US1742178A

US1742178A - Mining machine

Info

Publication number: US1742178A
Application number: US692176A
Authority: US
Inventors: Louis A Maxson
Original assignee: Sullivan Machinery Co
Current assignee: Sullivan Machinery Co
Priority date: 1924-02-11
Filing date: 1924-02-11
Publication date: 1929-12-31
Anticipated expiration: 1946-12-31

Description

L. A. MAXSON lMINING MACHINE Dec. 3l, 1929.

okriginal'iled Feb. 11,' 1924 f77/ven r.'

N E s@ Patented Dec. 31, 1929 UNlifEl STATES ,PATENT orifice LOUIS A. l'fIAXSON, OF ULAREIVONT, NEW' HAMPSE IRE, ASSIGNOR- TO SULLIVAN MA-` CHINERY COMPANY, A CORPORATION OF IVIASSACHSETTS MINING MACHINE Application led February 11, 1824, Serial My invention relates to mining machines, and more particularly to mining machines of the so-ealled room and pillar type.

\ An object of my invention is to provide an improved mining machine. Jrnother object of my invention is to provide an improved mining machine which will be very compact and low and readily controlled. Other objects and advantages of my invention will hereinafter more fully appear'.

In the accompanying drawing I have shown for purposes of illust-ration one form and a modiiication which my invention may assume in practice.

In this drawing,

Fig. 1 is a plan view with parts broken away of one illustrative embodiment of my invention.

Fig. 2 is a view partially in side elevation and partially in central vertical longitudinal section, the view being taken substantially on line 2 2 of Fig. 1.

Fig. 3 is an enlarged detail sectional view of a portion of the feeding mechanism.

Fig. 4 is a transverse sectional view showing a modification in the construction.

Referring to the drawing and noting first Figs. 1 to 3, it will be observed that the illustrative embodiment of my i vention comprises a mining machine having a bottom plate 1 upon which it is slidable during cutting. This bottom plate at the front end thereof supports a motor casing 2, while to the rear of the motor easing is a gear casing 3. Projecting from the front end of the motor casing is a cutter bar which, except for the fact that at its foremost end it has a semicircular portion, might be roughly sai-d to be triangular in shape, this har being held in any suitable manner rigidly with respect to the body of the mining machine. Herein it will be observed that the guideways 4 for the cutter chain 5 are extended along theside of the motor casing and these extend back for the full length of this casing and to a point to the rear of the front end of the gear casing 3. It will be noted that the cutter chain 5. is guided, adjacent the junction of the cutter bar with the motor casing, by rollers projecting through the bottom of the No. 692,176. Renewed November 16, 1927'. p

guideways 4, these rollers being 4designated. 6. Corresponding rollers are arranged to the rear end of the rear extremities of the guideways 4, these latter rollers being designated 7, while still further lto the rear and midway between the rollers 7 there is arranged a cutter chain driving sprocket 8, the plane of the spree-liet being the same as the plane of the chain. It will be obvious that,

f if desired, sprockets could be substituted for the rollers 7, were this desired. Within the motor housing 2 'there is a motor 10 having an armature shaft 11 which carries a spur pinion 12. This meshes with a slightly larger spur gear 13 secured to a horizontal shaft 14 journaled in bearings 15 and 16 carried upon the bottom plate 1. Between the bearings 15 and 16 the shaft 14 carries a worm 17 whose function will be later described. Gn the rear end of the shaft 14 is a spur pinion 18 which meshes with a considerably larger spur gear 19 secured to a shaft 20 journaled in bearings 21 upon a partition wall 22 forming a. part of the gear casing. The shaft 2O carries a bevel pinion which drives a bevel gear 24 which is mounted upon a shaft 25. Connected in non-rotative relation to the gear 24 is a clutch sleeve 26 which is vertically reciprocable by a shipper 27 which is carried by a horizontal shaft 28 journaled as at 29 in a bearing carried by the portion 22 of the housing and extending through a bearing 30 in the rear wall of the gear casing. A handle 31 operates to oscillate the shaft 28 and this is provided with latch means of any suitable type cooperating with a bar 32 to hold the handle 31 in positions for clutching and disengagement of the clutch. The clutch sleeve 26 is provided with clutch teeth 33 adapted to engage with teeth 34 upon a sleeve 35 which is secured in driving relation to the sprocket 8. It will accordingly be apparent that the armature shaft 11 of the motor 10, through the pinion 12, gear 18, shaft 14, pinion 18, gear 19. bevel pinion 23, bevel gear 24 and the clutch mechanism described, drives the cutter chain driving sprocket 8.

