US1267992A - Mining-machine. - Google Patents

Description

. DUNLOP. MINING MACHINE. APPLICATION FILED IULY2B. I9I3. RENEWED OCT. 25.1917.

Patented May 28, 1918.

Lamm

y2 SHEETS-SHEET I- J2 3l 31a 1N 14E/v ma A TTORNY.

R. R. DUNLOP. MINING MACHINE. APPLICATION FILED IULY28. 19H: RENEWIED OCT. Z5. I9I7. www@ lufcui'vd MayZS, 1918.

2 SHEETS-SHEET 2- A TTORN .@NWIII I A@ 0 rr sus ni i :eOnniaT n. DUNLOP, or COLUMBUS, omc, nssicrnon To THE JEFFREY ivinivulractuniue COMPANY, or conm/inns, omo, a CORPORATION.

'MINING-MACHINE Specication of Letters Patent.

Patented May 2d, wild.

Application led .l'uly 28, 1914, Serial No. 853,644. lll-enevvcd ctober 25, 1917. 'Serial No. 19,545.

and 'useful .improvements in Mining-Ma-l chines, of which the following is .a specificationpreference being had thereinto the .accompanying drawing. y

The present invention relates especially to mining machines of the class in whicli'eacli is provided with its own track wheels and is adapted to perform the cutting operations while supported on the said track wheels. A machine embodying my invem` tion is adapted to travel into a mine room along a central track and, after reaching a suitable position, is adapted to out aA semi circular kerl? into the coal Iatthe face of the room. y l

lt'is often ldesirable to use such a machineI undesirable, or where a longer face is required than can be made from the pivot point. In such-cases the cutting element must be fed into the coal by the bodily movement of the machine along the track, which, in such cases, is laid at a proper.distance from the coal face to secure tlie desired depth of cut. As the tractive eli'ort of the propelling wheels zis i-nsuiiicient-to accomplish such feeding, it has been customary to resort to anchors, fl'Xed in, or near,'the coal face, to which a feed cable is attached, the winding up of which draws the machine along the track to cutthe coal.

ln earliery machines of the class to` which this invention specifically relates a single feed cable was4 provided which was used optionally either to swing the cutter mecha anism with respect to the main frame or to move the whole ma :hin'e bodily. This construction caused much loss of time when it was necessary to shift the cable from4 one position to the other. And even when the cable was in position for feeding the machine bodily itco'uld, without adjustment, move it in one direction only. Ii' movement in the other direction was desired the cable had to be moved to another position.

One of the objects of this invention is to provide a means supplemental to and independent of the cable which controls the along the track. Another object is to provide means whereby the machine can be moved bodily along the track in either direction at the will of the operator and without' the shifting of cables, anchor pins or similar devices. Stated more specifically one of the objects of the invention is to provide a machine of this general class with a feeding mechanism adapted to engage a rack rail laid along thetrack. Other objects of the invention will be apparent from the following specification and claims.

The device by which attain these objects will be hereinafter fully set forth, reference being had to the accompanying drawings of Figure 1 is a Igieilleral plan view of the machines.

Fig. 2 is a side elevation of the machine illustrated in Fig. 1.

Fig. 3 is a fragmentaryplan view'of the several figures.

As illustratedfin the drawingshthismachine comprises a supporting truck,y adapted to travel over the tracks of the mine, upon sol which is mounted a coal cutting mechanism Mounted upon the truck platform are power devices by whichthe truck wheels may be having a horizontally projecting cutter arm j adapted to berotated about a vertical axis.`

rotated to propel the machine along the 'mine tracks from one working place to another, and by which is actuated my improved positive traction deviceby which .the machine is driven along the track to force the cutter arm again the coal to cut it.

The truck consists of a structural steel platform l having suitabley axle boxes in which are journaled the axles 2 and 3` to which are fixed the track Wheels 4 and 5 adapted to travel Over the rails 6 of the mine tracks. Attached to the truck platform f 1 are guide pedestals 7 which engage the-depending lugs 8 of the supporting ring 9.

lill

Mounted upon` the supporting ring- 9,

.' adapted to rotation about the vertical axis j thereof, is a main frame plate 10 of the coal cutting element, to which is attached the horizontally projecting cutter arm 1-1 which is of a type well known in the art. Suitable means for effecting the vertical adjustment of the supporting ring 9 are contained in' the. pedestals 7, but as they form no part of the present invention they need not be specifically described. Mounted on the frame plate 10 is a windingdrum 12 upon which may be Wound the feed cable 13, the outer end of which may be attached to projections of the supporting ring to cause the rotation of the coal cutter thereon. A suitable motor 14: is attached to the frame plate ,10 and is connected by suitable gearing to actuate the ries a sprocket wheel 20, connected thereto' coal cutter and the winding' drum.

