US1776779A - Well drilling and pumping apparatus - Google Patents

Description

Sept. 30, 1930. J, BRICKEN 1,776,779

WELL DRILLING AND PUMPING APPARATUS Fi d July 50. 1926 9 Sheets-Sheet l 'III/I/IIIIII/flI/IIIIIIIIIIIIIIIIIIIII "IIIIIII/I/I/I/II/l/II INVENTOR. JOHN B R IC K EN P 30, 1930- J. BRICKEN I WELL DRILLING AND PUMPING APPARATUS Filed July 30. 1926 9 SheetsSheet Q INVENTOR. (JOHN 5R I C K E N Se t. 30, 1930 J. BRICKEN 1,776,779

WELL DRILIIJING AND PUMPING APPARATUS Filed July 30, 1926 9 Sheets-Sheet 3 Y INVENTOR. dOHN BRICKEN Sept. 30, 1930.

J. BRICKEN WELL DRILLING AND PUMPING APPARATUS Filed July so, i926 9 Sheets-Sheet I N VEN TOR. uoH/v BRICKEN A TTORNE Y.

Se pt.30,1930. MC EN 1,776,779

WELL DRILLING AND PUMPING APPARATUS Filed July :50, 1926 9 Sheets-Sheet 5 {III/I/Illa I II I II INVENTOR. dOHN BR/CKEN lax 5% I i TTORNEY.

Sept. 30, 1930. J. BRICKEN v WELL DRILLING AND PUMPING APPARATUS Filed July so, 1926 9 Sheets-Sheet VENTOR. -JOHN BRICKEN Z ATTORNEY.

Sept. 30, 1930. I J. BRICKEN WELL DRILLING AND PUMPING APPARATUS 9 Sheets-Sheet Se t. 30, 1930. J. BRICKE N I I WELL DRILLING AND PUMPING APPARATUS Filed July 30. 1926 NW1 M v mNQ .MNQ MAN T B B W ww, I- H NW y .5 r vm w W 2 MS ww. 7 MN ii wm L wm Nu m NN m m .nm

JOHN BR ICKEN Sept. 30,-1930. J. BRICKEN WELLDRILLING AND PUMPING APPARATUS Yiled July 30, 1926 9 Sheets-Sheet 9 INVENTOR. JOHN BR ICK E N A TTORNEY.

Patented Sept. 30, 1930 entree.

.pATENT GFFICE Joan nnioxnn, or Los AnoELns, cemronnm, ASSIGNOB or onn nenr TO-REGAN: roman & ENGINEERING COMPANY; or san rmmo, cnnmonmn; A oonrormrron OF CALIFORNIA, AND ONE-HALF '10 F. BBITTEH, JR... OF MAPLE WOOD; NEW

WELL DRILLING AND PUMPING APPARATUS Application filed July 30, 1926. Serial No. 126,002.

My invention relates to improvements in oil Well drilling and pumping apparatus.

The principal object of the invention is to provide improved apparatus which is arranged to adjust itself automatically for operating at maximum capacity without overloading. The well drilling feature of the invention is broadly characterized by the provision of means whereby when the drill-en counters material offering unusual resistance,

the feed of the drill is automatically lessened to the provision of means whereby a gage or indicator is provided for indicating the resistance offered by the material in which the drill may be working, whereby proper functioning of the automatic devices can be ob-- served, to prevent overloading orunderload ing, thus guarding against damage to the equipment or poor economy in operation respectively.

Another object is to provide an apparatus which when installed for drilling a well may with few changes be left in position for carrying on the pumping operation.

A still further object relatesto the provision of pumping mechanism adapted to operate a long stroke pump with minimum power consuinptlon. I v

Further objects relate to various features of construction and arrangement of parts which will become apparent from a consideration of the following s ecification and accompanying drawings,w erein Figure 1 is a broken front elevation of the improved apparatus. 7

plan view of the parts shown in Fig. 2. I

Fig. 4 is a-vertical sectional view taken on line-4'4, Fig.2. j V Fig. 5 is an enlarged vertical sectional View showing the portions of the brake'bands and operating mechanism. 'Fig. dis a vertical 6-6, Fig. 2. I

section taken. on line Fig. 7 is an end elevation, partly in section,

and parts of the spring housing being broken away for thepurpose of clearness:

view taken on line 88, Fig. 7. Fig. 9 is a vertical sectiontaken 9--9,Fig.2. v

Fig. 10 is'a Tbroken side elevation illustrating the apparatus as arranged for-operating an oil pump.