Now returning to the worm 17, it will be noted that this drives a worm wheel 40 which is j ournaled upon the abutting ends of a pair of shafts 41 and 42 which together extend completely across the gear casing` and is likewise journaled in bearings 48 atits opposite sides. Rigidly connected to the gear, at the opposite sides thereof, are two clutch members and 46 which are adapted to eooperate with clutch teeth 4T and 48 formed on the adjacent sides ot transversely slidable clutch members 49 and 50 which are respectively splined to the shafts 41 and 42. It will be observed that, outside of the clutch meminers 49 and 50, there are arranged stationary bearings 51 and 52 which not only serve as bearings but also as inountings for stationary clutch members 53 and respectively. The clutch members 49 and 50 have te th 58 and 54 adapted to cooperate with these s'ationary clutch members. lt will further be noted that journaled upon bushings surroundin` the shafts 41 and 42 are brake drum members and 5G which are also carriers for gears 57, the latter being rotatably mounted upon studs 58 projecting from the members 55 and 50 (see Fie: ln con'nnon vertical longitudinally extending planes with the gears 57 are driving,T pinions 59 respectively secured to the f ha'lts 4l and 42, and enclosing the pinions 5T and 59 are larger internal gears G0 and Gl, the gear 00 cooperating` with the pinions 5i' and 59 which form a part ot the driving mechanism associated with the shat't 41. rllhese internal gears 60 and 01 carry tubular shafts 62 and 625 respectively which at their outer ends carry pinions 6l and G5 respectively, and the latter are arranged in orivingl relation with internal gears 06 and GT formed herein integral with the interior peripheries oit rope windingdrums 71 and 7 2. rCooperating` with the brake drum members and 56 are brake bands T33 and 74 held against rotation by any suitable means and having); mechanismv `generally designated 75, and which may be et any suitable torni, but which is herein shown as incuding; oppositely threaded portions upon rods 7G cooperating with nuts 77 and 78 secured to the opposite extremities ot the brake band, the rods`76 being` provided with handles T9 and 80, at the rear end ot the machine Yi'or permitting their operation. For the purpose ot shitting; the clutch members 49 and 50 there are journaled upon suitable projections 81 and 82 clutc` shipper members 83 and 84 to whose forwardly projecting' arms there is pivotally connected a link 85, which link is adapted to be reciprocated in opposite directions by a bell crank lever 86 whose oscillation is secured by a rod 87 extending out through the rear end of the machine and pro vided with a handle 88, there beine; provided any suitable means et any desired type for holding` this rod in its several positions of adjustment. It will be observed that a ina` chine ot the type illustrated may cut in opposite directions it this be desired. Herein direction. The cutter chain is 2(guarded by bot-like covers where it passes alongv the and runs within rear casing hous` side et the motor housing spaces inovided within the ing.

From the it'oregroing description the mode ot operation of the mechanism will be readily apparent. The operation ot the cutter chain driving sprocket has already been described and need not be repeated. W hen cutting from right to lett, it will be observed that the worin 1i' rotates clockwise when viewed ilrom the rear, causing a counterclockwise rotation ol the worin wheel 40 in Fig. 2. AThis causes, when the clutch 50 thrown to cans engagement of the teeth i6 and 48, counterclockwise rotation ot the shaft 42 and a cori-espending` counterclock'wise rotation ot the pinion 59 which is secured thereon. lVhen the brake band 74 is applied, it will be evident that the corresponding rear 5T will be held against bodily motion and will simply drive the gear G1 in a clockwise direction and this will result in driving' ot' the correspoiidingv pinion ina clockwise direction and so rotation ot the drum 72 in a. clockwise direction with restdtant winding' in of the leading cable 91. lt will be noted that by virtue of the construction sho-wn, when the clutch teeth 4G and 48 are engaged, the clutch teeth 58 and 53 are engaged and so the shaft 41 is held positively against rotation. As a result, ii the brake band 73 is held tight, t-he drum 71 will be incapable ot rotation, but by all-owing;` the drum T8 to s ip, it will be readily possible to secure any desired rate of paying out of the tail rope 90.

