US1710887A - Mining machine - Google Patents

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US1710887A
US1710887A US515321A US51532121A US1710887A US 1710887 A US1710887 A US 1710887A US 515321 A US515321 A US 515321A US 51532121 A US51532121 A US 51532121A US 1710887 A US1710887 A US 1710887A
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mine
coal
tools
dislodging
hammer
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US515321A
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Morgan Olive Eugenie
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
    • E21C31/02—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C27/00—Machines which completely free the mineral from the seam
    • E21C27/20—Mineral freed by means not involving slitting
    • E21C27/28—Mineral freed by means not involving slitting by percussive drills with breaking-down means, e.g. wedge-shaped tools
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0065—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices driven, or automatically, e.g. electrically-hydraulically controlled

Definitions

  • Figure l a plan View of my improved mining machine.
  • Fg. 2 is an eleraion'thereo'l partly 1n see tion.
  • Y l is an eleraion'thereo'l partly 1n see tion.
  • Fig'. 3 is a plan viewer an adaptation of my mining ina-Chine to are Wall operations.n
  • Fig. 'i is an elevational View oi' the machine shown inFig.
  • Fig'. 6 is a sectional elevation taken on ihe line G- of Fig. 5 looking inthe direction ol' the arrows.
  • Fig'. 7 Vis a Sectional elevation taken on the line 7-7 of Fig.A 5 ⁇ looking in the diluir-tion oi' the arrows.
  • Fig'. 8 is adetail View of part of the mecha nisni-iior adjustingr the elevation of vthe Lippen most and lowerinost dielodging tools.
  • Fig'. 9 is a sectional detail View of the mltiple valve for controllingr automatic-ally the operation of the pneumatic hammer dislodging niechanismi View, partly in sectionfoi' the pneumatic pumping mechanism shown in Figs. l and 2.
  • Fig. ll is an enlarged sectionall View of Fig. 9' on the line 'll-#lllooking inthe di- .'2-0 reet-ion oi' the arrows;
  • Fig. l2 an enlarged sectional View of F 9 on the line 12-12 looking in the direction oi' the arrows and shcm'ingl.r in addition an end n View of the Compressed air sto 'age tank.
  • Figs. l and 2 isshown hase ⁇ franie 13 adapted to rest on and slide over a mine floor along' an upright Inine Wall. Rigidly Connerled to the base frame 1'3 and extending upwardly therefrom is a supporting' frame 'll haring one wall 15 parallel to the mine Wall l? or in the loi'ig'iiindinal length o'i the niachine and 'hnring another Wall 1.6. atl right angles to such longitudinal len ein.
  • Thehar or rin 19 is adapied io oronpr a poeiiionini'erniediaie ihe floor and roei of ihe mine eh'nnher and is provided Fig.
  • 5 is :i sectional elevation of one of the at its uforward end 'a dislodgilig'ftool
  • the disloc'lging to ⁇ ilf26 ⁇ is connected to the arnl 24 as hereinafter described andeompriSe-s a digging and splitting pointQS 'and a Wall l trninner or scraper 29.l vIn'kmvise tfhed's-- llodging ⁇ tool 27 iseonneeted' to the arin ⁇ 25as hereinafter described and eomprises al digging ⁇ and splitting point B0 and a Wellftrinliner or Semper 31. il.
  • the uppermost and lowerniostyarrnei ⁇ and Q5 arepivotedat 32 end-'33 respectively" the npright Wall' 15 to perinit adjnstlnentii'n elevation ofA the dislodgin-g tools'fl and "2T
  • An' additional stendai'd'34 ⁇ onthe base ⁇ friirne 13 may be provided ⁇ so asfto 'supportfbarf ⁇ ings for shafts” keyed ⁇ tothe errns Qlnndf and journaledlinsueh'bearingsas Welln as hearings in 'theupright-Wall 15.
  • a Valve 54 controls the supply of the liquid pressure from the supply pipe 56.
  • supply pressure is exerted from the pipe 5G into the cylinder 47 and also through the passage 57 in the center of the piston rod 49 into the cylinder 50.
  • the exhaust pipe is shown at 58. lVhen the valve 54 is moved to the position shown in Fig. 2 the root jack will at once be anchored to form anabutment for tliehydraulic motor 46 to act against.
  • the hydraulic motor 46 has made a complete stroke the Valve handle 55 should he turned to the right as shown in Fig. 2y through an angle ot about ninety degrees, so as to connect the supply pipe 5G to the cylinder f7 to the right oi the piston 4S and so as to connect thespace to the left ot thev piston 4S to the exhaust pipe 58.
  • the roof jack will then be released and dragged to the lett to a new location where it can again he anchored to form an abutment for another forward dislodging operation ot thedislodging mechanism. 4
  • the construction shown is such that dislodging operations may he secured by operating the motor 46 described, to give the dislodging tools continuous forward paths of travel, said construction is also such that hammer blows may he effected on the tools Q0. 26 and 27 relatively to the arms 19, 24 and Q5 which carry them.
  • the ln'eierred hammer blow nlechanism is shown in Fig. 5 hut it should be understood that various other types oit hammer lolow mechanism may be used in the general conihimition, it desired.
  • a plunger 59 as shown in Fig.
  • This plunger tits in a cylinder (i and extemls into a somewhat larger cylinder elv along which is adapted to recilirocatc the hmnmer G2.
  • a buffer 68 At the right-hand end of the cylinder (i1 as shown in Fig. is a buffer 68 for cushioning the blow of the hammer l62 in its Vflight to the right and assisting to start it hack again in the opposite direction.
  • the pipe 64 conducts the compressed air into theeylinder 61 to the right of the hammer 62 and the pipe G5 and passageway 66 conduct the compressed air to the cylinder 61 to the left of the hammer G2, as viewed in Fig. 5.
  • the mechanism for automatically controh ling the operation of the pneumatic hammer to secure reciprocation et the hammer G2 at a predetermined rate is shown in Figs. 1, 2, 9, 19 11 and 12.
  • An electric motor G7 is mounted on a pedestal 68 secured to the hase :trame 13 and is connected by its motor shaft 7l to worms (i9 and i9.
  • the worm 139 meshes with the worm gear 72 pivoted at 73 to the pedestal 74, as .shown in Figs. 2 and 10.
  • a pitnian 75 is connected. between the worin gear T2 and lhc piston rod 76 ot an air pump comprising the cylinder 79 and a piston Ti' secured to said piston rod T6.
