Abstract: A drill bit includes a plurality of continuous segments impregnated with diamond that are each mounted to form a corresponding blade. The regions between the blades define a plurality of fluid passages on the bit face. The blades extend radially outwardly to the gage. The continuous segments may be either straight or spiral in design. Furthermore, the design of the segments supports varying one or more of: diamond content, width, back rake angle and/or relief angle along a length of the segment.

Abstract: An earth boring device for forming horizontally extending bore holes beneath the surface of the earth and installing a conduit therein without substantially disturbing the surface of the earth is disclosed. The earth boring device is a generally elongate member having a cutting tool disposed at a leading end, and means to attach a conduit to be disposed in the bore hole at a trailing end. A pair of spaced apart drive augers is disposed between the leading end and the trailing end to propel the earth boring device through the earth. The earth boring device can include at least one flexible section to enable a bending of the earth boring device for boring a curved bore hole.

Abstract: An auger for digging holes that minimizes the amount of loose dirt excavated in and around the dug hole. The auger comprises an elongated shaft body whose axial longitudinal center is disposed in a parallel offset position from the axial engagement line of orientation with the driving source for rotationally driving the auger. The shaft body of the auger revolves in an eccentric lateral orbit as the auger rotates which digs the hole by pushing and widening the dirt in the hole rather than cutting and scraping. The distal end of the auger has a tapered configuration for initial penetration into the ground. The eccentric movement of the shaft body of the auger helps to compact the walls of the hole being dug.

Abstract: An auger for digging holes in soil is coupled to a gearbox and powered by the power take-off of a tractor. The auger comprises a shaft with a cutting head disposed near its bottom end. The cutting head comprises a plurality of cutting (i.e. digging) blades that cut into soil. Flighting disposed above the cutting head moves and lightens soil, but the flighting does not extend far above the cutting head. The majority of the shaft is free from protrusions that may ensnare a user of the auger during use.

Abstract: A joint connecting a pair of members rotatable about a common axis end to end includes a first member having a threaded end portion and a non-circular exterior surface rearwardly of the threaded end portion, a second member having a threaded socket wherein the threaded end portion of the second member can be engaged, and a non-circular exterior surface, a ground engagement sleeve having a non-circular profile on an inner surface thereof whereby the sleeve can be slidably mounted on the non-circular exterior profiles of the first and second members when such profiles are brought into alignment by rotation of one member relative to the other in a manner effective to pass torque from one member to the other by means of the non-circular profiles, a first pair of alignable holes in the sleeve and first member to receive a fastener to secure the sleeve to the first member and a hole in the second member penetrating the threaded socket and positioned to receive a fastener to secure the second member to a third membe

Abstract: A down-the-hole assembly includes a housing having a central axis and a mechanical gear box positioned within the housing. The mechanical gear box is coupled to the housing such that rotation of the housing at a first rotational rate provides a rotary input to the mechanical gear box. A rotary cutting bit is coupled to the mechanical gear box. The mechanical gear box is configured to rotate said rotary cutting bit at a second rotational rate in response to that rotary input from the housing. The second rotational rate is greater than the first rotational rate. The mechanical gear box is also further configured to cause the rotary cutting bit to orbit about the central axis of the housing.

Abstract: A drill bit for core sampling includes a body having a central axis and first end having a tapered outer surface and a radius transverse to the central axis, and an insert having a cutting surface on the first end oriented at an axial angle relative to the radius to move material displaced during drilling away from the first end.

Abstract: An auger assembly has a shaft supporting flight units having lug and recess connections allowing broken flight units to be removed from the shaft and replaced with another flight unit. The auger assembly is incorporated in an ice drill having a cordless electric motor and a cutting head. A coupling locks the auger assembly on the motor drive shaft.

Abstract: A cable guide mechanism configured to be releasably attached to a shaft, which includes a body portion, an indent or groove and a protrusion, characterised in that said indent or groove is located on the opposite side of the body portion to the protrusion, and is dimensioned and configured to releasably retain an inside edge of a first distal end of a loop which is attached to a terminal end of a cable; the protrusion is tapered with its widest section directly opposite the indent or groove; the linear distance between the bottom of the indent or groove and the widest section of the protrusion is sufficiently close to the inside length of the loop that in use the first distal end of the loop cannot climb out of the indent or groove; said shaft is configured to freely rotate co-axially inside the cable guide mechanism.

