US1783443A - Mining and loading machine - Google Patents

Description

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Patented Dec. 2, 1930 nuire ASTATES PATENT OFFICE EDi'I'ND C. MORGAN, RICHMOND HILLNEW YORK; OLIVE IIIITC'IENIEV MORGAN EXECUTRIXy F SAID EDLI'UND C. MORGAN, DECEASED MINING ANDy LOADING MACHINE- y Application tied iiiay- 9,

My inventionrelates to combined mining and loading machines and also to mining` machines and loading machines considered separately, and one oic the objects of the invention is the provision of improvedA and` and y loading and operate to dislodge material therefrom; A further object ot the invention is the provision of improved conveyor mechanism combined wit-h dislodging. mechanismV whereby the strain on tlie va 1ions Vparts is Another object of the invention is the provision oi' various attachments to Vadapt the mining machine to different characters Vof material to be mined, as may be desired, and means tor securing in position such attachments on the same general trame work.

irturther object of the invention 'is the provision of hert-cutting mechanism movable in an arc Acombined with conveyor mechanism, the forward portion of which, remains in receiving position and is also movable iii an arc and continuously in connection with a hopper from which entends another conveyor for taking t ieinaterial to amine car.

More 'particularly it "ifs the vobject ofthe 'present inventionA to provide -a--mining machine of the core-cutting type Vwith means for actuating the same and also feeding th same slowly in one directionand yquickly iiiV the opposite direction,` y'thev core-cutting mechanism having straight upper and lower runs to cut a horizontal hert at the floor of `he mine and a horizontal lert at the' roof. of the mine; the core-cutting mechanism being pivoted for adjustment in vertical planes andthe actuating and feeding means Vtogether with the cutting mechanism being' vertically adjustable asa whole, the imam frame being provided with a ceiling' jack to hold the same firmly in position.' Following isi?.

serial No. 167,467.

in the plane ofthe lower run of the corecutting mechanism is a pivotedconveyor section arrangedV to be at or near the floor of the mine when the floor kerf is being cut so 'that material when dislodged will not transmit unduestrain to the main frame or parts of the mining apparatus. Connected to the same source of power which actuates the cutting mechanism is automatically operated hydraulic mechanism extending'into the kei-fs and operating intermittently to dislodge sections of the core, so that the material will be received-on the forwardconveyor and thence transmitted toward the rear into a hopper with'which it iscontinuously connected andV into which extendsanother conveyor for tak'- ing the material to a mine car. The frame work is soconstructed as to permit detach-V ment of the loop core-cutter and the substitution therefor of plane lrerf cutters operatively connected tothe source of power. Adjustable shelves are hinged back ofthe sections of conveyor frames which move in an arc with the cutting mechanism; such shelves are removable to permit the attachment of Van upright arcuate hert-cutter to cut a hert spaced back from the mine wall between the inner ends of the horizontal spaced apart hert-cutters, such upright kort-cutter having operating' connections extendinglback to the aforesaid source of power. Improved cutter chain and guiding mechanism is provided for such upright arcuate hert-cutter. Provision ismade ioi suitably supporting the hydraulic breaking `mechanism when the plane korf-cutters are attached, and adjusting mechanism isI provided for tilting the "plane hert-cutters independently of each other and without interfering with the transmission o power through mechanism which actuates the chain cutters of saidplane herfcutter both in the same direction. vProvisionis also made for adjusting the height of the upper plane hert-cutter without inter- Vtering with said power transmitting mechanism. When desired the upper plane herfcutterinay he omitted andthe lower kei-fcutter. use d alone. The ,plane kerf cutters `when attached arealso tiltable as a whole and the tiltable frame to which the cutters LTL Cil

are attached is provided with a pivotal connection with a frame of the forward conveyor section so as to lift and lower the latter, and on account of the pivotal connection of the rear end of the forward conv yor frame section being near the pivot of the frame carrying said cutters, the forward portion of the conveyor will remain appr z mately in horizontal alignment with the lower planeV kerf-cutter and also with` the lower run of the loop-cutter, when the latter is used. rEhe cutters are mounted to operate approximately on the radius extending from the center of arcuate movement of the frame carrying the cutters. rllhe conveyor follows behind the cutter and operates along a line to one side of such center of arcuate movement and directly back thereof 1when the cutters are in the midposition. A platform spans the space between the lower run of the cutter and the forward portion of the conveyor. The attachments permit the use of the core-cutter of the loop-type together with a hydraulic mechanism and the conveyor mechanism having the adjustable shelves; or, a lower plane kerf-cntter with the parts mentioned; or, spaced apart plane kerfcutters with the said parts or, the lower plane kerf-cutter or both of said plane korf-cutters together with the arcuate upright'kerfcutter, the adjustable shelves then being omitted; or, the loop cutter and both ofthe plane kerf cutters as well the shelves may be omitted and the upright arcuate kerf-cutters used alone; or, the loop core-cutter may be used in combination with the lower plane korf-cutter or both the lower and the upper plane kerf-cutters.

