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Патент USA US3088729

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May 7’ 1963
3,088,719
J. GoNsKl
BORING TYPE CONTINUOUS MININGMACHINE
2 Sheets-Sheet l
Filed May 1l, 1961
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May 7, 1963
J. GoNsKl
3,088,719
BORING TYPE CONTINUOUS MINING- MACHINE
Filed May l1, 1961
2 Sheets-Sheet 2
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Patented May 7, 1963
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tional view taken substantially along line 4-4 of FIG
' URE 2.
3,088,719
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In the embodiment of the invention illustrated in the
drawings,'I have shown in FIGURE l a continuous min
>ing machine 10 of the boring type having a mobile base
or main frame (not shown) having a cutter frame 11
BORING TYPE CONTINUOUS MINING MACHINE
Joseph Gonski, Chicago, Ill., assignor to Goodman _Manu
l factoring Company, Chicago, Ill., a corporation of
Illinois
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_
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Filed May 11, 1961, Ser. No. 109,434
5 Claims. (Cl. 262-'-9)
supported thereon and extending in advance thereof, and
mounted on the main frame of the machine in a conven
tional manner, for vertical adjustment with respect there
A,This invention relates' to improvements in continuous
-to and for angular adjustment about axes extending trans
mining machines _of the kboring type and more parfucu 10 versely of the main frame of the machine.
. larly relates to an improved _means for mining the up
The cutter frame 11 has two rotary boring heads 12
standing cusps left between the boring heads of the rna
chine and collecting the mined material for loading.
,mounted on each side of a central throat 13, for rotation
about laterally `spaced horizontal axes extending longi
Inycontinuous mining machines of the boring type,
tudinal of the machine, for cutting contiguous bores in
15
land particularly mining machines arranged to mine _wide
a mine face, leaving upstanding and depending cusps, ex
working places and having more than two laterally spaced ' tending upwardly from the mine licor and depending
boring heads, the lower trimmer chain trimming the up
from the mine roof, between said boring heads.
standing cusps kbetween the boring heads travels for the
Each boring head 12, as shown in FIGURE l, has
length ofthe lower trimmer bar, and as a result progresses
a radially extending boring arm 15 extending radially of
20
the mined material towards one rib of the Working place.
` a hub 16 and having an annular pilot cutter 17 projecting
_ This vmaterial will collect along one rib of the working
place presenting an obstacle over which the machine
' forwardly of said hub, and radially spaced cutter~ sup
ports 18 and 19 spaced radially outwardly of said pilot
cutter. The pilot cutter and cutter supports 18 and 19
frequently rides, and requiring a substantial amount of
_manipulation onthe part' of the operator of the ma
’ Vcarry the usual'cutter bits for cutting a plurality of radi
chine to avoid rolling'over the accumulated loose material
ally spaced annular kerfs in the mine face, as the boring
and keep the machine level.
A principal object of the present invention is to remedy i l
' heads 12 on the side of the machine, which in FIGURE l
is a right hand'side of the machine when looking directly
at this ligure, rotate in clockwise directions toward the
cutting the cusps from opposite sides toward the center.
throat 13. The boring heads 12 on the opposite side
30
of the machine ‘and progressing the mined material to
of the machine `from those just described are driven to
the foregoing difñculties by trimming the lower cusps by
wards the center of the machine, during the cusp cutting
operation.
rotate in counterclockwise directions to progress the
mined material. toward the center of the machine. The
v
Another object of the invention is to improve upon
boring heads 12 also have plates 2t) extending angularly
continuous mining machines of the boring type and
inwardly from the advance sides thereof between the
particularly those machines having more than two boring 35 cutter supports 18 and 19, which serve as paddles to aid
heads and a center throat, by providing individual trim
in progressing the mined material toward the center of
merchains traveling along pairs of upper and lower trim
the machine in a conventional manner.
