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Патент USA US2409808

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Oct; 22, 1946.
L. E; SIMMONS
2,409,807
MINING APPARATUS
Original Filed Oct. 15, 1941
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MINING APPARATUS
Original Filed Oct. 15, 1941
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MINING APPARATUS
Original Filed Oct. 13, 1941
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Patented Oct. 22, “1946
2,400,807
UNITED, STATES PATENT OFFICE
2,409,807
MINING AI’PARATUS
~Leon E. Simmons, Claremont, N. H., assignor to
Joy Manufacturing Company, a corporation of
Pennsylvania
Continuation of application Serial No. 414,722,
October 13, 1941. This application December
23, 1943, Serial No. 515,440
9 Claims.
(Cl. 262—28)
1
2
This invention relates to mining apparatus, and
Fig. 2 is a side elevationalview of thecoal mine
more particularly, but not exclusively, to im
provements in a transport truck especially de
signed for use in transporting a coal mining ma
chine from place to place about a coal mine.
This application is a continuation of my co
ing apparatus shown in Fig. 1.
Cr
of Fig. 1, and showing the liquid pump.
_
‘
Fig. 4 is an enlarged cross sectional view taken
substantially on line 4—4 of Fig. 1.
Fig. 5 is a View in longitudinal vertical section
pending application Serial No. 414,722, ?led Oc
tober 13, 1941.
,
Fig. 3 is an enlarged view in longitudinal ver
tical section taken substantially on line 3-3
‘
An object of the present invention is to provide
taken substantially on line 5—5 of Fig. '1, showing
an improved coal mining apparatus. Another ob 10 the truck in lowered position.
‘
ject is to provide an improved coal mining appa
Fig. 6 is a view similar to Fig. 5, showing the
ratus having novel elevating means. Yet another
truck in elevated position,
object is to provide an improved transport truck
Fig. 7 is a horizontal sectional view, with parts
for a coal mining machine. A further object is
shown in plan, taken substantially on line 1—-1
to provide an improved transport truck having
of Fig. 5.
novel means for elevating the machine-receiving
Fig. 8 is an enlarged detail View in side eleva
guideway thereof. Yet another object is to pro
tion illustrating a portion of the apparatus shown
in Fig. 2.
vide an improved transport truck for a coal min
ing machine wherein the truck elevating means
Fig. 9 is a detail sectional View taken On line
may be operated through elements of the mining 20 9—9 of Fig. 8.
Fig. 10 is a diagrammatic View of the hydraulic
machine. A still further object is to provide an
system.
improved truck elevating mechanism which may
be operated through an element of the feeding
In this illustrative construction there is shown
an improved transport truck, generally desig
means of a coal mining machine supported on
A still further object is to provide a
; nated l, adapted to receive and transport a‘ coal
novel transport truck having improved elevating
mining machine, generally designated 2 (shown
mechanism whereby a coal mining machine may
be supported in a relatively low position during
transport about the mine and which is adapted to
effect elevation of the truck to enable unloading 30
in construction lines in Figs. 1 and 2). ‘The trans
the truck.
- of the mining machine at either side of ‘the truck.
Another object is to provide an improved mining
machine transport truck of the tilting-swivel type
port‘ truck is of the well known tilting-swivel type
and is provided with novel hydraulically operated
mechanism, generally designated 3, for elevating
the tiltable and swivelled machine-receiving
frame relative to the truck body, for a purpose to
be later explained. The coal mining machine 2
may be of the same general type as that disclosed
wherein the machine-guiding-frame may be
swung into positions at either side of the truck 35 in Patent No. 2,131,178, granted September. 27,
1938, in which I am one of the inventors, although
and may be tilted into engagement with the mine
it will be obvious that the invention may be uti
floor, to facilitate loading and unloading of the
mining machine. Yet another object is to provide
lized with mining apparatus of various other
types, if desired.