Other objects of the invention will appear hereinafter, the novel combinations and features of the invention being` set forth in the appended claims. V

ln the accompanying drawings- FiO. 1 represents a plan view of the. assembled machine including a loop core cutA ter, a hydraulic breaker and conveyor mechanism and pivoted shelves;

Fig. 2 is a side elevation of Fig. 1;

Fig. 3 is a plan view of the central portion of the mining and loading machine with certain parts of the actuating and feeding meehanism for the cutters shown in horizontal section;

Fig. Ll is a sectional elevation of Fig. 3 taken on the line Li--Ll of Fig. 3;

Fig. 5 is an enlarged elevation of the loop core-cutter showing the upper and lower straight runs and the hydraulic breaking mechanism applied thereto;

Fig. G is a plan view of an enlarged forward portion of the assembled machine showing in plan the connection of the hydraulic breaking` mechanism with the cutter, and the pivotal connection of the forward conveyor section with the cutter frame and with the rear conveyor section and with the shelves;

Fig. 7 is a sectional view taken on the line 7-7 of Fig, 6;

Fig. 8 is a sectional elevation on the line S--Sof Fig. 4l looking in the direction of the arrows with the mechanism for operating the hydraulic breaking mechanism on'iitted;

Fig. 9 is a sectional View en the line 9-9 ,of;Fig. 6 looking in ,the direction of the arrows;

Fig. 10 is a side sectional elevational view through the forward conveyor and a portion of the loading conveyor together with a portion of the receiving hopper;

Fig. 11 is a side elevational view of the rear conveyor7 the hopper being shown in central sectional elevation;

Fig. 12 is an enlarged plan view of the hydraulic breaker mounted on the cutter frame;

Fig. 13 is a sectional elevation taken on the line 13-13 of Fig. 12;

Fig. 14 is a sectional elevation taken on the line 14k-14 of Fig'. 12 looking in the direction of the arrows;

Fig. 15 is an elevational view of the right hand end of Fig. 12;

Fig. 16 is a sectional elevation of the interior construction of the hydraulic pump ing mechanism and the mechanism cooperating with the hydraulic breaking device` shown in Fig. 12;

Fig. 17 is a diagrammatic illustration showing the position of the parts of Fi g. 14E when the accumulator is out of operation and the hydraulic breaker being operated directly from the pumping mechanism:

Fig. 18 represents another position in the cycle of operations by means; of the mechanism shown in Fig. 17

Fig. 19 represents a modification by including a dilierent cam to elect cooperation with an accumulato-r, the view illustrating the transmission of a hydraulic impulse to the breaker to operate the same;

Fig. 20 represents another position of the part shown in 19 when the water or other liquid or fluid is released from the breaker.

Fig. 21 is a plan view of the attachment permitting the use of spaced apart plane kerf cutters, the position of the loop cutter frame being shown in dotted lines;

Fig. 22 is a side elevation of the rear portion of the attachment sho-wn in FiO. 21, together with the adjusting mechanism for the cutters;

Fig. 23 is a sectional View on the line 23-23 of Fig. 21 looking in the direction of the arrows;

Fig. 24: represents diagrammatically a swivel connection and an expansible joint in the hydraulic pipe to permit freedom of adjustments of the plane kerf-cutters;

Fig. 25 is a longitudinal sectional elevational'viewtalen on line 25--25 of F ig. 2l;

. Fig. 26.is asectional plan vienv of a porey tion ofthe inechanisni shown in ligs-j2 ancl 25 Fig. 27 is a vertical sectional View `of Fig. 22 taken on the line 27-27 looking in the directionof the arrows; f Fig. 28 is a plan'vieW of a detail of 25, constituting means for adjustably guiding the upper plane lrerf-,cntterg Y Fig. 29 is an elevational vien7 of Fig. 28; F ig. 30 is a plan vien7 of thenpper plane ker-flcutter v F 31 is a sectional elevation on the line 31-31 of Fig. 30; y

ll"ig isa sectional view on the line 3.2-32 of Fig. 30; Y

Fig. 33 is an elevation of the 'cutter chain construction shown in 32; Y

i F ig. 34 is Aa plan View of' the upright arcuate lrerffcntter and the attaclnnents for connecting the same and the operating mechanism thereof tothe forwardportion of the conveyor; 'l Y i Fig. 35 is an elevational View of an enlargement of a portion of the attachment.