Mounted ou the truck platform 1, atthe rear-of the mechanism above described, is a motor l5 connected by suitable worm gearing to the cross shaft 16 to drive it. The shaft 16 is supported in bearings 17, 18 and 19 attached to the truck platform, and carby a clutch' 21. The sprocket wheel 20 serves, through the chain 22 and sprocket Wheel 23, todi-ive the axle 2 and Wheels 4 to propel thefmachine from place to place. Mounted 'upon the shaft 16 and connected thereto by aclutch 2i is an eccentric 25 by which my improved positive traction devi'ce'is actuated, as will hereinafter appear.

Pivoted on'the extended. ends of the axle 2 are 'two arms.26.having at their rearward '.bears at its upper end'againstthe lug 36- caused to rotate in either direction/ by theoscillation of the rocker arm'.- Fiyd to the ends journal bearings 27 in which are supported the'transverse shaft 28.' Upon the shaft 28 is rotatably mounted la rocker arm 29 connected at its upper end to the eccentric rod 30 to be oscillated by the rotation of the eccentric 25. A ratchet wheel 31 is fixed to the shaft 28, adjacent the rocker arm 29, which is adapted to be engaged-by the doubledirection pawl 32 pivoted on the pin`33 of the rocker arm.. Pivotally connected tothe stem 34.- of the pay'vl 32 is a rod 35 which is slidable in an aperture of the .lug 36 -of the rockerarm, and which is surrounded by the eompressio'i'spring 37 which and at its lower end lagainst ,the `stem 34 to hold the pawl in Contact with the ratchet wheel.l lBy this arrangement. the ritt het Wheel 31, and With'it the shaft 28, aybe I shaft 28 to rotate Withv it, is 'a sprocket Wheel 38 adapted to engage the r c rail 39 attached to the cross ties 4() of he mine track. Asthe rack rail is secur vly' anchored to the cross ties vit isevident 'at the rota` tion of the ratchet ivheel 31 `jwill cause the truck,and with it the coal `Jutting mechanism. to move along the' tr ck, the rate of rotation of the shaft28 being suchas to give the desired rateof feed to the cutter arm.4

A- suitable mechanism is provided for preventing retrograde movement of the shaft 28 and the s rocket Wheel 38. One form of mechanism or this purpose is shown. It comprises a'ratchet wheel 3l on the end Of the shaft 28, and a reversible pavvl '34 mounted on one of the arms 26, and held in position by means of the rod 35a and the sprlng 37.

Vhen' transporting the machine from place to p lace about the mine', the sprocket ufheel 38 must be lifted so as to clear the track rails at switches and crossings. Means for lifting the shaft '28 and sprocket wheel.

plv-- oted o n the support 42 of the truck platform 38 are provided in the hand levers Lt1 1, and connected to the ar'ms 26 by links 43.

Guides 44 areprovided to conne the hand. levers against lateral oscillation, and in`l these guides are apertures -l into which may be thrust suitable pins to hold the'hand levers in eitherposition desired.

Then the machine is to Work on the long wall system the working place is prepared by the laying of the track G parallel with the coal face and at a suitable distance.

when the cutter arm has reached a right angle with they track, the line of the kerf willq resemble the dotted line 47 in Fig. l. When the machine is thuis fully sumped the truck will be propelled toward the left hand side of the Working face by the rack rail mechanism. After the entire face has been cut, the sprocket wheel 38 will bc lifted and the` machine proceed to the next place, pro- -I pelled by the traction of t-he wheels 4.'

When using this machine for driving entry the track 6 is laid on the center line of the entry, themack rail 39 secured in its place and the machine advanced with the cutterarm 11 rotated to the right till its end is in contact with the rib. The truck is then advanced by the rack rail mechanism until the desired depth of cut is effected as in Figo. The cutter arm is 'then rotated to the left' until its end reaches the line of the left'hand rib as illustrated in Fig. 7, the

machine is then backed out by means of the rack rail mechanism as shown .in Fig. 8.

' WhatI claim isz' f i 1 In a. System of coal V.mining apparatus 130 Leonesa zontal kerf in ka coal face while supported`l on a section of track extending longitudinallytoward said face, the combination of a track, a base frame, track wheels supliti ' base frame and movable laterally across the from the coal While cutting andiwhile the N arm is fixed relatively to the baseframe andai"y to be moved laterally 'while cutting, mechaporting the frame, anfelongated horizontally projecting cutter arm carried by the front thereof, endless' chainvcutter devices mounted to lmove in a horizontal path around the periphery of the cutter arm, the arm and cutter devices being adapted to be thrustibodily intoand withdrawn bodily nism carried'by the base frame adapted to engage a part of the track structure to posi-y tively feed the 'apparatus bodily toward and away from the coal face to thrust the cutter arm into and withdraw it from the coal as aforesaid, mechanism for swinging the cutter arm laterally, mechanism for driving the track' Wheels to transport the apparatus bodily over the track,-motor devices carried by the base frame, and means for causing the power/of the motor devices to actuate the said feedin swin invr and track-wheeldriving mechanisms. l2., 1n a system ofv coal mining. apparatus comprising a ground supported track and a portable mechanism adapted to be transported over and remain permanently upon said track and also adapted to cut a horizontal kerfgin a coal face while supported on a section of track extending longitudinally toward said face, the combination of a track, a base frame, track wheels-supporting the frame, an elongated horizontally projecting cutter arm carried by the base frame and movable laterally across the front t5 thereof, endless chain cutter devicesv mounted to move .in a horizontal path around the periphery of the cutter' arm the arm and cutter devices being adapzed ,to be thrust bodily .into and. withdrawn bodily from the coal while cutting and While the Yarm is fixed relatively to ythe base frame and to be moved laterally While cutting, mechanism carried by the base frame adapted to engage a part of the track structure to positively feed the apparatus bodily toward and away l from the coal face to' thrust the cutter arm into and withdraw it from the coal as aforesaid, mechanism for swinging the cutter arm laterally, motor devices carried by the basefjfframe, and. means for causing the power'of the motor devices to actuate the said feeding and swinging mechanisms.