' mer bars o_n each side of the machine, and by sotraining
The machine Ialso has a conveyor 21 extending there
and driving the trimmer chains that their lower runs
along from .a position adjacent the ground, rearwardly of
40
will travel inwardly from the outer sides of the machine
a support 22 for »a rotary _trimmer bar 23, mounted be
toward each other.
v
tween two trimmer bars' 24 and 2‘5- extending from op
Still another and rimportant object of the invention is
posite sides of the rotary trimmer bar 23V toward the outer
to provide an improved form of cusp cutting and ma- *Y sides of the machine and «supported on the support 22..
terial collecting means for continuous mining machines
vertically extending pusher plates 27 a-re mounted on and
of the boring type and particularly those machines having
extend upwardly from the >support 22 for the lower trim
more than two boring heads positioned on opposite. sides
mer .bars 24 and 25 on opposite sides of the conveyor 21,
of a central throat and elevating conveyor, in which the,
to confine the mined coal to be progressed toward said
upstanding and depending cusps on each side of the
conveyor by the rotating boring heads 12 and by trimmer
throat are cut away by individual trimmer chains spaced
chains 28 Vand 29 traveling along the trimmer bars 24
rearwardly of the boring heads, wherein the lower runs
and 25' from the outerlsides ofthe machine toward the
of 4the trimmer chains are driven toward each other to
throat 13 Iand rotary trimmer bar 23, as 'will hereinafter
progress the mined material toward~ the center of the
more clearly appear as this speciñcation proceeds.
machine, and in which the center upstanding cusp in
The pusher plates 27 have upwardly opening slots 32
front of the throat of the conveyor is cut by a rotary> 55 therein registering with the hubs 16 and `accommodating
’ trimmer bar between thelower runs of the trimmer chain
vertical adjustable movement of the trimmer bars 24 and
'and rotated in a direction to'load the mined material
2'5 and the rotary trimmer bar 23 toward and from the
onto the elevating conveyor of the machine.
hubs 16. The pusher plates 27 also have angularly in
These and other objects of the invention will appear
wardly extending plate portions 33, extending inwardly
from time to time as the following speciñcation proceeds 60 toward the conveyor 21 and terminating into parallel
and with reference vt'o the accompanying drawings where
’ longitudinally extending portions 34, extending along the
inside of »side walls 35 for the conveyor 21. The parallel
1n:
>longitudinally extending wall portions 34 of the pusher
FIGURE l isa lfront end view of a continuous min
Aingmachine `of the boring type constructed in accord- ~ . plates 27 also extend along the inside of the throat 33,
65 to ,conñne the mined material to be progressed tow-ard and
yance with the principles of the present invention;
FIGURE'Z is'a'n enlarged partial fragmentary hori- " onto the conveyor 21 by the rotary tr-immer bar 23 in
zontal sectional view taken substantially along line 2-2
front of the throat 13 in cooperation with the lower trim
Of FIGURE l;
FIGURE 3 is an enlarged partial fragmentary vertical
mer chains 28 and 39 and the boring heads 12.
The lower ,trimmer ba-rs 24 and 25 and rotary trimmer
_sectional View taken substantially along line 3-3 of
FIGURE v2; and
_
.
_
,Y
FIGURE 4 is a partial fragmentary longitudinal sec
l
bar 23,`mount`e'dtherebetween, are suspendedfrom the
cutter f-rarnell on piston rods 36 of hydraulic jacks (not
` shown)."`"l"h'e piston rods 36ware mounted on the support
3,088,719
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22 and are extensibly and retractably movable with respect
to cylinders (not shown) mounted on the front face of
the cutter frame 11. The piston rods 36 thus adjustably
move said lower trimmer bars and the rotary trirn-mer bar
23 with respect to the :ground in a conventional manner,
and are no part of the present invention so need not
herein be shown or described fur-ther.
An upper support 39 for upper trimmer bars 40k and 41
is mounted on the cutter frame on laterally spaced ver
tically extending hydraulic jacks 43. The hydraulic jacks
43, as .shown in FIGURE l are mounted on the front
of the cutter frame 11 and extend vertically therefrom
and are operable to support the upper support 39‘ and to
vertically adjust said support and the trimmer bars 40
4
bar, and recessing the heads of the said screws 63 within
said trimmer bar. The cutter bits 61 are pitched to cut
as the trimmer bar is rotating upwardly from the mine
floor, in a direction, which in FIGURE 4 is shown `as
being a counterclockwise direction.
The trimmer bar 23 has a shaft 65 mounted in one end
thereof and projecting outwardly therefrom and jour
nalled in an anti-friction bearing 66, carried in a bear
ing support arm 6'7 extending forwardly of the rotary
10 cutter bar support 22.
