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Патент USA US2403817

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July 9, 1946-
I T. F. MCCARTHY
2,403,817
SCRAPER LOADER APPARATUS
Filed Feb. 15, 1945
2+
4 Sheets-Sheet 1
“July, 9, 1946-
T. F. MCCARTHY
‘2,403,817
SCRAPER LOADER APPARATUS
Filed Feb. 15, 1945
4 Sheets-Sheet 2‘ ‘
-.Mf7- 2M1
July 9, 1946-
'
T. F. MCCARTHY '
SCRAP-Bf; LOADER APPARATUS,
2,403,817
Patented July 9, 1946v
2,403,817
UNITED STATES PATENT
’ ‘OFFICE
*
2,403,817
SCRAPER LOADER APPARATUS
Timothy F. McCarthy, Indiana, Pa.
Application February 15, 1945, Serial No; 577,971
9 Claims.
1
This invention relates to improvements in
scraper loader apparatus particularly adapted to
handle loose material in mines underground, and
has as its principal objects’ to provide an im
proved form of head frame adapted to guide a
scoop or scraper to pick up loose material from
the working face of a mine where the bottom is
irregular or rolling.
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Another object of my invention is to, provide
a novel and e?icient form of , extensible and ?ex
ible head frame for a scraper, arranged to carry
the scraper over rolls in the'mine bottom and to
guide the scraper to load out the material'over
the top of the roll and then by movement of the
head frame to guide the scraper to load out the
roll and the loose material on the ground-{after
the roll has been shot.
a
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I‘ -‘
I
A more speci?c object of my invention is to
provide a movable head frame'for a scraper load
(Cl. 37-—-115)
2
ent position along the head frame than in ‘Fig- ‘
ure 3;
Figure 5 is a’ fragmentary detail view showing
certain details of one of the supporting ,jacks
‘T for the head frame and showing the construc
tion of the hinged ‘portion of the head frame in
substantially longitudinal section;
,
v
Figure 6 is an enlarged detail plan view with
‘certain parts broken away and certain other parts
10V shown in horizontal section in order to show
certain details of the transverse hinged construc
tion of theihead frame;
_
V
I
w
,_
Figure 7 is a fragmentary detail sectional view
taken substantially along line 1-1 of Figure 3 ;v
Figure 8v is a fragmentary detail sectional view
taken substantially along line 8-8 of Figure 3;
I Figure '9 is a‘ fragmentary detail transverse
sectional view taken substantially along line 9-3‘
of Figure 3; and
j
,
er apparatus including a guide frame extending 20
Figure 10 is a fragmentary detail sectional view
along'the working face of a mine and along op
taken'substantially along line Iii-l0 of Figure 3.
posite ribs thereof, and having a bottom pan ex
In the embodiment of my invention illustrated‘
tending outwardly therefrom, which is adapted ' in the drawings, a head frame l?ris shown as
to have the scraper movable therealong, to form
being positioned adjacent ‘a working face of a
a ?exible ramp or roadway for the scraper, to 25 mine to'form a reaction member for and to guide
carry the scraper over an uneven mine bottom.
a scraper'l l into and across the working face, to
An application Serial No. 568,119, ?led by me
pick up mined material, such as coal, therefrom.
The scraper H is herein shown as being a
on December 14, v1941i, shows a formof extensible
hinged type of scraper having an inner side wall
head frame somewhat similar to that of my pres
ent invention. The head frame of my present 30 12 substantially conforming to the curved form
ofrthe :head frame In, and having an outwardly‘
my prior application in that it
provided with > and forwardly curved outer’side wall l3 pivotally
an outwardly extending pan forming a support;
connected to ‘the rear end of said inner side wall.
invention, however, di?ers from that‘shown in
ing ramp or roadway for the scraper,
Said side walls are connectedtogether at their
tocarry the
scraper over an uneven mine bottomZ and is also , 35 forward ends by meansof a pair of toggle links
transversely hinged, to permit the head frame to
I'll; Ill-"pivotally connected to the forward inner
more readily conform to the mine bottom.