1
‘
an improved elevating mechanism for the svwlv
The mining machine disclosed herein is of a
elled machine-receiving frame of a mining ma 40
conventional flexibly fed, room and pillar, ?oor
chine transport truck. Still another object is to
cutter type slidable on its own bottom over the
provide an improved hydraulically operated ele
floor of a mine during operation thereof and hav
vating mechanism for a transport truck and hav
ing a frame 4 from which a horizontal plane kerf
ing novel means for operating the elevating
45 cutter 5 projects forwardly lengthwise of the ma
mechanism. How these and other objects are ac
chine. The machine has feeding and controlling
complished and the advantageous features of the
drums 6 and ‘l on which feeding and controlling
invention, will be best understood from the
‘ cables 8 and 9 are respectively Wound. The ma
following detailed description wherein a preferred
chine frame carries a, motor, as clearly described
and illustrative embodiment is set forth, reference
in the patent‘ above referred to, which effects drive
for the purpose being had to the accompanying
of the kerf cutter and the cable winding drums.
drawings, in which:
.
The manner in which a machine of this type is
Fig. 1 is a plan view of a coal mining apparatus
operated is well known to those skilled in the art,
constructed in accordance with an illustrative
and, therefore, more detailed illustration and de
embodiment of the invention.
55 scription are herein unnecessary. ‘The transport
2,409,807
3
4
truck I receives the coal mining machine 2 for
comprising an elongated cylinder 452 containing a
transport, and, in this improved construction, the
long-stroke piston Q3.‘ The head M of the cylin
machine motor not only effects drive of the truck
wheels to- propel the mining apparatus, in the
manner described in the patent, but also serves
as a source of power for the hydraulic pump of
der 42 is in the form of an eye having an opening
45 for receiving one of the hooks 22 of" the truck,
the hydraulically operated elevating mechanism
3 of the truck, as hereinafter explained.
The improved transport truck I has a truck
frame or body it mounted on traction wheels H
and the piston rod 46 of the piston projects out
wardly through a cylinder head 45? and carries an
eye-member 48 to which the hook or clevis of the
feeding cable 8 is connectible. A flexible conduit
Ell connects the pressure end of the cylinder 42 to
on the floor of the mine. A horizontal turntable
the pressure ends of the hydraulic jack cylinders
33, and a hand valve 5| having an operating
handle 52, is provided to control the flow of liquid
~ or swivelled plate I3 is mounted on a sub frame
throughthis conduit. This valve may be closed to
£3’ to turn about a vertical pivot 14, and mounted
on this swivelled frame is a ‘machine-receiving
trap the liquid within the jack cylinders 33 to hold
the machine-receiving-and-guiding frame in ele
vated position. When the pump cylinder is at
tached to the hook 22 at the forward end of the
machine-receiving-and-guiding frame, in the
adapted to travel along a mine trackway l2 laid
and-guiding frame I5. The machine-receiving
and-guiding frame is preferably composed of suit
able angle irons connected by transverse plates,
and provides parallel guideways along which the
coal mining machine is slidable during loading of
the machine onto the truck and unloading of the
machine from the truck. The machine-receiv
ing-and-guiding frame has a rearward portion l6
and a front portion l ‘l which may serve as a ramp
along which the machine moves during the load
ing and. unloading operations.
This machine“
receiving-and-guiding frame 15 is pivoted on a
manner shown in Figs. 1 and 2, and the hook or
clevis of the feed cable 8' is connected to the eye
member 68 on the pump piston rod and the feed
drum 6 is rotated to wind in the. feeding cable,
the pump piston 43 is moved rearwardly in its
cylinder to force liquid from the pump cylinder
to the jack cylinders, thereby to effect swinging
of the parallel lever arms 27, 21 to elevate the
the machine-receiving-and-guioling frame. When
the machine-receiving-and-guiding frame is in
elevated position, it may be swung about its swivel
movement of the machine onto and from the 30 H3 horizontally over the tops of the truck wheels,
truck. The rearward portion I5 of the machine
so that the mining machine may be loaded and
receiving-and-guiding frame has a transverse
unloaded at either side of the truck. During
rear plate 20 notched at 2| to receive a conven
transport of the machine about the mine, the
tional hook or clevis on the free end of each of
pump 4! may be laid on suitable carrier racks 53,
horizontal axis at i8 on the turntable, and has a
front ?oor-engaging plate IQ for facilitating
the cables 8 and 9, and suitable hooks 22 are pro
vided at the opposite sides of the forward end
i 53 arranged at one side of the truck frame, and
these carrier racks may also serve as guides for
of the swivelled machine-receiving-and-guiding
the ?exible conduit 50, in the manner shown. If
desired, similar carrier racks may be placed at
the other side of the truck, so that the pump may
be located at either side of the truck and operated
by either of. the cables 8 and 9.