Fig. 11 is a vertical sectional view of the chain, hoist pulley; and associated mechamsm. i i J Fig. 12 is a transverse sectional view of the pulley, taken o'niline l212, Fig. 11. 1 *Fig. 13 is a. vertical section taken on line 1313', Fig. 11."

on line- Fig. 14. isa vertical sectionalfview taken on line 14-44:, Fig. .2;

In the drawings, I

g T as Fig. 8 is an enlarged horizontal sectional have shown a number of I-beams 10 for'supporting the apparatus,

but it will be understood that other supports g may be provided when desirable. Carried .by the beams 10 is a motor,.- indicated generally by numeralll, which. is adapted to drive a horizontal shatl2 whichi1s journaled in bearings 13 and 14., as shown in Figs.

1 and 2.

'lhe frallne or casing 15 of the motor is not r1g1dlyfixed;but is adapted to oscillate in a direction opposite-the direction-of rotationof the shaft 12 due to the counter-force exerted bythe rotor of the motor upon the field coils not shown) on the interior of the casing 15. Achannel member 16 is anchored to the beams? 10 by the bracket 17, or like.

:VVithin the channel of member 16 is a coil spring 18l-between the endsof which is a lug I 19 which exte 1 outwardly from the casing 15. The sprin 18 is revented from sliding circumferentially in t e channel by lugs 16, (see Fig. .8 and exerts pressure on the lug 19 and ten to hold the motor casing in the center sition shown, for instance, in Figs. 2,7 an 8.

When the motor is started, the counterforce exerted by the load will tend to move the casi in a-direction opposite the direction o rotation of the shaft 12 which .ten-

dency to rotate willbe resisted, more or'less, by the sprin 18. If the resistance to the rotation of t e motor is great, the counter- 15 force will be likewise great, and the' casing' 15 will oscillate through a greater arc. By roviding a dial which may be secured, or instance, to the channel member 16, as

shown in Fig. 2, in front of which to the go casing 15 is secured a pointer 21, it is possible to observe thedegree of movement of the casing 15 when the motor is running, which movement will correspond to the torque of the shaft 12, and will, in effect, indicate the load on the motor or the resistance being. of-

fered to the rotation of a drill or pump being operated by suitable connections with the shaft 12. 1 I 1 A tower 22 is provided on the to of which is mounted a. chain operatingmec anism, or

hoisting pulley, indicated generally by 'numeral 23. The mechanism comprises a bevel gear 24 which meshes with a pinion 25 secured to the end ofthe shaft27, the uppen end ofwhich is securtfin' a'bearing 28; The

lower end of shaft 27 Has secured thereto a in Figs. 2 and 4. A driving" inion 37-is set:

cured to the motor casing an rotates therewith, which pinion meshes with thesegmental gear 38 carried by the arms 39- which extend from gear 38 to the ring member 40 havin interior threads which-Cbact with the" threa ed pinion 41 is secured to rotate with the shaft 12, as-shown in Fig. 2, and: upon'rotation of said shaft drives the planetary gear's 42' (see/Fig. 9). The-planets gears; are journaled on extensions or'stu shafts 43. car ried by the web of the drum 44, secured to,

and concentrically mounted with which, is a 3 driving pinion,45.: a

The pinion-45"mesheswith the bevel gear 33, previously described. Thegears 42 mesh wit the internal ring gear 46 on theinterior portion 36 of the sleeve '34. A

of the drum 47 which has a bored extension 48 supported by a journal 14, said drum and extenslon being slidably mounted on the shaft 12. The free end of the extension 48 is provided with'a clutch section 49 which is adapted by means of a-lever 50 to be moved exerted on shaft 12 will cause thecasing 15 of,

the motor to move in a direction opposite to that of the rotation of the shaft: As will be understood, the shaft'52 is driven through the clutch sections 49 and 51 from the extension 48 of the drum 47,- which in turn is driven by pinion 41 secured to shaft 12 by means of the gears 42 and internal ring gear 46. When the unusual resistance or overloading just referred to is encountered, the pinion 41 causes the ears 42 to travel ci-rcumferentially along t e ring gear 46, thereby causing the drum 44 to rotate to which, as

bevel pinion 45. Rotation of the pinion 45 drives the gear 33, which through the intermediary of the clutch 30 rotates shaft 27 in a direction to cause the hoisting pulley 23 to lift the chain 57 and the drill shaft 56, thereby lifting the drill to releasethe overloading on the apparatus.

