US1174163A - Auger-machine for boring blast-holes. - Google Patents

Description

AUGER MACHINE FOR BORING BLAST HOLES.

APPLICATION FILED FEB. 6. l9l5.

Patented Mar. 7, 1916.

3 SHEETS-SHEET 1.

ATTO RN EY Patented M211. T, 1916.

3 SHEETS-SHEET 2.

7 m M w" j p n n a;

Q i 1- a wmW% 3 U, "0 Ve w w r 8 w r m w 1' w 0 6 v r 0 0 .9 E a s a e a r. 0 m 0 c v 1 u x W l1 May ATTO R N EY H. F. JOHNSTON AUG APPLICATION FILED FEB. 6. 1915.

WITNESSES f f f H. F. JOHNSTON, G. E. WAGNER 81 R. M. DOWNIE.

AUGER MACHINE FOR BORING BLAST HOLES.

APPLICATION FILED FIzB. 6. I915.

Iatvnted Mar. 7, I916.

3 SHEEIS SHtkI' 3.

Inventors. [fa rn fJo/inazo n, G ee rqe E Wayne r, JP bcrf/W D0 Ion/e.

ATTO R N EY I UNITED STATES PATENT OFFICE.

HARRY F. JOHNSTON, GEORGE E. WAGNER, AND ROBERT M. DOWNIE, OF BEAVER FALLS, PENNSYLVANIA, ASSIGNORS TO KEYSTONE DRILLER OOMIANY, OF BEAVER FALLS, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

Specification of Letters Patent.

Patented Mar. '7, 1916.

Application filed February 6, 1915. Serial No. 6,592.

' To all whom it may concern:

Be it known that we, HARRY F. JOHN- s'roN, GEORGE E. WAGNER, and RoBEnT M. DOWNIE, citizens of the United States, residing at Beaver Falls, in the county of Beaver and State of"Pennsylvania, have invented anew and useful Auger-Machine for Boring Blast-Holes, of which the following is a specification.

This invention has reference to auger machines for boring blast holes, and its object is to bore blast holes of moderate depth in soft rock, coal,' soapstone, and hard-pan preparatory to blasting to'loosen the over burden in stripping coal measuresjand ore.

deposits and in blowing up strata of hardpan for the purpose ofdraining old lake beds, etc. r

In accordance with the present invention there is provided a vehicle having traction devices and carrying a power unit which may be in the form of a steam engine, an explosion engine, or an electric motor in accordance with the available conditions. The vehicle is provided with a mast or derrick=which may be jointed at some convenient point to fold over the vehicle to facilitate transportation. Mounted on the derrick is an auger tube carrying an anger chuck designed to hold a suitable earth anger of suflicient length for the purpose for which the machine is designed, the tube constituting holding and steadying means for an auger of much greater length than the extent of travel of the tube in feeding the auger, so ,that the machine will bore a hole of relatively great depth.

The invention contemplates the provision ofrotating and feeding means for the auger, which feeding means may supplement the force of gravity in causing the auger to enter the ground and to bore its way through obstructions. Provision is also .made for the introduction of the auger into the holding tube and its removal therefrom even though the length of the auger greatly exceed the distance of the chuck from the ground level in the retracted position of the auger tube.

The invention will be best understood from a consideration of the following detailed description, taken in connection with the accompanying drawings forming a part of this specification, with the further understanding that while the drawings show a practical form of the invention, the latter is not confined to any strict conformity with the showing of the drawings, but may be changed and modified so long as such changes and modifications mark no material departure from the salient features of the invention.

In the drawings :Figure 1 is a side elevation oftheauger: machine of the present invention with some parts broken away to reveal more distant parts. Fig. 2 is a front elevation of the machine; Fig. 3 is a plan view of the machine. Fig. 4 is a section on the line 41 of Fig.1 but drawn on a larger scale. Fig. ,5is a section on the line 5-5 of Fig. 4 with some distant parts omitted. Fig. 6.is an elevation of the carrying plate for the. auger tube. Fig. 7 is a longitudinal section through one of the clamps for the auger tube rock-plate, the section also cutting the auger-tube rock and carrying plates. v

Referring to the drawings there is shown a body frame comprising .sills 1 and connecting cross-pieces 2 wherever needed for imparting rigidity to the frame. The body frame is mounted ilpon traction wheels 3 and front or steering wheels 4, which latter are controlled by .a steering shaft 5 terminating in a steering hand wheel 6 which is carried to a convenient point at-the rear of the machine. Mounted on the frame of the vehicle near what may be termed the rear end is a boiler 7 and. engine 8 connected by transmission gearing 9 to the traction wheels 3, whereby the. machine may be caused to travel from place to place. The boiler and engine may be taken as typical of any motive power for the vehicle, it being sometimes advisable to employan explosion engine in place of the steam engine shown in the drawings, and under some circumstances-an electric motor may be used. The parts so far described, however, may be of any suitable approved construction, and as such construction forms no part of the present invention any specific description of the body structure and motive parts of the machine is deemed to be unnecessary and hence is omitted.