When the coal mining machine is being trans
frame, and the cable hooks or clevises ‘are en
gageable in these ‘notches 2i and connectible to
these hooks 22 during certain of the machine
loading or unloading operations, in a, well known
manner.
Now referring to the improved elevating mech
anism 3 for the machine-receiving-and-guiding
frame I5 of the truck, it will be notedthat jour
naled to'rotate on the supporting axles 25 of the
truck are frames 23 haVing lever arms 21 piv
otally connected at 28 to depending lugs’ 29 inte~
gral with the sub frame [3' of the turntable i3.
These lever arms 21, 2f are arranged to provide
a parallel ‘motion supporting structure for. the
turntable, so. that when the arms are swung in
unison about their pivots the machine-receiving
and-guiding frame may be elevated into different
parallel positions. When the machine-receiving
and-guiding frame E15 is in its lowered position, as
shown in Fig. 5, the bottom thereof is disposed
below the'tops‘of the truck wheels between the
latter, and when the machine-receiving-and
guiding frame is in its elevated position its bot
ported from place to placerabout the'mine, the
turntable I3, its sub frame l3’ and the machine~
receiving-and-guiding frame l5 are in their low
ered position on the truck frame, as shown in
Figs. 2 and 5, with the machine-receiving-and-v
guiding frame located downwardly between the
truck wheels, so that at that time the overall
height of the apparatus is maintained at a mini
mum; this being especially desirable when the‘
machine is traveling through mine passages hav
ing low head room. When'the working face is
reached and it is desired to unload the machine
from the truck one of the ‘feeding and controlling
cables 8 and 9 may be‘ attached to one of the
hooks 22 at the forward end of the machine
receiving-and-guiding frame [5, and when the
cable'is wound in by its drum the machine is
moved bodily forwardly along the guideways
tom is disposed‘ above the truck wheels, so that
of the Imachine-receiving-and-guiding frame.
it‘may be swung horizontally into positions at
When the machine passes the center of gravity of
either side of the truck. The frames 26, 26 have
the tiltable-front-portion ll of the receiving-and
lever arms 3i}. and 3!, respectively, to which are ,
guiding frame, the tiltable-front-portion tilts
pivotally connected the opposite ends of a hy- -‘ ‘ downwardly about its pivot 18 until the front
draulic jack mechanism
This jack mech
plate l9 engages the mine?oor and the machine
anism. comprises a pair of hydraulic cylinders 33,
then moves bodily along the ramp provided by
33‘ containing reciprocable pistons 34 having pis
ton rods 35. projecting rcarwardly through the
lower‘ heads 35 of the cylinders and having eye
members 31 pivotally' connected to the front lever
arms 30 ‘at 33‘. The upper cylinder heads 39' are
pivotally connected at to to the rear lever arms
the tilting-front-portion and moves from the
ramp onto the mine?oor. During loading of the
mining machine onto the transport truck, one of
the feeding and controlling cables 8, 9 may be
connected in one of the notches 2i in the rear
plate 20, so that when the cable is wound in by
3'11, A'hydraulic pump 4! is provided ‘for supply
its drum the machine may be drawn onto the
ing liquid under pressure to the jack cylinders, 75 truck. If it is desired to unload the mining ma
2,409,807
5
6
chine at either side of the truck and there is
sufficient head room, the pump 41 may be at
tached to one of the hooks 22 on the forward
end of the machine-receiving-and—guiding frame
l5, in the manner shown in Figs“. 1 and 2, and the
feeding cable 8 may be attached to the eye-mem
ber 48 on the pump piston rod, the machine hav
ing previously been moved forward sufficiently to
and embodied in various other forms without de
parting from its spirit or the scope of the ap
pended claims.