for supporting Ythe upright arcuate cutter and the outer portion ofthe operating mechanisin to the conveyor fr g v Fig. 36 is asectional elevation of part of Fig. 8 to shoWthe details of the mechanism for adjusting the elevation of .the corecutterg. 4 p v Fig. 37 is a sectional elevation of structure sliovvn in Fig. 24;v Y 1 .r Y

Fig. 38 isla plan view ofthe combined mining and loading machine including spaced-apart plane' kerfcnttersandan upv right curved *korf-catteryV Fig. 39 is an elevation of the structure shown in Fig. 38;

Y 40 is a plan 'ViewA of the combined and loading inachme comprising.

mining spaced-apart plane korf-cutters loop chain kerfcutter with its upper and loWe rnns approximately in the planes of said plane lerf-cntters'gand `V Fig. 4lis an elevational view of the structure shown in lFig-40.V Y

Referring to Fig. 4 it will be seen that the central portion Vof! the vcircular base plate ormain frame 36 is' provided With an up.- right cylinder or sleeve 37 rigidly connected to orintegral vWith the base plate v the vertical hollow cylindricall recess in Y Y sleeve 37 is splined the screw-threaded vpost 38 by means*Y of the spline 39 fastened to either thesleevef'? orthe post 38 so as to permit free vertical motion ofthe post 38 but preventing turning thereof. Gnthe upperend of the post 38 is mounted a ceiling foot 40 having;- a-plnrality of radiating claws Between theupper end of the standard SY/and thefoot 40 is mounted a vr el 42 havinga screwthreaded hnb 43 in mesh with the screwthreaded'.post.38, whereby when the Wheel is rturned the post'together with the ceiling lclaws may "be lifted or lowered.. There is `therefore provision made for a ceil-` lotarily mounted 4on the upright cylin drical sleeve 3'! isa rotary iframe 44 a's'shownY in Figs. 3 and 4. The frame 44 isV provided Vwith laterally extending platelsfll and 46, as shown in Figi 3. The plate 45 is providedwvitha vertical slot 47 and the plate 46'is provided with a vertical slot 48 as shown in 4. Extending through the slots 4'? and `4c arebolts 49 and 5G, re'- spectively, to effect rigid connection betweenk the motor frame 5l and the rotary fran'ie 44.- The motor frame 5l is guided verticallyonthe frame 44 by means of the dovetail The motor carried by the `frame 5l is preferably an electric motor provided With Welllrnonin electricsvvitches for starting, stopping and reversing the'same. The armature 53 of the electricmotor is carried by a shaft 54 mounted in suitable bearings andcarrying at one end the bevel gear Which meshes with a-.larger bevel gear 56 mounted on the transverse-'shaft 57.' Gne end of the shaft 57 isjournaled in the bearing 58 car ried by the bracket frame 59 which is rigidlyconnected to the motor frame and enr-,loses the bevel gears and56. rlhe othen end of the shaft 57 is jonrnaled inthe bearing 60 carried by a bracket 6l which also rigidly connected tothe motor 'frarnefL It Will therefore be seen that when themotor frame is `moved up or downA and fastened. in adjusted position by means ofthe bolts 49 and 50, the' gears A55 and 56 Ytogether with thev shaft 57 andl the `bearings thereof will alsobe adjusted as to elevation.

Also rigidly connected tothe motor frame 5l is an additional bracket 62 having a cylin-V drical lateral extension 68 to` form a bearing each-other and yconcentric With the shaft 57.Y At the outer end of the shaft 57 is mounted a sprocket Wheel @Q for driving a chaincutf ter 70 as shown 1n Fig. 4. i A

Rigidly connected'with the main rotary guide connection shown at 52 inl frame 44 is a radial arm 71 which is provided with a shoe 72 resting and sliding on the circular track 73 of the base plate 36. rlheV arm 71 is provided with an upwardly and outwardly extending portion 74 at the outer end of which is pivoted the screw-threaded rod 75 as shown in Fig. 8. A pivotal connection at 76 to the outer end of the arm 74 affords means for permitting the vertical rod 75 to swing to or from the axis of oscillation of the cutter carrying frame 66. Mounted on the screw-threaded rod 75 is a nut 77 provided with a wheel 78 to turn the same. At the lower end of the rod 75 just above the pivot 76 is a washer 79 on which rests a spiral spring 80 concentric with the rod 75 but below the frame 66. It will be seen by referring to Figs. 3 and 8 that the nut 77 and wheel 78 are located above the frame 66 or that portion thereof which constitutes the crosspiece between the collar-bearing brackets 65 and 67. The spring 80 is located below such crosspiece and bears against the washers 79 and 81, the upper washer being located in such position that it does not interfere with free rotation of the nut 77 This is accomplished by having the washer rest against the under side of the frame 66 out of Contact, or nearly so, with the lower end of the nut 77. It should be understood that the nut 77 extends through an opening 82 in the frame 66 and is provided with collars 83 and 84, respectively, above and below the frame 66 and fixed to said nut 77 to rot-ate therewith while locking the nut 77 to the frame 66. The opening 82 however, is suficient to permit free play of the nut 77 therein when the frame 66 is moved up or down and the rod 75 is moved on its pivot 76 by such adjustment.

