US1117806A

US1117806A - Core drilling and hoisting machine.

Info

Publication number: US1117806A
Application number: US61664111A
Authority: US
Inventors: Edmund Dalgleish
Original assignee: PAUL J DIEMUNSCH; THOMAS H DOBBINS
Current assignee: THOMAS H DOBBINS; PAUL J DIEMUNSCH
Priority date: 1911-03-24
Filing date: 1911-03-24
Publication date: 1914-11-17
Anticipated expiration: 1931-11-17

Description

P. J. DIBMUNSGH, T. H. DOBBINS & E. DALGLEISH.

com: DRILLING AND HOISTING MACHINE.

APPLICATION TILED MAILM. 1911- 1,117,806,, Patented Nov. 17, 1914.

5 SHBETBSHEET 1.

0R8 p I W 7 Xfl 7/ Pm ATTORNEYS.

P. J. DIBMUNSGH, T. H. DOBBINS & E. DALGLEISH. GORE DRILLING AND HOISTING MACHINE.

APPLICATION FILED MAILZLL 1911.

1,11%806, Patented Nov. 17, 1914.

5 SHEETS-SHEET 2.

ATTORNEYs.

P. J. DIEMUNSGH, T. H. DOBBINS & E. DALGLEISH. GORE DRILLING AND HOISTING MACHINE. APPLICATION FILED man, 1911.

1 ,1 1 7,806,, Patented Nov. 17, 1914.

5 SHBETSSHEET 3.

W QWWW I 7 I ATTORNEYS P. J. DIEMUNSGH, T. H. DOBBINS & B. DALGLEISH. GORE DRILLING AND HOIYSTING MACHINE.

APPLICATION FILED MAR.24, 1911.

1,1 17,806,, Patented Nov. 17, 1914.

5 SHEETS-SHEET 4.

VIII/11m WITNESSES X741 777% MM Arrows/Err.

- INVENTORS P. J. DIBMUNSCH, T. H. DOBBINS & E. DALGLEISH. GORE DRILLING AND HOISTING MACHINE.

APPLICATION FILED MAR.24,1911- Patented Nov. 17, 1914 5 SHBETS-SHEET 5.

ATTORNEY WENT orrrcn.

?AUL J. DIEMUNSCH AND THOMAS H. DOBBINS, OF NEW YORK, N. Y., AND EDMUN DALGLEISH, 0F CLEVELAND, OHIO; SAID DALGLEISH ASSIGNOR T0 SAID DIE- MUNSOE AND DOBBINS.

CORE DRILLING AND HOIS'I'ING MACHINE.

Specification of Letters Patent.

Patented Nov. 17, 1914.

Application filed March 24, 1911. Serial No. 616,641.

To ail whom it may concern:

Be it known that we, PAUL J. DIEMUNSCH and Tnonms H. DOBBINS, of the city, county, and State of New York, and EDMUND DAL- (.Iaazsil, of the city of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improve ments in Core Drilling and Hoisting Machines, of which the following is a full, clear, and exact specification, such as will enable others skilled in the art to which it appertains to make and use the same.

()ur invention relates to improvements in core-drilling machines adapted not only to operate drills provided with diamond points, but particularly adapted to that class of drilling which has now become well known under the name of shot drilling wherein chilled shot are used asthe cutting medium,

in place of diamond points. By this method of drilling, holes are bored andicores extracted for various purposes, such as Artesian wells, in building foundations, mine prospecting, etc. The depth of the hole may vary from a few feet up to 2000 feet or more, the diameter of the cores-extracted varying from a few inches to thirty inches or more.

One of the objects of our invention is to provide a powerful apparatus, so compact in its arrangement of parts that while affording as much or greater power, it requires much less space than any other similar apparatus as heretofore constructed, which is an obvious advantage particularly where the apparatus is used in tunnels or other mine workings.

Another object which we accomplish by our invention is the placing of the heavier parts of the apparatus on a lower plane relative to the lighter parts, with the result not only that the drill head is more convcniently located, for operation, but avoids the necessity of building the apparatus up on a temporary foundation and platform--- the permanent foundation constituting the only foundation required-and in moving the apparatus from place to place. the heavier parts being below, risk of accident. which in former constructions resulted from top-heaviness. is avoided.

Another objectwhich we attain by placing the heavier parts on a low level. is to decrease the vibration of the apparatus,

which is very important since such vibration is frequently the cause of breakage of drillrods and stoppage of the work, if not abandonment of the hole being drilled.