A pin 69 extending radially
through the trimmer bar and shaft 65 is provided to re
tain said shaft in position with respect to said trimmer
bar and to effect a drive to said trimmer bar from said
shaft. A similar shaft (not shown) is recessed in and
and 41 to the required cutting height of the machine, 15 extends from the opposite end of the trimmer bar 23 and
and to retain said support and trimmer bars in yselected
adjusted cutting positions.
The upper trimmer bar 4d -is positioned to cut the de
pending cusps left between the two left hand boring heads
12, and has the usual channeled guide (not shown) ex
tending therealong, forming a guide for the trimmer chain
28 and also has corner sprockets 44 at opposite ends
thereof, about which the trimmer chain 28> is trained.
From the outer `corner sprocket 44 the trimmer chain 28
is journalled in the rotary cutter bar support in a manner
similar to which the shaft 65 is journalled therein.
The shaft 65 has a bevel gear 7@ keyed or otherwise
secured to the outer end thereof meshing with and driven
from a bevel gear '71 journalled on a stub shaft 73, here
in shown as extending inwardly from and being formed
integrally with an end cap 74 for the rotary cutter bar
support 22. The bevel gear 71 has a spur gear 75 formed
integrally therewith, meshing with and driven from a spur
extends inwardly around .a tension idler 45 on a tension 25 gear 76 keyed or otherwise secured to a shaft 77 jour
nalled at one end in the `cap 74 and at its opposite end
arm 46, maintaining a uniform tension on the trimmer
in a bearing support 79 shown as being formed integrally
chain 29 in all vertical posi-tions of the trimmer bars 40
with and forming the front wall of the rotary trimmer
and 24 with respect to each other. The trimmer chain
bar support 22. The shaft 77 extends outwardly of the
28 extends outwardly from the tension idler 45 and around
a drive sprocket 4'7, ykeyed or 4otherwise secured to the 30 bearing support "79 and is driven from the sprocket 49
which is keyed or otherwise secured thereto and is driven
outer hub 16 and driven thereby. From thence, the trim
mer chain 28 extends downwardly around a corner
fro-m the trimmer chain 28.
sprocket 42 to and along a channeled lguide 48, extending
A stripper 8G is provided to strip the mined material
from the cutter bits 61. Said stripper is shown in FIG
turns about a corner sprocket I49 .at the «inner end of 35 URE 4 as abutting the fiat top face of the trimmer bar
support 22 and as being secured .thereto by cap or machine
the trimmer bar 24, upwardly to an idler sprocket 50
screws 81. The stripper 80 has a forward end portion
freely mounted on a hub 16 adjacent the throat 13 and
S2 inclined upwardly from the advance edge of a fiat top
to and around the inner corner .sprocket 44. The outer
surface `of the trimmer bar support 22 and has an under
left hand rotary boring head 12, rotating in a counter
clockwise direction toward the throat `13 will drive the 40 surface 83 conforming generally -to the paths of travel
of the cutter bits 61 as they pass along ‘and beneath said
drive sprocket 46 through the hub 16 to rotate in a similar
inclined undersurface. The inclined undersurface S3
direction and drive the trimmer chain 28 to move along
forms la general continuation of a forward arcuate sur
the trimmer bar 24 toward the «inner end thereof, and
face 8S, spaced from and conforming generally to the
progress the cuttings toward the rotary trimmer bar 23
to be picked up thereby and deposited onto the con 45 paths of travel of the cutter bits 61, and cooperating with
the stripper Si) to prevent the carrying of the cuttings
veyor 21.
The trimmer bar 41 is like the cutter bar 40', but is
downwardly along the trimmer bar support 22, and the
jamming of the cuttings between said trimmer bar support
longer than said trimmer bar in that it extends over the
throat 13 to cut the depending cusp lef-t between the
and rotary trimmer bar 23.
two innermost boring heads 12. ‘Said trimmer bar has 50
The rotary trimmer bar 23 thus serves to cut the cen
corner sprockets 51 at opposite ends thereof. The trim
tral cusp in front of the throat 13 between the innermost
mer chain 29' turns about the outermost corner sprocket
boring heads 12, as shown in FIGURE 4, and also serves
along the lower trimmer bar 24.