llfhe cutter head 85 comprising upper and lower chain cutter guide frames 86 and 87 is detachably connected to the vertical plate 88 by means of the bolts 89. rlhe vertical plate 88 is integral with or rigidly attached to the frame 66, as shown in Fig. 8. As shown in Fig. 5 the upper flat chain cutter frame 86 converges relatively to the chain cutter frame 87 below and the outer ends are connected by the vertical run 90, the upper and lower ends of which are curved to afford suitable guide for the chain cutter 70. The rear portion of the upper and lower chain cutter guides 86 and 87 are provided with extensions 86 and 87 respectively. It should be understood that when the nut 77 is in the position shown in 4 and 8 the loop corecutter frame, having the unobstructed core opening therethrough, as shown in Fig. 5, the lower chain cutter guide frame 87 occupies a horizontal position so that it can cut a horizontal plane curve at the lioor of the mine chamber. Now when the wheel 78 is turned by the operator in the proper direction the entire loop chain core cutter may be lifted and pivotally and bodily adjusted to any desired upper position, the spring 80 acting as a counterbalance to facilitate such lifting because the spring rests on the outer end of the arm 74 which in turn rests firmly on the base plate 36. The uppermost position will usually be where the upper cutter frame 86 occupies a horizontal position to cut a plane lierf at the roof of the mine chamber. It should be understood, however, that the chain cutter frame may be adjusted to aI higher position so that the upper outer portion of the chain cutter may be used for cutting material from a roof at a higher elevation whenever desired.

I will now describe the mechanism for effecting a slow forward feed of the cutting mechanism during the actuation thereof. Mounted on the central portion of the shaft 57 are two multiple disc clutches 91 and 92, each of which comprises discs which are connected to the shaft 57 and the outer shell in a well-known manner. Between the multiple discs is located an operating device 93 which may be moved to throw in either the clutch 91 or 92 and left in engaging position by the operator until thrown out again. Connected to the hub of the clutch 91 is a pinion 94 which meshes with a large gear 95 mounted on the winding drum 96. The hub of the clutch 92 is provided with a pinion 97 meshing with a large gear 98 mounted on the winding drum 99. Both of the drums 96 and 99 are mounted loosely on the bearing shaft 100 supported at its ends in the brackets 101 and 67 It should be understood that the drum 96 is secured to and rotates with the gear 95 and that the drum 99 is secured to and rotates with the gear 98, but that the drums 96 and 99 are independently rotatable on the bearing shaft 100.

One end of a cable 102 is connected to the drum 96 while the other end thereof is adapted to be hooked, as by means of a ring 103 to a cleat 104 of which there may be several circumferentially spaced apartaroundtheperipheral portion of the circular base plate 36. The rope 102 extends around a guide pulley 105 pivoted on the frame 66 near the drum 96. Whenever the clutch 91 is thrown in and the motor operated in the proper direction the drum 96 will be rotated to exert a pull on the cable or rope 102 to turn the frame 44 together with the motor frame and the cutter carrying frame to secure feeding movement of the cutting mechanism. 1While l prefer to proyidepanchoring points on the circumferential portion of the stationary base plate 36, it should be understood that the cable 102 may be anchored in the mine at any suitable point.

Connected to and wound on the drum 99 is a cable 106 which is guided over the pulley 107 pivoted to the frame 66. The free end of the cable 106 is passed around the circumferential portion of thebase plate 36 and may also be guided by spaced apart cleats and anchored to one of them. The diameter of the drum 99 is preferably made larger than the diameter of the drum 96 so as to secure a quicker movement of the cutting mechanism in reversed direction back to initial position. rlhe free end of the cable 106 instead of being anchored to the base plate may be connected to any suitable anchorage in the mine chamber.