sidesof'said sidewalls, adjacent the lower ends
'
My invention may be more clearly understood
with, reference to the accompanying drawings
wherein:
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‘
'
, Figure 1 is a diagrammatic plan view'of a ma- /
terial handling apparatus constructed‘in accord
ance with my invention, showing theapparatus'~
ini positionfor loading from a mine room; ,
thereof.‘ A head rope l5 is‘provided to pull said
scraper inv a forward direction; Said head rope
is connected to a connecting member l6 which
is slida'bly connected to said toggle links for move_
ment therealong as the angle of said head‘rope
with respect to said scraper changes, to cause said
head 'rope'to hold said scraper in engagement
Figure 2' is a diagrammatic longitudinal sec
‘ with said head frame. Said scraper is of a form
tional view taken, subst antially along : line Z—2I
clearly shown and described in an application
Serial No. 573,505, ?led-by me on January 19,
1945, so'need not herein be'described in detail.
ofFigure
1;
I.
h
V
v
-
Figure 3 is an enlarged fragmentary detail plan
view of the loading apparatus, with [certain parts
broken away-and certain other
substantially horizontal ‘section;
partsv shown in’
Figure‘iis a: transverse sectional-view taken
substantially ;_a_long,-line;,4,—"4 of Figure 3, -showing-_ '
the. scraperin-transverse sectionand in a differ
A tail‘rope I8 is connected to the rear end of the
‘ outer side wall l3 "of said scraper and serves'to'
move said scraper in a reverse direction, to posi
tion itto obtain a new bite on the material it
isdesired to'load and to form a reaction means
for, thel's'icraper as it travels about said' head
55 ramaandtoaid in holding said scraper in the
2,403,817
3
admission of fluid under pressure to the piston
rod end of said cylinder will retractibly move
said head frame with respect to the working
proper relation with respect to said head frame
during travel of said scraper thereabout.
The head frame In includes a guide frame [9
face.
The jack 33 is herein shown as being a ?uid
pressure jack and includes an upright cylinder
extending along one rib of the working place, a ‘
guide frame 20 extending along the opposite rib
cf the working place, and a forward guide rail
2| adjustably and detachably connected to said
34 having a piston 35 movable therein.
A pis
ton rod 35 having a roof engaging member 3'!
guide frames l9 and 20, to ‘form a means for
secured to its upper end extends from said pis- guiding the scraper along the working face of
ton. A bifurcated member .39 depends from the
the mine from one ‘side frame member vto ‘the 10
lower end of said cylinder and has a floor en
other, for picking up ‘loose material from the
gaging shoe 40 transversely pivoted thereto.
working face while reacting against said guide
rail 2|. Said guide rail 2! is detachably con
nected to the guide frames I9 and :28, to permit
' 'The bracket 3| is slidably mounted on the
cylinder 34 for vertical adjustment with respect
thereto. Said bracket has an outwardly extend
the space between said frames to be opened to 15 ing-and .upwardly projecting support portion 43,
receive and store a cutting machine (not shown)
’ which extends upwardly along the inner flange
during the loading operation, and .may be .of
of the channel of the guide rail 23. Said up
various lengths of working places. ‘It may also
be sectional, if desired, as in my application Se
rial No. 568,119.
wardly projecting support portion forms an ad
20 justable support for said guide rail on said bracket
.The guide frames l9 and 20 .are .of the vsame
construction except the guide frame I9 is ar
and serves to .lift said guide rail and the bot
tom pan25 above thelground, upon vertical-move
ment of ‘said-bracket along said cylinder.
The bracket .31, .is ‘vertically moved along the
ranged to extend ‘along .theleft rib of the work
ingplace and the guide frame '20 is-arranged to
extend along the right rib of the working place, 25 cylinder'34, or is held in ?xed relation with re
spect thereto by means of a cylinder ~44 having
so one of said guide .frames ‘only will be de
a piston rod .45 extensible from its lower end.
scribed in detail herein and :the .same partnum
Said cylinder is mounted in a rearwardly pro
bers will be applied to similar parts of each :of
jecting part 46 of said bracket 3|, and said pis
said guide frames.
ton rod is mounted at its lower-end in a bracket
30
The guide frame 15 has a longitudinally ex
41 projecting :rearwardly from the member 39
tending guide rail 23 spaced above ‘the ground,
(see Figure .5). When ?uid under pressure is
and herein shown as being substantially par
admitted to the ‘head end of said cylinder 44,
allel to the left-hand rib of- the working place
said bracket '3! will be vertically moved along
during the loading operation. .Said guide vrail
is herein shown ‘as ‘being constructed vfrom a
channel opening towards the ‘ground and has
inwardly curved forward and :rear ends, .and ‘is
adapted “to be engaged by the inner sidewall
the cylinder 34 in an obvious manner.