The trimmer chain
51 »to and >about a tension idler 53 on the end of a take-up
arm 54, like the take-up arm 46 and tension idler 45.
to progress the mined cusp onto the conveyor 21, as well
as to load the loose mined material progressed toward
From thence, :the trimmer chain is trained about a drive 55 said rotary trimmer bar by the trimmer chains 2S and
sprocket ‘55 keyed or otherwise secured to the outer hub
29, onto said conveyor, and cooperates with said trimmer
16 and downwardly therefrom about a corner sprocket
chains to prevent the accumulation of cuttings at one side
56 on the outer end of the right hand trimmer bar 25.
or the other of the working place.
The trimmer chain 29 is then guided for movement `along
In this form of the invention, the mined material is
said trimmer bar toward the rotary trimmer bar 23, about 60 progressed inwardly from the outer side of the machine
a corner sprocket 57 at the inner end of the trimmer bar
by the two trimmer chains 89 and 90 traveling toward
25, and upwardly of said idler about an idler 59 freely
each other, and the pusher plates or paddles 20 on the
mounted on the inner hub 16, to and about the inner
boring arms 12, in cooperation with the pusher plates
corner sprocket 51.
27, serve to progress the mined material toward the
The two trimmer chains are thus driven to trim the 65 center of the machine to be picked up by the conveyor 21
cusps depending from the mine roof while traveling out
as the machine is advanced into the working place.
wardly toward the outer sides of the machine, and to trim
While I have herein shown and described one form in
the cusps upstanding from the mined door, while traveling
which my invention may be'embodied, it may be under
inwardly toward the rotary trimmer bar 23.
The rotary trimmer bar 23, as shown in FIGURES 70 stood that various variations and modifications in the in
vention may be attained without departing from the spirit
2 and 4, is in the general form of a hollow «sh-aft having
and scope of ythe novel concepts thereof, as defined by
bit receiving sockets 60 extending radially therein for the
the claims appended hereto.
length thereof. Cutter bits 61 are retained in said sockets
I claim as my invention:
by the usual set screws 63, entering said sockets through
1. In a continuous mining machine, a mobile main
slots or recessed portions 64 extending Ialong said trimmer 75
3,088,719
5
frame having a conveyor extending therealong, a cutter
6
opposite sides of said throat and progressing the mined
frame supported in advance of said main frame and hav
material toward said throat, and a rotary trimmer bar
ing a throat opening to said conveyor, at least one rotary
Iboring head mounted on said cutter frame on each -side of
mounted on the lowermost trimmer bars in the space
therebetween, and a drive connection from at least one of
said throat, laterally spaced upper and lower trimmer bars
mounted rearwardly of said boring heads on each side of
said trimmer chains to said trimmer bar for drivinlg said
trimmer bar to cut the upstanding cusp left between the
innermost of said boring heads and to load said cusp and
mined material progressed toward said trimmer bar by
said throat, a drive sprocket and aan idler sprocket ro
tatably mounted on said cutter frame on each side of said
said trimmer chains onto said conveyor.
throat, individual trimmer chains on each side of said
4. In a continuous mining machine, a mobile main
throat guided for movement along said upper and lower 10
frame having a conveyor extending therealong, a cutter
trimmer bars :and meshing with the associated idler
frame supported in advance of said main frame and hav
sprockets and drive sprockets and driven by said drive
ing a throat opening to said conveyor, a plurali-ty of ro
sprockets to travel along the lower of said trimmer bars
tary boring heads mounted on said cutter frame in ad
toward each other, said trimmer chains traveling along
the lower of Said trimmer bars changing their directions 15 vance -thereof and rotatably driven about parallel longi
tudinal axes spaced on opposite sides of said throat, a
of travel adjacent opposite sides of said throat to progress
pair of upper and lower trimmer bars mounted on said
the mined material toward said throat, and a rotary
‘cutter frame rearwardly of said boring heads on each
trimmer bar mounted between said lower trimmer bars
side of said throat, a drive sprocket and an idler sprocket
in advance of said throat ‘and rotatably driven to cut the
upstanding cusp left by said boring heads in advance of 20 on each side of said throat, `said upper and lower trimmer
bars having corner sprockets at opposite ends thereof,
said throat and to load the mined material advanced by
and individual trimmer chains in association with each
said trimmer chains toward said throat onto said con
idler sprocket and drive sprocket and trained about said
veyor.