  • the motor 6T is opery ated to rotate the worm gear i2 the plmfip will be operated ⁇ to alternately torce air through the pipes 79 and 8O which are connected to the ends of the cylinder T8.
  • the piston mores down the check "valve SiA "fi valve S2 opens; air is drawn into the cji'linder below the piston from the atmosphere and forced out ot the cylinder above the piston into the pipe 79.
  • the pipes 7 9 and SO are eonnectedto lthe compressed air tank from which a pipe 8G leads to the Valve controllin mechanism 87.
  • Secured to the wall 15 are spaced-apart brackets 88 and 89 provided with circular openings 90 and 91 respectively for the ends ot the cylindrical valve chest 92 (Fig. 9).
  • Within the Valve chest is mounted a cylindrical multibook fvalre 98 provided with sevr-iral-yalve passages arranged for controlling the operation of the pneumatic hammers on the hars Q4, 19 and 25.
  • l'lia'ured to the lower end ot 'l he drum valve 93 is a shaft 9-1 which carries a gear 95 in mesh with a pinion 9G.
  • the electric motor (YT has ⁇ ifs motor shalt connected to a worm '98 which meshes with a worin wheel 99.
  • valve passages also communicate with lill! lili) ⁇ are operated or not.
  • Atjtlie sinne timetlie space to the le it of the lionnner 52 is; opened to exhaust through; the ⁇ pziesiige mty 6o, pipe G5, valve lmssogewziy 120 und piges 110 and 10T.
  • the eontrollin ineeli on'iein may be euch tlizit the middle i ielodgingtool f2() will loe onere ed ire1 f' n -limnj nier blow :und then the root il Aj ig tool; 26 operatedfollowed by the ⁇ floor d lgineig' tool E27.
  • Valve cont-rol mechanism muy also loe eneli that ell three disliidging 'tonie ore .etruok'repeated honnnerb'lo'ws abonnee inulnineoneiy.
  • valve 93 Connects the ⁇ supply pressure to the various pneumatic ⁇ :hammers iiririnltiple the letter in reality operate independently o't euch otherythkit'is to eey, eoolrpneuinotie hummer moy lie operated"whether the others It muy sometimes happen that one ofthe dislodging tools will split off o pieeeof oon-l while ilie @there are still "being ⁇ operated Ito dieiodgeenel. ⁇ I tl1ere/riore prefer to provide n slide vulve (Fir.
  • the tool rnovee ont #bevond the deeired distante the .lug 124 will eeel to renee the'i'ailie 1 to eloee oi the pipo@ ⁇ oi un (55. Si, limitv etant ILG nriin'ided to engage llie guide 12? on the evlini er G1 to limit the outirzird nieveu nient oiiltlr lueii lfhen the nnieliine is moved along the eozii faire to o. newpo Y' liv oliertition "ofthe vulve 431i.
  • the dislodgingj ⁇ tools are lpreeeeiil i ⁇ against the -Coasl' they are started .tlutoniati ⁇ -l et ily and 'initometiel-ly kept ⁇ in (nieriition to dislodge f the enel; vsuchautonnitio ojjieration oit' the dislodging 'tools ie ietectedfvry quiei ⁇ 1 y",'etiieientlyfand ivpowerfully.t
  • A're'af abutment moy be provided ifontrol nierlio'nisni.inay be ile ⁇ eliminiit 'the rigiit :intl eind oilWigLp 2. It twillitlruebe seen t l l -ivfhile tlre pneumatic hammers vere' operating the dislodging 'tools niuylhe :fedi-to' i their Work along anore'uate mine wullfan'd forward to e newipositionfzind: reoiioh red.
  • l). ln a mining ⁇ machine, the combination with a. supporting trame, ot a. pump mounted thereon, a pressure tank, a plurality ot dislmlging,Y tools, hammer blow mechanism 'tor operating' said dis-ledgingl tools, a multiple controlling valve connected to said haunner blow mechanism and to said pressure tanlz, and a motor for operatingl said pump and at the same time operating said valve to effect the operation and control ot said dislodging tools, n
  • a supplemental l'rinne comprising tool supports spaeed-apart in upright series and rigidly connected to from the face of the ⁇ n iinevein in large pieces said supportingframe, dislodgingYmecha tion to penetrate the .coul 1iup-its native bed and by Wedging aotionsplit andtearfthe eoal over a Wide area, fluid pressure apparatus ⁇ tor operatingisaid dislodgmg mechanism by nism mounted on said-tool supports inposi-l reciprocating .the saine 1relatively tosaidsupe j plemental trame, andfmeans 'for effecting feeding of said dislodging nieChaniSm. ⁇ 3l.
  • the combination with a supporting frame, of dislodging' mechanism mounted'thereon and comprising superposed penetrating Wecl,ggi'i1gtools-ail4 ranged for simultaneous autornatieoperation relatively to thesupporting frame to slice off a layer ofeofa'l from an upright ⁇ mine wall, automaticmeans for operating saididislodging mechanism@ yluy, projecting;l the J tools indiyidua'lly relatively toy the supporting framealong reetilinearJI lines Jvhile l Said sup- ⁇ porting frame remains stationary, and means t for positioning said supportingframefto adl just the dislodging meehanism to its Work atthe mine Wall to'secure automaticallyiin- ⁇ crements of dislodgnient olgeuehslied lajfeiu 33.
  • ot means for contin ing said frame toixuovement alongr aipredne- ⁇ termined path, dislodginh mechanismmounted on said frame. in fixedrelation therewith and to move loodilytherewith, saidy dislodging mechanism ,comprisingpenetrating mWedg ⁇ Y ing tools adapted to slice oithe lfaeeoii ⁇ the mine vvein and automatic ⁇ means for operat ing said dislodging mechanism including reciproeation of said tools andthe movement of saidjitrame along suoli predetermined path while said dislodging mechanism remains" in fixed relation to saidlframe.V :i
  • the method ot mining coa-l troni the solid ot a mine vein without blasting which consists in deeply penetrating the solid tace of the coal Vein at spaced-apart points along an upright series and by hammer-blow Wedging action producingl cleayages spaced back trom the coal :tace to dislodge the coal over an extended area and in large lumps with a minimum product-ion ot tine particles ot' coal. ⁇
  • the method which consists in distributing a plurality oi piercing wedging tools entirely across the working tace ot the mine Vein each adapted to penetrate deeply the coal in its native state and by wedging action split large pieces of coal trom the nnnlined mass, distributing trimming tools at the lloor and at the root ot the mine chamber, applying a eontina ously act-ing, pushing torce to all of said tools to position the saine along the mine wall and applying hammer-blow wedging actions to said tools to dislodge the coal in large pieces and trim olf the floor and the root' adjacent the spaces trom where the coal is dislodged.