At a convenient point between the ends of the body frame a countershaft 10 is mounted in bearings 11 which in turn are carried by the sills 1 or upon any suitable supports on the body of the vehicle. This countershaft has fast thereon a sprocket wheel 12 connected by a sprocket chain 13 to another sprocket Wheel 14 driven by the engine 8 in any suitable manner." Mounted on the shaft. 10 so as to slide therealon'g and rotate therewith are two spaced friction disks 15, 16, respectively, joined by an elongated hub 17. For convenience of manufacture and operation the disks 15 and 16 and the hub 17 may constitute a single cast-- collars l9 on'the hub, and this sleeve is provided with an arm :20 connected by a link 21 to one end of a lever 22 carried by a support 23 which may be in the form of a bracket fast to one of the sills 1. The lever 22 is extended to the front of the machine where it may be formed into or provided with a-suitable handle within ready reach of an operator located atthe front of the machine, so that the twin disks'15, 16' may be moved along the shaft 10 at the will of an operator for a purpose to be described.

Carried .by' suitable bearings 24 in turn supported by the main frame is a. shaft 25 extending lengthwise of the frame in about its longitudinal mid line. This shaft 25 is provided near the front endwith a worm 26 and near the rear end with a frictionwheel 27 in position to be engaged by one or the other of the friction disks 15 and 16, but the spacing of these disks is such" that but one of them may be brought into engagement with the wheel 27 at a time,

and both may be moved so as to be out of engagement with the wheel 27. v

Meshing with the worm 26 is a worm wheel 28 carried by shaft 29 mounted in bearings 30 in turn carried by a frame 31 rising from the sills '1 near the front end of the. machine. This frame is connected to ,and in part supported by'uprighttimbers 32 which in conjunction with corresponding upright timbers 32 constitute the lower or basic part. of a mast or derrickerected on the front of the main or body frame of the vehicle for a purpose which will hereinafter appear. The shaft 29carries drums 34 fast thereto -on opposite sides of: the worm wheel 28.

Attached to the upper ends of the timbers 32 by hinges 35 are other uprights 36 to which the upper ends of the timbers 33 are ,secured. Made fast to the upper ends of the timbers 33 are strips 37 in front of the timbers 36 and spaced therefrom a. short distance. Secured to the upper end of what constitutes the upper section of the derrick, which upper section is made up of the timbers 36 and strips 37 with cross pieces 38 and braces 39, are blocks 40 constituting journal bearings for a shaft 41. In order to hold the hinged or upper end of the derrick firmly to the timbers 32 constituting the basic end of the derrick there are provided bolts 42 traversing the timbers 32 and 33 near their lower ends and below the hinge 35. When the bolts 42 are in place the two sections of the derrick are held in an approximately upright'position, but when. the bolts 42 are removed the upper end of the derrick be moved in the hinge 35 until this portion of the derrick approaches the horizontal position, thus compacting the structure for transportation. To steady the derrick extended braces 43 are provided, these braces being connected to the timbers 36 near their upper ends and to brackets 44 on the upper ends of uprights .45 erected on the sills 1 near their rear ends, and these uprights 45 are suitably stiffened by brace bars 46 connected to the upper ends of the uprights and extending forwardly to the sills 1. Of course it will be understood that the braces 43 areloosened from the brackets 44 when it is desired to lower the hinged upper end'o-f the derrick. Since the hinging of the derrick and the manner of bracing it is not a part of the present invention and -has been heretofore proposed no specific description thereof is deemed to be necessarv.

