US904436A - Rock-drill. - Google Patents

Description

J. H. HUHN. ROCK DRILL. APPLIOATION FILED 00T. 26,1907.

Patented Nov. 17, 1908.

2 SHEETS-SHEET 1. I

J. H. HUI-IN.

ROGK DRILL. APPLICATION FILED 00T. 26,1907.

Patented Nov. 17, 1.908.

' 2 SHEETS-SHEET z.

' INvaN-rnR W1 'massi-:5 777W/ Z7? 773W UNITED STATES PATENT OFFIQ.

JOHN H. HUHN, OF FAIRMONT, WEST VIRGINIA, ASSIGNOR OF ONE-HALF TO JOHN R. STEEL, OF BARRAOKVILLE, WEST VIRGINIA.

ROCK-DRILL.

Specification of Letters Patent.

Patented Nov. 17, .1908.

Application filed October 26, 1907. Serial No. 399,263.

To all whom it may concern:

Be it known that I, JOHN II. I-IUHN, citizen of the United States, residing at Fairmont, in the county of Marion and State of Test Virginia, have invented certain new and useful Improvements in Rock-Drills, of which the following is a specication.

My invention relates to the art of mining and refers especially to apparatus for boring and drilling.

The chief objects of my improvements are to provide a simple, durable and efcient machine for operating drills and similar boring tools used in mining coal and other minerals; to furnish a machine for the purpose stated that will permit the use of the drill or augur at the plane of support with as much ease and efficiency as at higher levels; and to so arrange the operating and transmission mechanism that the power can be applied at the most desirable point which is directly beneath the stock.

Further objects of my invention are to furnish a novel and durable thread box for the drill rod; to so construct the box that it can be readily opened for the speedy with drawal of the rod, and to furnish a rapid and easily operated means for throwing the operating mechanism into and out of gear.

Other objects are to supply an apparatus of such design as to be light yet strong, and with few parts, so that the appliance may be economically manufactured and cheaply and readily repaired.

I accomplish the above and other important objects by the use of the mechanism illustrated in the accompanying drawings which form a part of this application and in which Figure l is a side elevation of my improved drill and augur operating machine, with the drill rod removed; Fig. 2 is a vertical longitudinal section with the thread box removed; Fig. 3 is an end elevation with the drill-stock head partially rotated and the sleeve of the brace partly broken away; Fig. l is a bottom plan view, showing the gear shifting lever; Figs. 5, 6, and 7, are details, enlarged, of the gear shifting mechanism; Fig. 8 is an enlarged longitudinal section of the thread box in its casing and attached to its bearing plate; Fig. 9 is an enlarged top plan view of the structures shown in Fig. 8, and Fig. l0 is an enlarged perspective view of the thread box removed from its casing.

Referring more in detail to the drawings, the numeral l5 indicates a base-plate provided with a central opening 16, one side of the base being cut away to form a recess 17 which permits access to a shifting lever hereinafter described, and to allow a full sweep to said lever.

Upon the base plate, and forming a closure for the opening 16, is secured a bed-plate 13, and upon this plate rests a semi-cylindrical base 19 (Figs. l and 2) disposed horizontally and having a forwardly projecting plate 20, provided upon its under surface with an annular collar or flange 2l which engages a circular opening in the bed plate 18, said iange having a turning fit in its seat thus per mitting the rotation of the said base upon the bed plate 13. One side of said semicylindrical base 19 is slotted and provided with a clamping screw 22 passing through a flange 23 and tapped in a boss 24.' Upon the opposite side of the cylindrical base is a corresponding boss 25, through which passes a bolt 26. This bolt extends through a curved slot 27 in the bed plate and its lower end is furnished with a retaining nut 28. Said slot limits the position of the base upon its flange, the bolt 26 serving to lock it securely in adjusted position.

lllithin the cylindrical portion 19 of the base is located a tubular sleeve or bearing 29, having an enlarged end 30 to which is integrally joined a hollow post or' drill-stock 3l, a lateral web 32 serving to strengthen the junction of the post 3l with the base and to increase the rigidity of the structure. The outer end of the bearing 29 projects beyond the base and is embraced by a split collar 33 having parallel flanges 34 between which is held the lower end of a diagonal brace 35, a screw 36 serving to clamp the whole firmly together. The upper end of the brace 35 is bifurcated to form a forli 37 which embraces the web 32, and is secured by a bolt 38. lhen the screw 22 is loosened the bearing 29 is free to turn in its casing, the cylindrical portion l5) of the base, but is held firmly in adjusted position when the said screw is tightened, longitudinal displacement being prevented by the clamping collar 33 and the enlarged end 30.

