Abstract: The disclosure provides an earth auger comprising a supporting assembly, a drill pipe assembly including a drill pipe, a driving assembly arranged on the supporting assembly to drive the drill pipe assembly to work and a brake assembly including a trigger component that brakes the driving assembly and a brake lever connected through a first pivot and matched with the trigger component. The projection part of the brake lever on the plane perpendicular to the axis of the drill pipe is located outside the projection of the supporting assembly on the plane perpendicular to the axis of the drill pipe. The earth auger provided by the disclosure can effectively prevent accidents and improve the safety performance of the earth auger.

Abstract: A hole boring device includes a housing including a proximal end, an open distal end, and a bore extending longitudinally from the distal end to the proximal end. An inlet connectable to a pressurized water source is disposed on the proximal end of the housing. A spraying device in fluid communication with the inlet is disposed in the bore and is oriented towards the open distal end of the housing. The spraying device is configured discharge a stream of water passing therethrough so as to form a boring stream configured to bore a hole in a ground surface. In some embodiments, the spraying device is configured to rotatably discharge the pressurized stream of water. A depth collar disposed annularly about the housing defines the depth of the bored hole. A slot disposed along the housing allows debris from the boring process to exit the housing, leaving an empty bored hole.

Abstract: The present invention is a digging auger. The digging auger comprises a shaft with a proximal end and a distal end. The digging auger also comprises a screw extending from the proximal end to the distal end of the shaft. The digging auger further comprises a paddle attachment adapted to be removably attached at the proximal end of the shaft. The paddle attachment comprises two pieces of rubber strips arranged on opposing sides of the shaft and extending generally radially outwards therefrom.

Abstract: The present invention comprises a fishing ice hole flaring apparatus having a triangle-shaped base that that includes a pair of hinged arms each having a cutting blade attached thereto, a central shaft having a first end and a second end, the central shaft extending through the apex region of the triangle-shaped base proximal the first end, a pair of retraction cable attached to a portion of their corresponding hinged arms, a cable housing attached to a portion of the central shaft and running parallel to the central shaft and supporting a portion of each of the retraction cables therein, a cable retraction knob attached to the first ends of the retraction cables, the cable retraction knob operable to move the pivotably move the hinges arms between a retracted position and an in use position, and a z-shaped cranking handle system manually rotatably power the apparatus.

Abstract: Dry tooling and ice climbing training apparatus and systems. A climbing apparatus includes a handle and an anchoring appendage extending at an acute angle less than 85 degrees to the handle. An anchor receiver can include an aperture in the anchor receiver corresponding in shape to the anchoring appendage of the climbing apparatus to temporarily secure the climbing apparatus to the anchor receiver. The anchor receiver can be affixed to a surface of a structure, such as successive surfaces of an upright surface. An anchor receiver can include multiple apertures for use with different angled surfaces.

Abstract: A sharpener for an ice screw with a tubular shank and a bit, comprising: a fixed sharpening support equipped with a file in the form of an elongate blade, a positioning slide of the ice screw at predefined angles with respect to the file, said slide being able to move in translation astride the two opposite surfaces of the file, and guiding and stopping means of the bit in the slide comprising at least one opening for inserting the shank and a securing stud salient from the associated opening.

Abstract: A steel pipe pile includes an elongated cylindrical steel pipe pile body with an open end and a helical wing fixed on an outer circumference of the pile body at a predetermined height range from the open end. The wing includes a wing edge extending outward from the outer circumference of the open end, and a wing body extending continuously with the wing edge and extending helically along the outer circumference and toward an upper side of the pile body. The open end includes an opening slanted in a radial direction of the pile body and a distal backside that is defined by a remaining circumference of the pile body. An upper end of the slanted opening is above the wing edge, and the distal backside has a point intersecting with a line orthogonal to a line connecting the wing edge and a center of the pile body.

Abstract: A system for tracking a navigated instrument. The system can include a first elongated instrument and a second elongated instrument. The first elongated instrument can have a first proximal end and a first distal end. The first elongated instrument can be adapted to be positioned relative to an anatomy. The second elongated instrument can move adjacent to the first elongated instrument. The second elongated instrument can have a second proximal end and a second distal end. The system can also include at least one tracking device coupled to the second elongated instrument. When the second elongated instrument is in a first position, the at least one tracking device tracks the first distal end of the first elongated instrument, and when the second elongated instrument is in a second position, the at least one tracking device tracks the second distal end of the second elongated instrument.