Dar improved machine is, furthermore, particularly designed to assume at all depths of cut a uniform and readily controlled pressure of the cutting bit on the material to be cut, whereby the best cutting efliciency is attained without requiring any controlling power other than the strength of he attendant and the drill driving mot r. To this end, the apparatus constructed in accordance with the invention is provided with two systems of control which are independent of one another and which can be employed together or independently and neither of which interferes with the operation of the other or with the operation of the machine at those times when one system of control is being used to the exclusion of the other. Each system is equipped with a convenient operating lever or levers capable of manipulation by a single attendant, the one-system being primarily adapted to em able the attendant-by his own strength to control the pressure of the cutting bit during the initial portion of the cutting operation up to the time when the weight of the drill rods and bit is sufiicient'to afford the necessary pressure; and the other system being adapted by the application of the power drill driving motor, through, the hoisting drum, to control the pressure after the weight of the drill rods and bit exceeds the pressure desired at the cut. Furthermore, each system of control is adapted to enable the attendant to slightly lift the bit in those cases, which often occur in shot drilling, where the bit becomes jammed in the cut or the shot are not well distributed. This lifting of the bit serves to free the tool or to A-A of Fig. 2; Fig. 4 is lOO in Fig. 2; Fig. is a vertical section of a portion of the drill mechanism; Fig. 6 is a vertical sectional view of part of the mechanism for driving and braking the hoisting drum, taken on line BB of Fig. 2; Fig. 7 is an enlarged detail side elevation of the ratchet pressure or shift devices for the drill.

spindle; Fig. 8 is an elevation of the hoist brake lever; Fig. 9 is a view partly invertical section and partly in vertical elevation on line DD of Fig. 2; Fig. is a vertical section on line CC of Fig. 9; Fig. 11 is a cross-section of the drill spindle and bearing on line E-E of Fig. 5; and Fig. 12 is a broken detail on line FF of Fig. 2.

Similar numerals of reference indicate similar parts throughout the several views.

In the drawings, 1 indicates a permanent wooden foundation preferably of the skid type consisting of longitudinal and transverse supporting beams 1 1 suitably bolted together as at 2 by means of long gage rods and nuts.

3 indicates a metal bed plate secured to the foundation 1 by bolts 3 passing through slots 3*. Mounted upon the bed-plate 3 are obliquely extending

end frames

4, 4 upon which are provided, at the upper left-hand side thereof bearings as indicated at 5 having mounted therein prime mover shaft 6 provided with crank arms 7 which have in turn mounted thereon

piston arms

8, 8 connecting at their lower endswith piston heads of Well known type reciprocating in

cylinders

9, 9, and communicating by means of suitable slide valves (not shown) with steam chest 9 to which pressure fluid is admitted through supply pipe 10 the fluid exhaust pipe being shown at 11. The prime mover shaft 6 has mounted thereon power transmission gear 12 meshing with a simi-.

lar power transmission gear 13 on the drill d ie shaft 14 one end thereof being mounted in a bearing indicated at 15 on the side frame 4 and at'its other end having its bearing in a back-plate, which will be hereinafter referred to.

The gear 13 is primarily mounted on a sleeve 17 being keyed thereto as shown at 17 which is provided at its outer end with a jaw clutch surface 18 adapted to receive clutch member 19 which is slidably mounted on the shaft 14 and is controlled by the clutch lever 20. Said clutch member 19 is splined to the shaft 14, as indicated at 21, whereby when the member 19 is engaged with the clutch jaws of the sleeve 17 rotary motion may be imparted to said shaft through the gear 13.

Formed integral with the sleeve 17, or keyed thereto, is a spur-gear 2-3 which is adapted to engage or mesh with a gear wheel,

24 on the hoist drive shaft 25 to which said gear 24 is keyed as indicated at 26. The

shaft 25 is mounted in bearings 27 mounted on the

frames

4, 4. Loosely mounted upon the shaft 25 is a hoisting drum 28, having its journals at 29, 30, which drum, at one side thereof, is formed with an annular driving and brake flange 31, secured to the web 32 of the hoisting drum, by a series of bolts 33. Said driving and brake flange is provided, on its inner face with an internal gear 34. Keyed to the shaft 25 is a pinion 35, meshing with a plurality of power distributing pinions 36, 37, 38, which in turn mesh with the internal gear 34 of the driving and brake flange 31. Also loosely mounted upon the shaft 25 adjoining the hoisting drum 28 is a friction drum 39 pro,- jecting through the core of which, and rigidly secured thereto, are

short shafts

40, 40*, 40", the outer ends of which form bearings for the power distributing pinions 36, 37, 38, the function of the latter being to provide for evening and distributing the transmission of power from said shaft 25 to the driving and brake flange 31 of the hoisting drum 28.