Upon the upper end of the drill-stock 31 is mounted a head 39 and from the lower part of this head extends a reduced portion 40, tubular in form; which telescopes within the post 31. The upper portion of said post is slotted and a binding collar 41, surrounds its upper end, a clamping screw 42 serving to hold the telescoping portion at any adjusted position, which may be longitudinal or pivotal. The head is provided with an annular groove 43 which surrounds the neck 44 just above the reduced portion 40, and in this groove are received the curved arms 45 of a bracket 46, the body having a slot 47 to admit the web 32 and an adjusting screw 4S. This screw passes through a guide plate 49 and the slot 47, and has a threaded engagement with the collar 41. r1`he said bracket 46 serves to support the head in extended position, during the process of adjustment and until the clamping screw 42 is set, the engagement of the arms 45 permit-ting the head to be rotated upon the part 40. Fixed to the under side of the head is aflange 50 and to this is bolted one end of a threaded brace-rod 51, the said rod being surrounded by a loose sleeve 52, the lower end having a lug 53 adapted to engage holes 54 in the bed plate 18, the upper end of said sleeve abutting against an adjusting nut 55, which determines by its position the length of the combination brace thus formed. The said head 39 is divided on a plane at a right angle to the said extension 40 into two sections, the upper section 56 being secured to the lower by screw bolts 57. The interior of the head thus formed is chambered and bored to receive a hollow shaft 58 through which passes the drill bar, a feather 58a upon the inner surface of said hollow shaft engaging aspline in said bar in the usual manner. The drill bar is not shown in the drawing nor the operative connection illustrated since their construction and use are matters easily understood by those skilled in the art. The front end of said head 39 is reduced by an annular rabbet to forni a shoulder 59 and upon this reduced end is carried a threadbox bearing 60 provided with a counter bore which lits over the shoulder 59 and the bearing is fastened to the front of the head by screw bolts 61. The front side of the bearing 6() is provided with a T-slot 60a.

The thread box is constructed in halves 62 held in position by a casing 63, formed of a single strap or plate which embraces three sides of the said box and is connected on the top by a rock shaft 64, the ends of the shaft being reduced and secured in ears 65 which project from said casing. Each half of the box carries upon either end a gib 66, fitted to slide in said T-slot 60a in the bearing 60 and provided with stops 66a. The lower side of the casing plate 63 has a projecting guide lip 67 which enters the slot 60a. The lower half of the box is attached -to the casing by a screw 68, and an adjusting screw 69 passes through a threaded hole in the rock shaft 64, its lower end engaging an eccentric face 64l cut in the rupper half of the thread box, and its upper end bent at an angle to i The parts thus far described constitute the supporting structure of the drilling machine, within which are located the coperating operative elements. Upon the hollow shaft 58 is carried a bevel gear 72 which meshes with and receives motion from a bevel pinion 73 mounted upon a hollow shaft or sleeve 74 journaled in the extension 40. The bore of this sleeve 74 is squared and receives a square shaft 75 bearing upon its lower end a bevel pinion 76 which meshes with a bevel gear 77 mounted upon the end of a horizontal shaft 7S journaled in the sleeve 29, said shaft being retained in place by a collar 7 9 keyed to the shaft by a pin S0. It will thus be understood that the head 39 and sleeve 74 may be slid longitudinally upon the square shaft 75, being locked in adjusted position by the clamp screw 42. The collar 79 serves for the attachment of a flexible shaft (not shown) when it is desired to apply power in that way.

The gearing thus described is driven by a pulley S1 mounted upon a vertical shaft 82 keyed by a pin 33 to the hub S4 of a bevel pinion 85, meshing with and imparting motion to the bevel gear 77. Upon the upper side of the pinion is a reduced portion 86 forming a bearing journaled in a box S7, supported by an oset 8S, secured by screws or bolts 89 to the horizontal extension 2O of the base. The bearing S6 is essentially a continuation of the main shaft 82, the particular details being carried out in the manner shown for convenience in assembling. The hub 84 of the pinion S5 has a bearing in a collar 90, supported by an external flange 91, upon cams 92 projecting upwardly from an internal flange 93 which forms part of an annular hanger 94, secured to the under side of the bed-plate 18 by screw bolts 95. The under surface of the said fiange 91 is cut away upon opposite sides to form recesses 96, which correspond with the cams 92. To the under side of the collar is secured a shifting lever 97 by means of which the said collar can be rotated within the ring hanger 94, and this movement will Til elevate and depress the collar A90 as the inclined faces 98, 99 of the cams and recesses pass over each other, thus shifting the pinion 85 into and out of gear with said gear wheel 77. One side of the wall of the ring hanger is cut away to form a slot 100 to acc0mmodate the lever 97 which lies in the before mentioned recess 17 of the base plate 15.