Abstract: An electric auger including an auger assembly with a coupling assembly at a proximal end, a cutting assembly having at least one cutting blade located at a distal end, and a helical flight located between the proximal end and the distal end. The electric power head includes an A/C motor with a drive shaft configured to mechanically couple with the proximal end of the auger assembly. An on-board 36-volt DC battery pack powers the A/C motor. A controller includes an inverter that converts DC power to A/C power for the A/C motor. The ratio of cubic inches of ice cut per battery ampere-hour per weight in pounds of the electric auger is at least about 900 (inches3/ampere-hour/pounds).

Abstract: A spade-type drilling tool designed for drilling holes within an ice surface for the purposes of ice fishing, comprising a spade end which is welded onto the end of a shaft. The length of the shaft is sufficient to provide an ergonomically comfortable posture for a user while drilling the fishing hole. A first side of the lower end of the spade comprises a straight knife edge, while a second opposite side is provided with a plurality of sharp cutting teeth. A sharp pointed bit, protruding beyond the lower line of the knife edge and the teeth, is located on a vertical centerline along the faces of the spade. The sharp point of the bit is intended to provide a means for punching a starter hole within the ice, and subsequently, to function as a pilot during the progressing drilling operation. The tool is provided with a circular shield, designed to slip over and clamp onto the shaft, thereby preventing water and ice particles from splashing back up onto the user.

Abstract: An ice auger attachment for attaching an ice auger to and operating the ice auger from a vehicle, such as an ATV. The ice auger attachment generally includes a support frame attached to a front end of the vehicle, a carriage assembly movable vertically along the support frame, and a motorized ice auger supported by the carriage assembly in a vertical orientation, the ice auger adapted to move vertically along the support frame with the carriage assembly. The carriage assembly and ice auger are generally raised and lowered via a winch, cable, and pulley operable from the seat of the vehicle. The ice auger may also be operated from the seat of the vehicle via a control unit that engages the motor of the ice auger. Various structures may be utilized to apply downward pressure structures upon the carriage assembly to ensure proper functioning of the ice auger.

Abstract: Apparatus and methods for drilling a hole. A hybrid powered and manual auger is disclosed. The auger may include one or more cutting blades coupled to a drive shaft driven by a motor. The auger may further include a manual crank configured to rotate the motor and the drive shaft about a drive axis. The manual crank comprises a U-shaped offset formed by an upper crank arm and a lower crank arm joined by a crank handle portion. The drive shaft can be rotated by the motor alone, by rotation of the manual crank alone, and by a combination of the motor and rotation of the manual crank.

Abstract: A drilling bit for penetrating an iceberg a predetermined distance to establish an anchor point for towing the iceberg to a predetermined location. The drilling bit has three sections for achieving its goal. It has a cutting head, a torque transmission body and a driving end for coupling to a power-twisting device which energizes the bit. The bit has separate passageways therein to permit the bit to remove water and ice produced by the cutting head during a drilling operation. The drill has a passageway for circulating liquid nitrogen therein to cause the water remaining in the hole to freeze to the drill bit solidly into the iceberg. The drill bit is also provided with a heating coil resistor to melt the area where the bit is held captive by the frozen ice.

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 device is designed for optionally connecting a crank (3) and a motor shaft with a drill rod (2) of a tool for drilling holes through thick outdoor ice, on lakes and the like, by rotating the drill rod, for converting the tool between a tool for hand driven and a tool for motor driven drilling. The device has for this sake locking members for locking the crank and the motor shaft, respectively, to the drill rod, which are releasably arranged for removing the crank and the motor shaft, respectively, from the drill rod.

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 drilling bit for penetrating an iceberg a predetermined distance to establish an anchor point for towing the iceberg to a predetermined location. The drilling bit has three sections for achieving its goal. It has a cutting head, a torque transmission body and a driving end for coupling to a power-twisting device which energizes the bit. The bit has separate passageways therein to permit the bit to remove water and ice produced by the cutting head during a drilling operation. The drill has a passageway for circulating liquid nitrogen therein to cause the water remaining in the hole to freeze to the drill bit solidly into the iceberg. The drill bit is also provided with a heating coil resistor to melt the area where the bit is held captive by the frozen ice.

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: A small, inexpensive, lightweight vehicle in the nature of a wheeled buggy is provided for movement over frozen bodies of water such as ponds and lakes, with the vehicle being powered by a gasoline engine which is alternatively used to power an ice auger.