42, 42 indicate hand-lever actuated shafts having their outer endsmounted in

bearings

43, 43 on the end frames 4, 4, and their inner ends on intermediate bearing 43". Mounted upon the shaft 42 is the hoist brake operating lever 44 and upon the shaft 42 is the friction band operating lever 45.

The friction drum 39 has formed on its outer periphery a channel 46 adapted to receive friction band 47 which may be made of any suitable material, one end of said friction band 47 being fastened to one end of a short lever arm 48 rigidly secured to the hand-lever actuated shaft 42 and the other end fastened to the outer end of said arm by means of the pin 49 secured thereto as at 50. The outer periphery of the driving and brake flange 31 of the hoisting drum has also formed therein a channel 51 adapted to receive brake band 52 one end 53 being fastened to one end of the short lever arm 54 keyed to the lever actuated shaft 42-, and the other end thereof being fastened to the pin 55 mounted to slide in bearing 56 on the other end of the short lever arm 54 the lower end of pin 55 beingso arranged as to project beneath said bearing 56 a suitable distance to receive a springcushion 57 held in place by means of head 58.

The operation of the hoisting drum, differential brake and friction drum is as follows: Power is transmitted from the shaft 25 to the pinion 35 and, through it, to the

pinions

36, 37, 38, which latter, when fric tion is not applied to the friction drum 39, turn idlv on the internal gear 34 of the dri ing and brake flange 31, carrying therewith, by means of the

short shafts

40, 40 40, the loosely mounted friction drum 39, in which operation the hoisting drum 28 remains stationary. When, however, sufficient friction is applied by .means of the hand lever 45, shaft 42 and friction band 47 to the friction drum 39, said friction drum remains stationary and the

pinions

36, 37, 38 positively engage the inner toothed surface 34 of the hoisting drum brake flange 31 and thereby drive the hoisting drum.

The

journals

29, 30 of the hoisting drum 28 are lubricated by any well known type of lubricating feed as at receiving its supply from any suitable source of lubricant supply. At one end of the shaft 25 is provided a winch-head 61 for use when occasion requires an additional hoisting or propelling medium.

Referring now to the drill-head and the means for feeding and rotating the drill spindle. Rigidly secured to the frame a is a back-plate 65, of general annular outline,.

having rearwardly extending flanges 65 bolted at 65 to the frame 4, and a laterally extending curved flange 65 through which and into the frame 4 are projected bolts 65 as additional fastening means. The back plate 65 is formed with a rearwardly projecting annular flange 66, provided with a series of longitudinal bolt-holding recesses as hereinafter described.

Snugly but rotatably mounted upon the front face of the back-plate 65, and lying against, and partially supported by an annular shoulder formed thereon, as indicated at 67, is an annular swivel plate or ring 68 which is provided centrally with an annular groove or raceway 69, which is shaped to receive therein the heads 70 and a portion of the shanks 71 of a series of swivelplate holding bolts, indicated in whole at 72, and provided with tightening nuts 73, these bolts being inserted through a lateral passage-way 73 atone side of the swivel plate and communicating with the annular groove 69. It will be noted that when the nuts 73 are loosened, the swivel plate 68 is free to be turned, said bolt heads and shank portions sliding freely in the annular groove 69, and when the nuts 73 are tightened,said plate will be held rigidly and securely against any movemnt whatsoever, by the bolt heads pressing the inner face of the swivel plate tightly against the front face of the back-plate 65.

The swivel plate 68 is formed on one side with a laterally extending lug 77, perpendicularly recessed, and at the opposite side said plate is formed with a pair of outwardly extending horizontally disposed lugs 7 8, vertically spaced apart and vertically recessed, between which lugs is received one end of an eye-bolt 79, through the eye of which and through the vertical recesses in said lugs 7 8 passes a bolt 80, which holds the eye-bolt 79 securely in position. Pivotally mounted upon the swivel plate 68 is a swing gate indicated in whole at 81, which spindle is movably secured to the swivel plate hingelug 77 by bolt 82,*passing through vertical recesses in the swing gate hinge-arms 83, and through said swivel plate hinge-lug 7 7 Formed integrally with said hinge-arms 83 are guides 84:, for the drill pressure and feeding racks to be presently referred to. Said rack guides are connected by

webs

85, 85", the web 85 having formed integral therewith a drill spindle bearing 86, and the web 85 having formed integral therewith a drill spindle and gear bearing 87, said rack guides, webs and bearings being preferably formed integral with an annular face-plate 88, the rear face of which is adapted tolie flush with the front side of the swivel plate 68.

Projecting side of the face-plate 88 are a pair of lugs 89 vertically spaced apart betweenwhich is received the outer end of the bolt 79, having the threaded end thereof projecting sufiiciently beyond the front edges of said lugs to receive a threaded nut 90, which when tightly secured in position against said lugs, locks said swing gate rigidly to the swivel plate, so that the whole will form a very strong and rigid support for, the working parts now to be described.