was previously explained, is secured the Should the drill reach material which ofsegmental gear 38 causing the ring member 40 to turn on the threads 36 and thereby release the-clutch 30 by overcoming the tension of springs 58, whereupon the drill will drop weight of the drill and other suspen ed portions, such as the shaft 56 and chain 57, be-

deeper into the-well by its own wei ht, the.v

'ing suiiicient to cause this movement. It will therefore be seen that the drilling apparatus or'., -decrease the feeding of the rill in proportion to the load thrown upon the drill by the condition of the rock or material in which the drill is working. e

-' As will be seen in Fig. 2, for instance, the

described functions automaticall to increase drum 44 is provided with a brake band 59,

while drum 47 is provided with the brake band 60. Before the drum 44-can rotate to lift thedrill, as described above, the band 59, which normally revents rotation of said drum.- must be re eased. As shown in Figs.

' 3 and 5, the ends of said band 59 have links .ends of the links 61, 61 are pivoted to arms 62'and 62, said arms being secured to shafts 63 and 64, respectively. As shown in Fig. 3, the shafts 63, 64, are journaled in suitable bearings to, the transverse members of the supporting structure.

Pinion 37, which, as above explained is secured to and rotates with the casing 15 of the motor, meshes with the segmental gear 65 which is mounted and is freely rotatable on shaft An arcuate slot 66 is provided in the gear member 65 .into which projects the stud 67 carried byarm 68, which is fixed to the shaft 63. The shafts 63 and 64 are provided with meshing sector shaped gears 69 and 70, respectively, by means of which the rotation of wine shaft is transmitted to the other.

lVhen the load upon the motor becomes so great that the motor casing 15 rotates, as above described, the pinion 37 will be moved counter-clockwise, as viewed in Fig. 5. Ro tation of the pinion 37 causes the segmental gear 65 to move downwardly, as viewed in Fig. 5, and if the movement be sufficient, the upper erid of slot 66 will engage the stud 67 causing the arm 68' to move in a clockwise direction and: swing the arms 62, 62 in opposite directions to release the band 59 on the drum 44. The slot 66 is long enough to permit of suitable fluctuation of the motor casing before the elevating mechanism is thrown into operation. It is only when the load on the motor reaches a point which has been determined previously to be dangerous that the above automatic operation is effected. A pair of set screws 65 may be provided for varying the effective length of the slot 66, whereby the apparatus can be set to release the band 59 at any predetermined load value. As will be understood, the ratio of the gears is such that upon the releasing of band 59, the power of the-motor will be transmitted to pinion 33 for driving the shaft 27 and to thereby lift the drill, as above described, to prevent overloading of the'same.

The band 60, previously referred to, is

normally loose on thed'rum 47 when the drilling operating is proceeding. The ends of the band 60 are provided with links '71 and 72, as shown in Fig. 3, the opposite ends of which links are connected to the arms 73 and 74 which are secured on shafts 63 and 64, respectively.

When the overloading of the motor is excessive or unusual, the gear is rotated a greater distance which, as above described,

causes shafts 63 and 64 to rock the arms 73' 59 only, but should the drill meet with an unusual obstacle, such as to become engaged in a fissure in the rock, such overloading will cause the emergency band 60 to immediately lock drum 47 against rotation.

A third brake band 75 is provided on the disk clutch 30 and is provided with a manually operable lever 76 for preventing the rotation of the shaft 27, when desired, as, for instance, when removing the sections of the drill rod or for connecting the same, or for any other purpose.

As shown in Fig. 2, a pinion 77 is mounted on shaft 12 within the drum 47. The inion 77 is of such a diameter that when the drum 47 is moved to the right, as viewed in Fig. 2, by means of the clutch lever 50, the pinion will mesh with the internal gear 46, in which relation the pinion 45 will be driven directly and at the rate of rotation -'of the shaft 12. This feature is of importhrown out when the apparatus is used for 4 operating a pump or for hoisting or lowering the drill, for instance.

When the apparatus is to be used for pumping, the table gear 55 will be removed.

As shown in Fig. 10, which illustrates the apparatus arrangedfor pumping, one end of thechain 57 is attached to the upper end of the pumprod 79. A spring 80 is positioned between thecollar 81 and a stop member 82, which may be held in position by means of rods 83, or the like. The opposite end of the chain which passes over the joist pulley 23 carries a -counterweight 84. A spring 85 is arranged to be compressed by the weight when the pump rod 79 is in its uppermost position. The hoist pulley 23 comprises stationary shaft 86, which passes through a stationary supporting member 87 which is formed to support a number of planetary gears 88, as shown in Fig: 10. The gears 88 mesh with the teeth 89 on the hub of the gear 24 and also mesh with the internal ring gear 90 0f the rotatable housing member 91. When the gear 24 is driven by the pinion 25 the motion thereof is transmitted through the pinion 89 to the member 91, over which the chain 57 passes. member 91 is provided with the roller teeth 92 suitably journaled in member 91, which rollers provide suitable engagement for the links of which the chain is formed. The

gears 88 and member 91 are preferably pro-- vided with roller bearings 88 and 91, respectivelv.