  • the long Wall method of miningI coal which consists in dislodgiiig the coal from an upright face of a mine wall in a general horizontal direction along such face between the floor and the rootI of a mine chamber by hainmer-blow piercing and wedging andsplitting actions, and also by similar action dislodging the coal from such mine Wall along such face immediately above the door and immediately belenTA the ioo'l While trimming the roof and thc iloor to attain approximately horizontal surface.
  • the method which consists in applying a piercing and Wedging force by hammer-blow action lior ⁇ izontally back of the face of an upright mine Wall intermediate the floor and Vthe roof thereof to dislodge the intermediate section, applying at spaced-apart points above 'and below such intermediate sections, piercing and Wedging forces by hammer-blow actions back of theface of the mine wall to dislodge additional sections from such mine wall between such floor androof.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Description

April- 30, 1929. cfMoRGN A 1,710,887 l mima MACHINE' original Filed N0v.15...19,2'1- .-4. sneetvsned 1.
Y Pll 30 1929- I E C. MORGAN MINING MACHINE 4 Sheets-Sheet Original Fled Nov. 15. 1921 Apyil 30, 1929. l E. c. MORGAN IINING MACHINE Original Filed Ifpv. 15, 1921 4 Sheets-Sheet IIZVe/zzfnz? v 9. 7 6, m v am 9 C L/? .9 4M /AW/ .J t if J i April 30, 1929. MQRGAN i 1,710,887'
MINING rgAcHINE Original FledfNdv. 15. 1921 4 Sheets-Sheet. I
I nya-72107# r Fig'. 10 ie an enlarged Patented Apr. 30, 1929.
UNITED STATES nnM'eNn o. MORGAN,
mI'NiNG MACHINE."
Application :ned Novemberis, 1921, serial1%.515321.'`Ramarrinily.i"1,19f2fA Referring to the zieeol'npanying"d'awings:
Figure l a plan View of my improved mining machine.
Fg. 2 is an eleraion'thereo'l partly 1n see tion. Y l
Fig'. 3 is a plan viewer an adaptation of my mining ina-Chine to are Wall operations.n
Fig. 'i is an elevational View oi' the machine shown inFig.
dislodging tools. n
Fig'. 6 is a sectional elevation taken on ihe line G- of Fig. 5 looking inthe direction ol' the arrows.
Fig'. 7 Vis a Sectional elevation taken on the line 7-7 of Fig.A 5` looking in the diluir-tion oi' the arrows.
Fig'. 8 is adetail View of part of the mecha nisni-iior adjustingr the elevation of vthe Lippen most and lowerinost dielodging tools.
Fig'. 9 is a sectional detail View of the mltiple valve for controllingr automatic-ally the operation of the pneumatic hammer dislodging niechanismi View, partly in sectionfoi' the pneumatic pumping mechanism shown in Figs. l and 2.
Fig. ll is an enlarged sectionall View of Fig. 9' on the line 'll-#lllooking inthe di- .'2-0 reet-ion oi' the arrows; and
Fig. l2 an enlarged sectional View of F 9 on the line 12-12 looking in the direction oi' the arrows and shcm'ingl.r in addition an end n View of the Compressed air sto 'age tank.
In Figs. l and 2 isshown hase `franie 13 adapted to rest on and slide over a mine floor along' an upright Inine Wall. Rigidly Connerled to the base frame 1'3 and extending upwardly therefrom is a supporting' frame 'll haring one wall 15 parallel to the mine Wall l? or in the loi'ig'iiindinal length o'i the niachine and 'hnring another Wall 1.6. atl right angles to such longitudinal len ein.
Secured rigidly tot-he forward endoi'" the in'n'ig'ht Wall l5 alTshnped anxiliarylfraine 1S having' a` horizontal `elonn'ared barfi) of considerable strength extending angnlarly Jfrom the machine toward the mine Wall as ehown in Figi'. 2; Thehar or rin 19 is adapied io oronpr a poeiiiionini'erniediaie ihe floor and roei of ihe mine eh'nnher and is provided Fig. 5 is :i sectional elevation of one of the at its uforward end 'a dislodgilig'ftool The `l'atterfis connected to1 the bai' 19 ashereinafter described and eon'iprises `a;lointeil il'iggingland' splitting 'toollll' and 'upper and' Viewer scraping or' triniminglools 22 and y23.
Also extenffling forward anenlarly Vfrom the supporting framework lower arms 24a1id 25 lodgingtools `26"and 27.
The disloc'lging to `ilf26` is connected to the arnl 24 as hereinafter described andeompriSe-s a digging and splitting pointQS 'and a Wall l trninner or scraper 29.l vIn'kmvise tfhed's-- llodging `tool 27 iseonneeted' to the arin`25as hereinafter described and eomprises al digging `and splitting point B0 and a Wellftrinliner or Semper 31. il.
The uppermost and lowerniostyarrnei `and Q5 arepivotedat 32 end-'33 respectively" the npright Wall' 15 to perinit adjnstlnentii'n elevation ofA the dislodgin-g tools'fl and "2T An' additional stendai'd'34 `onthe base` friirne 13 may be provided `so asfto 'supportfbarf `ings for shafts" keyed` tothe errns Qlnndf and journaledlinsueh'bearingsas Welln as hearings in 'theupright-Wall 15.
"Keyed Ato the 'shaft` as shown in 2,
`Whieh "is mounted in ,bearings on af vertical TENT; r
0F uNEW YORK, N. Y.; OLIVE EUGnmn'MoneAie lnon:fonfrnxolg'' SAID EDMUND c. MORGAN. nEcnAsnn. .1.
are lie npper and provided Withfthe `dis is 'an arni 35 yWhieh hasesegrnental Worm gear 'axis onthe standard 38exte`nding npwardly l fi'olnthe rigi-d'arlil 19'` "referring toFig. 8 ii. will' be' seen `thatfthe n'ormj is keyed io a `verticalshaft 'liwhieh is joni'nalerl` in the bearings 39 and 4.0,ext`elndig liorino'ntally from the Standard 38." `The npii'er end ofthe i lowered to adjnst-the height of the dislodging tool 26. In a siinilarmanner the arInQQ may he lifted or loivered io adjiolstfthe` eler'af `tiener' `the`fdislod,gijilifg rtool Q7, bjvroperatingf."
