patented Dec. 17, 1946
2,412,755
UNITED STATES PATENT OFFICE
2,412,755
SHUTTLE CAR
William W. Sloane, Chicago, Ill., assignor to
Goodman Manufacturing _ Company, Chicago,
Ill., a corporation of Illinois
Application October 28, 1943, Serial No. 507,928
1
5 Claims.
(Cl. 280-87)
2
This invention relates to improvements in shut
tle cars adapted to transport coal or other ma
terials from working places of mines underground.
Shuttle cars operating in mines underground
usually consist of a material carrying body sup
ported on rear driving wheels and front steering
Wheels. The bottom of the material carrying
compartment of the body is deñned by a con»
veyor extending along the car quite close to the
ground, and spaced a considerable distance be
low the axles of the steering and drive wheels.
The steering wheels are mounted on Lemoine
pivots in the usual manner, so the inner wheel
turns sharper than the outer wheel. Since the
wheels turn about axes spaced inwardly of the
wheels, the major portions of the wheels turn
into instead of away from the body durirg steer
ing and thus restrict the Width of the material
carrying body of the car, recessed between the
wheels. On account of space limitations under
ground, the capacity of a car is limited when
using the conventional type of steering, and in
mines of low head room has probably reached its
maximum capacity.
The objects of my present invention are to pro
vide a novel form of support and steering arrangement for the steering ‘wheels of a shuttle
car arranged to increase the capacity of» the car
n
Figure 3 is an enlarged fragmentary view in
side elevation, with certain parts shown in lon
gitudinal section, in order to illustrate certain de
tails of the steering connections for the front
steering wheels;
Figure 4 is a transverse sectional view taken
substantially along line 4_4 of Figure 2 ;
Figure 5 is a fragmentary transverse sectional
view drawn to the same scale as Figure 4, and
10 showing certain details of the mounting for one
of the front steering wheels on the body of the
car;
Y
Figure 6 is a fragmentary transverse sectional
view illustrating certain details of the steering
15 connections for one of the front steering wheels;
and
Figure 7 is a View diagrammatically illustrat
ing the booster cylinder for steering, and the fluid
connections thereto.
20
,
Referring now to the details of the embodi
ment of my invention illustrated in the draw
ings, a coal haulage vehicle or shuttle car is in
dicated generally by reference character I0.. Said
shuttle car consists of an elongated material
25 carrying body II having a pair of vertically dis
posed laterally spaced side walls I2, I2 extend
ing for its full length and forming the side walls
of the material carrying compartment of the car.
over` former shuttle cars, by making it possible
The bottom of the material carrying compart
to provide less clearance between the sides of the 30 ment of the car is defined by a conveyer indi
body of the car and the steering wheels thereof,
cated generally by >reference character I5. u
so the width of the material carrying body of the
The material carrying _body II is supported
car may be increased without increasing the over
on two rubber-tired drive wheels I6, I6 near `the
all dimensions of the car.
rear of the car and two rubber-tired steering
A more specific object of my invention is to 35 wheels I1, Il near the front end of the car., p `
provide a new and improved steering arrangement
Steering is effected Iby a steering wheel I8 in
for a Vshuttle car including a mounting for the
an operator’s compartment I 9 near the front end
steering wheels, so arranged that the wheels will
bodily turn about axes spaced outwardly from their
outer sides, so that a greater part of the turn
ing movement of the steering wheels will be in
directions away from the sides of the car.
Other objects of my invention will appear from
of the car, to one side of the conveyer, in a man
ner which will hereinafter more clearly appear as
40 this specification proceeds, The general lcon
struction and arrangement of said body is similar
to that shown in application Serial No. 456,165,
iiled by William R.. Beck on August 26, 1942, now
Patent No. 2,336,386, so need not herein be shown
ceeds and with reference to the accompanying 45 or described in detail.
drawings wherein:
The conveyer I5 extends for substantially the
Figure 1 is a diagrammatic plan view of a shut
full length of the vehicle so coal can be unloaded
tleA car constructed in accordance with my inven
mechanically from one end thereof, and is herein
tion;
shown as being an endless ilight conveyer in
Figure 2 is a fragmentary plan View of the front 50 cluding a pair of parallel spaced endless chains
part of the car, with certain parts broken away
2li, 20 having a plurality of parallel spaced flights
and certain other parts shown in horizontal sec
2|, 2l mounted therebetween. Said endless
tion, in order to illustrate certain details of the
chains and iiights extend from idlers 22, 22 near
support for the :front steering wheels, and the
the receiving end of the car along a bottom plate
steering connections therefor;
time to time as the following specification pro
55
23, connected between the side walls l2, ,I2y and
2,412,755
4
Y
in turn is meshed with a spur gear 85 on a ver
forming a bottom for the conveyor, to and around
drive sprockets 24, 2t on a transverse shaft 25
at the discharge end of the car. From thence
said chains and flights extend beneath the plate
23 along a bottom plate 26, forming a bottom for
the body of the car, to and around the idlers
tical shaft 86, journaled adjacent its upper and
lower ends in a bracket S1, projecting forwardly
22, 22.