The 3 The roller teeth 92 are journaled on hollow shafts 92 the inner ends of which are open to oil (not shown) in a reservoir 9 1 formed by the enlarged end of the rotatable housing member 91. The roller teeth 92 are lubri-- cated through oil openings 92 in the shafts pitch of the individual links 57" of which chain 57 is composed, is slightly greater than i the pitch of the rollerteeth 92. As the teeth rotate to lift the chain in a counter-clockwise direction, as viewed in Fig. 12, the initial engagement of the teeth and links of the chain is at points slightly above the lowermost portion of the latter. The further rotation of the pulley brings the teeth and links into such position that the latter slide into full engagement with the teeth, the effect of which is to advance the preceding links slightly with reference to their respective teeth and free them from the same, whereby the lower run of the chain drops freely from the teeth without binding or causing any dragging action.

When the apparatus is used for the pump: ing of oil, it is necessary that the pump rod be given a reciprocating movement and for accomplishing this object, the motor employed is of the reversible type. As shown in Fig. 14, a switch 93 is suitably pivoted, at '94, and has its lower end 95 suitably insulated from the remainder of the switch to provide a bridge for the' contacts 96, 97 and 98. Lugs 99, 100 and 101 are provided on the motor casing as shown in Fig. 14. Whenthe bridge member 95 of the switch lies across the contacts 96 and 97, the motor will be driven in one direction, while when the contacts 96 and 98 have been bridged the motor will operate in the reverse direction. I

If we assume that the bridge 95 closes the circuit through contacts 96 and 98, the motor the normal central position thereof.

casing under sufiicient load will rotate in a clockwise direction, whereby the lug 99 will be engaged by the hook or arm 102 and move the switch memberto the upright or off position. Inasmuch as the current to the motor is cut off in this position of theswitch, the spring 18 will move the motor casingto the casing approaches center position, the intermediate lug 100 will engage the upper extension 93 of the switch 93 and move it to the position where the bridge, 95 will close the circuit through contacts 96 and 97. The motor will thereupon begin to operate in the opposite direction to either lift or lower the pump. shaft, as will be clear. As the load upon the motor causes the casing 15 to oscil.-'

scribed.

1 to the extent necessary for causing the motor casing to move the switch to neutral or ofi position and to mechanically start the rotor in the opposite direction as the spring 18 moves the motor casing for actuating the switch from neutral to one or the other closed positions. The mechanical reversal of the motor just prior to the closing of the motor circuit, prevents damage to the motor windings as will be obvious. In Fig. 10, the pump has just completed the delivery stroke and the descending counterweight 84 has compressed the spring 85. The switch 93 will be .in neutral position and as the spring 85 exerts pressure against the weight 84, the weight of the pump rod, etc. will mechanically reverse the motor, or the load will be substantially balanced as the spring 18, as above described, causes the casing 15 to snap the switch 93 to one of the on positions, whereupon the pump rod will descend. It will be understood that the apparatus provides for a long pressed, the motor overloaded and the switch moved to neutral position. The spring 18 will then move the casing toward the center position whereby the switch will be moved to the other closing position, at;which time the spring 80 and counterweight 84 will have mechanically reversed the motor. The arrangement is such that on the up-stroke the motor lifts only one-half the weight of the column of oil, while the counterweight 84 lifts the other half. I The apparatus is therefore economical of power consumption and operates smoothly.

The spring 85 may be provided with an enclosing support 85, while rails 84, or the like, are arranged for guiding the counterweight 84 in its .up and down movement.

Although the above described improvements may be utilized for drilling and subsequently used in the same setting for pumping, a smaller unit may be used for the pumping operation, if desired, and a motor of the described type may be positioned on the top of the derrick or tower for driving the hoist pulley, the principle of the invention with reference to the pumping features remaining the same.

I have shown the motor casing 15 as provided with an exterior ring gear 104, in mesh with the pinion 105 which'can be operated by' a hand-wheel 106 journaled in bracket 107 mounted on the base members 10. By means of this arrangement, the motor-casing can be oscillated manually for controlling or ophigh. As the pump rod approaches the lowermost position, the spring 80 will be comcrating the brake bands 59 and 60, or the switch 93.