It should also be noted that by means of the rope winding drums 96 and 99 and the ropes connected thereto, the entire mining and loading machine may be moved about in the mine chamber when the ceiling jack is released and lowered. This is preferably accomplished by anchoring the free ends of the ropes at suitable positions in the mine and operating the drums 96 and 99 alternately to effect swinging and bodily movements of the enti re machine to a new location. The mining machine may thus be moved by power mechanism in any desired direction over the mine floor. i/ilhen the drums 96 and 99 eX- er't such pulls on the ropes connected thereto the frame 66, although pivoted at 63 and 60, will not be tilted either upwardly or downwardly because prevented from doing so by c thenut 77 on the screw-threaded rod 75 pivoted at 7 6 to the outer end of an extension from the rotary frame 44, as shown in Fig. 4.

I will now describe the hydraulic breaking mechanism which I consider an important .11. feature of my invention. Integral with or rigidly attached to the rotary frame 44 is a lateral extending verticalplate to which is detachably connected the bracketl 109 as shown in 6. The bracket 109, as shown in Fig. *3 carries two vert-ical spaced apart bearings 110 and 111 through which eX- tends the vertical shaft 112 and between which are mormted the oppositely faced bevel `gears 113 and 114. Also carried by the bracket 109 is a. horizontal bearing 115 through which extends a shaft 116 carrying a bevel gear 117 at one end in mesh with the gear bevel 113 and having a universal joint/connection 118 to a sleeve 119 at its other end. Extending into the sleeve 119 is a rod 120 having a sliding connection therewith but being compelled to rotate with the sleeve 119. The lowerlend of the rod 120 is connected by the universal joint 121 to the shaft 122 connected' to cranks 123 and 124 for'operating the pump shown in Fig. 16 in detail, and mere or less diagrammatically at 125 in Fig. 5. rlhe pump mechanism shown in Fig. 16 may be supported on the vertical crosspiece of the cutterhead.

fit the outer end of the shaft 57', shown in Fig. 3, is mounted a bevel gear 126 which meshes with the bevel gear 114 as shown in Fig. 5. The bevel gears 113 and 114 are "l splined to the vertical shaft 112 so as to be compelled to move rotarily therewith although slidable vertically thereon. Although the bracket 109 may be connected to the vertical plate 108 as hereinbefore stated. I prefer to detachably bolt said bracket to the frame 61 as to be movable up and down therewith when the motor freune is adjusted along the slots 47 and 48. lVhen such adjustmentis made the bracket 109 together with the bevel gears 113 and 114 and the gear 126 are moved relatively to the vertical shaft 112. The lower end of the yvertical shaft 112 is pivoted at 127 to a horizontal plate 128 which is secured by means of the vertical plate 129 to the bracket plate 108 extending from the rotary frame 44 as shown in Fig. 6. It will be seen that the plates 128 and `129 are fixed to the rotary frame 44 and will not interfere with the movement of the bracket 109 which is shown in its lowermost position in accordance with the adjustment along the slots'47 and 48 in Fig. 4.

Extending from the pumping mechanism 125 is a pipe 130 leading to the hydraulic breaking devices 131, 132 and 133. The breaking device or devices may be located in the upper lower or end kerf or in any two or more of them. If desired, the breaking devices may be arranged in series, but inasmuch as each breaking device would be similar in construction, I will describe only one of them. Referring to Fig. 12, which shows a plan view ofone of the preferred breaking devices, I have shown a rearwardly eX- tending rod 134 secured to the rear end of the cutter frame 86 s o as to occupy a position in the plane thereof. Pivotally connected at 135'and 136 is a flat frame `137 provided with a circular recess 138 in which fits a piston 139 of a diameter muchlarger than its thickness. Secured to the inner flat surface of the piston 139 by means of screws 140 is a circular metal plate 141 for holding in place a packing ring 142 at the peripheral circumferential edge of said plate 141 and against the inner cylindrical surface 138. Secured to the outer flat surface of the piston 139 by means of screws 143 is a fiat circular plate 144 of a larger diameter than the piston 139 and preferably of a diameter equal to the width of the piston casing 137. The outer end of the pipe 130 is securely connected bymeans of the plate 145 to the piston casing 137 so that the opening in the pipe will register with the passage 146 which leads through one'side of the frame 137 into the space between the piston and the bottom of the cylindrical recess in the piston plate or casing.

It should be noted that the rear end of the rod 134 is screw-threaded at 351, as shown in Fig. 12, to receive the nut 352 for adjustment of the tension of the spring 353 which has the function of automatically sliding the breaking device along the rod 134 after each to pump operation thereof, to its initial position relatively to the ker-cutter frame 86. During the interval of operation of the breaking device the latter is arrested in its forward motion but on account of said returning spring the forward feed of the ker-cutter is not interfered with.