The beam 26 extends through ayoke 5'0, mount
ed at its ends in the outer end :of the ‘bracket
3!, and is 'slidably supported in ‘said .yoke on a
roller 5|. Said roller has "a ‘convex face form
12 of the scraper II and form a guide means for
said scraper H "as itmoves towards or away from 40 ing a support for said beam, and is rotatably
mounted on -a transversely iextending ‘cap screw
the working face. A pluralityof support :mem
52, which serves to securiethe lower ‘end of said
bers 24, '24 form ‘a support :for said :guide .rail
yoke to said bracket (see Figure '4).
and ‘space it above the ground. ‘Said support
The .rear part of said guide. frame is held
members will hereinafter be more clearly 'de 45
in position by means of a fluid jack v513, similar
scribed as this speci?cation proceeds, :and ‘rest
to the jack 3'3 but having no elevating cylinder
on and are secured ‘to a bottom pan "25, extend
associated therewith. Sincesaid jack '54 is like
ing laterally from .and ‘along-said guide :rail and
the. jack .33, it .need not herein be shown or de
forming a vramp or :roadway along which the
scribed in ‘detail.
scraper -| I travels.
50
The support members 24, 24, for the guide rail
A longitudinally extending beam ‘26 is ‘secured
to the inner end .of the inwardly curved 'rear
end ‘of the guide ‘rail 23,‘and extends forwardly
therefrom in substantially parallel zrelation=with
23, each have an upwardly projecting support
portion 55, which extends within the channel of
said guide rail andabuts the inside “of the-outer
respect to the rectilinear portion of said guide
web of .the channel of saidguiderail. Saidsup
transversely extending member v2‘! connected at
its end opposite said ‘beam to said ,jguide ‘rail
23. A piston ‘rod ‘29, extensible from a ‘longi
tudinally extending‘cylinder 30, is connected to 60
pan in vertically spaced -relation with respect
thereto. Said support members each have a
rail. Said .be'am'is ‘herein shown as being tubu 55 port portion .is .secured to said guide rail, as by
welding, xto support saidguide rail .on said bottom
lar, and is connected at its :forward vend to a
lower inwardly extending recessed portion 59
having a sheave 60 mounted therein on a vertical
pin 6|. Said sheave is adapted to form an anti
said member 21 and‘serves'to advance or :retrac
friction guide ‘for the head and tail ropes of the
tibly move said guide frame with respect ‘.to ‘the
scraper, and the advance outer lower portion of
working face. Said cylinder extends ‘through
and is secured to a bracket 3| extending out 65 the base of saidsu-pport member extends beyond
the ?ange ofsaid roller ‘and is'inclined upwardly
wardly from a jack 33, which is adapted 'to .be
from said bottom plate at an angle herein shown
interposed between the mine roof and the mine
as being in alignment with the angle of the ?ange
bottom, to hold said guide‘frarne 19in position
on the ground.
Said .cylinder'is'supported ad
jacent its rear ;or head end on a bracket '32 slid
ably ‘mounted on the beam .26. Thus when ‘the
jack ~33:is ‘held 'in a stationary position, between
the mine roof and themine bottom, the admis
sion of fluid .under pressure to the head end of
the cylinder '30 willadvance said guide ‘frame to
wards the working face. In a like manner, ‘the
' of said sheave, to de?ect the head or tail ropes
for the scraper into the groove of said sheave,
when slack is taken up On said ropes. The ad
vance face ‘of the support portion 55 of said sup
port member is inclined inwardly from the outer
side of the guide rail 23 so as to deflect the head
or tail ropes ‘into the groove vof said sheave.
‘The forward portion ofthe guide ‘frame [9 is
2,403,817
5
transversely pivoted to permit said guide frame to
more readily follow an uneven mine bottom.
Said forward portion of said guide frameincludes
an inwardly curved guide rail 63, forming a for
ward extension of the guide rail 23. Said guide
rail 23 has a depending‘forwardly projecting
hinge member 64 which interleaves a depending
rear-wardly projecting hinge member 65 of the
.6
’
tween said plate and the bottom of the plate 85
to provide a sloppy joint.