Now reterring to Fig. 4, it will be noted that a modiiied construction has been disclosed in which the guide rollers 7 ray be omitted and in which two diiving, sprockets 101 and 102 may be employed. ln this 'torni it will be noticed that a gear 108 is supported and journaled by means (not shown) for rotation relative to the near 24. The 103 meshes with gears 104 and 105 respectively operatively connected in drivingl relation with the cutter chain drivino sprockets 102 and 101. A clutch 106 is arranged with pins 107 adapted to be projected through the gear 24 and into openings (not shown) in the gear 103 tor the purpose oit clutching the gear 103 to the gear 24 when driving ot the cutter chain is desired. This construction provides one less angle in the cut-ter chain and a double sprocket drive therefor.

lli

It will be observed that in both species truck driving means driven from the gear 2i may be provided and such mechanism is shown at 108 in Fig. 2. At 110 is shown a handle for operating a suitable motor con-I troller and reverse mechanism which is not shown, but which may be arranged in the space available for this purpose directly forward from this handle, though it will be evident that there are other spaces in which it miffht be put.`

yWhile I have in this application specifically described one form and a modification which my invention may assume in practice, it will be understood that this form of the same and the modification thereof are shown for purposes of illustration and that the invention may be modified and embodied in various other forms without departing from its spirit or che scope of the appended claims.

IVhat I clair-n as new and desire to secure by Letters Patent is y l. In a room and pillar mining machine, a cutter chain, means for guiding the same for circulation in an orbit, and means for driving the same including a motor whose projection on a horizontal plane lies entirely within the projection on such plane of the inner edge of the orbit of the cutter chain, the height of said motor substantially determining the height of the machine.

2. In a mining machine, a. cutter chain, means for guiding the same for circulation in an orbit, and means for driving the same including a motor whose projection on a horizontall plane lies entirely within the projection on such plane of the inner edge of the orbit of the cutter chain and which is cut by a horizontal plane passing through the cutter chain.

3. In a mining machine, a cutter chain, means for guiding the same in an orbit, and means for driving the same including a motor whose bottom lies inside the orbit and below the top thereof.

l. In a mining machine, a cutter chain, means for guiding the same in an orbit, and means for driving the same including a motor whose bottom lies inside the orbit and substantially on the bottom of the mine.

5. In a room and pillar miningl machine, a projecting cutter bar, a motor, the height of said motor substantially determining the height of the machine and a cutter chain circulating around the periphery of the cutter bar and of the motor and driven by the latter.

6. In a room and pillar mining machine, a motor having a horizontal, longitudinally extending armature shaft, a shaft driven therebv parallel thereto and below and to the rear thereof, cutter chain driving mechanism driven from the rear end of said Shaft, and

feeding mechanism for feeding said machine f upon its bottom upon the mine bottom during cuttin@` including a feed 4operating member motor having a horizontal, longitudinally exy tending armature shaft, a shaft driven thereby parallel thereto and below and to the rear thereof, cutter chain driving mechanism driven from feeding mechanism for feeding said machine upon its bottom upon the mine bottom during cutting including a feed operating niember having flexible feeding means cooperating directly therewith and a driving element driven by said second mentioned shaft between the ends thereof and rotatable on an axis transverse to and above said shaft.

8. In a room and pillar miningmachine, a motor having a horizontal, longitudinally extending armature shaft, a shaft driven thereby parallel thereto and below and to the rear thereof, cutter chain driving mechanism driven from the rear end of said shaft, and 'feeding mechanism including a pair of feed operating members each adapted to cooperate directly with flexible feeding means and disposed one at each side of said machine and actuating means therefor rotating on a transverse axis above and between the ends of said second mentioned shaft and driven thereby at a point between the ends of the latter.

9. In a mining machine, a cutter'bar,`a motor, and motor driven feeding means includy ing a pair of shafts adapted to be driven by said motor or held stationary, clutch means for connecting said shafts to the motor, stationary means, said clutch means being also operative to connect said shafts to said stationary means, brake controlled transmission mechanisms operatively connected to said shafts, and feed operating membe connected to said transmission mechanisms and each adapted to cooperate directly with iiexible feeding means.

l0. In a mining` machine feeding mechanism, a motor, a pair of members operative on rotation in one direction to pull in and on rotation in the opposite direction to pay out flexible feeding means, flexible feeding means associated with said members, and means for controlling said members including two alined shafts, means for connecting said shafts to said motor or holding them stationary, members operative on rotation to rotate said first mentioned members, driving members carried by said shafts, and power transmission elements'between said driving members and said second mentioned members r0- tatable 0n axes offset from the axes of said shafts. y

ll. In a mining machine feeding mechanism, a motor, a pair of members operative on rotation in one direction to pull in and on rothe rear end of said shaft, and

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tation in the opposite direction to pay out flexible feeding means, flexible feeding` means associated with said members, and means for controlling said members including a pair of shafts, means for connecting said shafts to said motor or holding them stationary, members operative on rotation to rotate said first mentioned members, driving members carried by said shafts, and power transmission elements between said driving members and said second mentioned members, said power transmission elements being mounted on manually controllable rotatable members.