At diagonally opposite corners oi the piston easing 137 are recesses 147 for containing bolts 148 associated with springs 149, the bolt being so connected to radially extending ears 150 of the plate 144 as to cause said springs to be compressed when the piston is moved by hydraulic pressure within the casing 137. The springs 149 are relied upon to reset the piston to initial position when the hydraulic pressure is released. I prefer to use hydraulic pressure through the medium of any desired liquid but it should be understood that in some instances pneumatic pressure may be used if desired. When the hydraulic or pneumatic breaking device is used in a plane kerf the parts may be constructed as shown in Figs. 12, 18 and 14, but when used in an upright arcuate kerf in the position shown at 182 in Fig. 5, the parts may be curved to coliform to the curvature of the kerf. The construction for an upright arcuate kerf is illustrated in Fig. 15.

In Fig. 16 I have illustrated the preferred form of pumping apparatus shown at in Fig. 5 mounted on the vertical frame 85. Although I have shown the framework 151 of the pump as composed of a single casting, it should be understood that such illustration is for the sake of clearness and those skilled in the art may make the frame ot any desired number or' parts and provide such changes as to arrangement of parts, vents and additions as may be desired. The cranks 128 and 124 are connected to pistons alternately operated by the pitmen 152 and 153, the pistons being designated 154 and 155 respectively. The piston 155 acts water from the reservoir 156 through the valve 157 and the check valve 158 and force it past the check valve 159 through the passageway 16() and through the valve 161, when the latter is open, into the passageway 162 and thence into the pipe 130. The valve 161 when in the position shown in Fig. 16 opens the pipe 130 through the passageway 168 to the reservoir 156. It should be understood that the piston 155 is the piston of the hydraulic pump to pump water into the pipe 180 and thence into the hydraulic breaking device shown in Figs. 12, 18 and 14 to expand the latter while in a. kerf back of the cutter frame and thus break the core of material from the mine wall. The reservoir 156 may be provided with a lilling opening 164 provided with a cap 165.

The piston 154 is a part of an air pump of an accumulator and acts to draw air past the check valve 166 into the chamber above the piston 154 and thence past the check valve 167 through the passage 168 into the chamber 169 back of the piston 170 which is provided on its opposite side with a plunger 171 extending into the cylindrical recess 172 which is connected by a passageway at its rear end with a passageway 160. Said passageway 178 is controlled by a hand operated valve 174.

On the crank shaft 122 is mounted a worm 175 meshing with a worin wheel 176 carrying a cam 177 which is used tor reciprocating a rod 17 8 to automatically control the valves 157 and 161. Such control of the valves 157 and 161 is diagrammatically illustrated by Figs. 17 and 18. vThe rod 178 may be 1nounted to slide longitudinally in the bearings 179 and 186 fixed to the frame 151. By means ot a set screw 181 a collar 182 is secured to the rod 178 in adjusted position. The valve 157 is provided with an actuating lever 188 which is connected by a link 184 to the collar 182. The upper end of the rod 178 is connected by a link 185 to an actuating lever 186 connected to the valve 187. lt will be seen that when the cam 177 lifts the rod 178 it closes the valve 157 and takes the valve 161 from connection with the passageway 16() and moves it into registry with the passageway 163. lWhen the cam 177 is in the position shown in Fig. 18 the rod 178 is lowered and the valve 157 opened from the reservoir 156 to the passageway leading to the chamber above the piston 155. At the saine time the valve 161 is opened from the passageway 160 to the pipe 130. During this interval the pump operates to exert hydraulic pressure on the hydraulic breaking device connected to the pipe 180 and located in a kort'. In order to insure the transmission of the hydraulic pressure into the pipe a cheek valve 158 is provided which opens Afrom the reservoir to the piston but closes in the opposite direction.

The reciprocating rod 178 and the connections between the same and the valves 157 and 161 and the cani 177 are 'tor the purpose ot' securing automatic intermittent oilieration ot the hydraulic breaking device connected to the pipe 13() in the kerf. The apparatus is so adjusted that after the hydraulic brcaking device has been expended to its limit the valve 157 is first closed to cut oil' the .supply of water from the reservoir 156 to the piston 155 and immediately after the closing ol the valve 157 valve 161 is closed as to the passage and opened as to the passage 168. ylhe hydraulic pressure in the pipe 130 and in the hydraulic breaking device will then be released and the pair of springs, one ot which is illustrated at 149. will then act to restore the piston 139 to initial position and force the water in the piston casing 187 back through the pipe 130 and through the valve 161 into the reservoir 156 to be used over again in the next cycle of operations.