The shaft 41 carries sheaves 47 spaced apart in the direction of the width of the derrick for a distance similar to the spacing -of the drums 34. Each drum 34 isencircled by a few turns of a rope or cable48, there being such a rope or cable for each drum and this rope is preferably, though not necessarily, a wire rope. One end of each rope 48-extends upwardly from the respective drum 34 to the corresponding sheave 47 and over the latter and thence downwardly in front of the derrick to a cross bar 49 to which it is fastened by being formed into a loop 50 with the free end returned upon the rope and there secured by clips 51 in the usual manner. The bar 49 has recesses 52 near the ends each engaged In order to carry the runs of the ropes leading to the turn buckles in front of the derrick, the beams 33 support near their lower ends a rod 57 on which are loosely mounted sheaves 58 about which the corre- The bar 49 is formed intermediately of its length into a bearing 59 and is also made fast to a cross head 60 slidable lengthwise of the upper or hinged end of the derrick between the beams 36 and the strips 37 which serve'as guides. for the cross head. The

hearing 59 is traversedby a tube 61 held against lengthwise movement by collars 62 on opposite sides of the hearing. The result of this construction is that the tube inay be rotated upon its longitudinal axis in the bearing 59.' butcannot move lengthwisethereof. The tube 61 will, however, participate in movements of the cross head up and down the derrick, These movements of the cross head and of the auger tube with it are un t through th pre et eh n 3, h h

latter may be ken a typica of any u able dri ng en ieet en, Whe her or not a sprocket cha n dr ve. e employed When ne tith disks lh-and 1651s inevedinte engag ment w th the fr etien. wh e .127 t nI is impart t the ropes 48 n at s e thin to lif he dr ss h a 0 and With it the u e 6 When the 'ethe iri tion disk i breught into. enga men with th frietien. whee th i'ess'hea 'tt istereed dlewn: wardlynnd the tube 61 participates in sneh dewnward ineveinent- Festtethebeeni 33 near their up er ail n. F gs ft in 7' than in the? othe fi AbQht id a 9 th lengt Qithe late .63 it s tra ersed by a s ii 6t extendin yend the fr n 'dt this plhite M 'nhted.

e i'the t d 6% is ii'teek ihle plate 5, hith.

.ea y a tu ular hafthh With eolla' i er ange 6 n P s tien to en hse th bean i 66 to P ev n lengitnd nhll ov ment of th shaft in its beatings Wi heiit iner, v

i h to extend thi'eugh the tnhe'i l and.-

ends a cross plate .63 shewn'in greate terference with rotation of the shaft. One end of the shaft 68, and this may he'the upper end thereof, is formed into or provided with a bevel gear wheel 69 engaged by a bevel pinion 70 on one end of a countershaft 71 mounted in journal bearings 72 formed on or carried by the plate 63 near one end thereof. Keyed or otherwise fastened to the shaft 71 at the end thereof remote from the pinion 70 is a sprocket wheel 73 connected by a sprocket chain 74 to a sprocket wheel 7 5 loosely mounted on a prolongation of the shaft 10 beyond a corresponding one of the sills 1. Mounted on this prolongation of. the shaft lQ is aclutch member 76 movable into and out of engage- .ment with another clutch member 77 on the sprocket wheel 75. The clutch member 76 is under the controlof an operating-lever 78 inounted'on a bracket 79 or other support a e by th r e p nding sill lhe lever 78 is prolonged toward the front of the machine into easy reach of an operator,

The geiir Whee 69 i f rm d provided with a key or spline 80 working in-a longis tndin ey-w y 1 en the't e 61.- By th s means the tube 61 has rotative movement impar e t it 'withd tinterfei'ene h he movement of th tu e 6 long tudina y; th ough h hollow tube dri ng shaft 68.

The dish 65 is ormed on opposite "sid s with curved slots 2'stin' k from the cent r f th disk as axis; Ea h s ot is tra sed by n s ew tem 83 hreade in th Plate 63 and. C ying Screw ve p v de a the enterend wi h a man pula i g wheel-8 Thea rangem t s i eh hat the e ves clamp a ainst the disk to leek t in pdsi ion, ut on t rni g th sleeves in.

h appropr ate direction the disk 65 i l osen e r tu ning n th stu he t b 61 a What cens t tes ewd: end berrie s hnek. 8 des'i n e a 1 d by an augei' 6;.Whieh1a t r may b f f nvenient to inse t then gei' n the tube 5 thi' n h h itter d he eof the ther pl te 'd sli he s Plm' ed- By l seni th lamps n th stems 83 th plated? ay be e kd pen the 'Istem o bring th ange tub fetter eing le ed f n the bi'iiehethi at ssn ebl angle la e l y o the front face oft/he derrick to allow the introducti n o the ang int th a g tube through the chuck end thereof.' When this is accomplished the parts are returned to and 'elemredin the upr t Po n h the ge r whee .9 in mes itlithe Pinion 7 so that the machine is then ready for operation.