Abstract: An ice auger covering apparatus includes a housing that has a bottom wall and a peripheral wall that is attached to and extends upwardly from the bottom wall. The housing has a break therein so that the housing includes a first portion and a second portion. The first and second portions are hingedly coupled together and biased toward each other in a closed position. A plurality of blade engaging members is provided. Each of the blade engaging members is configured to receive an edge of a bottom blade. The blade engaging members are attached to an inner surface of the peripheral wall. A pointed end of the ice auger is extendable into the housing and bottom blades of the auger engaged with the blade engaging members so that the housing covers the pointed end and the bottom blades.

Abstract: A horizontal bore cryogenic drilling method includes in a first embodiment forming a pilot hole of a first select diameter along a desired path of the horizontal bore. A grindable casing is inserted into the guide bore. A cryogenic fluid is flowed through the grindable casing to form a freeze zone of frozen moisture adjacent the grindable casing having a second select diameter. A primary bore is formed having a third select diameter greater than the first diameter and less than the second select diameter within the freeze zone along the desired path of the horizontal bore with the grindable casing in place. The second diameter is selected to be sufficiently greater than the third select diameter to prevent collapse of the freeze zone. Another embodiment of the invention is a method of forming a horizontal bore in an earth formation including providing a drill string having a conduit communicating with a cutting tool for engaging the earth formation.

Abstract: An ice auger includes a drive member, an upright bar, and a saw barrel. The drive member is coupled with a top end of the bar, and a bottom of the bar is coupled with a top center of the saw barrel, which is circular mug-shaped with a downward opening. The saw barrel has pores at its top side, saw blades on its bottom fringe, and a chipping-ejecting blade upward spirally extended from an outer sharp edge of each said saw blade along its outer periphery. Whereby, the ice auger of a preferably simplified structure is provided.

Abstract: The field of invention relates to ice auger that connects a standard battery operated drill to an adapter that connects a standard battery operated drill to an ice auger. Description of the prior art—Ice augers are known in the prior art and have been extensively utilized by fisherman during winter. To the best of my knowledge, there are no other patents comparable to the Easy Auger Adapter.

Abstract: An ice auger shroud system for directing debris produced during the drilling of an ice hole in a controlled direction from the operator. The ice auger shroud system includes a shroud member comprised of an elongate tubular structure having a first end and a second end, a side opening within the shroud member, a handle attached to the shroud member, a first strap and a second strap attached to the upper end of the shroud member, an elongate protective strip attached about an outer edge of the flighting of the auger member of the ice auger, and a deflector member attached to the upper portion of the flighting. The deflector member pushes the ice debris out from within the interior of the shroud member through the side opening in a desired location.

Abstract: An auger for drilling fishing holes in ice on a body of water has an elongated shank supporting a continuous helical flight and a plurality of partially helical scoop-like members having leading generally radial edges, ice cutting blades releasably fastened to the members adjacent their leading edges having outer portions that extend radially outward from outer edges of the members supporting the blades and serrated forward cutting edges, and a positioning pin secured to the lowermost end of the shank for drilling a positioning hole in the ice.

Abstract: An ice auger system for drilling a bore within ice with significantly reduced ice shavings. The ice auger system includes an elongate tube having a lower end, an upper end, an outer wall, a lumen and a connector shaft attached to the upper end for connecting to a motor. A length of flighting is attached to the outer surface of the elongate tube in a coiled manner. At least one bit is attached to the lower end of the elongate tube for engaging and cutting the ice in a circular pattern to receive the elongate tube and flighting. As the elongate tube is manipulated through the ice, a core is created that is positioned within the lumen of the elongate tube. When the user has drilled completely through the ice, the user then removes the elongate tube from the ice leaving the core within the newly created bore within the ice. The user then either may remove the core from the bore, or may push the core downwardly through the bore underneath the ice.

Abstract: A method and apparatus for unplugging a well or pipe obstructed by a gas hydrates. According to the invention, a moving heating element is applied against one end of the hydrate plug, and is displaced axially in the tube or the pipe towards the other end, so as to cause the plug to melt progressively from one end to the other. Application to the oil industry, in particular in off-shore wells.