Having thus described the construction of my improved drilling machine in detail, I will give a general outline of the method of applying the apparatus in the operation of a coal augur or drill. rllhe machine will be supported in the usual manner upon timbers placed beneath the base plate 15, or the said plate may rest directly upon the floor of the tunnel, a suitable trench or channel being cut therein to accommodate the driving mechanism. The machine having been properly set and operative connection made between the source 0f power and the driving shaft, the thread box bearing is opened by means of the adjusting screw 69 to receive a suitably splined tool, such as an augur or drill, which is placed in the hollow shaft 58 so that the spline in the tool engages the feather 58L to cause the joint rotation of the shaft and drill. The said box is then closed upon the threads with which the drill bar is furnished, and when the drill is rotated the threaded engagement will cause the drill to be properly fed to its work. The screws 42 and 48 are loosened. so that the head 39 may be elevated to the desired position, where it is held by the screw 48. Rotation is then made upon the bracket 46 as required and the parts secured by tightening the screw 42. In all inclined positions of the drill stock 31 the brace screw 51 may be used to increase the stability apparatus. The power is now applied to operate the drill, the bevel wheel 88 being thrown into and out of gear at will by means of the lever 97.

Having thus described my invention what I claim as new, is

1. In a drilling machine, the combination with a bed-plate, and a base pivotally mounted thereon, of a horizontal sleeve mounted to rock in said base, a drill stock joined to said sleeve and extending at an angle therewith, drill operating means carried by said sleeve and drill stock, and a driving shaft having its axis lying in the same plane as the axis of the drill stock.

2. In a drilling machine, the combination with a bed-plate, and a base pivotally mounted thereon, of a horizontal sleeve mounted to rock in said base, a drill stock formed integral with said sleeve and extending at a right angle therefrom, drill operating means carried by said sleeve and drill stock, and a driving shaft arranged with its axis in the same plane as the axis of the drill stock.

3. In a drilling machine, the combination with a bed plate, and a base pivotally mounted thereon, of ahorizontal sleeve mounted te rock in said base, a drill stoel; formed integral with said sleeve and extending at an angle therefrom, drill operating means carried by said sleeve and drill stock, a driving shaft arranged with its axis in the same plane as the axis of the drill stock, and manually operated means for putting said shaft into and out of gear with said drill operating means.

4. In a drilling machine, the combination with a bed plate, and a base pivotally mounted thereon, of a horizontal sleeve mounted to rock in said base, a drill stock formed integral with said sleeve and extending at a right angle therefrom, drill operating means carried by said sleeve and drill stock, a driving' shaft arranged with its axis in the same plane with the axis of the drill stock, a collar for said sleeve, a brace member connecting said collar with the drill stock, and means for putting said shaft into and out of gear with the drill operating means.

In a drilling machine, the combination with a bed plate, and a base pivotally mounted thereon, of a horizontal sleeve mounted to rock in said base, a drill stock formed integral with said sleeve and extending at an angle therefrom, drill operating mechanism carried by the sleeve and drill stock, a driving shaft arranged with its axis in the same plane as the axis of the drill stock, a collar for the said sleeve, a brace connecting said collar with the drill stock, and means for putting said shaft into and out of gear with the drill operating mechanism, said means consisting of a collar surrounding` said shaft and adapted to move the shaft longitudinally when said collar is turned.

6. In a drilling machine, the combination with a. bed plate, and a base pivotally mounted thereon, of a horizontal sleeve mounted to roel; in said base, a drill stock formed integral with said sleeve and extending at a right angle therefrom, a collar for the sleeve, a brace connecting said collar with the drill stock, a drill head carried on said stock, a sectional thread box slidably mounted upon the head, means for alternately locking and releasing the thread box sections, drill operating mechanism carried by the sleeve and drill stock, a driving shaft arranged with its axis in the same plane as the axis of the drill stock, and manually operable means for moving the driving shaft longitudinally.