When the machine is properly located at the point where the boring is to proceed the auger is so adjusted in the auger tube WlllCll is assumed to then be in the highest position with the derrick upright, that the boring end of the auger is in engagement With the ground or about in such engagement. Assuming that the engine is in operation the shaft 10 is being continuously rotated but with the disks 15 and 16 out of engagement with the friction wheel 27 and the clutch members 7 6 and 77 out of engagement the boring tool or auger remains quiescent. To

' startthe auger into rotation the operator auger tube is not then being rotated.

moves the lever 78 to engage the clutch members 76 and 77,. whereupon the power is transmitted from the sprocket wheel 7 5 by way of the sprocket chain TLto the sprocket wheel 73. From the latter through the shaft 71, pinion'70 and .gear wheel 69 rotative movement is'imparted'to the tube 61 and by the latter through the chuck 85 to the auger 86. If the material to be bored is relatively soft the weight of the auger and parts carrying it is suflicient to cause the auger to bore into the relatively soft material and hence it is unnecessary to bring the drums 34 into action except to a degree sufficient to permit the ropes to follow up the lowering movement of the auger and tubular holder therefor, since the worm 26 and worm wheel 28 constitute an effective lock holding the auger and tube carrying it against any lowering movements due to their weight. If the material being bored by the auger offers a resistance superior to the force of gravity acting on the auger, the operator by a manipulation of the lever 22 moves the proper one of the disks 15 and 16 into engagement with the friction wheel 27, whereupon the drums 34 are rotated and the ropes 48 are forcibly propelled in a direction to forcibly lower the cross head and with it the auger tube 61, thus exerting a corresponding force upon the auger, so that it will bore through the resisting material. Ultimately the auger tube is lowered as far as it is intended to travel downwardly, and then the chuck is loosened and by a suitable manipulation of the lever 22 the direction of rotation of the drums 34 is reversed and the auger tube. but not the auger, is lifted to the original high position. When such high position is attainedthe friction drive is thrown out of action and the chuck is made fast to the auger. During this return movement. of the auger tube the clutch members 76 and77 are disengaged, so that the After the parts have been reengaged the clutch members 76 and 77 are again brought into action to cause the rotation of theauger in the manner already described. Further with respect to the auger tube, further rotation of the auger is stopped and the auger is Withdrawn by a reversal of the action of the auger tube thereon, the auger being lifted by as many stages as were necessary to drive it into the ground.

WVhenever it is necessary or desirable to remove the auger from the auger tube or insert it therein the auger tube is rocked upon the stud 64 as an axis until the angular relation of the tube to the derrick is such as to permit the desired manipulation of the auger.

The tubular auger holder may, of course, be of skeleton form instead of a continuous- Wall tube or of any other suitable construction so long as it serves as a holder and guide for the auger, and the word tubular is to be so understood.

WVhat is claimed is 1. A machine'for the purpose described, provided with an elongated tubular auger holder having a chuck at one end for securing an elongated auger of greater length vthan the holder at any point along the rection.

2. In a machine for the purpose described, a derrick, a normally upright elongated tubular holder thereon provided at the lower end with means for securing an elongated auger thereto at any point along the length of saidauger and the tubular holder also having a free bore throughout open at both ends and of a diameter to be wholly traversed by the auger, meansfor positively moving the holder lengthwise in either direction, and means for rotating the holder, said last-named means being independent of the means for moving the holder lengthwise.

3. A machine for the purpose described, comprising aderrick, an open ended sleeve mounted .on the derrick for rocking movements about an axis perpendicular to the length of the sleeve, an open ended tube tube having a chuck at one end for securing the auger thereto at any point along the length of said auger, means for positively v moving the tube longitudinally in. either direction, and means for rotating the sleeve,

said tube being connectedto the sleeve for participating in the rotary movements of the latter and the means for rotating the sleeve being independent of the means for moving the tube lengthwise.

4. A machine for the purpose described provided with a tubular auger holder having a chuck at one end for securing an elongated earth entering auger thereto, said holder being freely open throughout and having its bore of a size to be traversed by the auger, means for-rotating the tubular holder, and a single means independent of the means for rotating the holder for positively advancing said holder lengthwise to feed the auger and for retracting the holder independently of the auger.