By replacing cam 177 by another cam 177 of a slightly different shape and releasing the set screw 181 so as to permit free movement of the rod 178 through the collar 182 while the valve 157 is left permanently in open position, and the valve 17 4 is moved to a permanent open position, the mechanism shown in Figs. 19 and 20 may be used in combination with the pneumatic accumulator to operate the hydraulic breaking device with hammer blows. lhen the cam 177 is in the position shown in Fig. 20 and the cylinder 172 is filled with water while the piston 170 is in the position shown in Fig. 16 the air pump will be operated to pump air into the chamber 169 until any desired pressure is obtained. During this operation the valve 161 is closed to the passage 160 but opened to the passage 168, the breaking device being then released. When the cam 177 moved to the position shown in Fig. 19, however, the valve 161 will be moved into a position where the pressure exerted by the water in the chamber 172 will be allowed to act through t-he pipe 180 on the breaking device. lnasmuch as the accumulator stores up considerable. air pressure a sudden impulse will be exerted on the breaking device to cause the same to strike a hammer blow on the core of material cut by the cutters. Inasmuch as the accumulator actsquickly, the recess in the cam 177 may be short, thereby` allowing more time for the pump to act to store up sulicient energy for the next impulse to act through the water medium on the hydraulic breaking device. During the period while the valve'157 is in open position and while the operation illustrated in Figs. 19 and 20 is being carried out, the piston 155 may be disconnected from the crank shaft 124 or a suitable outlet to the atmosphere afforded from the passage above the piston. but even if the parts are left as shown the piston 155 will not interfere with the operation of the air pump because of the small amount of air pressure on the piston 155. A valve for the chamber above the piston 155 may be used similarly to the valve 187 which when open .may let the piston run freely without doing any appreciable work.

In order to mount the plane kerf cutters on the frame 66 ahead of and in the same planes as the upper a-nd lower runs of the loo-p chain core cutter and operate such plane kerf cutters from the gear 56 a part of its casing is in the form of a cap detach ably connected. On the frame 66 is a bearing 189 shown in Figs. 8 and 8. New by removing the cap 188 and extending a shaft 190 to the bearing 189 as shown in Fig. 26 an additional bevel gear 191 may be brought into mesh with the bevel gear 56 on the shaft 57. On the opposite end of the shaft 190 is a bevel gear 192 meshing with the large bevel gear 198 keyed to a shaft l194 in the bearing 195 which is mounted on chain cutter frame 207 shown in Fig. 25. It

will be seen by comparing Figs. 25 and 27 that the chain cutter frame 207 is rigidly connected to the frame 204 and that the latter is bifurcated to form spaced apart vertical bearings 208 and 209 for securing certain adjustments of the lower plane kerf cutter. When the shaft 194 is rotated by power transmitted through the bevel gear 198 both the bevel gears 208 and 210 are rotated in the same direction. 1n order to secure the same direction of actua-tion of the upper cutter as the lower cutter the bevel gear 211 meshes with a gear 210 diagonally from the meshing of the gears 202 and 208. It should be noticed that inFig. 27 the gear'202 is not in mesh with the gear 210 nor is the gear .11 in mesh with gear 208. wWhen the gear 211 is rotated power is transmitted to the sprocket wheel 212 to actuate the chain cutter 218 mounted on an upper cutter frame 214 the rear portion of which has a bearing 215 for the vertical shaft 216.

Between the shaft 217 which is keyed to the gear 211 is a collar 218 resting against the upper end of the sleeve 219 which is provided with a. screw-threaded upper portion lon which fits a nut 220. Fitting over he sleeve 219 is a collar 221 provided with laterally and downwardly extending bearings 222 and 228 and also with a forward bracket 224 having a Yrectangular vert-ical opening 225 therein through which extends the vertical bar 226 having a rack on its forward base for engagement by a worm 228 as shown in Fig. 25. The worm 228 is provided with a shaft 229 the ends of which are journaled in the bearings 280 which are mounted at the upper and lower ends of the bracket 224 as shown in Fig. 29. By means of the squared heads 281 the upper chain cutter frame may be adjusted in elevation, the shaft 217 sliding through the sleeve 219 but being splined thereto so that rotation ofthe bevel gear 211 will be transmitted to the sprocket 212.

It should be noted that the bearings 195 and 201l in F ig.Y 27 are integral with the frame 197 which is secured to the frame 66. lt is therefore evident that the worm gear 282 remains in fixed position and when the worm 288 is rotated its connection with the frame 222 will cause the upper kerf cutter to Cil seen that the upper worm 2st) be tilted on the bearings 19V and 261. Then the lower worm is rotated its connection at to the frame 204; will cause the lower korf cutter to be tilted on the bearings and 201. referring to it will be is provided with squared ends 236 for manual turning and the lower worm 234; is provided with squared ends for manual turning. l't will thus be seen that the upper and lower plane kerf cutter may be independently adjusted. and each adjusted so as to be in the corresponoin` planes of the upper and lower runs of the loop chain core cutter and therefore in converging relation. t should also be noted that t ie upper kerf cutter may have its elevation adjusted irrespective of what inclined position it. may be in.