Abstract: A ground augering assembly comprising a dirt dispersing plate having a forward dirt screeding face and having a lower augering depth stopping face; a “C” clamp for alternatively mounting on to and releasing from an auger blade; and a rotation facilitating helically threaded lug, eyed plate, and helically threaded nut combination interconnecting the dirt dispersing plate and the “C” clamp.

Abstract: A method and apparatus for drilling a subterranean formation or material utilizing a drilling apparatus which includes a drill string having a leading end and a trailing end and having a bottom hole assembly connected with the leading end. The bottom hole assembly includes a drill bit and an externally threaded screw section. In operation, the drill bit is rotated, forming material cuttings and an opening in the subterranean formation, and the threaded screw section is rotated within the opening, forming a helical groove in the subterranean formation.

Abstract: The invention includes a pair of swivels for use with an auger boring machine. One of the swivels allows for rotation of a first auger of a first auger assembly connected to the trailing end of a pilot tube without rotating the pilot tube. The other swivel allows for rotation of a larger diameter second auger connected to the trailing end of the first auger assembly without rotating the first auger. Each of the swivels includes a thrust bearing.

Abstract: A roof drill bit has an elongate roof drill bit body, which has a forward end and a rearward end. The roof drill bit body contains a slot at the forward end. The roof drill bit body contains a dust port wherein the dust port has a central longitudinal dust axis. The roof drill bit further has a hard insert received within the slot wherein the hard insert has a leading surface. The leading surface of the hard insert is rotationally forward of the central longitudinal dust axis of the dust port.

Abstract: A brace or gusset is added to the first and last flight blade of an auger length for stability and reinforcement. The braces are generally box shaped with the flight blade as the box bottom. The brace walls are welded together along with a top panel. The brace is adjacent the auger shaft on one end and complementary shaped on one side to conform to the shape of the flight helix. A deflector is added to the last flight blade to distribute dirt and debris away from the first flight blade on the subsequent auger length. The auger length is reinforced against the twisting torque and compressive forces that occur at the first and last flight blade.

Abstract: A coupler for securing an auger and/or extension piece(s) to a PTO shaft. In one construction, a threaded PTO collar mounts to a PTO shaft and mates with a suitable length stub shaft and captured, knurled hand nut mounted to an auger. The stub shaft indexes in non-rotational engagement to the PTO collar. In another construction, a PTO collar provides several detents that interconnect with resiliently biased projections at an auger collar. A hand piece maintains the connection. In other embodiments, key(s) at the PTO shaft mate in non-rotational engagement with keyway(s) at an auger and a resilient member latches the non-rotational connection. Shaped PTO shaft surfaces and complementary auger coupler surfaces can be included with the later couplers to enhance the connection.

Abstract: A drill includes a main body and a high-hard tip attached to a front end of the body. The tip has a width greater than the diameter of the body and has an angular cutting portion. In order to form a hole having a greater distal end in a wall, the tip is attached on the main body in such a way that a cutting point on an axial line of the tip is eccentrically shifted from an axis of the main body. The drill is inserted into a preliminary hole drilled beforehand and cuts a distal end of the preliminary hole to form a hole including an expanded distal end having a greater diameter. Thereby, the expanded distal end hole having a greater distal end can be formed that is capable of increasing the fixity of an anchor far greater.

Abstract: A portable drilling device for use in horizontal boring through a substrate beneath an impediment includes a motor mounted on an inclined stabilizer bar. The inclined stabilizer bar includes a handle for use by the operator of the drilling unit which allows the operator to guide the unit during operation. A shaft is operatively mounted on the motor and is rotatably carried by the stabilizer bar. The shaft is in turn attached to an auger which is rotatably carried within a bearing housing assembly that is attached to the inclined stabilizer bar at a predetermined angle. A skid shoe is mounted underneath the shaft-auger attachment point and is attached to both the housing and the inclined stabilizer bar, whereby, when the motor is engaged the shaft and the auger are rotated in order to bore a horizontal opening through the substrate beneath an impediment such as a sidewalk or driveway.