The bottom pan 86 extends along the guide rail
2| and forms a continuation of the pan 8|; The
1 end of said pan 86 opposite from said pan 8|
overlaps a plate 96, secured to the bottom of the
inner end of a curved bottom pan 9|, which is
similar to the pan 8|. A loose pin and slot con
guide rail 63 and which is pivotally connected
nection similar to the connection between the
thereto by a pivotal pin 66. A tube BQ-forms a 10 pans 8| and 86, and indicated generally by refer
forward extension of the beam 26 and is pivotally
ence character 92, is provided between said pan
connected to the forward end of said beam by
86 and plate 90.
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means of a pivotal pin 18 extending through in
The bottom pan 8|- and plate 85 are provided
terleaving hinge members 1|, 1?. projecting for
with vertically aligned elongated curved slotted
wardly and rearwardly from said beam 26 and 15 portions 83, 94, respectively, spaced inwardly
tube 58, respectively. Tire pivotal axis of said
from the slot 88, through which extends the lower‘
tube 69 is coaxial with the pivotal axis of the
end of a lug 95 depending from the support mem
inwardly curved guide rail 65. Said tube 69 in
ber 61 for the inner end of the guide rail 83.. vA
tersects said guide rail at its forward end and is
retaining plate 96 is secured to the underside of
suitably secured thereto (see Figure 3) .
said lug to loosely connect said pan and plates
The inner end of the guide rail 63 is curved
to the underside of said support member, so said
inwardly at a sharper angle than the main por
pan and plates may have limited freedom of
tion thereof and is supported just before this
movement with respect to said support member
sharply curved inner end on a support member
and will move vertically with said support mem
61 somewhat similar to the support members 24,
ber upon vertical movement thereof.
24. Said guide rail is also engaged and detach
The right-hand end of the bottom pan 86 is
ably supported by an outwardly extending and
slidably connected with the, underside of the
' upwardly projecting end portion of a support‘
right-hand support member 61, to move vertically
bracket 13 on a headed pin 13a extending in
with said support member upon the admission of
wardly from said end portion of said support 30 ?uid under pressure to the cylinder 16 asso
bracket. Said pin is adapted to be engaged by
ciated with the right-hand jack 15, by means of
a slotted portion of the inner ?ange of said guide
a loose pin and slot connection (not shown) which
rail 63 and its head is adapted to engage the out_
is similar to the pin and slot connection con
side of the ?ange of said guide rail to retain said
necting the pan ill and plate 85 to the left-hand
guide rail in position on said bracket. Said 35 support member 61, so need not herein be shown
bracket is slidably mounted on a vertical cylinder
14 of a, ?uid Jack 1,5;much like the ‘bracket an
is mounted on the cylinder'34 ofithe jack 33 (see
or described in detail.
'
A support member 91 similar to the support -
member 61 is interposed between the upper side
.
s
of the bottom pan 8| and the underside of the
The jack 15 is similar to the jack 33 so need 40 inwardly curved guide rail 63. Said. support
not herein be'shown or described in detail. A
member is secured to the underside of said "guide
cylinder 16 having a piston rod 19 extensible from
rail as by welding, and is slidably mounted on
its lower end depends from a rearwardly extend
the upper side of said curved pan 8|, to allow
ing upper projection 11 of the bracket 13. The
for relative movement between said curved pan
lower end of said piston rod engages a support 45 and said guide rail upon movement of said pan
86 projecting rearwardly from the lower end of
and guide rail about their respective hinged con
said cylinder 14. The admission of ?uid under
nections.
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pressure to the head end of said cylinder will thus
The guide rail 2| is formed from a channel,
elevate said bracket and the ‘forward portion of
the ?anges of which extend upwardly, and has
Figure 9).
the head frame In.
,
A curved bottom pan 8| extends outwardly
from and conforms to the curve of the guide rail
63. A hinge member 82 is secured to the bottom
50 curved outer ends substantially conforming'to
the curve of the curved guide rail 63. The left
hand end of said guide rail 2| is detachably and
slidably connected to the upper side of said curved
guide rail 63, to permit independent movement
of said pan 8| and interleaves a hinge member
83 mounted on the forward end of the bottom pan 55 of‘the guide frame |9 with respect to the guide
25. A pivotal pin 84 connects the interleaving
portions of said hinge members together. The
advance end of said bottom pan 8| overlaps a
bottom‘ plate 85, secured to the underside of 'a
frame 28, and to provide an uninterrupted guide
for'the ‘scraper when said guide frames are in
various positions of adjustmentwith respect to
each ‘other.