Abstract: A submarine antenna assembly comprises a tubular body having a removable end cap, a mast stowable in the body and extendible therefrom and having elements mounted thereon, a penetrator stowable in the body and movable therefrom by the mast upon removal of the end cap, the penetrator being adapted to bore through an ice layer, and an inflatable ring stowable in the body and movable therefrom by the mast upon the removal of the end cap. First and second capsules are in the body for retaining and releasing gas, the first capsule being adapted upon opening thereof to pressurize the body to blow off the end cap to permit movement of the mast, the ring, and penetrator out of body, and the second capsule being adapted to inflate the ring to hold the penetrator in engagement with an undersurface of the ice layer. An electronics assembly is disposed in the body and includes message retention and transmitting means in communication with the mast, and timer means in communication with the capsules.

Abstract: A deployable buoy having a nose cone and a tail section interconnected by a housing. The buoy comprises an outer shell and a canister with the outer shell axially moveable relative to the canister. An expansion chamber is provided between the outer shell and canister to produce and increase the axial length of the buoy and thereby increase the buoyancy of the buoy from a low buoyancy to a greater buoyancy and to orient and maintain the buoy in a substantially vertical orientation. The buoy is provided with a hot fluid generation source to melt a layer of ice and a nose cone ejection system to expose an antenna for the transmission of data to the central processing system.

Abstract: Disclosed is a device for boring holes in ice having a vertical boring position and a horizontal carrying position. The device is comprised of a drive unit with an output, a rotatable shank portion and auger portion coupled to the output. A non-driven grasping portion is connected to the drive unit and configured such that the device has a balance point at the grasping portion whereby the device may be carried in a balanced horizontal position with one hand. In a preferred embodiment a hollow cylindrical portion with a flange attaches to the drive unit and the shank portion extends through the cylindrical portion and is coupled to the out in the cylindrical portion. The grasping portion may either be the cylindrical portion or a separate bar portion attached to the cylindrical portions.

Abstract: Using a standard ice auger having a central shaft, a spiral flighting affixed thereon, and an ice cutting blade at the lower end of the flighting, a cylindrical ice hole is bored through an ice sheet. The inventive apparatus, mounted adjacent a lower portion of the standard ice auger, is then used to form an inverted funnel-shaped area at the lower end of the cylindrical ice hole. The inventive apparatus includes a bracket mounted to the ice auger and an ice hole flaring blade pivotally mounted to the bracket. A spring biases the ice hole flaring blade toward a transport position wherein the blade has its free end extending toward an upper end of the ice auger. The ice hole flaring blade is pivotable to an operable position wherein the blade is aligned generally below the ice cutting blade of the auger and has its free end extending downwardly and outwardly from the central shaft of the ice auger.

Abstract: An auger bit for boring ski post holes having an elongated shank with a drill head fixed at a first end of the shank. The preferred drill head has diametrically opposed first and second open chip mouths, each defined by an advancing face and a trailing face of the drill head. The advancing face of the drill head may be oriented at a vertical rake angle and at a radial advance angle for propelling debris proximally from the drill head into and through the first and second chip mouths into first and second chip throats. The bit may include first and second excavating helices wound around the shank for a given number of rotations each at a given helix angle whereby first and second chip throats are formed. The second excavating helix may wind around the shank for a lesser number of rotations than does the first whereby a unitary chip throat succeeds the first and second chip throats. Preferably, the bit has an overall length greater than about fifteen inches and a shank which is hollow.

Abstract: An ice cutting instrument for beveling the ice around the bottom of a hole cut in the ice on a lake, which is driven by a motorized power unit. A vertical power shaft supports a cutting blade which can be adjusted between a position near the shaft to an angled position by a control rod extending along the shaft. The shaft carries one or more spacing devices to center it in the hole. The instrument is inserted in the hole, the blade is extended, and the power unit is then energized to rotate the instrument, which is then pulled upwardly to cut the enlarged opening.

Abstract: Disclosed is a device for boring holes in ice having a vertical boring position and a horizontal carrying position. The device is comprised of a drive unit with an output, a rotatable shank portion and auger portion coupled to the output. A non-driven grasping portion is connected to the drive unit and configured such that the device has a balance point at the grasping portion whereby the device may be carried in a balanced horizontal position with one hand. In a preferred embodiment a hollow cylindrical portion with a flange attaches to the drive unit and the shank portion extends through the cylindrical portion and is coupled to the out in the cylindrical portion. The grasping portion may either be the cylindrical portion or a separate bar portion attached to the cylindrical portions.