5. In a machine for the purpose described,

a derrick, an elongated tubular auger receptacle and holder, a mounting for the holder on the derrick movable with the holder about an axis perpendicular to the length of the holder and derrick, whereby the holder may be moved from a substantially upright working position into angular relation to said working position for the introduction and removal of an elongated auger a plurality of times the length of said holder, separable means for rotating the holder about its longitudinal axis in position on the derrick to rotate the holder when in the upright working position only, and means independent ofthe means for rotating the holder positively imparting lengthwise movement to the holder and having means for driving it in'either direction at the will of an operator.

6. In a machine for the purpose described, a derrick, an elongated tubular auger holder, a mounting, for the auger on the derrick movable about an axis perpendicular to the length ofthe holder and derrick to carry said holder from a substantially upright working position into angular relation thereto for the. introduction and removal of an elongated. auger a plurality of times, the

length ofsaid holder, separable means for:

the holder about its longitudinal axis with the part of the'holder-rotating,

rotatin means on the holder movable therewith out of engagement with the remainder of said holder-rotating means, whereby'the holder is rotated when in the upright position only, and means independent of the holder-rotat ing means for positively imparting lengthwise movement to the holder in both directions and having means for driving said last-named means in either direction at the will of an operator. v

7. In amachine for the purpose described, a derrick, a rockable mounting thereon, a rotatable hollow shaft on the rockable mounting, driving meansj'for the shaft, an elongated hollow tubular member movable lengthwise through the hollow shaft and 8. In a machine for the purpose described,

a derrick, a rockable mounting thereon, a

vrotatable hollow shaft on the rockable mounting, driving means for the shaft, an elongated hollow tubular member movable lengthwise through the hollow shaft and connected thereto for rotative movements by said hollow shaft, and also provi'ded with means for securing an elongated earth entering auger thereto, a cross-head carried'by the derrick and movable lengthwise thereof and connected to the tubular member for causing lengthwise movements thereof, and means for moving the cross head in' either direction to impart corresponding. movements to the tubular member, said lastnamed means comprising unitary rope actuating-means for the cross head connected to opposite sides thereof, a unitarydrum drive for said rope means tofmove it posi, tively in opposite directions, and driving means for the drum dri-veincluding direction reversing means.-- j,

9. In a machine for the purpose described, a-derrick, a rockable mountm thereon, a rotatable hollow shaft on t e rockable mounting, driving means forthe shaft, an elongated hollow tubular member movable lengthwise through the hollow shaft and connected thereto for rotative movements by said hollow shaft and also provided with means for securing an elongated earth -entering auger thereto, a cross head carried by the derrick and movable lengthwise thereof and connected to the tubular member for causing lengthwise movements thereof, and means for-moving thecross head in either direction ;to-impart corresponding movements {to the tubular member, said lastnamed means'comp'risinga unitary rope 3C,

Ltuating-mean's for the cross head connected. to opposite. s1des thereof, a unitary drum drive for said rope means to move it posis tively in opposite directions, and driving means for the drum drive comprising .direc-- tion reversing means consisting of a friction wheel, worm gear 'c'onnectionstherefrom to the drum drive, and oppositely acting friction disks movable to ether into individual engagement with thefriction wheel. 10. In a machine for the purpose described, a derrick, an anger holder mounted on and movable longitudinally of the derrick, and means for moving the auger holder positively in 'both directions, comprising ropes each connected at both ends to the holder with directionchanging sheaves around which the ropes pass to reverse the direction vof their runs, drums'having frictionturns of the ropes about them, a -worm gear connected to thedrums for driving them, and a friction gear for driving the worm gear comprising a friction wheel and connected disks spaced apart by a greater distance than the diameter of the friction wheel and movable individually into engagement with the friction wheel at respectively opposite sides thereof to change the direction of movement of the friction wheel or to remain in idle relation thereto, at will.