What I claim as new and desire to secure by
Letters Patent is:
~
1. In a mining apparatus, the combination
comprising a portable base having traction
means, a machine-receiving-and-guiding frame ‘
mounted on said base for vertical adjustment
disconnect the truck drive and so enable eleva
tion; and when the cable is wound in by its drum, 10 with respect thereto, a coal mining machine of
the kind having a projecting kerf cutter and
liquid is forced from the pump cylinder 62
through the conduit 50, past the valve 51, to the
jack cylinders 33, thereby to effect swinging of
flexible feeding means including a‘flexiblerfeed
ing element attachable to an anchor in the mine
the parallel motion arms 21, 2'! to raise the ma
for feeding the machine directly over the mine
chine-receiving-and-guiding frame 115. When 15 floor during the kerf cutting‘ operation, said
the machine-receiving-and-guiding frame I5 is in
mining machine when the ?exible feeding ele
ment is attached to said base being movable from
its elevated position, the valve 5! may be closed to
the mine ?oor along said receiving-and-guiding
trap the liquid within the jack cylinders 33, and
the machine-receiving-and-guiding frame may
frame onto said base, and means for elevating
then be swung horizontally about its pivot I4 rela 20 said vertically adjustable frame relative to said
tive to the truck frame into a position at one side
or the other of the truck. One of the laterally
swung positions of the machine-receiving-and
guiding frame 15 is indicated in dotted lines in
Fig. 1, and when the frame is in this position the
mining machine may be moved bodily along the
frame to either unload or load the same, in a
manner similar to that above described. When
it is desired to lower the machine-receiving-and
guiding frame l5, this may be accomplished sim- '
ply by opening the valve 5! to allow the liquid
to flow from the jack cylinders 33 back to the
base including hydraulic jack means extending
generally longitudinally of said base beneath said
receiving-and-guiding frame and operatively
connected between said base and said vertically
adjustable frame, and a pump attachable to said
base and extending longitudinally along one side
thereof and operatively connectible to said flexi
ble feeding element for actuation by the latter
for supplying liquid under pressure to said jack
means.
2. In a mining apparatus, the combination
comprising a portable base having traction
pump cylinder 42, in an obvious manner. The
pump may then be detached from the truck frame
means, a machine-receiving-and-guiding frame
mounted on said base for vertical adjustment
and placed on the carrier racks 53 during trans
with respect thereto, a coal mining machine of
the kind having a projecting kerf cutter and
?exible feeding means including a ?exible feeding
element attachable to an anchor in the mine for
feeding the machine directly over the mine floor
port‘.
Should it ever be desired to elevate the frame
l5 when the machine is unloaded, the pump cyl-‘
a'lnder can be connected to a jack and the feed
cable used to effect the necessary displacement 40 during the kerf cutting operation, said. mining
machine when the flexible feeding element is at
of 1iquid. The friction of the machine on the
frame i5 is enough greater to enable elevation
tached tosaid base being movable from the mine
floor along said receivingnand-guiding frame onto
without machine slippage, when the machine is
on the truck, but damage cannot occur because if
said base, and means for elevating said vertically
adjustable frame relative to said base including
the feed drum is not stopped at the very instant
levers operatively connected between said base
maximum elevation is reached, the machine will
slide forward upon the truck. If slippage of the
and said adjustable frame, hydraulic jack means
machine were to occur instead of elevation oc
extending generally longitudinally of said base
curring, due to any unusual condition, the tail
beneath said receiving-and-guiding frame and
rope can be used to hold the machine against slip 50 operatively connected to said levers for swinging
the latter, and arpump attachable to said base
and extending longitudinally along one side
thereof and operatively connected to said feed
vided having improved elevating means, together
ing element‘ for actuation by the latter for sup
with improved means for operating the elevating 55 plying liquid under‘pressure to said jack means.
ping.
‘
I
As a result of this invention it will be noted that
a novel mining machine transport truck is pro
means.
It will further be evident thatby the
provision of the improved elevating mechanism
for the machine-receiving-and-guiding frame, it
3. In a truck for the receiving, transporting
and unloading of a mining machine of the type
which is slidable directly on the floor of a mine
during the kerf cutting operation and is fed
is possible to decrease the overall height of the
apparatus during transport, and to elevate the 60 by means of a flexible feeding element attachable
receiving-and-guiding frame to enable the latter
to an anchor in the mine, in combination, a
wheel-supported truck frame adapted to travel
to be swung laterally above the truck wheels into
loading and unloading positions at either side
over the mine floor and having wheels at the
opposite sides thereof whose'tops extend higher
of the truck. Further, by the provision of the
improved hydraulic pump arrangement, together 65 than the portion of said frame which is between
with the particular manner of operating the
pump from the feeding cable of a machine feed
ing means, an extremely simple structure results.