The front end of the shaft 14 which has its bearing within a bushing 91 in the journal flange 92 of the back-plate 65 has keyed thereto a beveled gear 93 which is adapted to mesh with a beveled, gear 94 mounted and adapted to rotate upon bearing 87 before referred to, and thereby impart rotary motion to the drill spindle 95. It will be seen from Fig. 5 that the gear 94 rests upon a'washer 96 and is keyed at 96 to a gear-sleeve '97, which turns in a bearing-bushing 98, between said gear-sleeve 97 and the inner surface of the bearing 87.

Above the parts just described the drill passes through a drill spindlebearing 86 where the drill spindle is provided with a double-shouldered sleeve 99, the lower shoulder of which is threaded as indicated at 100 and is adapted to receive thereon an internally threaded sleeve nut 101 and lying between the shoulders of said eeve and within the bearing 86 is a bushing 102. By referring to Fig. 11, it will be seen that the drill spindle 95 is formed with straight sides as indicated at 103, and rounded corners as indicated at 104, and that the drill spindle sleeve 99 is formed with straight walls 105 rounded out as at 106 in such manner as to aflord clearance for. the vertical movement of the drill spindle 95 within said sleeve, but preventing rotary motion independent of the spindle sleeve 99, both the drill spindle 95 and the sleeve 99 being free to rotate within the bushing 102. The inner walls of the spindle-gear sleeve 97 are of the same contour as just ascribed to the sleeve laterally from the right-hand i "its 99, and, as before stated, while the drill spindle is free to move therein in a vertical direction, it nevertheless, owing to the construction just referred to, has imparted to it rotary motion from the sleeve 97 and gear 94.

Vertically movable within the guides 84 are two

slide rods

107, 107", having their forward faces provided with rack teeth to form a feeding, bracing and pressure transmitting mechanism for the drill spindle 95. The upper ends of said rack rods, 107, 107 are rigidly secured by

nuts

108, 108 to a yoke 109. Said yoke 109 is formed with a central recess through which projects the upper end of the hollow drill spindle 95, which, as will be more clearly seen in Fig. 5, is threaded at 110 to a hollow waterswivel cap 111, the lower portion of which rests upon an annular divided ball-bearing casing 112 mounted upon said yoke 109. At the under side of the yoke is a similar divided ball-bearing casing 113, supporting which at its under side is a collar 114 keyed at 115 to the drill spindle 95. Resting loosely within the recess in the water swivel cap 111 is a short water swivel spindle 116 threaded at its upper end to receive a water pipe 117 (Fig. 1), which will be connected to a force pump or any other suitable source of water supply The lower end of the water swivel spindle 116 is provided with an annular packing 118.

It will be observed that the yoke 109 is free to be moved vertically by means of rack rods 107 107*,and that the drill spindle 95 and the water swivel cap 111 are free to revolve upon the ball bearings 112, 113, while the water swivel spindle 116 and water pipe 117, will not have rotary movement but W111 be capable of vertical movement, with the parts just described.

Attached to outwardly extending lugs 119 forming a part of the yoke 109 is a bail 120 to which may be attached one end of the hoisting rope 121, the other end of which will be connected to the hoisting drum 28, after passing over a sheave on a suitable derrick (not shown).

Mounted inbearings

122, 122*, secured to the front side of the face-plate 88, is a shaft 123, which at one end is provided with a spur gear 124, adapted to engage the rack gear 107, and at the opposite end is provided with a similar gear 125, adapted to engage the rack gear 107". Also mounted upon the forward side of the face-plate 88 is a bearing 126 supporting a shaft 127, which at one end is provided with a spur pinion 128, which is adapted to mesh with and drive the spur gear 125. The outer end of said shaft 127 is provided with a toothed surface 129, whereby step by step rotary movement is imparted to the shaft 127 through the lever device indicated in whole at 130. Said lever device consists of a movable hub member 131, loosely mounted upon the outer end of the shaft 127, through which and through thehandle 132 projects a rod 133, the lower end of which is held in engagement with the toothed surface 129 of the shaft 127 by means of a spring 134, hearing at one end against a shoulder 135 within said handle 132 and at the other end against a collar 136 secured'to said rod. Said rod at its outer end is provided with a knob or hand-hold 137. v Under the pressure of the spring, said rod is normally held in engagement with the toothed surface 129, and after moving said lever a step forward or backward, the operator, if he desires to continue motion of the shaft 129, relieves the pressure of the spring 134 by an upward pull on the knob 137 thereby withdrawing the lower end of the rod 133 from the toothed surface 129 and moves the lever in the reverse direction as desired,