As herein shown, a block I08 is
bottom pan 86, which extends outwardly from 60 mounted in the space between the ?anges of said
the guide rail 2| and is‘ adapted to support the
guide rail and is provided with an elongated
scraper || during movement therealong. LA‘rela
curved slot ||l|, conforming to the form of the
tively loose connection is provided between said
slotted portions 93 and 530i the bottom pan
pan8| and said plate 85, to permit movement of
8| and the plate 85. A pin I83, secured to the
one pan with respect to the other and to permit
the bottom pan 8| to move about the axis of the
hinge pin 84, in substantially parallel relation
guide rail 63 adjacent the support member 67
and projectingupwardly therefrom, is adapted to
extend through said curved slot, to form a slid
with-respect to the guide rail 63. Said connec
able guide for said guide rail 2 |, and also to per
tion includes a bearing member 81 depending
mit longitudinally slidable and pivotal movement
from said bottom pan 8| and extending through 70 of said guide rail 2| ‘with respect to said guide
an elongated arcuate slot 88 formed in said bot
rail 63, so the curved advance portion of said
tom plate“. A plate 88 is secured‘to the bot
guide rail 2| ymayform- a continuation of the
tom of the bearing‘member 81, to‘ hold said pan
curved forward end of said guide-rail 63, ‘in all
8 | ‘and plate 85 in connected relation with respect
positions
of said guide rails with respect to each
to each other. Enough'clearance is provided be
other. ~ The ‘right-hand . end ‘ of said guidevraili-I |:
2,403,817
8
is slidably and pivotally connected to the curved
inner portion of the right-hand guide rail 63 by
a mine, a guide frame adapted to extend along
one rib of the working place, a bottom pan ex
means of a pin and slot connection'indicated gen
forming a supporting roadway for the scraper,
erally by reference character HM.
In operation vthe apparatus is set up in the
working place much like the apparatus shown and
described in my application Serial No. 568,119.
The ‘guide frames [9 and 2!} may be independ
tending outwardly from said guide frame and
to carry said scraper over an uneven mine bot
tom, a stationary jack adapted to be interposed
between the ground and the mine roof for holding
said guide frame in position during loading, and
means mounted on said jack for elevating said
ently ‘advanced during the loading operation, as
guide frame and bottom pan to place said bot- .
described in my prior application, to enable the 10 tom
pan on top of a roll on the mine bottom,‘
entire working face to be completely loaded out
to guide the scraper to move in a plane disposed
by the scraper ll. Where a roll is encountered
on the bottom, the head frame may be advanced
above said vroll and load out material above said
roll.
by the cylinders
3!) until the loading pan
2. In a head frame for guiding a scraper to
86 is as close as ‘possible to said roll. The lacks 15 pick up loose material from the working face of
33, '33 and 15, 15 being interposed between the
a mine, a guide frame adapted to extend along
mine roof and the mine bottom to hold the head
one rib of the working place, a bottom pan ex
frame in position, fluid under pressure may be
tending outwardly from said guide frame and
admitted to the cylinders 44, All and 15, ‘i5, if
a supporting roadway for said scraper,
the roll extends entirely across the working place, 20 forming
to carry said scraper over an vuneven mine bot
to incline the pans 25, 25 upwardly from their
tom, said guideframe and bottom pan being
rear ends and to elevate the bottom pans 8| and
transversely pivoted to permit said guide frame
Bliso their bottoms are just above the top of
to conform to an uneven mine bottom, a station
the roll. Timbers may then be placed under said
ary jack for holding said guide frame in po
pans to hold them in an elevated position, and
sition during the loading operation, a movable
fluid pressure may then be released from the cyl~
jack for holding the forward end of said guide
inders ‘I6, 16 to permit the pans BI and B6 to
frame in position, and means mounted on said
rest on said timbers. The jacks l5, 15 may then
jacks and independently operable to elevate the
be released from the mine roof. The jacks 33, 33
»forward end of said guide frame and hold it in
being in engagement with the mine roof and
an elevated position to permit the forward end
?uid pressure being held in the cylinders 44, 44
of said guide frame to extend along the top of a
to hold the guide frame IS in an inclined posi
roll on the mine bottom, to support the scraper
tion, the entire head frame may be advanced
for loading from the top of said roll.