Other uses and advantages of the invention will
be clearly apparent to those skilled in the art.
While there is in this application specifically
described one form which the invention may as
sume in practice, it will be understood that this
form of the same is shown fOr purposes of illus
tration and that the invention may be modi?ed
said wheels, a machine—receivingéand-guiding
frame, a horizontal frame on which said ma
chine-receiving-and-guiding frame is supported
for tilting upon an axis transverse to said
machine-receiving-and-guiding frame, a fourth
frame on which said horizontal frame is swivelly
mounted for turning upon an upright axis, means
for adjusting the height of and for supporting
said fourth frame on said truck frame selectively
‘ in a position in which the structure swivelly
2,409,807.
mounted on said fourth frame, disposed length
a-mining machine in operatively connectable and.
wise of the truck, is in a position so low that the
truck wheels limit the range of horizontal swivel
which is operable by such a ?exible element-for
transmitting power to said elevating devices.
ing of said machine-receiving-and—guiding frame
and in a higher position in which said machine
5. In a truck for the receiving, transporting
and unloading of’ a mining machine of the type
receiving-and-guiding frame may be caused, by
which is slidable directly on the floor of a mine
‘swiveling of said horizontal frame, to overlie one
during the kerf cutting operation and is fed‘by
of
truck wheels and then be inclined, by tilt
ins, on said transverse axis, to unload a machine
means of a ?exible feeding element attachable
to an anchor in the mine, in combination, a
there-from directly onto a mine floor along a 10 wheel-supported truck frame adapted to travel
path extending over the top of said one of said
over the mine floor and having wheels at-the
truck wheels, and means for actuating said
opposite sides thereof whose tops extend higher
height-adjusting and supporting means to move
than the portion of said frame which is between
said fourth frame from said ?rst mentioned posi
said wheels, a machine-receiving-and-guiding
tion to said second mentioned position and to 15 frame, a horizontal frame on which said ma
hold it in the latter including elements pivotally
chine-receiving-and-guiding frame is supported
mounted for swinging movement about axes in
for tilting upon an axis transverse to said ma
chine-receiving-and-guiding frame, a fourth
wheel rotation and operatively connected to said
frame on which said horizontal frame is swivelly
fourth frame and power operated elevating de 20 mounted for turning upon an upright axis, means
for adjusting the height of and for supporting.
vices disposed generally longitudinally of the
said fourth frame on said truck frame selec
truck intermediate the truck wheels and beneath
said machine-receiving-and-guiding frame in
tively in a position in which the structure swivelly
each of the longitudinally disposed, differently
mounted on said fourth frame, disposed length
vertically adjusted positions of the latter and 25 wise of the truck, is in a position so low that the
operatively connected to said pivotally mounted
truck wheels limit the range of horizontal swivel
elements for swinging the latter.
ing of said machine-receiving-and-guiding frame
the same straight lines with the axes of truck
4.. In a truck for the receiving, transporting
and in a higher position in which said machine
and unloading of a mining machine of the type
which is slidable directly on the ?oor of a mine .
receiving-and-guiding frame may be caused, by
swiveling of said horizontal frame, to overlie one
during the kerf cutting operation and is fed by
of said truck wheels and then be inclined, by tilt-.