Abstract: An auger generally comprising a shaft having flighting which is helically wound around the shaft to convey spoil to the surface of the area being excavated. The shaft has a first end and a second end. The shaft first end is adapted to be combined with and rotated by a drilling machine. The shaft second end is adapted to be removably combined with a boring head and one or more drilling elements to bore through the ground. The invention comprises two interchangeable boring heads. A first boring head is adapted to drill through soft ground conditions such as dirt or clay and a second boring head adapted to drill through hard ground conditions such as rock.

Abstract: A tool for boring has an axle for drivingly linking at a first end to a portable rotatable machine. At a second end, the axle has a shaft-receiving bore into which a nose shaft is inserted. The nose has a cutting tip and a flight cutter that aligns with a flight on the axle. An insulator is electrically interposed between the cutting tip and the nose shaft, thereby electrically insulating the nose shaft from the cutting tip. The flight cutter performs the high-wear cutting at the leading edge of the flight, thereby causing the flight to merely remove the soil or other particulate from the hole being formed.

Abstract: A drill bit comprising: a cutting section comprising gage cutters, wherein in the cutting section is a first end of the bit, and wherein the cutting section has a full gage diameter; a heel section comprising a blade, wherein the heel section is at an end of the drill bit opposite the cutting section, and wherein a diameter of the heel section is a full gage diameter, wherein the blade has a high spiral around the drill bit; and a clearance section between the cutting and heel sections, wherein the clearance section comprises a diameter less than full gage, and wherein clearance section extends from the gage cutters of the cutting section to the blade of the heel section.

Abstract: A removable plug and collar for a hollow stem screened auger and a method of collecting water samples using the plug and collar. The plug has an outer threaded surface that is threaded in a first direction. The top of the plug has an internal threaded cavity that is threaded in a second direction opposite that of the first direction. The collar is pressure fit within the top of the screened auger, held in place with an auger bolt, and has an internal threaded surface to receive the plug. The plug has multiple ports to receive air and sample tubes, enabling samples to be collected without removing the plug from the screened auger. To set a well after sampling, the plug is removed from the collar down hole as a drill rod is threaded into the plug's internal threaded cavity in a direction the same as the second direction.

Abstract: A rotary-percussion drill includes a four-start helical shaft (3) having a fourfold rotationally and mirror-symmetrical helix cross-section, with radially projecting convexly formed helical webs (4) extending from a concave groove bottom (5) up to the envelope circle (6) and having an undercut (7) with respect to a web width (S).

Abstract: A brace or gusset is added to the first and last flight blade of an auger length for stability and reinforcement. The braces are generally box shaped with the flight blade as the box bottom. The brace walls are welded together along with a top panel. The brace is adjacent the auger shaft on one end and complementary shaped on one side to conform to the shape of the flight helix. A deflector is added to the last flight blade to distribute dirt and debris away from the first flight blade on the subsequent auger length. The auger length is reinforced against the twisting torque and compressive forces that occur at the first and last flight blade.

Abstract: A reaming tool includes a tubular body having a nose portion with a concave center. A plurality of blades defining junk slots therebetween extend axially behind the nose and taper outwardly from the exterior of the tubular body. Rotationally leading edges of the blades carry a plurality of cutting elements from the axially leading ends. Selected surfaces and edges of the blades bear tungsten carbide, which may comprise crushed tungsten carbide. The shell of the nose is configured to ensure drillout from the centerline thereof toward the side wall of the tubular body. A method of drilling out a reaming tool is also disclosed.

Abstract: A drill bit for core sampling includes a body having a central axis and first end having a tapered outer surface and a radius transverse to the central axis, and an insert having a cutting surface on the first end oriented at an axial angle relative to the radius to move material displaced during drilling away from the first end.

Abstract: In a drilling tool, in particular a spiral drill, in particular for drilling rock, comprising a tool-side fastening end, a workpiece-side cutting end and an interposed cutting part comprising at least one main helical groove extending along the cutting part, which is defined by a substantially constant helix pitch, and at least one partially cylindrical and/or partially conical helix web outer face extending along the cutting part, defined by at least one main helical groove, it is provided that a plurality of groove sections are formed in the helix web outer face, which extend transversely to the direction of the pitch of the main helical groove.