' `the Worm gear.adjlistingIneehaniein 43 which is conneetediloithe rnr." f i PivotallyConnected fie 'slipporiing turn is rigidly7 eonneted to die `roof ijak comprising the ejfli'nder i'a'nd lthefnlnnger 5l. The Cylinder() is ".iroif'ided withyafshoe 52 for engaging the ioor and the plungerI 51 is provided with a shoe 53 for engaging the roof. Y
A Valve 54 controls the supply of the liquid pressure from the supply pipe 56. By turning the Valve 54 to the position shown in Fig. 2 by means of the handle 55, supply pressure is exerted from the pipe 5G into the cylinder 47 and also through the passage 57 in the center of the piston rod 49 into the cylinder 50. The exhaust pipe is shown at 58. lVhen the valve 54 is moved to the position shown in Fig. 2 the root jack will at once be anchored to form anabutment for tliehydraulic motor 46 to act against. As the hydraulic pressure is continued the frai'i'ieworlt together with the dislodging tools are moved i'ectilinearly along the inier wall to very powerfully act` on the coal to dig into and split the same from the mine Vein in one continuous forward movement.
Alfter the hydraulic motor 46 has made a complete stroke the Valve handle 55 should he turned to the right as shown in Fig. 2y through an angle ot about ninety degrees, so as to connect the supply pipe 5G to the cylinder f7 to the right oi the piston 4S and so as to connect thespace to the left ot thev piston 4S to the exhaust pipe 58. The roof jack will then be released and dragged to the lett to a new location where it can again he anchored to form an abutment for another forward dislodging operation ot thedislodging mechanism. 4
lllhile the construction shown is such that dislodging operations may he secured by operating the motor 46 described, to give the dislodging tools continuous forward paths of travel, said construction is also such that hammer blows may he effected on the tools Q0. 26 and 27 relatively to the arms 19, 24 and Q5 which carry them. The ln'eierred hammer blow nlechanism is shown in Fig. 5 hut it should be understood that various other types oit hammer lolow mechanism may be used in the general conihimition, it desired. Each o'l' the arms 21, 19 and 25 provided with an imlividual hammer device such as that shown in Fig.
ll-igidly connected to the disloiflging tool 26 and extending real wardly therefrom is a plunger 59 as shown in Fig. This plunger tits in a cylinder (i and extemls into a somewhat larger cylinder elv along which is adapted to recilirocatc the hmnmer G2. At the right-hand end of the cylinder (i1 as shown in Fig. is a buffer 68 for cushioning the blow of the hammer l62 in its Vflight to the right and assisting to start it hack again in the opposite direction. The pipe 64 conducts the compressed air into theeylinder 61 to the right of the hammer 62 and the pipe G5 and passageway 66 conduct the compressed air to the cylinder 61 to the left of the hammer G2, as viewed in Fig. 5.
The mechanism for automatically controh ling the operation of the pneumatic hammer to secure reciprocation et the hammer G2 at a predetermined rate, is shown in Figs. 1, 2, 9, 19 11 and 12. An electric motor G7 is mounted on a pedestal 68 secured to the hase :trame 13 and is connected by its motor shaft 7l to worms (i9 and i9. The worm 139 meshes with the worm gear 72 pivoted at 73 to the pedestal 74, as .shown in Figs. 2 and 10.
As shown in F ig. a pitnian 75 is connected. between the worin gear T2 and lhc piston rod 76 ot an air pump comprising the cylinder 79 and a piston Ti' secured to said piston rod T6. lVhcn the motor 6T is opery ated to rotate the worm gear i2 the plmfip will be operated `to alternately torce air through the pipes 79 and 8O which are connected to the ends of the cylinder T8. Then the piston mores down the check "valve SiA "fi valve S2 opens; air is drawn into the cji'linder below the piston from the atmosphere and forced out ot the cylinder above the piston into the pipe 79.
As shown in Fig. 2 the pipes 7 9 and SO are eonnectedto lthe compressed air tank from which a pipe 8G leads to the Valve controllin mechanism 87. Secured to the wall 15 are spaced-apart brackets 88 and 89 provided with circular openings 90 and 91 respectively for the ends ot the cylindrical valve chest 92 (Fig. 9). Within the Valve chest is mounted a cylindrical multiiile fvalre 98 provided with sevr-iral-yalve passages arranged for controlling the operation of the pneumatic hammers on the hars Q4, 19 and 25.
l'lia'ured to the lower end ot 'l he drum valve 93 is a shaft 9-1 which carries a gear 95 in mesh with a pinion 9G. The electric motor (YT has` ifs motor shalt connected to a worm '98 which meshes with a worin wheel 99. the
pas .res in the faire 99, On the frontside ci 1e valve chest 92 1s a vertical pipe 10i' which leads to the exhaust pipe 19S and is supplied with the branch pipes 199, 110, 111, 112, 113 and 114 which lead through the Valve chest to the valve passages.
The valve passages also communicate with lill! lili) `are operated or not.