.in order to get a new hold on the toothed surface of the shaft 127. By this device very great power may be applied to the

rack rods

107, 107" in either direction. a

Extending logitudinally of the bed-plate indicated at 3 and secured thereto we provide a bar 138, having a toothed surface 138 and transversely of said bed-plate we provide a transverse shaft 139, having its end bearings in the side frames 1*. At the center ofsaid shaft 139 is keyed a gear 140 which is adapted to mesh with the rack gear 138. At the outer end of the shaft 139 is provided a lever 14:1 keyed to said shaft and having a handle 142, whereby rotary motion may be imparted to said shaft and said gear 140 and rectilinear motion to said rack 138, and through the latter moving the entire apparatus forward and backward as becomes necessary in the operation of various sizes of drill tools. It will be seen from Fig. 3'that we provide longitudinal slots 3 in the bed-plate 3 allowing for such movement, simply requiring the loosening of the nuts shown on the bolts '3.

It will perhaps be well topreface our description of the operation of the apparatus by the statement that in' these shot drilling operations a casing is first driven to bed-rock, and the loose soil therein cleaned out by rotating a pipe known as the core barrel, one end of which lies within the casing referred to and'the other end connected to the drill spindle, and water being forced through the drill spindle and core barrel; when one length of easing has been driven and cleaned out, the core barrel is disconnected from the drill spindle,

the drilling machine moved back from the to'the drill spindle,

through the drill spindle, the core barrel rotated, as before, and this section cleaned out, this soil clearing operation being continued until bed-rock is reached. Thereupon, the drill head being in position over the hole to be drilled, a drill rod is attached and by suitable plugs, connection is made to the core barrel which will contain the core to be extracted, at the end of which core barrel is what is known as the shot bit, which being rotated upon a large number of small chilled shot which are deposited in the hole through the hollow drill rods, out a groove in the rock, forming a core which gradually rises in the core barrel as the sinkingl proceeds. en this core barrel is full, t e tools are lifted out of the hole, the core released and the tools again lowered therein; it will be seen that in deep drilling a great connected length of drill tools is necessary, which requires not only great power for rotat ng the drill spindle and tools, but also for lifting the cores and tools. In such operations it becomes necessary, as before stated, to move the drill machine back from and toward the hole at intervals to permit of the extraction of the cores and insertion of tools, when the hole is large in diameter.

Assuming now that a drill rod is screwed to the lower end of the drill spindle 95 and the operation of cutting the core and driving the hole is to be proceeded with, power therefor is taken from the prime mover gear 12, thence to the gear wheel 13 and with the clutch 19 engaging the outer clutch face of the sleeve 17. motion is imparted to the drill drive shaft 14. rotating the beveled gear 93, and the swing gate 81 being, of course, securely locked in position by the nut 90 to the swivel plate 68, rotarv motion is l kewise imparted to the beveled gear 94, which rotates the drill'spindle 95. Assuming that the hole has inst been started the voke 109 and

rack rods

107, 107 will have been moved to their highest position. At slight depth in the hole, it is necessary to place downward pressure upon the drill drive rod and cutting tools attached thereto, which mav be done by putting pressure on said hand lever 132, and through it to the rack rods 107,107. During the progress of the work, a constant supply of water run der pressure, is fed to the drill hole through the pipe 117 through the water swivel cap 111, and thence through the hollow drill spindle 95 and through the-drill rods connected thereto. In rotating the drill spindle, the water swivel cap 111 likewise rotates and the water is kept in proper place by means of the annular packing 118. As the rock cutting proceeds, the yoke 109, its carried rack rods, 107, 107*, the water swivel cap and connections, and the drill spindle95, are gradually lowered, t he form of the drill spindle, as shown 1n Fi 11, permitting the drill spindle to pass ownwardly through the spindle sleeve 99 within the guide '86 and likewise throu 'h the guide 87, and its contained sleeve 9 (Fig. 5). When the yoke 109 and its carried drill spindle and rack rods have been fed to their lowest points, power is cut off from the drill head by disconnecting the clutch 19 and the lower end of the drill spindle is disconnected from the drive rod to which it has been attached, and the parts again raised to their highest position, when a new length of drive rod is attached to the lower end of the drill spindle, and the driving operation again proceeded with.

It will be observed that whether the clutch 19 is or is not disconnected from the sleeve 17 motion is imparted by the prime mover gear 12 to the gear 13 and through the sleeve 17 to the gear 23 and through it to the hoist drive shaft 25 bv means of the gear 24.