11. In a machine for the purpose described, a derrick, an elongated tubular holder mounted thereon for movement lengthwise thereof, means for rotating the holder, a cross head guided on the derrick and connected to the tubular member for moving it positively in opposite directions, and means for imparting positive moveinents to the cross head comprising ropes each connected at opposite ends to-the cross head, sheaves at the top andbottom portions of the derrick and around which the ropes pass for changing the direction of their runs, drums with friction turns of intermediate portionsof the ropes about them, a worm gear for driving the drums, and lockin the drums in the inactive position, and a frlction gear. for driving the worm, gear having means for reversing the direction of movement of the worm gear and constructed to allow the worm gear to remain in the inactive position; 7

12. In a machine for the purpose described, a derrick, an elongated tubular holder mounted thereon for movement lengthwise thereof, means for rotating the holder, a cross head guided in the derrick and connected to the tubular member for moving it positively in opposite directions, and means for imparting positive movements to the cross head comprising ropes each connected at opposite ends to the cross head, sheaves at the top and bottom portions of the derrick around which the ropes pass for changing the direction of their runs, drums vwith friction turns of intermediate portions of the ropes about them, a worm gear for driving the drums and lockin the drums in the inactive position, and a friction gear for driving the worm gear having means for reversing the direction of movement of the worm gear and constructed to allow the worm gear to remain in the inactive position, said derrick being also provided with mechanism for imparting rotative movements tothe tubular holder;

13. In a machine for the. purpose described, a derrick, an elongated tubular auger holder thereon having a normal upright position on the derrick and provided with a chuck at the lower end for securing an elongated earth-entering auger thereto, said auger being a plurality of times the length of the holder and the latter'beingof an inner diameter throughout to be traversed by the auger, and a mounting for the tubular holder rockable on the derrick about an axis perpendicular to the length of the derrick, said mounting and tubular holder having a range of movement from a normal upright position to an inclined position permitting the reception in and removal from the holder of the elongated auger.

14. In a machine for the purpose described, a derrick, a rockable plate thereon having curved slots therein, clamp screws extending through the slots for securing the plate in different positions of rotation bout anaxis perpendicular to the length of the derrick, a hollow drive shaft mounted on the plate and including a gear wheel in eccentric relation to the axis of rocking of the plate, means on the derrick for rotating the shaft through the gear wheel, and an elongated tube mounted in the hollow shaft and movable lengthwise thereof and coupled thereto for rotation therewith, said tube havdicular to the length of the derrick and provided with slots concentric with the axis of rotation, clamp screws extending through the slots for holding the plate in adjusted positions of rotation about its axis, bearings on the plate, a hollow shaft mounted in the bearings and carrying a gear wheel in eccentric relation to the axis of rocking of the plate, a shaft mounted on the derrick and provided with another gear Wheel normally meshing with and toward and from which the first named gear wheel is movable with said plate, driving connections for the shaft including a throw out clutch, and an elongated tube'mounted in the hollow shaft and movable lengthwise thereof, said tube being connected 'to the hollow shaft for rotation therewith and provided with a chuck'at one end for the reception of an elongated earthentering auger, said chuck and tube being of an internal size to permit the tube to be traversed by the auger and to en age and hold the anger at any point along t e length thereof.

, 16, In a machine for the purpose described, a derrick, a plate mounted thereon for rocking movements on a axis perpendicular to the length of the'derrick and provided with slots concentric with the axis of rotation, clamp screws extending through the slots for holding the pla'te in adjusted positions of rotation about its axis, bearings on the plate, a hollowshaft mounted in the bearings and carrying a gear wheel in eccenv trio relation to the axis of rocking of the plate, a shaft mountedon the derrick and provided with another gear wheel normally meshing with and toward and from which the first named gear wheel is movable With said plate, driving connections for the shaft including a throw out clutch, and an elongated tube mounted in the hollow shaft and movable lengthwise thereof, said tube being connected to the, hollow shaft for rotation therewith and provided with a chuck at one end for thereception of an elongated earthentering auger, said chuck and tube being of an internal'size to permit the tube to be traversed by the auger and to engage and hold the auger at any point along the length thereof, said tube having means attached thereto for positively moving it lengthwise in either direction.

17. In a machine for the purpose described, a derrick, an auger holder mounted on and movable longitudinally of the derrick, and means for moving the auger holder positively in both directions comprising ropes each connected at both ends to the holder and including take-up means for regulating-the tension of said ropes, drums having friction turns of the ropes about them, and means for driving the drums.

18.'In a machine for the purpose de scribed, a derrick, an auger holder mounted on and movable longitudinally of the derrick, and means for moving the auger holder positively in both directions comprising ropes each connected at both ends to the holder and including turn-buckles for regulating the tensionof said ropes, drums hav 40 Copies of this patent may be obtained for five cents each, by addressing the commissioner of Patents,

Washington, D. G.

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