Abstract: A method of mechanized construction has developed for installing an earth wire under-bracing by using an auger crane and adjustable excavating unit with an auger crane. The extendable excavating unit is mounted to the lower end of an auger shaft of the auger crane and excavation teeth extendable and retractable are mounted to the excavating unit, thereby allowing excavation of a burial hole suitable to the size of the earth wire under-bracing. Whether it is needed to bury the earth wire under-bracing having a larger diameter than the diameter of excavation existing on the auger crane, or bury small-sized earth wire under-bracing, a method for mechanized construction of the earth wire under-bracing is enabled without difficulty by using an auger crane and adjustable excavating unit.

Abstract: A drill rod having a fitting portion protruding toward the distal end and of the drill rod and extending along a first axial line, wherein the fitting portion includes: a parallel male thread portion in which a minimum distance from the first axial line in a cross-section perpendicular to the first axial line is constant; and a male thread ending portion which is continuous with a proximal end of the parallel male thread portion, and in which the minimum distance increases as approaching toward a proximal end thereof; wherein the fitting portion is formed such that the minimum distance does not decrease as approaching from a distal end to a proximal end thereof; and the proximal end of the male thread ending portion is positioned on a face where a distance from the first axial line gradually increases as approaching from the parallel male thread to the proximal end of the male thread ending portion.

Abstract: The invention relates to an auger for making a borehole that presents in its inside wall a groove that is substantially helical, said auger comprising: a hollow core provided with an outer helical blade; a movable cutter gouge suitable for taking up an active position in which the gouge projects outside the volume defined by the periphery of the blade, and a retracted position in which it is placed inside said volume; and means for displacing said gouge from its retracted position to its active position and comprising an additional member mounted to move in said core in translation and/or in rotation, and placed at the bottom end of said core, together with control means for causing said gouge to be displaced from its retracted position to its active position in response to said additional member moving relative to at least the bottom portion of said hollow core.

Abstract: The invention relates to an auger bit for an earth auger, in which at least two curved plates are provided and extend radially outwards from a drilling axis, the axial height decreasing radially outwards.

Abstract: The invention relates to a method for producing a borehole in the soil, in which a drill pipe and a conveyor screw arranged inside the drill pipe are set into rotation and introduced into the soil, and in which outcropping soil material is loosened by means of at least one main cutting edge, which is positioned axially in front of the conveyor screw, and is conveyed by means of the conveyor screw in the inside of the drill pipe. In accordance with the invention provision is made for the main cutting edge to be arranged on the drill pipe and to be rotated therewith. The invention further relates to a device for producing a borehole in the soil which can be employed in the method according to the invention.

Abstract: A recoil auger enables holes to be drilled by using only straight line motions of a person's hand, arm, and shoulder. The recoil auger is comprised of a recoil drive system connected to an output shaft, which in turn is connected to an auger. The recoil drive system has a recoil mechanism that imparts unidirectional rotation to the auger in response to bidirectional rotation of the recoil mechanism. The recoil mechanism includes a clutch bearing to unidirectionally rotate the auger. The recoil drive system has a handle that the person grasps during operation. Operation is achieved by pulling a rope wound around a rope wheel. A recoil spring rewinds the rope after a pulling motion. Multiple recoil mechanisms assembled to the output shaft and one or more suitable handles enable more than one person to operate the recoil auger at the same time.

Abstract: Drill with a centering drill insert, and a method of using a drill with a centering drill insert, and the insert therefor. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

Abstract: A drill head has a domed leading face and carries cutting teeth. A tubular drill string can be used to drive the head into the ground. An off-center aperture communicates with the bore of the string, by means of a connecting passage, which defines an oblique cone. During drilling, a flushing medium can be pumped down the bore and out through the aperture. As the drill string and head are withdrawn, an elongate member can be introduced down the bore, out through the aperture, to be left in the passage drilled by the head. The form of the mouths and connecting passage avoid the elongate member encountering any discontinuities which would prevent it leaving the head. The elongate member could be reinforcing bar for a cast-in-situ pile, or part of a ground loop for a ground heat energy system.

Abstract: A drilling machine structure is disclosed, characterized in which handles are arranged on the machine body for holding by the operator with both hands. Between the two handles there are assembled a power motor and a plurality of gear plates with different number of teeth to drive respectively center tip and spiral-shaped rotary blade at the lower part of machine body. The center tip and rotary blade are made of different materials in view of the drilling needs. As such, when drilling a hole, the drilling machine drills with the center tip in alignment with the hole center to guide the varying-speed cutters peripherally arranged at the very bottom of rotary blade to perform real rotary cutting and drilling, and the chips from the cutting are instantly and continuously brought to the surface through a lead hole disposed above each cutter under the driving of rotary blade, thereby achieving smooth drilling in different occasions.