Abstract: A device for producing a small (approx. 1" diameter) penetration through quickly. The device is a penetrator having a conical shape. The penetrator includes a ceramic cone having spiral grooves that house a high resistance wire. The wire supplies heat upon being energized. A high thermal dielectric and a metallic shroud are placed over the cone and wire to provide uniform heating to the surrounding area and to prevent short-circuiting of the device.

Abstract: An ice auger conversion apparatus has an ice auger support and steering mounting member and a winch connected to the ice auger support and steering mounting member. A ring conversion member detachably connects to the winch. A winch drive motor connects to a driven end of the winch. A winch drive socket conversion member connects to a driving end of the winch. One end of a drive conversion adapter member removingly connects to the winch drive socket and another end of the drive conversion adapter member removingly connects to an ice auger shaft member. An ice auger removably connects to the ice auger shaft member. The ice auger support and steering member also has a mounting plate attached to the winch and a steering handle member attached to the mounting plate. A power circuit attaches to the steering handle member to provide power to the winch drive motor. The power circuit has a power circuit actuation switch and a power source.

Abstract: A submarine-launched, ice-penetrating sonobuoy is disclosed. The buoy is pedo-shaped with a collapsible obturator tail-fin section removably attached at the tail-end, standard electronics in a mid-section and an explosive nose cone at the front. Immediately after launch, the tail-fin section expands to exert a drag on the buoy to halt any forward motion. The tail-fin section is discarded and the nose cone and mid-section portion rise until the nose impacts the underside of the ice. Upon impact, a pre-selected "shape" charge ruptures the ice and an a spring-antenna, connected to the mid-section, is raised through the hole.

Abstract: A one piece, panel-like and generally diametric blade is mounted upon one end of a shaft portion for rotation therewith. The blade is generally S-shaped in configuration as viewed along the center axis of the shaft portion and includes a pair of inner and outer cutting blade edges extending along each of the wing portions of the blade disposed on opposite sides of the shaft portion. The inner ends of the inner cutting blade edges terminate a spaced distance outwardly of the center axis of the shaft portion, the inner and outer cutting blade edges are each outwardly inclined away from the axial direction of the shaft portion in which the blade edges face.

Abstract: Improved ice penetrator apparatus includes protective apparatus for the thermochemical ice penetrator to prevent an undesired explosive sound producing chemical reaction between water and the material of said ice penetrator, particularly while the penetrator is resident in a buoy tube prior to release. The protective apparatus at least partially covers the thermochemical ice penetrator and forms a unitary assembly therewith. The characteristic of the protective material is such that it is non-reactive to the ice penetrator material, typically lithium and/or a sodium lithium alloy, and to water. The protective apparatus may assume any of a diving bell, clam shell and banana skin structural form.

Abstract: A reamer consisting of an elongate body having a first end and a second end. At least one blade is secured to the first end of the elongate body. The blade is movable between an extended position wherein the blade extends radially at an angle from the elongate body and a retracted position wherein the blade is drawn in toward the elongate body. A handle is provided at the second end of the elongate body. The elongate body is inserted through a hole with the blade in the retracted position and then manually rotated to ream a remove end of the hole with the blade in the extended position. A lever is provided adjacent the handle at the second end of the elongate body for moving the blade between the extended position and the retracted position.

Abstract: A method is described for melting ice, e.g. for penetrating ice, snow, frozen soils and other low melting solid materials where frozen water is a principal constituent. It comprises directly contacting the material to be melted with a melting agent comprising at least one compound selected from the hydroxides, monoxides, methoxides and amides of the alkali metals, lithium, sodium, potassium, rubidium and cesium. Mixtures of at least two of these compounds are preferably used to form ice melting compositions of specific characteristics.

Abstract: Ice auger cutters include a shaft having a handle connected to one end for rotating the shaft about its axis, cutting elements secured to an opposite end of the shaft positioned radially outwardly from the axis, and an adjustable stop coaxially positioned between the cutting elements to control the penetration or feed rate of the cutter according to the density and temperature of the ice and strength of the operator.

Abstract: An autonomous ice penetrator/payload delivery system is provided which, when once launched from its parent vehicle will, upon reaching the surface of the ice automatically right itself to proper orientation with respect to the ice surface for penetration. A modified solid propellant rocket engine is used as the heat source to penetrate the ice rapidly and automatically is ignited upon the ice pentrator/payload containment vessel attaining proper orientation with its longitudinal axis substantially normal to the ice surface. The hot gasses of combustion produced by the modified rocket engine impinge upon the ice thereby melting it. As the ice is melted and penetrated, the penetrator/payload containment vessel will follow the receding ice surface either by gravity, or by motive forces provided by the modified rocket engine, or both.