When the driving has been continued sufficiently to extract a core of the desired length, one end of the rope 121 passing over a sheave on a suitable derrick located above the drill, will be attached to the exposed end of the tools and friction being placed on the friction drum 39, motion will be imparted'to the hoisting drum 28, and in this manner the tools and core are hoisted from the hole, and the tools again lowe ed after freeing the core. After a certain depth has been attained it is no longer necessarv to exert pressure .on the drill spindle b means of the lever 132, the weight of the tools being suificient for the purpose. and with greater depth the we ght of those tools not only does not facilitate the work. but impedes the cutt ng of the rock to such an extent that it becomes necessarv to exert a lift on the same which we do bv ha ing one end of the rope 121 attached to the ba l 1 0. then starting the hoist suflic entlv to put tension on sa d rope, when theho st le"e 44 is set and held in pos t on by the notches of the quadrant 59. It will be obser ed that the direct on of this drum n hoist ng s that shown bv the arrow. and when the b ake band 52 is applied the reverse pull of the hoist is against the friction applied under tension of the spring 55.

It will be observed that the frict on applied bv the brake band 52 to the brake flange 31 is proportional to the pull of the spring57, that is to say, when the brake lever 44 is set in a certain posit on the amount of friction depends upon the tension of the spring and the degree to which it is compressed by the lever arm 54. Th s if, in deep boring, the drill tools weigh i000 pounds, and it is desired to keep the pressure on the rock at, say 500 pounds, the weight in excess of the latter amount is bornebythe jfriction of the brake band which, in turn, is controlled by the tension device, the latter being so set that, as the permit a slight gradual lowering motion of the hoisting drum and feeding the drill to the rock at the required pressure. As the hole becomes deeper, and the weight of the tools increases with added lengths of the latter, in order to keep the pressure at, say 500 pounds, the brake lever is from time to time set to increase the compression of the spring and thereby the friction on the drum and taking up the increased excess Weight. By means of the spring tension device. the suspension of the drill rods is capable of verv delicate adjustment and the pressure of the cutting tool on the rock maybe varied quicklv and conveniently.

It will be understood from the foregoing description that the hand lever 132 with its associated parts, and the brake lever 44 with its associated parts, constitute two systems of control which are independent of one another, each system being equipped with a convenient operating lever capable of manipulation by a single attendant, the svstem associated with the hand-lever 132 being primarily adapted to enable the attendant by his own strength to' control the pressure of the cutting bit during the initial portion of the cutting operation up to the time when the weight of the drill rods and bitis sufiicient to afford the necessar pressure: and the other system, made up of the brake 44 and its associated parts, being adapted. by the application of the power of the drill driving motor, through the hoisting drum. to control the pressure after the weight of the drill rods and bit exceeds the pressure desired at the out.

It will further be observed that each system of control is adapted to enable the attendant to slightly lift the bit in those cases where the bit becomes jammed in the out or the shot are not .well distributed. The manner in which this lifting operation may be performed by the hand-lever 132 will be quite obvious. but it mav be Well to explain that when this slight lifting operation is accomplished by-the lever 44 and the associated parts, the operator grasps the handles of the two conveniently arranged levers l-t and 45 and simultaneously slaclrens the brake band 52 and tightens the band 47. This operation imparts to the hoisting drum a slight movement of rotation in a direction'to lift the tools, and then the attendant immediately slackens the band 4-7 and tightens the band 52, and the cutting operation continues. 7 7 "When it is necessary to move the drilling V machine'away from and toward the drill hole, it is done by loosening the nuts of the bolts 3 projectingthrough' theslots 3 3 in nun-neon saves considerable time and expense in the movement of the apparatus.

When it is desired to use the drilling machine for drilling other than in a vertical line the nuts 73 of the bolts 71 of the swivel plate are loosened, whereupon the direction of the drill spindle may be changed to any desired position, in fact, may be turned entirely around while still retaining the operating gears in mesh.-

What we claim is:

1. In a drilling and hoisting machine, the combination of the prime mover shaft, driving. means therefor located below said shaft, a hoisting drum shaft parallel with the first named shaft. a hoisting drum thereon and adapted to take rotary motion therefrom, intermediate power -transmitting mechanism connected to both said shafts for operating the last named shaft from the former, a drill operating shaft parallel with both first named shafts and mechanism for connecting and discconnecting said drill operating shaft to and from said power transmitting mechanism to respectively operate and suspend the operation of said last named shaft.

2. in adrilling and hoisting machine,

the combination of the prime mover shaft.

combination of the prime mover shaft, driving mechanism therefor located below said shaft, a drill operating shaft parallel with and onapproximately the same horizontal planeas the first named, shaft. a hoisting drum drive shaft parallel with the first named shafts, intermediate gearing for driv ing the hoisting'drum drive shaft from the first named shaft. and clutch mechanism for throwing said drill operating shaft into and out of engagement with said intermediate gearing.