from the forward end of the bracket member 13
(see Figures 3, 4 and 6). A spur pinion §38 is
secured to said shaft, beneath the spur gear S5,
and meshes with and is driven from a rectilinear
rack 89, slidably guided in an outwardly facing
shown as being mounted on the outer side of the
formed integrally with the bracket member 13.
side wall I2 opposite from the operator’s com
partment I9. Said drive motor is suitably con
wheel I8 through a power steering booster indi
nected to said drive shaft through a worm and
worm gear reduction (not shown), in a casing
generally indicated by reference character 3l and '
a chain and sprocket drive 32, driven from the
worm gear of said worm and worm gear reduc->
power steering booster may be of a form well
known to those skilled in the art and is no part
of my_present invention, so will only herein be
described in so far as is necessary to make my
The drive sprockets 24 and conveyer I5 are
suitably driven by an electric motor 28, herein
channelled guide 93, herein shown as being
The racks 39, öë are operated by the steering
cated generally by reference character S3. Said
present invention readily understandable. The
tion.
steering wheel l1 has connection with an oper
Referring now to the novel mounting for each
front steering wheel, for supporting said steering 20 ating arm 561 of the steering mechanism through
a worm and worm gear (not shown) enclosed in
wheels for steering movement about imaginary
a housing 95. Said operating arm is mounted on
lpivotal axes spaced laterally from their outer
a transverse shaft 96, journaled in the housing
sides, so a greater part of the turning movement
95, and depends from said shaft and has a bifur
of said wheels will be away from the body of the
cated lower end 91, having operative connection
bar, when turning the car in either direction,
with said power steering booster 33, >for operat
each steering wheel I1 is slidably guided on a
ing said booster (see Figures 4 and '7) . As here
bracket member 13 for movement therealong.
in shown, said bifurcated lower end of said arm
Said bracket members are secured to the outer
sides of the side walls I2, I2 near the front end
has slidable connection with a pair ofv spaced
of the vehicle, and project laterally therefrom 30 studs S8, 93 projecting from opposite sides of a
ball-shaped operating member 953. Said oper
(see Figures 2 and 5). The mountings for each
ating member is slidably mounted in a sleeve
steering Wheel and the steering connections there
Iiiü and operates a valve lill, which controls the
forl are the same, so the mounting and steering
passage of fluid under pressure to the head and
piston rod ends of a cylinder |03. Said valve and
sleeve are herein shown as being slidably mounted
in an integrally formed rearward extension itil
connection for onewheel only will herein be de- ~
scribed. As herein shown, the bracket member
13 has a pair of vertically spaced oppositely fac
ing horizontally extending arcuate guide portions
of said cylinder. A piston Iäii, in said cylinder,
has a piston rod §06 projecting therefrom. Said
14, 14, which are of a convex formation when
looking towards the side of the car'. Said guide
piston rod is secured at its outer end to a member
Iß1, secured to a forward end wall of the oper
portions are adapted to be engaged by vertically
spaced facing channelled guides 15„15, formed
ator’s compartment, so that the entire cylinder
will move along said piston rod upon the admis
sion of fluid under pressure to the head or piston
rod ends of said cylinder. A 'boot Itß, which may
be made from leather or any other'suitable mate
integrally with a support bracket 16 for an axle
11 for the front steering wheel I1 (see Figure 5).
Said front steering wheel may be of a construc
tion somewhat similar to the rear drive wheel,
ïand as herein shown, is provided with an'internal
brake drum 19 adapted to be engaged by the
rial, encloses said piston rod end of the cylinder,
to- permit said piston rod to be lubricatedand to
usual brake shoe (not shown). '
prevent dust or dirt from accumulating on said
The guide portions 14,'14 of the bracket mem
piston
ber 13 and the channelled guides 15, 15 of the i
support bracket 16 areV so formed as to» slidably
Vsupport the steering wheel l1 for movement about
of the wheel, so that Said wheel will move away '
from the body of the vehicle during the steer- a
ing operation, instead of inwardly towards the
body, as is usual in conventional forms of steer
,
'
-> ^'
Said pump
may be of any well known type and is herein
shown as being driven from the rear end of the
motor 29. A pipe II3 connects said pump with
a fluid storage tank III; A pipe Il4 leads from
said pump to said valve lill in said cylinder. A
return pipe H5 leads from said valve IBI to said
iiuid Istorage tank. Said valve is operated by the
GI) operating arm 94 and operating member 99, as
shown as being plain bearings although it is
obvious that other bearing means such as a plu
rality of spaced rollers may be substituted for
said bearings, to reduce frictional resistance dur
ing steering, if desired.