Abstract: A pilot tube for an auger boring machine has a lubrication through passage formed therein through which water or another lubricant may be pumped during the driving of the pilot tube to facilitate formation of a pilot hole in the earth which is subsequently followed by an auger in forming a trenchless hole for laying underground pipe. Preferably, the lubrication passage extends to exit openings adjacent or on a steering head. A lubrication feed swivel is connected the trailing end of the pilot tube for feeding the water into the pilot tube while allowing rotation of the pilot tube for the steering thereof during the process of driving the pilot tube.

Abstract: A mortar removal drill bit system includes a toothed drill bit that includes an elongated rod that has a first end and a second end. A plurality of rectangular plates is attached to and extends laterally from the rod. Each of the plates has a distal edge with respect to the rod. Each of the distal edges is orientated parallel to a longitudinal axis of the rod. The first end of the rod is removably extendable into and attached to a drill.

Abstract: Described herein is a bit (9) for excavation and compaction equipment (1) for erecting piles, the bit (9) being provided with a central body (21), an excavation screw (24) fixed to the central body (21), and a dislocating element (40) for compaction of the walls of the excavation, a retention device (25) that can be selectively re-closed being associated to the central body (21) for preventing fall of debris beyond a leading edge (27) of the screw (24) during extraction of the bit (9), and the dislocating element (40) being mounted on a fixed portion (28) of the retention device (25), and presenting a radial development, which decreases with respect to a rotation of excavation of the excavation screw (24) for compaction of the walls (3a) of the excavation (3) during extraction of the bit (9).

Abstract: A guide frame (1) for an earth drilling apparatus includes a support plate (6) for holding the drive unit (7) and a handle frame (2) having handle sections (17, 18) for holding and guiding the earth drilling apparatus. Operator-controlled elements (19a, 19b, 19c) for controlling the drive unit (7) are arranged in the region of the handle section (18). The handle sections (17, 18) of the handle frame (2) lie in a plane (5) above the support plate (6). The handle frame (2) encloses the drive unit (7) as a closed frame and is connected via a carrier frame (8) to the support plate (6). The carrier plate (8) is fixed to the handle frame (2) via several coupling elements (20). Each coupling element (20) includes a vibration damper (24) which is arranged between the carrier frame (8) and the handle frame (2). In this way, the handle frame is decoupled by the carrier frame from the drive unit with respect to vibration without affecting the bracing of reaction forces via the handle frame.

Abstract: A Sprinkler Repair Auger is disclosed. The auger is particularly helpful because it is configured to cut a hole into the ground surrounding a conventional pop-up sprinkler head so that the sprinkler head can be easily accessed for repairs and/or replacement. The auger should is to a conventional power tool, such as an electric drill or related equipage. The auger has a hollow-tipped bit configured surround the sprinkler head. The auger further includes a stabilizing assembly associated with the auger to provide stability and safety while holes are being formed. The stabilizing assembly further has retractable legs upon which the user can stand to further stabilize the device while making holes. Finally, the assembly includes a guide for guiding the auger bit as it cuts, as well as a lower sleeve to protectively surround the auger bit and hole while cutting.

Abstract: A machine, such as a scraper machine, includes a bowl, a cutter and a loading apparatus coupled with the cutter and including a chute having a first end disposed outside the bowl, and an auger positioned at least partially within the chute. The auger includes at least one auger, and is configured to move work material between the first and second ends of the chute. A method of operating the scraper machine includes capturing work material at least in part by moving the cutting edge of the scraper machine through the work material, and conveying work material from the chute into the bowl at least-in part by rotating the auger.

Abstract: A drill includes a main body and a high-hard tip attached to a front end of the body. The tip has a width greater than the diameter of the body and has an angular cutting portion. In order to form a hole having a greater distal end in a wall, the tip is attached on the main body in such a way that a cutting point on an axial line of the tip is eccentrically shifted from an axis of the main body. The drill is inserted into a preliminary hole drilled beforehand and cuts a distal end of the preliminary hole to form a hole including an expanded distal end having a greater diameter. Thereby, the expanded distal end hole having a greater distal end can be formed that is capable of increasing the fixity of an anchor far greater.