-41. A drilling and hoisting machine, having a supporting frame, a drill head mounted upon said frame, a. drill spindle slidably mounted upon the drill head, a driving motor for rotating the drill spindle, and a hoisting drum, in combination with 'an initial hand-control pressure-applying and drill-lifting mechanism adapted to apply pressure to or lift the cutting tool during the initial cutting operation, and a secizs ondary pressure-controllin and drill-lifting mechanism actuated by t e power of the driving motor through the hoisting drum and adapted to reduce the pressure of or to lift the cutting tool during subsequent stages of the cuttin operation.

5. A drilling an ing a supporting frame, a drill head mounted upon said frame, a drill spindle slidably mounted upon the drill head, a driving motor for rotating the drill spindle, and a hoisting drum, in combination with an initial hand-controlled pressure-applying and drill-lifting mechanism comprising a guiding frame carrying racks and a ratchet hand-lever and power-multiplying gearing cooperating with said racks and adapted to apply pressure to or lift the cutting tool during the initial cutting operation, and a secondary pressure-controlling and drilllifting mechanism actuated by the power of the driving motor through the hoistin drum and adapted to reduce the pressure 0' or to lift the cutting tool during subsequent stages of the cutting operation.

6. A drilling and hoisting machine, having a supporting frame, a drill head mounted upon said frame, a drill spindle slidably mounted upon the drill head, a driving motor for rotatin the drill spindle, and a hoisting drum, in combination with an initial hand-controlled pressure-applying and drill-lifting mechanism adapted to apply pressure to or lift the cutting tool during the initial cutting operation, and a secondary pressure-controlling and drill-lifting mechanism comprising a constantly driven 'primary element, a friction clutch having an actuating lever for connecting the primary element to the hoisting drum, and a friction brake on the hoisting drum having an actuating lever in convenient proximity to the first lever, so that the levers may be simultaneously manipulated by a single attendant, whereby the said secondary mechanism is adapted to reduce the pressure of or to lift the cutting tool during subsequent stages of the cutting operation.

7. A drilling and hoisting machine having a supporting frame, a drill head mounted upon said frame, a drill spindle slidably mounted upon the drill head, a driving motor for rotating the drill spindle, and a hoisting drum, in combination with an initial hand-controlled pressure-applying and drill-lifting mechanism adapted to apply pressure to or lift the cutting tool during the initial cutting operation, and a secondary pressure-controlling and drill-lifting mechanism comprising a constantly driven primary element, a friction clutch having an actuating lever 'for connecting the Pll mary element to the hoisting drum, and a friction brake on the ho sting drum having an actuating lever in convenient proximity hoisting machine, havtothe first lever, so that the lovers may be simultaneously manipulated b a single attendant, a tensioning spring or said brake and means for adjusting and setting the tension of said spring.

8. A drilling and hoistin v machine having a supporting frame, a drill head m0unt ed upon said frame, a drill spindle slidably mounted upon the drill head, a driving motor for rotating the drill spindle, and a hoisting drum, in combination with a pressure-controlling and drill-lifting mechanism actuated by the power of the driving motor through the hoisting drum and comprising a driving element permanently geared to the driving motor, a friction clutch having an actuating lever for con" necting the driving element to the hoisting drum, and a friction brake on the hoisting drum having an actuating lever in convenient proximity to the first lever, so that the levers may be simultaneously manipulated by a single attendant, whereby the said mechanism is adapted to reduce the pressure of or to lift the cutting tool during those stages of the cutting operation at which the weight of the cutting tool and drill rods exceeds the ressure desired at the cut.

9. A drilling and hoisting machine having a supporting frame, a drill head mounted upon said frame, a drill spindle slidably mounted upon the drill head, a driving motor for rotating the drill spindle, and a hoisting drum, in combination with a pressure-controllin and drill-lifting mechanism actuated %)y the power of the driving motor through the hoisting drum and comprising a driving element permanently geared to the driving motor, a friction clutch having an actuating lever for connecting the driving element to the hoisting drum, and a friction brake on the hoisting drum having an actuating lever in convenient proximity to the first lever, so that the levers may be simultaneously manipulated by a single attendant, a tensioning spring for said brake and means for adjusting and setting the tension of said spring.

10. In a drilling and hoisting machine, the combination with a supportmg frame of a drill head, a plurality of rod guides on said drill head, a plurality of parallel rods slidable in said guides and provided with rack teeth, a yoke rig-idly connected to said rods, a plurality o drill spindle guides mounted on said drill head between said rods and vertically spaced apart, a drill spindle rotatably mounted on said oke and adapted to slide freelyin said spind e guides, drive gear between said rods and rod guides I for rotating said spindle, manually actuated gearin engaging said rack "teeth to apply and re ieve pressure to and from the drill spindle through said rods, said rods and rod guides acting to steady the drill spindle in the retracting and drill-feeding movements of same.