It will be understood, of course, that my where limitations thereto appear in the appended claims.

What I claim as new is:

1., .l Vell drilling apparatus comprising a drill, a} motor for operating said drill and having a casing oscillatable through a lime itcd arc, and means controlled by the movement of said casing for advancing or retracting the drill.

2. "Well drilling apparatus comprising a rotatable drill, and an electric motor for driving the same, and feeding means for said drill, said motor having its field arranged to move in response to the load on the motor for controlling said feeding means.

3. Well drilling apparatus comprising a drill, driving means therefor comprising a motor having a casing, means for elevating said drill from working position, and means responsive to the predetermined load of said drill for automatically actuating said elevating means for raising said drill to prevent overloading, said means comprising said motor casing. I

4. ell drilling apparatus comprising a drill, driving means th erefor comprising a motor having a relatively movable casing, means for regulating the elevation of said drill during the operation thereof, and means comprising saidcas ing responsive to the load of said drill for automatically actuating said regulating means for causing said drill to operate at predetermined maximum capacity.

5. l/Ve1l drilling apparatus comprising a drill shaft, a motor having a relatively movable casing, driving means from said motor to said shaft, and means for raising and lowering said shaft, said means comprising automatically operated power take-oil mechanism associated with said driving means and being controlled, by the movement of said casing.

6.- VVell drilling apparatus comprising a drill shaftya motor having a relatively movable casing, driving means from said motor to said shaft, means for raising and lowering said shaft, power take-ofi' mechanism associated with said driving means, and means responsive to the load on said motor for interrupting said driving means and automatirally actuating said powertake-off mechanism for operating said means for raising second shaft for driving said drill, automatic means for making and breaking a driving connection between said shafts, a third shaft for raising'said drill, and automatiomeans responsive to the load on said motor for driving said third shaft from said first shaft.

8. The combination with a motor having a casing adapted to move in response to the load on said motor, of a drill, drill elevating means, and mechanism controlled by the movement of said casing for efiecting a driving connection of said motor with said drill and said drill elevating means.

9. The combination with a motor having a relatively movable casing, of a drill, a drill elevating means, clutches for establishing driving connections between said motor and said drill and elevating means, and means comprising said casing responsive to the load of said motor for controlling the operation of said clutches.

10. Well drilling apparatus comprising a motor,a casing adapted for movement by the counterforce exerted by the motor under the influence of the load thereon, drilling apparatus actuated by said motor, and means actuated by the movements of said casing for controlling the actuation of said drilling apparatus.

11. Well drilling equipment comprising a drill and a shaft, a motor havin a shaft, a set of gears on said motor shaft, rill elevating means, and means responsive to the load on said motor for effecting a driving engagement between said gears on said motor shaft and said drill shaft or between said gears and said drill elevatin means, said responsive means comprising tie casing of said motor.

12. Apparatus of the class described comprising a motor having a shaft, a drum mounted for rotation on said shaft for driving a suitable drill, said drum being pro vided with an-internal gear, a second drum on said shaft provided with a plurality of gears meshing with said internal gear, a driving pinion on said shaft for actuating said gears, means holding said second drum stationary under'normal conditions of operation, and motor actuated means for releasing said holding means under abnormal conditions whereby the driving of said drill is interrupted.

13. Apparatus of the class described comprising a motor, a shaft driven thereby, a drill shaft, transmission mechanism for transmitting power from said motor driven shaft to said drill shaft, a clutch associated with said transmission, said clutch being open during normal drilling operations, means adapted to be driven by said clutch when closed for raising said drill shaft, and means responsive to the load on said motor for automatically I ,operating said transmlssion mechanism to interrupt the driving of said drill and for closing said clutch to raise said drill shaft to prevent overloadin of the apparatus.

14. Apparatus o the class described comprising a motor having a shaft, drill operating mechanism adapted to be driven thereby, drill lifting mechanism adapted to be opera-- tively connected automatically to said shaft for actuation thereby, said lifting mechanism comprising a chain, a tower, a hoist pulley on said tower over which said chain passes, one

end of said chain being attached'to the drilldrums, brake bands therefor, one of said bands holding one of said drums stationary and the other permitting rotation of the other drum during normal drilling operations, drill elevating mechanism associated with said normally stationary drum, and means for automatically reversing the normal position of said bands upon the overloading of the motor whereby the driving of said drill is in:

. terrupted and the actuation of said drill eleto normal position.- g

18. Apparatus of the class described, comvating mechanism is effected through the said associated drum.

16. Apparatus of the class described comprising a motor havin a shaft, a drill, power transmission 1 mechanism for driving said drill, said mechanism comprising a pair of drums, brake bands therefor, one of saidbands holding one of said drums stationary and the other permitting rotation of the other drum during normal drilling operations, drill elevating mechanism associated with said normally stationary drum, means for automatically reversing the normal position of said bands upon the overloading of the motor whereby the driving of said drill is interrupted andthe actuation of said drill elevating mechanism is effected'through the said associated drums, said means comprising. a movable motor casing, gears actuatable thereby, a shaft driven by said gears, and arms on said shaft for operating said brake bands.