7.. In a drilling machine, the combination with a bed plate, and a base mounted thereon and adapted to turn about a vertical axis, of a horizontal sleeve journaled in said base, a drill stock forme-d integral with said sleeve and arranged with its axis in a plane cutting said vertical axis, drill operating mech anism carried by said sleeve and drill stock, a driving shaft arranged with its axis coinciding with said vertical axis, and manually operable means for moving said shaft vertically in its bearings.

S. In a drilling machine, the combination with a bed plate, a base mounted thereon and adapted to turn about a vertical axis and a drill stock having a hollow bearing extending at a right angle therefrom, said bearing journaled to rock in said base, of a collar for said hollow bearing, a brace connecting said collar and stock, a driving shaft having its axis coincident with said vertical axis, a collar surrounding said shaft, an annular hanger supporting said collar, said collar and hanger having inclined faces arranged for mutual engagement, and a lever attached to said collar.

9. 1n a drilling machine, the combination with a bed plate, a base mounted thereon and adapted to turn about a vertical axis, and a drill stock having a hollow bearing extending at a right angle therefrom, said bearing journaled to rock in said base, of a collar for said hollow bearing, a longitudinal web attached to the drill stock, a brace member connecting said collar and web, a driving shaft arranged with its axis coincident with said vertical axis, and manually operable means for shifting said driving shaft longitudinally.

10. 1n a drilling machine, the combination with a bed plate, a base carried thereon and arranged toturn about a vertical axis, and a drill stock having a hollow bearing extending at a right angle therefrom and journaled to rock in said base, of means for clamping said bearing, a collar for the bearing, a longitudinal web projecting from the drill stock, a brace connecting said collar and web, a driving shaft arranged with its axis coincident with said vertical axis, and means for shifting said driving shaft longitudinally, said means consisting of a collar surrounding said shaft, an annular hanger supporting the collar, cams carried by said collar and hanger and adapted for mutual engagement, and a lever attached to the collar.

11. In a drilling machine for the purpose specified, the combination with a supporting base, a drill stock arranged to rock in said base, a head for said drill stock having a swivel connection therewith and drill operating mechanism carried by said drill stoclr and head, of drill feeding means consisting of a thread box formed in sections, a sliding connection between the box and head, an adjusting screw mounted to rock upon one of the sections and adapted to engage the other section, and a driving shaft arranged with its axis lying in the same plane as the said drill stock.

12. 1n a drilling machine for the purpose stated, the combination with a supporting base, a drill stock arranged to rock on said base, a head having a swivel connection with the stock and drill operating mechanism carried by said drill stoclr and head, of drill feeding means consisting of a thread box formed in sections, an adjusting screw mounted to rock upon one of the sections and adapted to engage the other section, a vertical driving shaft, and means for shifting the said shaft into and out of gear with said drill operatino mechanism.

18. 1n a drilling machine for the purpose stated, the combination with a supporting base, a drill stock arranged to rock on said base, a head for said stock having a swivel connection therewith, an adjustable brace for the stock and drill operating mechanism carried by said stock and head, of drill feeding mechanism consisting of a thread box formed in sections, an adjusting screw mounted upon a rock-shaft carried by one of the sections and adapted to engage the other section, a vertical driving shaft, and means for shifting the said shaft into and out of gear with said drill operating mechanism, said means consisting of a collar surrounding the shaft, an annular' hanger supporting said collar, cams carried by said collar and hanger and adapted for mutual engagement, and a lever attached to the collar.

14C. An apparatus for the purpose stated, including a supporting base arranged to turn about a vertical axis, a sleeve journaled to rock in said base, means for clamping said sleeve against turning, a drill stock formed integral with said sleeve and extending at a right angle therefrom, drill operating means carried by said sleeve and drill stock, and a driving sha-ftarranged with its axis in the same plane as the axis of the drill stock.

15. An apparatus for the purpose stated, including a supporting base arranged to turn about a vertical axis, a sleeve journaled to rock on said base, means for clamping said sleeve to prevent turning, a drill stock formed integral with said sleeve and extending at an angle therefrom, drill operating means carried by said sleeve and drill stock, a driving shaft arranged with its axis in the same plane as the axis of the drill stock, and manually operated means for shifting the driving shaft longitudinally.

1n testimony whereof 1 affix my signature in the presence of two witnesses.

JYGHN H. HUHN.

1Witnesses C. B. BROWN, 1t. A. SATTERFIELD.

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