11. In a drilling and hoisting machine, the combination with a supporting frame of a drill head, a plurality of rod guides on said drill head, aplurality of parallel rods slidable in said guides and provided with rack teeth, a yoke rigidly connected to said rods, a plurality of drill spindle guides mounted on said drill head between said rods, a multisided drill spindle rotatably mounted on said yoke, multi-walled rotatable sleeves in said spindle guides engaging said spindle and arranged to permit the latter to slide freely therein, a driving gear between said rods keyed to one of said sleeves for rotating said spindle, manually operated power multiplying gearing on said drill head having portions engaging said rack teeth to apply and relieve pressure to and from the drill spindle through said rods, said rods and rod guides acting to steady the drill spindle on the retracting and drill-feeding movements of same. i

19. In a drilling and hoisting machine, the combination of a supporting frame, a drill head mounted upon said frame, a plurality of rod guides on said drill head, a plurality of rods slidably mounted on said rod guides, a yoke connecting said rods, a drill spindle freely slidable-on said drill head and rotatably connected to said, yoke, ahoisting drum on said frame, anoperating line connecting said drum and yoke to retract the drill spindle and control the downward movement of same, a friction brake strap on said drum, a brake arm connected at one end rigidly to said brake strap and a cornpressible tension member connecting the other end of said arm to the other end of said brake strap, said strap, arm and tension member being adatped' to controlthe rotation of the drum on the downward movemovement of same, a friction brake strap on said drum, a brake arm connected at one end rigidly to said brake strap, a compressible tension member connecting the other end of said arm with the other end of said brake strap, and means for holding said tensaid drum and yoke to retract the nrraeoe sion member in difierent adjusted positions to vary the friction of said band upon said drum and thereby control the rotation of the latter on the downward movement of the drill spindle, said rod guides and rods acting to steadythe drill spindle in its vertical movements.

, 14. In a drilling and hoisting machine, the combination with a supporting frame of a drill head including a swing gate, a plurality of rod guides mounted upon said swing gate, a plurality of guide rods slidably mounted on said rod guides and provided with rack teeth, a yoke member connecting said rods, a drill spindle freely slidable vertically upon said swing gate and rotatably supported by said yoke, a drive gear on said swing gate on a line passing horizontally between said rods for rotating the .drill spindle, means on said frame for actuating said gear, and manually operated powermultiplying gearing on said swing gate engaging said raek teeth to apply and relieve pressure to and from the drill spindle through said rods, said rod guides and rods also acting to steady the drill spindle in its vertical movements.

rality of rod guides mounted upon said Y swing gate in horizontal sets Vertically spaced apart, a plurality of guide rods slidably mounted on said rod guides and provided with rack teeth, a yoke member connecting said rods, a. plurality of drill spindle guides spaced apart in vertical relation between said rods, a drill spindle freely slidable vertically in said spindle guides and rotatably supported by said yoke member, a drive gear on said swing gate on a horizontal line passing between said rods for rotating the drill spindle, means on said 1 frame r actuating'said gear, and manually operated powermultiplying gearing having portions engaging said rack teeth to raise and lower said rods to apply and re-' lieve pressure to and from said drill spindle, said guide rods approximating nearly the len h of the drill spindle and acting with sai rod guides to steady the drill spindle in its vertical movements.

PAUL J. DIEMUNSCH. THOMAS H. DOBEBINS. EDMUND DALGLEISH. Witnesses to signatures of Paul J.. Diemunsch and Thomas H. Dobbins:

CQG. CLARK, P. B. LnNz. R Witnesses to signature of Edmund Dalgle'ish:

A. F. Kwrs, H. R. SULLIVAN.

It is hereby certified that in Letters Patent No. 1,117,806, granted November 17, 19M, upon the application of Paul J. Diemunsch and Thomas H. Dobbins, of New York, N. Y., and Edmund Dnlgleish, of Cleveland, Ohio, for an improvement in Core Drilling and Hoisting Machines, errors appear in the printed specification requiring correction as follows: Page 1, line tit), for the word assume read assure; same page, line 99, for the wort convenient read (7021 0012 z'ence; page 6, line 19, after the period, insert the sentence T/ze hoisting drum and rope are also usedfirr raising the drill spindle and yoke after elm/L downward nmmament of (wt/lie, page 8. line in for the word ndntp ed rend adapted; and thztt'the snid Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 8th day of December, A. D., 1914.

' J. T. NEWTON,

Acting Commissioner of Patents.

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