the lateral pipes 61, 65, 115, 116, 11T und 11S which lood to the "pneunnitio lniimnersonthe lmrs Zit, 19 and Q5. Then the valve 93'is in Vthe position shown in Fig. 12 the pressure supply tank ie eonneeieed by ineens* of the pipes S6, 100 and 101 to the valve pas@ im' `119 u-ndthenoe to Afthe pipe 61 to 'dri e :the hammer 62 to the left usehown in lili-gr.' 3, to e bike u hammer blow zigzlinet the plunger :find thus forcibly driveihe dielodggjine1 tool i6 into the Cool of the mine vein. Atjtlie sinne timetlie space to the le it of the lionnner 52 is; opened to exhaust through; the `pziesiige mty 6o, pipe G5, valve lmssogewziy 120 und piges 110 and 10T. Upon o quurter turn of the volvo 93 in on antroloelwise direction the poesegrewnj; `121 williie eonneeteil between the pressure supply und the pipo (35 to tiene@ the herinner G2 toil`T to the right as viewed in Fil. 5 and then the pipe 64 will he connected to exhaust. Il? desired the eontrollin ineeli on'iein may be euch tlizit the middle i ielodgingtool f2() will loe onere ed ire1 f' n -limnj nier blow :und then the root il Aj ig tool; 26 operatedfollowed by the `floor d lgineig' tool E27. In t-liie niimner the coulon-oy fr t he looeened interiiiedizite the tlooiniul roof und then hroken'iiown -injore easily above and below. The Valve cont-rol mechanism muy also loe eneli that ell three disliidging 'tonie ore .etruok'repeated honnnerb'lo'ws abonnee inulnineoneiy. the valve 93 Connects the `supply pressure to the various pneumatic `:hammers iiririnltiple the letter in reality operate independently o't euch otherythkit'is to eey, eoolrpneuinotie hummer moy lie operated"whether the others It muy sometimes happen that one ofthe dislodging tools will split off o pieeeof oon-l while ilie @there are still "being` operated Ito dieiodgeenel.` I tl1ere/riore prefer to provide n slide vulve (Fir. o) orehutting .olf the 'porte ior the pipee` (Si :1nd (lo iflien `lie dieloi'hirifnn tool'nrovee out beyond n prodeteriniiiididistonee. A shown in Fi?. 5 the faire is eonnee'ted lig; o liar 123 to elogi 121 extending into :i longittulinzil ree-ees 125 in the tool 126. Then the tool rnovee ont #bevond the deeired distante the .lug 124 will eeel to renee the'i'ailie 1 to eloee oi the pipo@` oi un (55. Si, limitv etant ILG nriin'ided to engage llie guide 12? on the evlini er G1 to limit the outirzird nieveu nient oiiltlr lueii lfhen the nnieliine is moved along the eozii faire to o. newpo Y' liv oliertition "ofthe vulve 431i. f tooi 2o will ogzrin engage the coul at the mine wall whereupon the valve 122- Wll he uutornetieallv reeto'edo open position. 1t will thus loe eenthz'it mechanism provided for `automatically stopping the pneumatic hammer when ithas no work to do ondfor aiutonmtieally restarting the same as soonas It should be noted that while it `is Calledy upon to dislodge yeoiilQfrion jtheL :falce of the mine Wall.V i.
lf'tfh'enever the dislodgingj `tools are lpreeeeiil i `against the -Coasl' they are started .tlutoniati`-l et ily and 'initometiel-ly kept `in (nieriition to dislodge f the enel; vsuchautonnitio ojjieration oit' the dislodging 'tools ie ietectedfvry quiei\1 y",'etiieientlyfand ivpowerfully.t
"In Figs.' 3 und 4 I have 'Shown tlieimaehine of Figs. 1 `and 2 applied fio are Woll mining.
one `ai "radins rod orloar V13() and ueonnect ing rod 131 which sfbolt'edot' 132 tothe bar 1310 illterineditethefende of jiihieil'otiter.-V The i Therefore, V'when i the :letter *ie anchored fit eerves'os :i ulerunrffortlie nmehirie t- :fihout while in operotion'felong- "onfar'cuate `mine Wall''t. i
A're'af abutment moy be provided ifontrol nierlio'nisni.inay be ile `eliminiit 'the rigiit :intl eind oilWigLp 2. It twillitlruebe seen t l l -ivfhile tlre pneumatic hammers vere' operating the dislodging 'tools niuylhe :fedi-to' i their Work along anore'uate mine wullfan'd forward to e newipositionfzind: reoiioh red.
the i After "the V'1. in 'a -niinin'gnroeh `mythe Combination all* f roo with la lsli'pporti-ng ironie, of fan elongated:
s upplen'ientol frame pivoted lto seid ySuppcirb pneunnrtio dielodgingftool priavi'ded 4will i hammer blow ineehomsm fand lnounted' on sind euiipleinentol framefto' `inofve *bodily* therewith horizontally along un upright 'mine ,l l
will, means Comprising lwor' ihereonirrgforod-V 1:
@aune relative't" l r115` justi ng Isaid suppleinental seid supporting frame to v ry ttheelevzitionaid worin gearing ,y
oi seid dislodgi e; tool;4r
holding said supplemento-l frame' rigidlyeom neeted to sind Supporting fiunueiiniidplstetl" relative position, "and menne n1 'ng Said :trainee togetlierwitlr sind dislodglng tool bodily and horizontally yalong "ichiqiright tool.
extending in a* ygenei'zil "horizontal ydirection 2; In@ filming-menne, tiaeveenbinii with a 'supporting freine, of `a plrzilityof spaced-eportl elongated dislodging vtoolsfeachond euch adaptedto pen`etratre theloool "its blow mechanism, and means :for moving,l the main frame together With the supplemental frame and said dislodging tools bodily to effect feeding movement of the dislodging' tools and the step by step 1re-positioning thereot ter the dislodgment oi the material. over a Wide area ot the working `face in large pieces.
17'. In a longwall mining machine, the combination with a sul'iportinp,l trame, ot dislodging mechanism mounted thereon in position to penetrate coal in its native bed and by Wedgging,I action split and tear the coal from the tace ot the mine vein over an area extending` trom the floor Ato the rootl oif the mine chamber, fluid pressure hammer-blow mechanism for operatinp,` said dislodging,I mechanism relatively to said suppouting` trame, and means Alier movingT the supporting l'rame and dislodging` mechanism bodily alongI the Working,` tace rectilinearly to effect feeding,` ot the dislodgingl mechanism.
18. In a mining machine, the combination with a supporting frame, of a dislodp'ing' tool mounted thereon for bodily movement therewith and for an operatingl movement relatively thereto and adapted to penetrate coal from a mine Vein along` an upright .mine wall to dislodge such coal, fluid pressure hammer blow mechanism for operating` said dislodgingI tool by movement relatively to said supporting iframe while such tool engages the coal at the mine Wall, automatic mechanism for rendering inoperative said herinner-blow mechanism when said dislodging' tool moves outwardly beyond a predetermined position relative to said supporting' traine and for automatically rendering,` said hammer-blow mechanism operative when said tool again engages the mine wall, and means tor moving said supporting frame together with the dislodging` tool bodily along the mine wall in the direction of the mine vein and cit fct 'leeding;l ot the dislodging tool.
l). ln a mining` machine, the combination with a. supporting trame, ot a. pump mounted thereon, a pressure tank, a plurality ot dislmlging,Y tools, hammer blow mechanism 'tor operating' said dis-ledgingl tools, a multiple controlling valve connected to said haunner blow mechanism and to said pressure tanlz, and a motor for operatingl said pump and at the same time operating said valve to effect the operation and control ot said dislodging tools, n
20. ln a mining machine, the combination with a sulmortingI iframe, ot dislodg'ing; mechanism mounted thereon in fixed relation thereto and comprising mechanism tor penetrating` the coalin its native bed and by Wedging action split and tear the coal from the unmined mass, fluid pressure hammern blow mechanism for operating said dislot gine' mechanism, and means for 'teediirg` .said dislodgin,T mechanism rectilinearly along the coal rein to eil'ect di slodgment et the coal over an area extendingI from the floor to the root of the mine chamber while said dislodging mechanism remains in such fixed relation.