means of a ?exible feeding element attachable
to an anchor in the mine, in combination, a
ing on said transverse axis, to unload a machine
therefrom directly onto a mine ?oor along a path
extending over the top of said one of said truck
wheels, and means for actuating said height-ad
justing and supporting means to move said fourth
frame from said ?rst mentioned position to said
second mentioned position and to hold it in the
wheel-supported truck frame adapted to travel
over the mine floor and having wheels at the
opposite sides thereof whose tops extend higher
than the portion of said frame which is between
said wheels, a machine-receiving-and-guiding
frame, a horizontal frame on which said machine
receiving-and-guiding frame is supported for tilt
40
ing upon an axis transverse to said machine
receiving-and-guiding frame, a fourth frame on
which said horizontal frame is swivelly mounted
for turning upon an upright axis, means for ad
justing the height of and for supporting said
fourth frame on said truck frame selectively in
a position in which the structure swivelly mounted
on said fourth frame, disposed lengthwise of
the truck, is in a position so low that the truck
wheels limit the range of horizontal swiveling of
said‘ machine-receiving-and-guiding frame and
in a higher position in which said machine
receiving--and-guiding frame may be caused, by
swiveling~ of said horizontal frame, to overlie one
of
truck wheels and then be inclined, by
latter including hydraulic jacks disposed gener
ally longitudinally of the truck frame interme
diate the truck wheels and beneath said ma
chine-receiving-and-guiding frame in each lon
gitudinally disposed position of the latter and a
hydraulic pump attachable to the truck and to
which a ?exible feeding element of the feeding
means for a mining machine disposed on said ma
chine-receiving-and-guiding frame may be oper
atively connected and constitute an operating
means to effect the transmission of ?uid under
pressure to said jacks.
6. In a truck for the receiving, transporting
and unloading of a mining machine of the type
which is slidable directly on the ?oor of a mine.
during the kerf cutting operation and is fedby
tilting on said transverse axis, to unload a ma
means of a ?exible feeding element attachable to
an anchor in the mine, in combination, a wheel
chine therefrom directly onto a mine ?oor along
a path extending over the top of said one of said
truck wheels, and means for actuating said
heighaadjusting and supporting means to move 60
mine floor and having wheels at the opposite sides
thereof whose tops extend higher than the por
tion of said frame which is between said wheels,
said fourth frame from said ?rst mentioned posi
tion to said second mentioned position and to
hold it in the latter including elements pivotally
mounted for swinging movement about axes in
the same straight lines with the axes of truck
wheel rotation and operatively connected to said
fourth frame, power operated elevating devices
supported truck frame adapted to travel over the ‘
a machine-receiving-and—guiding frame, a hori
zontal frame on which said machine-receiving
and-guiding frame is supported for tilting upon
an axis transverse to said machine-receiving
and-guiding frame, a fourth frame on which said
d‘ posed generally longitudinally of the truck
horizontal frame is swivelly mounted for turning
upon an upright axis, means for adjusting the
height of and for supporting said fourth frame
intermediate the truck wheels and beneath said
machine-receiving-and-guiding frame in each of
‘ which the structure swivelly mounted on said
on said truck frame selectively in a position in
the longitudinally disposed, differently vertically
fourth frame, disposed lengthwise of the truck,
adjusted positions of the latter and operatively
connected to said pivotally mounted elements
for swinging the latter and power transmitting
means to which the ?exible feeding element of‘
is in a position so low that the truck wheels limit
the range of horizontal swiveling of said machine
receiving-and-guiding frame and in a higher po
sition in which said machine-receiving-ancl-guid-.
2,409,807
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10
ing frame may be caused, by swiveling of said
feeding element of a mining machine disposed
horizontal frame, to overlie one of said truck
wheels and then be inclined, by tilting on said
transverse axis, to unload a machine therefrom
directly onto a mine ?oor along a path extend
ing over the top of said one of said truck wheels,
and means for actuating said height-adjusting
and supporting means to move said fourth frame
from said ?rst mentioned position to said second
mentioned position and to hold it in the latter
including levers pivotally mounted to turn on
transverse axes in the same lines with the axes
of rotation of the truck wheels and disposed inter
mediate the truck wheels and beneath said receiv
ing-and-guiding frame in all longitudinally dis
posed positions of the latter and each pivotally
on said truck may be operatively connected
whereby operation by said ?exible feeding ele
ment for transmitting power medium to said ex
tensible power devices may be effected.