17. Well drilling apparatus comprising a motor having an oscillatable portion responsiveto the load of the drill, drill feeding means associated therewith, means controlled by said portion for regulating said feeding means, and means resisting such movements of said portion and tending to urge the same prising in combination a drill, a motor, driving connections betweensaid motor and drill, drill elevating means, means for automaticalinterrupting the driving of said drill and l fbr actuatmgsaid. elevating means at p'redeterniined drill load, said interrupting means comprising a planetary gear supporting drum, and an automatically controlled brake band for controlling the actuation of said drum. I

19. Apparatus of the class described, comprising in combination a drill, a motor, a

shaft driven thereby, driving means between said shaft and drill, said means com rising a gear, a pinion on said shaft, a set o planetary gears driven by said pinion and meshing with said gear, .a. rotatable member car-- rymg said gears, means for holding said ble relatively thereto, a drill adapted to be driven from one ofsaid drums, a drill elevating mechanism adapted to be actuated from sald other drum, and a power take off mechanism within said drums for transmitting power from said shaft to either of saiddrums.

21. In combination, a motor, a shaft driven thereby, a pair of drums on said shaft rotatable relatively thereto, a drill adapted to be driven from one of said drums, a drill elevating mechanism adapted to be actuated from said other drum, and a power take-off mechanism for transmitting power from said shaft' to either of said drums, each of said drums being provided with an automatically controlled brake band.

22. In combination, a motor, a shaft driven thereby, a pair of drums on said shaft rotatable relatively thereto, a drill adapted to be driven from one of said drums, a drill elevating mechanism adapted to be actuated from said other drum, load responsive means, and a power take-ofii' mechanism for-transmitting power from said shaft to either of said drums, said take-off mechanism being controlled by said load res onsive means.

23. Incom ination, a motor, a shaft driven ble relatively thereto, a ringvgear on the first I of said drums, a set of planetary gears on the second drum in mesh with said ring gear,

a second gear rotatable with said shaftand adapted todrive said planetaryfgears, a brake band on said second drum, a drill driven from said first drum, drill elevating mechanism actuatableby said'second drum, and load responsive means for releasing said brake band, whereby saidsecond drum is free to rotate and to actuate said drill elevating mechanism.

24. In combination, a motor, a shaft driven thereby, a drill, drill elevating apparatus, power take-oil mechanism for driving said drill and elevating apparatusfr'om said shaft, load responsive means for controlling said power-take-off mechanism, said elevating apparatus comprising a clutch, and means actuatable by said responsive means for releasing said clutch at a predetermined reduction of said load whereby said drill is movableinto full load drilling position.

25. In combination, a motor, a shaft driven thereby, a drum on said shaft rotatable relatively thereto, a drill adaptedto be driven from said drum. a. normally stationary second drum on said shaft carrying a set of planetary ,o ears. a pinion rotatable with said shaft for driving said gears. a ring gear on said first drum meshing with said gears for actuating said first drum during normal drilling operations, drill elevating mechanism adapted to be driven by said second drum, said'mechanism comprising a clutch, a brake for said second drum. and load responsive means for releasing said brake upon predetermined over-load, whereby said second drum and elevating means are actuated.

26. In combination, a. motor, a shaft driven thereby, a drum on said shaft'rotatable relatively thereto, a drill adapted to be driven from said drum. a normally stationary second drum on said shaft carrying a set of plane tary gears, a pinion rotatable with said shaft for driving said gears, a ring gear on said first drum meshing with said gears for ac-- tuat-ing said first drum during normal drilling operations. drill elevating mechanism adapted to be driven by said second drum, said mechanism comprising a clutch, a brake for said second drum, and load responsive means for releasing said brake upon predetermined over-load, whereby said second drum and elevating means are actuated. said responsive means automatically setting said brake and releasing said clutch whereby the resumption of normal drilling operations is effected upon reduction of said load.