21. In a mining machine, the combination with a supporting iframe, o't dislodginpy tools mounted thereon and adapted to penetrate an upright mine wall at spaced apart points to tear material 'therefrom across the space between the floor and the roelE olf the mine chamber, powerful feeding; mechanism lor forcing said dislodging tools along the mine 'wall to tear the material therefrom as a toresaid, haImner-blow mechanism ior actuating said tools and an anchored pivot und conueel tions for directingl said dislodgismj tools along1 an arcuate mine wall. i
22. In a miningl machine, the combination with a root jack, oi a mining,y machine connected thereto to swing about said root acl; on an upright axis, an additional root iaclf adapted to act as an abutment, a motor `connected between said abutment and the mining machine to push the latter along,4 an arcuate mine wall, and means :lor opera ti ng said mining; machine during,l the arcuate feeding increment thcreoll effected by said motor. L
ln a mininp` machine, the combimition with a supporting trame, of a plurality ot spaced-apartpointed Wedging tools mounted on said traine in an upright series in position ii'or distribution across the mine rein, means for actuatingl said tools individually7 bv pro jectinp` them rectilinearly relatively te said supporting frame to cause the same to rip or tear the minerai adjacent the tools and brtueen the same` from the mine rein over au arca extending;l across the working lace, and means for moving the s i'npoitiin1 ;l iframe along` the working` tface step by step to new positions for the actuation oi said tools.
2l. lnv a miningy machine, the combinati n with a supporting iframe, ol dii-1h mechanism mounted thereon in if slice oil a layer ot coal from an upriuht iure of a mine Vein, automatic hanlnicrsblo-u' mechanism Ytor operating` said disloduiuriij mechanism While said 'traine rcmuinsistzitionary by projectin` such dislod Je' mecha nism in the direction et "rarel ol i machine, and means tor positioning said 'traine to ath` just the dislodf ging` meclumism 'ro its wor-lt at the mine vwall to secure increments ot such sliced layer along` the working tace.
In a minimoh n'lachine, the ctmibination with a portable flame, ot dislmlginu` mechanism mounted thereon to move bodilyY thercwith and comprising an upright series ot penetrating Wedgring tools adajitcd to eooperate to slice otl' the face ot the mine rein, means for confining` increment of said frame alone,r a. predetermined path, hammer-bleu' mechanism tor actilatino,l said tools, and
vmeans for moving said trame alongy the 'tace of the mine vein while said 'iframe is conlill] liti lined to sueh predetermined pathl to hold the dislodgijing mechanism to its Work. j j
QG. ln a mining` machine,V the combination with a ipporting iiainmof a" plurality of spacednjnlrt dislodgingl tools each adapted to penetrate the mineral in its native lied-and' by edging action split/and tear suohminf eral from the unmined mass, means :t'or
'mounting said dislodging tools in an upm'lit series on said 'frame in position to opeate on an upright Working tace ot' the mine veinj a plurality oit fluid pressure hammerhlm-v mechanisms one provided for each of said dislodfg'iug tools, and means for effect-ing leerling' movement `of the dislodging tools in 'the direction of the minevein. d i
El?. ln a minion' machine, the coijnbination with a supporting. frame, ot' a plurality oi spaoedapart dislodging tools eaeh Vadapted to penetrate the ooaloin its native liedand by wedg'ing action split and tear the eoalffr'rom the unmined mass, a plurality ot fluid pressure lunnn'ie1-blow mechanisms one provided l'or each ot' said dislodging tools to move .the latter relativelj1 to said supporting frame, ine-ans forA adjusting the elevation ot' the upperinost dislodgingtool, and means 'for .efl tingl feeding movement o t the dislodgmg i `tools iii the direction ot the mine vein to eli'eot dislodginent ol:` the coal from an upright iii-ine Wall over an area extendingl from the tloor to the roof oit the mine chamber.
ln a miningI niachine, the combination with, a supporting trame, olf a plurality of spaced-apart dislodging tools each adapted to penetrate the coal in l-tsnative hed and by Wedgingaetion split and tear the ooal from (lil 'the uninined mass over a` wide area, means tfor adjusting' the elevation ofthe lowerinost` tool, fluid pressure lian'uner-bloiv devices lolz the-respective dislodging tools, andmeans tor iup feeding movement oiithe dislodgtools along' the mine wall toeualole said diialodfrinp' tools to dislodge the coal over an area entoiiding' from the 'tloor to the root oil the mine eliainlier.