8. A mining apparatus comprising, in combi
nation, a mining machine of the kind slidable
directly on the ?oor of a mine during the kerf
cutting operation and having a projecting kerf
cutter and ?exible feeding means including a
flexible feeding element attachable to an an
chor in the mine for feeding the machine over
the mine floor, and a transport truck for the
machine comprising a portable base having trac
tion means for propelling the apparatus during
transport of the mining machine about the mine,
said truck having a machine-receiving-and-guid
connected at one end to said fourth frame and ex
tensible power devices extending generally longi
ing frame mounted on said base for adjustment
tudinally of the truck also intermediate the truck
into different elevated positions, and being tilt
wheels and beneath said receiving-and-guiding 20 able on said base irrespective of its elevated posi
frame and operatively connected to the other ends
tion into a position wherein its outer end en
of said levers for swinging the latter.
gages the mine ?oor, said mining machine when
7. In a truck for the receiving, transporting
the ?exible feeding element of said feeding means
and unloading of a mining machine of the type
is attached to the truck being slidable from the
which is slidable directly on the floor of a mine 25 mine ?oor along said tilted guiding frame onto
during the kerf cutting operation and is fed by
said truck base, and elevating means for said
means of a ?exible feeding element attachable to
an anchor in the mine, in combination, a wheel
receiving-and-guiding frame including elevat
ceiving-and-guiding frame may be caused, by
mining, machine, said base having an elongated
ing devices disposed on said base beneath said
sup-ported truck frame adapted to travel over the
frame and operatively connected to said frame,
mine floor and having wheels at the opposite 30 and a power device attached to said base and to
which said ?exible feeding element of said feed
sides thereof whose tops extend higher than the.
ing means of the mining machine is operatively
portion of said frame which is between said
conne‘ctable and which is operatable by said ?ex
wheels, a machine-receiving-and-guiding frame,
ible feeding element to supply operating power
a horizontal frame on which said machine-re
ceiving-and-guiding frame is supported for tilt 35 to said elevating devices to cause the latter to
elevate said receiving-and-guiding frame.
ing upon an axis transverse to said machine-re
9. A mining apparatus comprising, in combi
ceiving-and-guiding frame, a fourth frame on
nation, a coal mining machine of the floor type
which said horizontal frame is swivelly mount
slidable directly on the floor of a mine during
ed for turning upon an upright axis, means for
adjusting the height of and for supporting said 40 the kerf cutting operation and having a project—
ing kerf cutter and ?exible feeding means in
fourth frame on said truck frame selectively in
cluding a power operated ?exible feeding element
a position in which the structure swivelly mount
attachable to an anchor in the mine for feed
ed on said fourth frame, disposed lengthwise of
ing the machine over the mine floor, and a trans
the truck, is in a position so low that the truck
wheels limit the range of horizontal swiveling of 45 port truck for the mining machine comprising a
base having traction means for propelling the
said machine-receiving-and-guiding frame and
apparatus about the mine during transport of the
in a higher position in which said machine-re
machine-receiving-and-guiding frame mounted
swiveling of said horizontal frame, to overlie one
of said truck wheels and then be inclined, by 50 thereon for adjustment into different elevated,
positions and tiltable relative to said base irre
tilting on said transverse axis, to unload a ma
spective of its elevated position into a position
chine therefrom directly onto a mine floor along
wherein its outer end engages the mine floor so
a path extending over the top; of said one of said
that the mining machine, when said ?exible feed
truck wheels, and means for actuating said
height-adjusting and supporting means to move 55 ing element is attached to the truck, may be slid
from the mine ?oor onto said guiding frame into
said fourth frame from said ?rst mentioned posi
transport position on the truck, and mechanism
tion to said second mentioned position and to
for elevating said machine-receiving-and-guid
hold it in the latter including levers pivotally
ing frame relative to said base while the mining
mounted to turn on transverse axes in the same
lines with the axes of rotation of the truck wheels 60 machine is supported thereon including a liquid
pump attachable to the truck and to which said
and disposed intermediate the truck wheels and
flexible feeding element of said feeding means
beneath said receiving-and-guiding frame in all
of the mining machine is connectable whereby
longitudinally disposed positions of the latter and
said flexible feeding means may operate the
each pivotally connected at one end to said fourth
frame, extensible power devices extending gen 65 pump, and hydraulically operated elevating de
vices disposed on said base beneath said frame
erally longitudinally of the truck also intermedi
and operatively connected to the latter and to
ate the truck wheels and beneath said receiving
which liquid under pressure is supplied from said
and-guiding frame and operatively connected to
pump.
the other ends of said levers for swinging the
latter and a power transmitting device con 70
LEON E. SIMMONS.
nected to said truck and to which the flexible
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