27. In combination, a motor, a shaft driven thereby, a sun-gear on said shaft, a drnmrotatable relatively to said shaft and being provided wth a set of planetary gears driven by said sun-gear, a pinion rota-table with said drum, drill elevating mechanisindriven by said pinion. a second relatively rotatable drum on said shaft provided with a ringgear meshing said planetary gears whereby said second drum is driven during normal drilling operations, a drill operatively connected to said second drum, a. brake having bands for each of said drums. the brake for said first drum being in set positlon' to hold said drum stationary. and=the brake of said seconddrurn being released during normal drilling operations, and load responsive means operatively associated with said bands for reversing the relations of said brakes upon predetermined overload. whereby said drilling operation is stopped and the drill elevated to release the overload thereon.

28. In combination, a. motor, a shaft driven thereby, a relatively rotatable drum thereon, a reduction gearing for driving said drum from said shaft, a drill actuatable from said said shaft, a drill actnatable from said shaft,

drill hoisting and lowering mechanism actuatable by said drum, andaneans for locking said whereby said drum is driven at the speed of said shaft.

30. In combination, a motor, a shaft driven thereby, a drum relatively rotatable thereon,

reduction gearing for driving said drumfrom said shaft, a drill actuatable from said shaft, drill hoisting and lowering mechanism actuatable. by said drum, means for lockingsaid gearing whereby said drum is driven at the speed of said shaft, said means comprising a gear. and means for causing the same to mesh with one of said other gears.

31. In combination, a motor, a shaft driven thereby, a drum relatively rotatableithereon, reduction gearing for driving said drum from said shaft. a drill -actuatable from said shaft. drill hoisting and lowering meclr anism actuatable by said drum, means for locking said gearing whereby, said drum is driven at the speed of said shaft; said means comprising a gear, and means for causing the same to mesh with one of said other gears. said last named means comprising a gear carrying member slidable axially of said shaft.

In combination, a motor, a shaft driven mitted from said shaft by said gears to said drum for driving said drill.

33. In combination, a motor, a shaft driven thereby, a relatively rotatable drum on said shaft, adrill adapted to be driven from said drum, a ring gear carried by said drum, 3. second relatively rotatable drum on said shaft carrying a set pf planetary gears in mesh with said ring gear, a sun-gear rotatable with said shaft for driving said planetary gears, and means for holding said second drum staond drum-station ary whereby power is transtionary whereby power is transmitted from said shaft by said gears to said drum for driving said drill, said holding means comprising a brake band on said drum.

34. In combinatiom'a motor, a shaft driven thereby, a-relativ'ely rotatable drum on said shaft, a drill adapted to bed'riven from said drum, a ring gear carried bysaid drum, a

second relatively rotatable drum on said shaft carrying a set of planetary gears in mesh'with said ring gear, a sun-gear rotatable'with said shaft for driving said planetary gears, means for holding said second drum .stationary whereby poweris transmitted from said shaft by said gears to said drum for drivin said drill, said holding means comprising a rake band on said drum, and load responsivev means adapted to release said brake band upon predetermined overload for interrupting the drilling operation.

35. Apparatus of the class described comprising a motor, a shaft driven thereby, a drill, means for transmitting power from said shaft to said drill, drill elevating mechanism, means for transmitting power from said shaftto said mechanism, said means comprising a clutch, and load responsive means for controlling the actuation of said last named means, said load responsive means being'operatively associated with said clutch whereby the latter is released upon removal of said.

overload to thereby automatically maintain said drill in position for substantially maxi-' thereby,'a pair of relatively rotatable drums on said shaft, a drill actuatable by one of said drums, drill elevating mechanismv actuatable by the second of said drums, planetary gear mechanism. associated with said drums for driving the latter from said shaft, and load responsive means for controlling the driving of said drum by said shaft, said means being adapted to permit the actuation of said elevatling mechanism to reduce overloads on said dri l.

37. In combination a motor, a shaft driven thereby, a pair of relatively rotatable drums on said shaft, a drill actuatable by one of said drums. drill elevating mechanismactuatable 1 by said second of said drums, planetary gear I responsive means for controlling the driving vating mechanism to reduce overloads on said mechanism associated with said drums for driving the latter from said shaft, and load of said drum by said shaft, said means being adapted to permit the actuation of said eledrill, said responsive means serving also to interrupt said first drum upon sudden overload. j

38. In combination, a motor, ashaft driven drill elevating mechanism comprising a clutch, a second drum for effecting a driving connection between said shaft and mechanism, a brake band on said first drum permitting rotation thereof during normal drilling operations, a band on said second drum holding the same stationary during normal drilling operations, and load responsive means operatively associated with said band and clutch whereby said second drum bands and clutch for automaticall and clutch serve to maintain said drill under predetermined maximum load conditions,

said first band-being operable by said responsive means to stop rotation of the drill on sudmechanism, and a clutch operating means actuatable by said responsive means to release said clutch for automatically feeding said drill toward the work.