2i). lu a mining;r machine, the combination uitli a supporting ame, oit dislodging ineelianism mounted thereon and comprising upright multiple penetrating meehanisin in ilixed relation with said traine tor penetrat in the )al in its native bed and by Wedging notion split and tear the Coal trom the up rioh't Alince ot' the mine vein, fluid pressure htiiinneulilow mechanism for operating said dislodging; mechanism, and means for-feedn ino; said dislodgring mechanism along a mine vein in a ueneiial horizontal` direction `While id multiple, penetrating; mechanism re-` mains arrao'rgd uprghtly in iixedrelation to said suppor 4ne, traine. Y i
ill). ln a miningl machine, the combination with a supporting frame? of a supplemental l'rinne comprising tool supports spaeed-apart in upright series and rigidly connected to from the face of the `n iinevein in large pieces said supportingframe, dislodgingYmecha tion to penetrate the .coul 1iup-its native bed and by Wedging aotionsplit andtearfthe eoal over a Wide area, fluid pressure apparatus `tor operatingisaid dislodgmg mechanism by nism mounted on said-tool supports inposi-l reciprocating .the saine 1relatively tosaidsupe j plemental trame, andfmeans 'for effecting feeding of said dislodging nieChaniSm.` 3l. In a miningfinaehine, the ,combination withl `a supporting@from@ oli dislod ngi meehanisni mounted ujirightlyl thereonV in position to,penetrate the eoalin, its nativeibed over an l area enten;ling between the floorL and root' ofl they mine ohauilrerpand by- Wedging action split and tear theooalfronilthe faee of n the mine vein over an area extending from suchlloor tosueli roof, automatic fluid pressure hammer-blow meohanisln fori, operating said dislodgingmeohanism relatively ,to said supporting,r frame, and :means fora moving the? supportingframe and the dislodging mecha-- nismbodily in a gene al horizontal direction lodging mechanism and:positionl the latter for dislodging the coal fromthe oorto the Valong the mine vein 'toeli'eet feedot charlie-.90
roof in one operation in-agenelal liorizontalj direction along tllemine ve,in. v i
32. In a mining machine, the combination with a supporting frame, of dislodging' mechanism mounted'thereon and comprising superposed penetrating Wecl,ggi'i1gtools-ail4 ranged for simultaneous autornatieoperation relatively to thesupporting frame to slice off a layer ofeofa'l from an upright `mine wall, automaticmeans for operating saididislodging mechanism@ yluy, projecting;l the J tools indiyidua'lly relatively toy the supporting framealong reetilinearJI lines Jvhile l Said sup-` porting frame remains stationary, and means t for positioning said supportingframefto adl just the dislodging meehanism to its Work atthe mine Wall to'secure automaticallyiin-` crements of dislodgnient olgeuehslied lajfeiu 33. In a miningmachine,the combination with a portable frame; ot means :for contin ing said frame toixuovement alongr aipredne-` termined path, dislodginh mechanismmounted on said frame. in fixedrelation therewith and to move loodilytherewith, saidy dislodging mechanism ,comprisingpenetrating mWedg` Y ing tools adapted to slice oithe lfaeeoii` the mine vvein and automatic` means for operat ing said dislodging mechanism including reciproeation of said tools andthe movement of saidjitrame along suoli predetermined path while said dislodging mechanism remains" in fixed relation to saidlframe.V :i
34, In a systemot' mining eoal,4 a method .j
which consists inpiereingaesolidupright tace ot' a. coal vein. topenetrate thelsanie f deeply. and dislodge the `coal entirelyby .hanxmerdilmv Wedgiug action substantiallyfhaek i from the Vface at spaced-apart points inten j upright series and between the floor and the root ot the mine chamber to split the coal Vlrom the unlninednlass in large pieces over a wide area by such piercing and hannnerblow Wedging action at such spaced-apart points In a system oi miningl coal, a method which con 'st in simultz'ineously piercing the solid npr tace olvl a coal vein to penetrate the saine .t \ply and dislodge the coal entirely by hani1ner-bl0w Wet ging actions substantially back ifrom the tace at spaced-apart points in an upright series and between the floor and the roof ol a mine chamber to split the coal troni the Vnnmined mass in large pieces over a Wide area by such piercing and hammer-blow Wedging action at such spacedapart points.
36. In a system ot miningl coal7 a method oit mining coal lroin the solid ot' a mine vein, `which consists in distributing a plurality oit piercing Wedging tools across the upright tace ot a mine 'Vein and exerting hammerblo w forces on said tools continuously in the same direction to cause the saine to more along the niine Wall and exert concentrated intermittent pressure at the forward end th reet and by hammer-blow Wedging action split and tear the coal in large pieces adjacent to and between the same over a `iride area extending across the mine Vein and with a minimum production oit line particles ot coal.
37. In a system o't mining' coal, the method ot mining coa-l troni the solid ot a mine vein without blasting which consists in deeply penetrating the solid tace of the coal Vein at spaced-apart points along an upright series and by hammer-blow Wedging action producingl cleayages spaced back trom the coal :tace to dislodge the coal over an extended area and in large lumps with a minimum product-ion ot tine particles ot' coal.`
Sti. In a system ol" mining coal directly 'from a solid face oft a mine Vein. a method which consists in applying a plurality ot pointed wedging tools distributed in an upright series in spaced-apart relation across the entire working 'tace ot the mine Vein and exerting h:immer-blowv :forces on said tools alon paths each extending in a general horizontal direction along the mine Vein to cause them to penetrate deeply the solid `tace oit the coal vein and split the coal in large pieces 'trom such tace over an area extending entirely across the mine vein.
3f). In a system oit mining coal directly troni the solid tace of a mine vein, the method which consists in distributing in an `upright series the application of continuously tor- Ward and intermittently acting hammer-blow forces to deeply penetrate the coal 'face and by Wedging action tear away and slice ott' coal from such face over a Wide area to secure large pieces ont coal with tine particles reduced to a minimum.
40. In a system ot mining coal directly troni the solid :tace ot a mine vein, the method which consists in distributing pointed Wedging tools, one at the corner between the root and the upright Working tace and another at the corner between the iloor and the np- :t working 'tace and nnothta intermediate the .door and the root at 'the uinight working tace, associating trimming tools with said pointed n'edging tools7 and applying toi Wardly acting i'orces to each ol said tools in diridnally to cause the pointed Wedging tools to penetrate deeply the solid itat-e ot the mine vein and by nedging action split and tear the coal in large pieces adjacent the tools and between the saine over an area extending entirely across the working l'ace ol a mine vein while the tools associated with said pointed Wedging tools trim ott the projectiene.
lll. In a systein ot' mining coal directly trom a solid face ot a mine Vein, the method which consists in distributing a plurality of sharpened nedging tools entirely across' the worlr e; tace each tool being adapted to penetrate deeply the solid coal, and by Wedging action lsplit and tear large pieces ot1 coal troni the unmined mass with a minimum production oit tine particles of coal7 distributing trnnnfnng tools at the root and at the floor el' the mine chamber, applying hammer-blow torces to all ot said tools to canse the sharpened Wedging tools to dislodge the coal in large pieces over an area extending entirelyY across the mine rein and cause the other tools to trim the floor and the root adjacent the space from where the large pieces of coal are thus dislodged. I
42. In a system ot mining coal directly troni the solid tace ol a mine rein, the method Which consists in distributing a plurality oi piercing wedging tools entirely across the working tace ot the mine Vein each adapted to penetrate deeply the coal in its native state and by wedging action split large pieces of coal trom the nnnlined mass, distributing trimming tools at the lloor and at the root ot the mine chamber, applying a eontina ously act-ing, pushing torce to all of said tools to position the saine along the mine wall and applying hammer-blow wedging actions to said tools to dislodge the coal in large pieces and trim olf the floor and the root' adjacent the spaces trom where the coal is dislodged.