12. In a mining machine feeding mechan nism, a motor, a pair of members operative on rotation in one direction to pull in and on rotation in the opposite direction to pay out flexible feeding means, flexible feeding means associated with said members, and means for controlling said members including a pair of shafts, means for connecting said shafts to said motor or holding them stationary, members operative on rotation to rotate said first mentioned members, driving members carried by said shafts, and power transmission elements between said driving members and said second mentioned members, said power transmission elements being mounted on frictionally controllable rotatable members.

18. In a mining machine, a cutter bar by which cutting devices are carried, a ino-tor for actuating the cutting devices including a motor casing, and means for guiding the cutting devices including means carried directly by the exterior of said motor casing and guiding said chain along said casing.

14. In a mining machine, a cutter chain adapted to be circulated in an orbit, and means for actuating said cutter chain including a horizontally disposed motor disposed within and projecting below the orbit of said chain.

15. In a mining machine, a driving motor having a motor casing adapted to rest substantially on the mine bottom, and cutting mechanism driven by said motor including a cutter chain arranged and guided to be circulated about said casing.

16. In a mining machine, a cutter chain adapted to be circulated in an orbit, a drivingmotor for said cutter chain disposed within and extending below the orbit of said cutter chain, and feeding means driven by said motor including feed and takeup members and flexible feeding means cooperating with said members.

17. In a mining machine, a motor, the height of the machine being substantially determined by the height of the motor, a cutter chain extending` longitudinally of said motor and guided directly on the casing` thereof, and means driven by said motor for actuating said cutter chain.

18. In a mining machine, a machine frame.

a cutter chain, means for guiding said cutter chain on each end of said machine frame and about which the chain is adapted to be circulated in a norbit, and means for driving said chain including a motor disposed within and partially below the top plane of the orbit of said chain.

19. In a mining machine, a motor having its power shaft extending longitudinally of the machine, a shaft driven by said motor shaft parallel to the latter and below and to the rear thereof, cutting mechanism driving mechanism driven from the rear end of said shaft, and feeding mechanism including a driving element driven by said shaft forward of the rear thereof and rotatable on an axis above said shaft and a feed operating member driven by said driving element and adapted to cooperate directly with flexible feeding means.

20. In a mining machine, a machine frame, a motor carried thereby and having with respect to the length of the machine frame forward and rear ends, a cutter bar carrying cutting devices and projecting forwardly from said frame at the end of the latter near the forward end of the motor, and driving m chanisin for the cutting devices driven from the rear end of said motor and comprising a `sprocket rotatable in a horizontal plane between the vertical limits of said motor.

21. In a mining machine, a machine frame, a motor, the overall height of the machine being substantially determined by the height of the motor, a cutter bit carrying cutter bar projecting forwardly from said frame and having its uppermost and lowermost surfaces lying in planes intersecting said motor, said motor having forward and rear ends, the latter the more remote from the portion of said frame at which said cutter bar projects, and

'means for actuating the cutter bits including a sprocket driven by the rear end of said motor.

22. In a mining machine.r a machine frame, a motor. the overall height of the machine being substantially determined by the height of the motor, a cutter bit carrying cutter bar projecting forwardly from said frame and having its uppermost and lowermost surfaces lying in planes intersecting saidmotor, said motor having forward and rear ends, the latter the more remote from the portion of said frame at which said cutter bar projects. means for actuating the cutter bits including a sprocket driven by the rear end of said motor, and feeding means driven by the rear end feeding means, and means including a common operating element for each of said members for selectively effecting rotation of said members or resisting rotation thereof.

24. In a mining machine, a motor having its casing slidable directly on its bottom on the mine bottom, the height of Which substantially determines the height of the ma* chine, cutting mechanism including transmission means and a cutter chain driving sprocket driven by the rear end of said motor, and feeding means comprising a plurality of feed operating members each adapted to cooperate directly with flexible feeding means adapted to be driven from said cutting mechanism transmissionmeans.

25. In a mining machine, a motor having its casing slidab'le directly on its bottom on the mine bottom, the height of which substantially determines the height of the machine, cutting mechanism driven therehy comprising a cutter chain sprocket driven from the rear end of said motor, and feeding means for the machine disposed intermediate said motor and said sprocket and including a plurality of feed operating members each adapted to cooperate directly with flexible feeding means.

In testimony whereof I allix my signature.

LOUIS A. MAXSON.