by the admission of fluid under pressure to the
3. In a head frame for ‘guiding a scraper to
head ends of the cylinders 3t, 36, to advance
pick up loose material from the working face of
said bottom pans over the top of the roll and
a mine, a guide frame adapted to extend along
permit them to rest thereon. If desired, loose
one rib of the working place, a bottom pan ex
coal may be 'shoveled under said bottom pans,
or timbers or mine ties may be placed there 40 tending outwardly from said guide frame and
forming a supporting roadway for said scraper,
under, to form a temporary support therefor.
to
carry said scraper over an uneven mine bot
The working face may then be shot down onto
tom, a ‘stationary jack adapted to be interposed
the loading pans 8|, B6 and 9!. The scraper H
between the ground and the mine roof for hold
may then be moved along said head frame on
ing said guide frame in position during load
said bottom pans, to load out the loose material
up to vthe level of said pans. When this loose 45 ing, transversely pivoted connections in-said guide
frame and bottom pan adjacent the forward ends
material has been loaded out, the jacks 15, ‘I5 and
thereof, to permit said guide frame to conform
54, 54 may be released from the mine roof and
to an uneven mine bottom, astationary jack for
the head frame l0 may be retractibly moved,
holding said guide frame in position during the
by admitting ?uid under pressure to the piston
rod ends of the cylinders 30, 3%! and releasing it 50 loading operation, means connected with said
stationary jack for positively moving said guide
from the head ends thereof, until the bottom
frame with respect to said jack along the ground,
pans Bi and 86 have been moved off the roll on
a movable .jack connected with the forward end
the bottom. The roll may then be shot down
of said guide frame for holding the forward end
and the head frame may again be advanced by
the admission of ?uid under pressure to the head 65 of said guide frame in position during loading,
and a ?uid cylinder and piston ‘mounted on each
ends of the cylinders 36, 30 and may be held
of said jacks, adapted to elevate said'guide frame
in position by the jacks 15, ‘i5 and 54, 54, to per
mit the scraper H to load out the roll.
The
and position it to conform to an uneven mine
bottom so it may form a supporting roadway for
head frame may then be further advanced to
permit the scraper to load out the loose material 60 the scraper, to carry said scraper over an uneven
in advance of the roll which was left when the
mine bottom.
bottom pans 8| and 86 were in an elevated posi
‘4. In a head frame for guiding a scraper to
pick up loose material from "the working face
tion on top of the roll.
While I have herein ‘shown and described one
of a mine, a guide frame extending ‘along each
form in which my invention maybe embodied, it 65 rib of the Working place, means adjustably con
will be understood that the construction thereof
necting said guide frames together and permit
and the arrangement of the various parts may
ting independent advancing movement of one
be altered without departing from the spirit and
guide frame with respect to the other including
scope thereof. Furthermore, I do not wish to
a transverse guide rail adapted to ‘extend along
be construed as limiting my ‘invention to the 70 the ‘working face, ‘and a separate bottom pan
speci?c embodiment illustrated, excepting as it
extending outwardly from each of ‘said ‘guide
may be limited in the appended claims.
frames and from said guide rail ‘and forming ‘a
I claim as my‘ invention:
supporting roadway to carry the scraper over'ir
1. In a head frame ‘for guiding a scraper to
regularities ‘on the mine bottom during travel of
pick :up loose material from the ‘Working face of 75
9
2,403,817
10»
said scraper up to, along, and away from the
working face.
5. In a head frame for guiding a scraper to
pick up loose material from the workingr face
' amine, a guide frame extending along each rib
of the working place, means adjustably connect
, ing said guide frames together including a trans
verse guide rail adapted to extend along the
working face, and a separate bottom pan extend
of a mine, a guide frame extending along each
rib of the working place, means adjustably con
necting said guide frames together including a
transverse guide rail adapted to extend along
the working face, and a separate bottom pan
ing outwardly from each of said guide frames and
from said guide rail and forming a supporting
roadway to carry said scraper over irregulari
ties on the mine bottom during travel of said
extending outwardly from each of said guide
scraper up to, along and away from the work
frames and from said guide rail and forming a
supporting roadway to carry the scraper over
irregularities on the mine bottom during travel
of said scraper up to. along, and away from the
ing face, and transverse pivoted connections
‘m said guide frames and said bottom pans which
extend therealong, to permit said guide rail and
its associated bottom pan to conform to an un
working face, and transverse pivoted connections 15 even mine bottom, a separate stationary holding
in said guide frames and said bottom pans which
jack adapted to be interposed between the mine
extend therealong, to permit said guide rail and
roof and the mine ?oor for holding each of said
said bottom pan extending therealong to con
guide frames in position, support means mounted
form to an uneven mine bottom and to be placed
on said jacks for vertical movement therealcng
on too of irregularities thereon.