3. In a system of coal mining apparatus comprising a ground supported track and a portable mechanism adapted to be transrlaterali into and withdrawn bodilyv from the coal while cutting and 'while the arm is fixed relatively to the base frame and to be moved while cutting, mechanism carried bythe ase frame adapted to engage a partV ofthe' track structure to positively feed the apparatus bodily toward and away from the coal face to thrust the cutter arm into and Y withdraw it from the -coal as aforesaid, mechanism for swinging the cutter arm laterally, mechanism for driving the track wheels to transport the apparatus bodily over the track, manual means carried by the base frame" for 'moving the aforesaid feeding mechanism intoand out of engagement with thecoperatingpart of the track, motor devices carried by the base frame, and manually controllable means for causing the power ofthe motor devices to actuate the said feeding, 'swinging ard 'track-wimpeldriving mechanisms.`

4. 111- a system of coalmining:apparatus comprising a ground supportedl track and aportable mechanism adapted to betransported over and remain permanently upon -said track and also adapted to cut a hori-` zontal kerf in a coal face while Supported on a section of trackextending longitudinally toward said face, the combination of a track, a base frame, track wheels supporting the frame, an elongated horizontally projecting cutter arm carried by the base frame and movable laterally across the front thereof, endless chain cutter devices mounted to move in a. horizontal pathu around the periphery of the cutter arm, the arm and cutter devices being adapted to be thrust bodily into and wit drawn. bodily from the coal while cutting knd while thc arm is fixed relatively to the base frame and to be moved laterally while cutting, mechanism carriedA by the base frame adapted to engage a part of the track structure to positively feed the apparatus bodily toward and away from the coal face to. thrust the cutter arm into and withdraw it. from the coal asv aforesaid, mechanism for swingaforesaid feeding mechanism into and out of engagement with the cooperating part of the track, motor'devices carried by the rbase frame, and manually controllable y ,mc'ansior causing the power of the motor ldevices to actuate the said feeding and swinging mechanisms.

l 5. In a system of coal mining apparatus ing the frame, an elongated horizontally. .projecting cutter arm carried by the base rame and movable laterally across the f frontthereof, endless chain cutter devices ymounted .-to move in a horizontal path around the periphery of the cutter'arm, the arm and cutter devices being adapted to be thrustV bodily into and `Withdrawn bodily y from the coal While cutting and while the arm is fixed relatively to thebase frame and to. be noved laterally while cutting, mechanism ,carried by the base .frame adapted to engage a part of the track structure to positively feed the apparatus bodily toward and away from the coal face gto thrust the cutter arm into and withdraw it from the coal as aforesaid, mechanism for swinging the cutter arm lateral-ly, motor devices cary ried bythe base frame, and manually controllablemeans for causing the power of the motor devices to actuate the said feeding andswinging mechanisms simulta-` neously and' independentlyl of each other, whereby the contour of the kerf can be controlled at will.

lcomprising a' ground supporte la portable mechanism adapted to be trans- 6. In a-system of coal mini 'apparatus track and ported over and remain permanently upon said track and also adapted to cut a horizontalkerf ina coal face while supported on a section of track extending longitudinally toward said face, the combination of a track, a base frame, track .Wheels supporting the frame an elongated horizontally projecting cutter arm carried by the base frame and movable laterally across the iront thereof, endless chain cutter devices mounted 'to movel in 4a horizontal path around the periphery of the cutter arm, the arm and cutter devices being adapted to 'be thrust bodily into` and withdrawn bodilyl from the foal while cutting and while the arm is fixed relatively to the base frame and to be moved-laterally while cutting, a racklike member secured stationarily external to the base fra'me, mechanism carried by the base frame adapted to engage theracklike member to positively feed the apparatus bodily towardland away from the coal face to thrust the cutter arm into and withdraw it from the coal as aforesaid, mechanisin for swingil'lg the cutter arm laterally, motor devices carried by the base frame', and means for causing the power of the motor devices to actuate the said feeding and swinging mechanisms.

ture, in presence of two witnesses.

ROBERT R. DUNLOP.

Witnesses: l

Anvm R. ANDERSON,

DUDLEY T. FISHEiz.

'70 In testimony whereof, I affix my signa-

Images