‘
valve IllI by means of a pump liti.
a pivotal axis spaced outwardly from the outside
ing. Channelled bearings 853, 8i] are interposed
between the guide portions 1&5, 1Q and the chan
nelled guides 15, 15. Said bearings are herein
rod.
Fluid'is supplied to the cylinder Iil3 through the
'
The support bracket 16 is moved along the
arcuate guide portion 14 of the bracket member
has been mentioned before, and is arranged to
supply fluid under pressure to either the head
or piston rod ends of said cylinder, in a manner
well known to those skilled in the art, upon the
“ turning of the steering wheel in one direction
or another.
An arm IIS is secured to and extends rear'
13 for turningthe wheels during steering, by
wardly from the rearward extension IM» ofthe
means of an arcuate rack BI secured to the in- '
the rack 89 pivotally connected thereto, for slid
ably moving said rack in the guide 9û. The arm'
IIS is provided with an inwardly extending por
tion. I2ii, having 'a link IZI pivotally connected
thereto. The opposite endof said.v link is’pivotally
side of the support bracket l5, as by cap screws
'82, 82 (see Figure 2). Each arcuate rack 8l is
meshed with a rectilinear rack t3, slidably guided
in an outwardly facing channelled guide ät,
formed in a bracket member 13, intermediate the
upper and lower ends thereof. Said arcuate rack
cylinder |03. Said arm has the forward vend'of
connected to an arm I 23 of a bell crank |24. Said
fis
:2,412,755
`bell crank, as herein shown, is pivotally mounted
racks guided for rectilinear movement lalong said
von a vertical pin |22, which is mounted on the
side walls, means for rectilinearly moving said
underside of the plate 23in a bifurcated bracket
racks, and. arcuate racks meshing with said rec
|25, `secured to the bottom ofsaid plate. The
«tilinearly movable racksand having operative
-other arm‘of said bell crank is pivotally connected f Ul >connection with said axles for turning said axles
to an arm |26 of a bell crank |27 by means of a
link |29. ‘ Said bell crank is mounted in a bracket
`about said imaginary pivots.
HI30, on the underside of the bottom plate 23,
nation with a material carrying body having lat
erally spaced side Walls with an endless conveyer
mounted between said side walls and forming the
bottom ofthe material carrying compartment of
`said body, a pair of `steering wheels at opposite
sides of said vehicle, axles for said wheels dis~
posed a substantial distance above the lower end
of said body, and mountings for said aXles 0n said
side walls for supporting said Awheels for'bodily
movement about imaginary upright pivots spaced
outwardly from said side walls and the outer
in a `manner similar to the bell crank |24. Said
last mentioned bell crank has an outwardly ex
tending arm |31 which is connected with the
righthand rack 89 by means of a link |32.
The arrangement of said vlîl’lks and racks and
pinion‘s is such that when the steering whee1 i8
is turned in a direction to turn the vehicle-to the
right, fluid under pressure will be admitted to
the piston rod end of the cylinder i |13 through the
valve IDI , to move said cylinder and the left-hand
rack 89 towards the rear of the vehicle and move
2. In a wheel mounted vehicle and in combi
ends of said axles, so a major portion of said
the right»hand rack 89 towards the forward end 20 wheels will turn away from said side walls dur
of the vehicle through the bell cranks |24 and
ing steering, said mountings each including a
|21, to turn the two wheels in a comin-on direc
supporting member mounted on the outer side
tion, but at different angles, so both wheels will
of one of said side walls, each of said supporting
positively turn the vehicle in the desired direc
members having a pair oi’ vertically spaced arcu
tion without skidding.
ate guiding portions, a bracket extending inward
When it is desired to turn the vehicle in the
ly from each oi said axles and having a pair of
opposite direction, iiuid under pressure is ad
vertically spaced portions adapted to register for
mitted to the head end of the cylinder |03 by
slidable engagement with upper and lower guide
turning the steering wheel to the left. This po
portions of one of said nrst mentioned guides,
sitions the valve IUI to admit iiuid under pressure
and means having operative connection with said
to the piston rod end of the cylinder |93, and
axle brackets for moving said brackets along said
move said cylinder and the left-hand rack 88
towards the forward end of the vehicle, and move
the right-hand rack 89 in an opposite direction, to
turn the left-hand wheel at a sharper angle than 5
the right-hand wheel, to compensate for the dif
ference in radius of curvature of the path of
travel of the two wheels.