40. In combination, a motor, a drill driven thereby, drill feeding and elevating mechanism comprising a clutch', load responsive -means for controlling the operation of saidmechanism, and a clutch operating means actuable by said responsive means to release said clutch for automaticall feeding said drill toward the work, said 0 utch operating means comprising a member having a threaded connection with said clutch and being movable in said threads by said responsive means.

41. In combintion, a motor, a .drill operable thereby, a drill elevating and feeding mechanism comprising a clutch having a depending threaded sleeve, load responsive means comprising areciprocable member, a gear actuatable thereby, and a clutch operating member having teethmeshing with said gear and being adapted to coact ,with said threaded sleeve in releasing and closing said clutch.

42. In combination, a motor, a drill driven thereby, a drill 'elevatin and feeding mechanism comprisin a clutc a drum actuatable by said motor or driving said mechanism through said clutch, a brake band on said clutch, and load responsive means associated with said band and clutch, whereb said clutch is released for feeding said dIlll and said band is'released to permit said drum to actuate said mechanism ing.

43. In combination, a motor, a drill, means for drivin the latter from the former comprising a rum, a brake band therefor, drill elevating and feeding mechanism comprising a clutch, a second drum driven by said motor adapted to actuate said mechanism, a band for said seconddrum, and load responsive means operatively connected with said controlling the actuation of said drill an thefeedto prevent overloading 'of the same to the work.

44. In combination, a motor, a drill, meansfor. driving the latter from the former comprising a drum, a brake band therefor, drill elevating and feedin mechanism comprismg a clutch, a secon drum driven by said motor adapted to actuate said mechanism, a

band for said second drum, load responsive means operatively connected with said bands and clutch for automatically controlling the actuation of said drill and the feeding of the same to the work, said connections comprising a gear actuatable by said responsive means, levers movable thereby for controlling said bands, and a clutch operating member having a toothed sector in mesh with said i gear.

45. In combination, a motor, a rotatable drill, means for driving the latter from the former comprising a drum, a brake band therefor, drill elevating mechanism, a second drum actuatable by said motor for driving said mechanism, a brake band for said second drum, a'load responsive member, and

means for actuating said bands from said second drum, a load responsive member, and

means for actuating said bands from said member, said means comprising a gear driven by said member, a toothed member meshing with said gear and operatively connected to said bands, said toothed memberbeing adjustable for varying the load range of said drill.

- 47. Apparatus of the class described comprising a'motor, a drill, means for driving the latter from the former comprising a drum, a brake band therefor, drill elevating whereby said first drum is rotated during normal drill loads andisaid second drum is rotated upon overloading to operate said winding means to elevate said drill, said clutch being opened upon predetermined underloading to permit said drill to gravitate toward the work.

In testimony whereof, I have subscribed my name.

JOHN BRICKEN.

gear and operatively connected to mechanism, a second drum actuatable by said motor, a band for said second drum, a pair of shafts connected to said bands for operating the same, said shafts being operatively connected whereby rotation of one effects the rotation of the other, a lever attached to one of said shafts, a load responsive member, a gear actuatable thereby, and-a member actuatable by said gear and engageable with said lever for actuating the same upon predetermined maximum and minimum loads whereby said shafts are rotated and said bands operated to control the elevating and drilling operations.

48. 'Apparatus of the class described, comprising a motor, a rotatable drill, means for driving the latter from the former comprising a drum provided with a brake band, a

drill elevating and feeding mechanism com- I prising a tower having winding means thereon, a flexible member supporting said drill from said windin means, a second drum provided with abra e band and adapted to be actuated by said motor, power transmitting means from said second drum to saidwinding means, said transmitting means comprising a clutch, a load responsive member operatively associated with said bands and clutch CERTIFICATE OF GORREGTIGN.

Farm No. 1,716,779, Granted. September '30, 1930, to

101m nmcxm It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 7, line 48, claim 27, after the word "meshing" insert the word'with,- andin line,78, claim 29, after "said" first occurrence, insert the word gearing; and thet the said Letters Patent should be read with these corrections therein. that the same may cenform to the record of the case .inthe Patent Office.

" Signed and sealed this 25th day of November, A. D. 1930..

M. J. Moore, 7 (Seal) 7 Acting Commissiomi of. Patents.

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