ln Fig. 21 the dotted lilies 238 illustrate approximately the position of the loop chain core cutter relatively to the plane kerf cutter. Then the loop chain core cutter is omitted provision is made for supporting` the hyd ran lic breaker from the frame which carries the upper plane kertI cutter. As shown in Figsf22 and 25, a. bracket :i239 is detachably connected at 24:6 to the rear end oi' the cutter fra-me 214. its shown in 2l, the bracket 239 is provided with a rearwardly extending arm 241 which is continued longitudinally of the pla-ne kerf cutter and in the plane thereof a supporting' bar for the breakin p; device secured thereto at 2&3. Said breaking; device is similar to that shown in Figs. 12: 13 and 14. lt should be understood that the breakingr device is detachable from the supporting bar 242 and that said supportinp,- bai-)is detachable from the frame 21st of the upper plane kerf cutter. is shown in Fins.

and 25. there are eert-ain tilt-ing' and elevational adjustment-s of the upper plane kerf cutter but inasmuch the supportin bar 242 is ri fridly attached to the plane of the upper plane kerf cut-ter, such bar together with the breaking' device attached thereto, will receive corresponding adjustment and therefore. alwavs remain in the plane of the kerf cutter so to follow in the kerf produced thereby.

In Fi 5 the pumping' apparatus is shown connected by a pipe 130 which may be of metal and does not require any flexible joints because flexible itself and fixed to the cutter frame and movable therewith. Tvvvhen it is desired to mount the pumping` apparatus on the traine 66. particularly when the brezil'- ingdevice is connected to the bar 2 as shown in Fig. 21. a swivel joint may be placed in the pipe 130 as shown at in the diagrammatic illustration of Fia'. 2lijtlso diagrammatically illustrated in Fig'. 2st is an expansion joint to permit the elevation ot the breaking; device to be varied together with the entire plane keri' cutter. relatively to the pumping` apparatus. Bot-li the swivel joint 24st and the expansion joint 245 may be of typeswcll known to those skilled in the art.

frs shown in Figs. 21 and 25, the plane kerf cutter frames may be made in sections and 2-.l7 slidably fitted together at 2&6 to permit relative adjustment bj.' means of the nuts 2119 on the screw-threaded rod 250 which is connected at 251 to the cross piece at one end, the other end passino` through and opening in the plate 246 as shown in Fig. 21. By means of this adjustment the chain may be tightened or loosened as may be desired. Furthermore, by taking out or inserting links in the chain, the length of the chain cutter may be varied. The plane kerf cutters may be guided alongr the peripheral portion of the section 247 as shown in Fig. 23.

The conveyo apparatus is mounted to rotate with the rotary frame all and the forward section of the conveyor is movable up and down with the kerf cutting mechanism. As shown in Figs. 3 and 6, a supporting; bracket is rigidly secured by means of the vertical plate 129 to the vertical plate 168 which may be integral with or rigidly iastened to the rotary hub la shown in Figs. 3, it and 6. T he said supporting bracl et designated 128 affords a suitable bearing;r support for the lower end of the vertical shaft 112 as shown at 127 in Fig. 5. A bevel gear 253 at the lower end of the vertical shaft 112 meshes with the bevel gear 254 which is mounted at one end of the shaft 255 rotataljile in the bearings 256 and 257 and carrying at intermediate points the sprockets 258 and 259 for driving the sprocket chains of the endless conveyor, the inner sprocket chain 260 being` shown in Fig. 10; additional sprockets 261 and 262 are provided on a cross shaft 263 at the rear end of t-he conveyor7 as shown in Fia'. 3. The cross shaft 263 may be mounted in bearings 264 and 265 on a conveyor frame 266 on which the bearings 256 and 257 are also mounted. The conveyor frame 266 may be constructed as shown in Fig. 9 wherein the chains 260 and 26S) are connected by the cross pieces 270 in the usual manner.

Vilhle the front portion of the conveyor frame 266 is rigidly att-ached to the bracket plate 128 at 267 and 268, the rear portion of said conveyor frame may be connected at 27 and 272 to the horizontal bracket plate 27?) which is in turn connected by the vertical plate 271i to the vertical plate 1.6 extending' to the left from the hub 4.4 as shown in Fig. El.

Pivotally connected at 275 and 276 is the forward conveyor frame 277 which is shown in cross section in Fig. 9. The bottom plate 278 of the conveyor frame 277 is extended laterally into a platform 279 to connect the space intervening` between the forward section of the conveyor and the kei-f cutting

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