It may be seen from the foregoing that the
guided for rectilinear movement along the outer
sides of said side walls, arcuate racks meshing
with said racks and having operative connection
with said axle brackets, and means for slidably
moving said reotilinearly movable racks along
said body for turning said axles and wheels.
guide portions 1d, 'i4 and guides 15, 'I5 are so ar- "
nation with a material carrying body having out
ranged that the direction of turning of the steer
ing wheels is outwardly from the body of the
vehicles about arcs, the centers of which are
spaced outwardly from the outsides of the wheels,
and that this permits the side walls of the vehicle,
recessed between the wheels, to be widened a dis
tance equal to the space required for conventional
'steering Iwhere the pivots of the steering wheels
are spaced inwardly of the insides of the wheels,
without increasing the overall width of the ve- "
hicle.
While I have herein shown and described one
form in which my invention may be embodied,
it will be understood that the construction thereof
and the arrangement of the various parts may '
be altered without departing from the spirit and
scope thereof. Furthermore, I do not wish to be
guides, for steering the vehicle, including racks
3. In a wheel mounted vehicle and in combi
er side walls and a pair of front steering wheels,
axles for said wheels, means for mounting said
wheels and axles on said side walls for bodily
movement about imaginary upright pivots spaced
outwardly from said side walls and from the out
er ends of said axles, so a major portion of said
wheels will turn away from said body during
steering, including arcuate supporting guides on
opposite sides of said body and slidable support
ing and guiding connections between said axles
and said guides, spaced inwardly of said wheels,
and interengaging means rectilinearly movable in
opposite directions along opposite sides of said
body and having operative connection with said
axles for simultaneously moving said axles in
opposite directions along said guides to turn said
axles about said imaginary pivots, to steer the
vehicle.
construed as limiting my invention to the spe»
4. In a wheel mounted vehicle and in combi
ciñc embodiment illustrated, excepting as it may
(it) nation with a material carrying body having »out
be limited in the appended claims.
er side walls and a pair of front steering wheels,
I claim as my invention:
axles for said wheels, means for mounting said
l. In a wheel mounted vehicle and in combi
wheels and axles on said side walls for bodily
nation with a material carrying body having out
movement about imaginary upright pivots spaced
er side walls and a pair of front steering wheels,
outwardly from said side walls and from the outer
axles for said wheels, means for mounting said
ends of said axles, so a major portion of said
wheels and axles on said side walls for bodily
movement about imaginary upright pivots spaced
outwardly from said side walls and the outer ends
of said axles, so a major portion of said wheels
will turn away from said body during steering, ‘
including arcuate supporting guides on opposite
sides of said body and slidable supporting and
guidingr connections between said axles and said
guides, spaced inwardly of said wheels, and means
for turning said wheels during steering including
wheels will turn away from said body during
steering, including arcuate supporting guides on
„te sides of said body and slidable support
ing and guiding connections between said axles
and said guides, spaced inwardly of said wheels,
and means for turning said wheels during steer
ing including a member rectilinearly movable
along each side oÍ the body of the vehicle, an
operative connection between each of said mem
»2,412,755
7
'bers and its respective axle for turning said axles
about their imaginary pivots upon rectilinear
Amovement of said members, a steering wheel for
>rectilinearly moving one of said members, and
an operative connection between said rectilinear
1y movable members for rectilinearly moving
Vthe other member upon rectilinear movement
kof said one member in a direction opposite
to Y the
direction
of
movement
of
said
one
member, and moving said axles along said guides
in opposite directions, for steering the vehicle.
8
vincluding arcuate supporting guides on opposite
sides of said body and slidable supporting and
guiding connections between said axles and said
guides, spaced inwardly of said wheels, and means
for turning said wheels during steering includ
ing a steering wheel, a rack, an operative con
nection between said steering wheel and said rack
for rectilinearly moving said rack upon turning
movement of said steering wheel, an interengag
ing»,r connection between said rack and one of said
axles for turning said axle upon movement of
5, In aV wheel mounted'vehicle and in combi
nation with a material carrying body having out
said rack, another rackron the opposite side of '
movement about imaginary upright pivots spaced
move said secondmentioned rack in an opposite
direction from said first mentioned rack upon
turning of said steering wheel.
said body, an interengaging connection between
said rack and said other axle for turning said
er-side walls and a pair of front steering wheels,
axles for said wheels, means for mounting said 15 axle upon rectilinear movement of said rack, and
a _connection between said racks operative lto
wheels and axles on said side walls, for bodily
.outwardly from said side walls and the outer ends
of said axles, so a major portion of said wheels
will turn away from said body during steering, 20
'
WILLIAM W. SLOANE.
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