_
20 and supporting connections between said sup
6. In a head frame for guiding a scraper to
pick up loose material from’ the working face of
a .mine, a guide frame extending along each rib
of the working place, means adiustably connect
ing said guide frames together including a trans»
verse guide rail adapted to extend along the
working face, and a separate bottom pan extend
port means and said guide frames, elevating
means operatively connected with said support
means for elevating the forward ends of said
guide frames, a separate movable holding jack
25 for the forward portions of the pivoted portions
of each of said guide frames, for holding said piv
oted portions of said guide frames from move
,ment with respect to the ground during the load
ing outwardly from each of said guide frames,
another bottom pan extending outwardly from
ing operation, and means mounted on said jacks
said guide rail, said bottom pans forming asup 30' for vertical movement therealong for elevating
porting roadway to carry the scraper over irreg
the pivoted portions of said guide frames and
ularities on the mine bottom during travel‘of
for lifting said guide rail and its associated bot
said scraper up to, along, and away from the
working face, a separate stationary holding jack
for holding each of said guide frames in posi
tion, said jacks being adapted to be interposed
between the ground and the mine roof, and
tom pan above the ground about said pivoted
' connections.
9. In a head frame for guiding a scraper to
pick up loose material from the working face of .
a mine, a guide frame extending along each rib
means mounted on said jacks for elevating the .
of the working place, means adjustably connect
forward portions of said guide frames to place
ing said guide frames together including a trans
said bottom pan, which extends along said guide 40 verse guide rail adapted to extend along the
rail and the working face, into position to be
working face, and a separate bottom pan extend
placed on top of a roll on the mine bottom, to.
ing outwardly from each of said guide frames
support said scraper during movement over said
and from said guide rail and forming a support
roll.
ing roadway to carry said scraper over irregular;
'7. In a head frame for guiding a scraper to 45 ities on the mine bottom during travel of said
pick up loose material from the working face of
scraper up to, along and away from the working
a mine, a guide frame extending along each rib
face, transverse pivoted connections in said guide
of the working place, means adjustably connect
frames and said bottom pans which-extend there
ing said guide frames together including a trans
along, to permit said guide rail and its associ
verse guide rail adapted to extend along the work 50 ated bottom pan to conform to an uneven mine
ing face, and a separate bottom pan extending
bottom, a separate stationary holding jack
outwardly from each of said guide frames and
adapted to be interposed between the mine roof
from said guide rail and forminga supporting
and the mine floor for holding each of said guide
roadway to carry said scraper over irregularities
frames in position, a ?uid pressure cylinder and
on the mine bottom during travel of said scraper 55, piston on each of said stationary jacks having
up to, along, and away from the working face,
operative connection with said guide frames for
a separate stationary holding jack adapted to be v rectilinearly moving said guide frames along the
interposed between the ground and the mine roof
for holding each of said guide frames in posi- "
tion, a ?uid pressure cylinder and piston mounted 60
on each of said jacks and having operative con
ground independently of each other, other ?uid
pressure cylinders and pistons ‘on said jacks and
having operative connection with said guide
frames for elevating the advance ends of said
nection with said guide frames for moving said
guide frames and for holding said guide frames
guide frames along the ground independently of
in an elevated position, a separate movable hold
each other, and other fluid pressure cylinders and
ing jack for the forward portions of the pivoted ‘
pistons mounted on said jacks and having oper 65 portions of said guide frames for holding said
ative connection with said guide frames for ele
pivoted portions of said guide frames from move
vating the advance ends of said guide frames,
ment about the ground, and fluid pressure means
and for holding said guide frames in an elevated Y on. said jacks for elevating the pivoted portions
position to conform to an uneven mine‘ bottom
of said guide frames and for lifting said guide
and to position said bottom pan which extends 70 rail and its associated bottom pan above the
along the working face on top of a roll on the
ground into position to be placed on top of a
mine bottom.
,
roll on the mine bottom.
8. In a head frame for guiding'a scraper to
pick up loose material from the working face of
TIMOTHY F. MCCARTHY.
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