corner sprockets along said trimmer bars on each side of
2. In a continuous mining machine, a mobile main
frame having a conveyor extending therealong, a cutter 25 said throat, the innermost lower corner sprockets being
positioned at opposite sides of said throat and changing
frame supported in advance of said main frame and hav
the directions of travel of said trimmer chains as they
ing a throat opening to said conveyor, aft least two hori
approach said throat, a rotary trimmer bar mounted on
zontally aligned rotary boring heads mounted on said
said lower trimmer bars in the space therebetween, and
cutter frame on each side of said throat and rotatably
driven about parallel spaced longitudinal axes on op 30 a drive connection from the innermost corner sprocket
on a lower trimmer bar for rotatably driving said trimmer
posite sides of said throat in directions to progress the
bar to cut the cusp in front of said throat and to load
mined material toward said throat, horizontally aligned
the mined material progressed to said trimmer bar by
laterally spaced upper and lower trimmer bars on each
said trimmer chains onto said conveyor.
side of said throat and mounted on said cutter trame rear
5. In a continuous mining machine, a mobile main
wardly of said boring heads, a drive sprocket and an 35
frame having a conveyor extending therealong, a cutter
idler sprocket on each side of said throat, individual
frame supported in advance of said
frame and hav
trimmer chains meshing with associated drive sprockets
ing a throat opening to said conveyor, a plurality of ro
and idler sprockets and driven by said drive sprockets to
tary .boring heads mounted on said cutter frame in ad-r
travel along .the lower of said trimmer bars toward each
other, said trimmer chains traveling along the lower of 40 vance thereof and rotatably driven about spaced parallel
longitudinal axes on opposite sides of said throat, two
said trimmer bars changing their directions of travel ad
pairs of upper and lower trimmer bars on opposite sides
jacent opposite sides of said throat to progress the mined
of said throat and mounted on said cutter trame rear
material toward said throat, and a rotary trimmer bar in
front of said throat mounted in the space between said 45 wardly of said boring heads, a drive sprocket and an idler
sprocket on each side of said throat in association with
lower trimmer bars and rotatably driven to cut the up
each pair of upper and lower trimmer bars, individual
standing cusp between the innermost of said boring heads
trimmer `chains meshing with said drive sprocket and
and to load the mined material progressed toward said
said idler sprocket and guided for movement along said
throat lby said trimmer chains, onto said conveyor.
3. In a continuous mining machine, a mobile main 50 trimmer bars and driven by said «drive sprockets to travel
along the lower of said trimmer bars toward each other,
frame having a conveyor extending therealong, a cutter
a rotary trimmer bar mounted on the lowermost of said
frame supported in advance of Said main frame and
trimmer bars in the space therebetween and in alignment
having a throat opening to said conveyor, at least two
therewith and having cutter bits projecting radially there
horizontally aligned rotary boring heads mounted on said
cutter frame on each side of said throat and rotatably 55 from, and -a drive connection from one of said trimmer
chains to said rotary trimmer bar comprising a corner
driven about parallel spaced longitudinal axes on opposite
sprocket meshing with a trimmer chain and journalled
sides of said throat in directions to progress the mined
inwardly of the inner end of a `lowerrnost of said trimmer
material toward said throat, horizontally aligned laterally
bars and driven by said trimmer chain, and a geared drive
spaced upper and lower trimmer bars on each side of
said throat and mounted on said cutter frame rearwardly 60 lconnection from said corner sprocket to said rotary
trimmer bar.
of said boring heads, a drive sprocket and an idler
sprocket on each side of said throat, individual trimmer
References Cited in the file of this patent
chains meshing with associated drive sprockets and idler
UNITED STATES PATENTS
sprockets and driven by said drive sprockets to travel
along the lower of said trimmer bars toward each other,
said trimmer chains traveling along the lower of said
trimmer bars ‘changing their directions of travel adjacent
2,770,448
2,802,654
2,877,005
Miller _______________ __ NOV. 13, 1956
Gonski ______________ _- Aug. 13, 1957
Silks ________________ __ Mar. 10, 1959
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