Abstract: An auger planter for forming small holes in the earth for the planting of flower bulbs, plant seedlings and plants, and for the insertion of termite monitors and baits. The auger includes a central shaft and a single helical flighting having its leading edge configured to have a sickle blade shape with a cutting edge. The opposite end of the flighting has a portion which is directed in an essentially vertical orientation proximating an alignment parallelling the axis of shaft.

Abstract: A reversible post hole digger apparatus powered by a power takeoff shaft includes a transmission providing a reverse gear and a forward gear in a single housing. The apparatus has a power head disposed between a shaft connected to the power takeoff and an output shaft driving an auger. A gear box within the power head contains a main shaft which carries forward and reverse pinion gears at opposite ends and has a central portion with an external spline connector. The pinion gears are activated by a central spline-containing slide. Movement of the slide, carried out by means of a shift lever engaging a fork with a rack and pinion device, provides connection to forward, reverse and neutral positions on the shaft. Upper and lower ring gears drive an output shaft in a selected direction.

Abstract: An auger support assembly for use with an augering system for mining which bores a pair of side-by-side holes through a coal seam using dual side-by-side augers. Each auger includes a drilling section which is followed by a series of auger flights for conveying the bored coal back out of the respective hole. The augers are connected together in axially aligned pairs and are supported by the auger support assembly. The auger support assembly includes a pair of bearing housings that are disposed on drive shafts which extend outwardly from the first ends of a first pair of parallel augers and are received within the second ends of a second pair of parallel augers. The bearing housings are connected to each other by a tie bar. A single support leg extends downwardly from approximately the mid-section of the tie bar to engage the ground ledge that is formed between the counter rotating augers.

Abstract: The invention concerns a drill including a generally cylindrical body, tipped with a head and provided, over at least part of its length, generally spiral evaporating grooves. The groove(s) are delimited, over at least part of their length, by a succession of facets, attached to one another, and linked to one another by sharp edges or by radius blends.

Abstract: A cutting auger has a main auger blade and a front subsidiary coaxial blade each having a drive core and a helical auger flight carried on the drive core for rotation about a longitudinal axis of the drive core with a cutting edge at an axial end face of the auger flight, such that when rotated the cutting edge cuts a hole equal in diameter to the helical flight and the helical flight carries the cut material away from the cutting edge. The second auger blade having a smaller diameter than the first, is shorter than the first and is arranged with the helical turns thereof in opposed angular direction. A planetary drive system is arranged to rotate the first and second cutting augers in opposed direction with the first driven at a slower angular velocity than the second so as to balance the torque.

Abstract: The present invention describes a drilling and anchoring device for diverse application, which possess as a basic principle to provide the formation of a specific drilling and anchoring device of the most diverse products to soils, fully based on a lower penetration device in order to fully optimize both processes by directly eliminating excavations and high efforts, having as a basis a drilling and anchoring device incorporating a proprietary structure of high durability and strength possessing a properly integrated and attached main supporting body, a lower penetration device, a central rotating device and, as an option, an upper fitting device, so as to form a structure whose shape and internal and external arrangement directly adapts itself to the most diverse types of soils and products in general.

Abstract: Bits for use in drilling with a well completion string having a bit body and a cutting face that includes a plurality of sets of cutter elements mounted on the cutting face. The bit body has a central longitudinal bore having an integrated female non-shouldered, standard oilfield completion string thread. The bits are designed with minimal cutter coverage, and this combined with the integrated completion string thread allows for economical completion of a well with high ROP expected from a PDC type bit. In an additional embodiment, a bit comprises a bit body and a cutting face having integrated cutting structures.

Abstract: A hollow auger head assembly for penetrating geological formations that utilizes drill bit assemblies to which both blades and finger bits are attached. The method of securing the individual drill bit assemblies to the auger head reduces incidents of the drill bit assembly becoming detached from the auger head during drilling operations. Additionally, a rust-resistant attachment mechanism is used attach the drill bit assemblies to the auger head, which makes the drill bit assemblies easier to remove and replace. The configuration and arrangement of the bits improves cutting efficiency, increases wear life and reduces the likelihood of the bits breaking during operation.