43. rllie long Wall method of mining coal which consists in applying continuously torward halnn'ier-blow pressure along the tace ot the mine Vein in a general horizontal direction on a splitting tool to dislodge the coal between the floor and the root ol the mine chamber and at the same time applying similar dislodging actions along such face above llt) llt]
and below the space provided by the dislodgment'ot the interniediate portion to dislodge the coal from the upright mine Wall near the floor and near the root'.
44. The long Wall method of miningI coal which consists in dislodgiiig the coal from an upright face of a mine wall in a general horizontal direction along such face between the floor and the rootI of a mine chamber by hainmer-blow piercing and wedging andsplitting actions, and also by similar action dislodging the coal from such mine Wall along such face immediately above the door and immediately belenTA the ioo'l While trimming the roof and thc iloor to attain approximately horizontal surface.
45. In a system ot' mining coal directly from the solid ot' a mine vein, the method Which consist-s in simultaneously piercing entirely by haiiinicrV-blow Wedging action the uninined vein of coal iii a niine substantially back from the face ot an upright mine wall at spaced-apart points in an upright series and between the floor and the root of the mine chamber to split large slices ot coal by suc-h piercing and hammer-blow Wedgiiig action at such spacedfapart points with a niinimum production of tine particles of coal.
46. In a system Vof mining coal, the method Which consists in applying a piercing and Wedging force by hammer-blow action lior`izontally back of the face of an upright mine Wall intermediate the floor and Vthe roof thereof to dislodge the intermediate section, applying at spaced-apart points above 'and below such intermediate sections, piercing and Wedging forces by hammer-blow actions back of theface of the mine wall to dislodge additional sections from such mine wall between such floor androof.
47. The method of mining coal directly from the solid face of a mine vein in a mine chamber, which consists in applying simultaneously a plurality of piercing and Wedging tools in spaced-apart relation across the entire Working face of the mine vein, and
exerting hammer-blow forces on saidtools in gene alhorizontal directions exten ding along t-lie face of the mine v`Yeni to cause said tools to penetrate deeply intol the solid face and split the coal` in large pieces with a minimum,
production ofiiiie particles by'wedging 'ac tion lto effect dislodgmentof the coal in Such large pieces `betweensaid tools and `over the entire area ofthe Workingi'ace between the'4 approximately horizontal flat floor andthe approximately horizontal flat rootfof theI mine chamber. l Y 48. The method of `Iiriining mineral y"from the solid which consists sin distributing ah plurality offl'iointed Wedging tools in an up l right sei-ies each for 'concentration of dislodging action, Vand exerting a continuous for- Ward horizontal rectilinear forcel onsaid` tools to position the same along tlieia'ceofl themine vein, and'exejrting intermittent haininer-blow actions-ori said tools tocause thel saine to slice off a large area of the mineral in large `pieces from the mine vein 'adjacent said toolsaiid between the saine `andthe/tweeni zov the flat tlooi'and the at roof of the; mine., chamber iiitlifaiiiiniinum production of fine particles otmineijal.4 f 1 from the ,solid-,face of p y v a' mine vvein in amine chamber, the method hich consistsin ap plying y penetrating and ,y hammer-blow acping away the native coal face oveifa Wide area Without blasting ap'plyingyp'erietrat-V l ing Wedging actions man uprightseries "dis-1;
tributed over such aceand coiitiniiinolsueh actions in the same,`diiect1on, and applying hammer-bloworces to secure deep penetrative coal inl largejpieces.
tion and Wedgingactions todislodgethena EDMUND o. "ist.onen-ia.`
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2579981A (en) * 1944-06-29 1951-12-25 Markham & Company Ltd Apparatus for effecting or controlling traverse of a body between opposed walls
DE941271C (en) * 1942-09-17 1956-04-05 Wilhelm Baecker Coal extraction scrapers
DE974199C (en) * 1948-09-01 1960-10-13 Dowty Equipment Ltd Longwall extension team
DE1158920B (en) * 1956-05-25 1963-12-12 Maschfab Eisengiesserei Beien Coal plane with adjustable sole knife
US3310346A (en) * 1963-06-19 1967-03-21 Gewerk Eisenhuette Westfalia Mining planer with adjustably positioned cutting means
US3386769A (en) * 1966-01-07 1968-06-04 White Pine Copper Co Rock-breaking apparatus
US3860290A (en) * 1972-08-12 1975-01-14 Dobson Park Ind Mining, rock breaking, excavating machine and implement
US4025116A (en) * 1975-08-14 1977-05-24 The United States Of America As Represented By The Secretary Of The Interior Method of operating a constant depth linear cutting head on a retrofitted continuous mining machine
FR2439292A2 (en) * 1978-07-22 1980-05-16 Gutehoffnungshuette Sterkrade HYDROMECHANICAL FELLING MACHINE WITH CUTTING AND GRINDING HEADS

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE941271C (en) * 1942-09-17 1956-04-05 Wilhelm Baecker Coal extraction scrapers
US2579981A (en) * 1944-06-29 1951-12-25 Markham & Company Ltd Apparatus for effecting or controlling traverse of a body between opposed walls
DE974199C (en) * 1948-09-01 1960-10-13 Dowty Equipment Ltd Longwall extension team
DE1158920B (en) * 1956-05-25 1963-12-12 Maschfab Eisengiesserei Beien Coal plane with adjustable sole knife
US3310346A (en) * 1963-06-19 1967-03-21 Gewerk Eisenhuette Westfalia Mining planer with adjustably positioned cutting means
US3386769A (en) * 1966-01-07 1968-06-04 White Pine Copper Co Rock-breaking apparatus
US3860290A (en) * 1972-08-12 1975-01-14 Dobson Park Ind Mining, rock breaking, excavating machine and implement
US4025116A (en) * 1975-08-14 1977-05-24 The United States Of America As Represented By The Secretary Of The Interior Method of operating a constant depth linear cutting head on a retrofitted continuous mining machine
FR2439292A2 (en) * 1978-07-22 1980-05-16 Gutehoffnungshuette Sterkrade HYDROMECHANICAL FELLING MACHINE WITH CUTTING AND GRINDING HEADS
US4239290A (en) * 1978-07-22 1980-12-16 Gutehoffnungshutte Sterkrade Aktiengesellschaft Hydromechanical planer with cutting and breaking heads

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