Abstract: An ice auger conversion kit is mounted to a conventional grass-timming apparatus that includes an engine mounted rearwardly of a drive shaft housing with a drive shaft mounted therethrough. The forward end of the drive shaft is of a square drive configuration and is received within a square bore of a rotatable boss coaxially mounted through an adapter head, wherein a forwardmost end of the adapter head includes an axially extending threaded second boss for mounting the ice auger cutting head. The adapter head includes a series of gears to effect a gear reduction therethrough to enhance torque and effect appropriate speed of the ice auger head in use.

Abstract: A fisherman's ice auger has a hollow tubular body with an open end and a closed end, and a support pivotably retaining a crank handle in either of a deployed position, for cranking the body about its axis, and a stowed position wherein the crank handle is pivoted back along the body for gripping and transporting the ice auger. Helical webs on an outside of the tubular body, extending helically away from the open end. Preferably-replaceable cutters are mounted at the ends of the helical webs. A removable cap overfits the open end of the body, closing off the inside of the tubular body and defining a receptacle for carrying ice fishing articles, and also protecting the cutters. The cutters have a disc-shaped or spade-shaped blade attached to the leading edge of a shoe mounted on the open end of the tubular body.

Abstract: An apparatus and method are described for penetrating ice. The apparatus comprises: (a) a confined thermochemical reaction chamber having an inlet opening and an outlet opening and containing therein a substantially immobilized first thermochemical reactant, (b) flow means connected to said inlet for delivering an aqueous second thermochemical reactant to said reaction chamber for exothermal reaction with the first reactant, and (c) said outlet opening comprising discharge means for delivering hot thermochemical reaction product including hot aqueous fluid and/or steam into contact with the ice to be melted and penetrated. In an alternative design, the inlet and outlet may be a single opening with a cyclic or oscillating exothermic reaction taking place within the reaction chamber.

Abstract: A conversion apparatus for use in combination with a chain saw is set forth wherein a housing includes a rotatable shaft for attachment of a left-hand helical flight ice auger wherein the shaft includes a plurality of bearings secured within either side of the housing with the shaft extending through the housing and formed with a sprocket housing for mating engagement with the chain saw sprocket. A depending extension of the housing includes a plurality of through extending apertures for accepting a plurality of spaced threaded connectors associated with a chain saw.

Abstract: A method and apparatus for cutting ice core specimens from a block or sheet f ice, the invention provides swivel cutter elements mounted on the cutter head of an ice coring auger. The swivel cutters each swing into an outwardly extending position against the force of a retracting spring on contact with ice to be cut, the outward movement of the cutters being due to reaction forces acting on the cutters caused by contact with the ice. A core specimen is thereby cut to a desired depth in the ice and advancement of the coring auger is then discontinued although rotation of the auger is continued. While auger rotation continues, each swivel cutter moves inwardly under the force of the retracting spring once the reactive forces caused by advancement of the auger into the ice no longer act on the cutters.

Abstract: An ice auger includes a pair of ice boring blades fixedly attached to the bottom of a straight inner auger drive bar. A brace and bit arrangement at the top of the drive bar is for rotating the drive bar and either forcing it down toward the ice to bore a cylindrical hole of predetermined diameter through the ice or to force it up away from the ice after the hole has been bored to ream out a portion of that hole to form an inverted funnel shape opening. A tubular outer sleeve surrounds the drive bar and is movable between an upper boring condition and a lower reaming condition with respect to the drive bar. Two slotted longitudinally extending ice reaming blades are pivotally mounted at their top portions to the ream control sleeve. A reaming blade camming support bar attached to a bottom portion of the drive bar carries camming pins slidable in the reaming blade slots.

Abstract: An ice auger driven manually by foot power through the instrumentality of a foot driven ratchet drive rotatably affixed to a set of bevel gears permanently mounted in a framework affixed to a stable base. An assymetrically shaped auger shaft with a rotatably mounted handle assembly and a permanently attached auger head is positioned vertically through, but not affixed to, the assymetrical bore of the horizontally positioned bevel gear permitting vertical movement of the shaft within the bore during operation. The combination of rotation created by the operation of the ratchet, the constant rotational force point on the auger shaft at the assymetrical bore of the horizontal bevel gear, combined with the simultaneous vertical movement of the auger shaft, results in a constantly changing point on the shaft where the bevel gear imparts rotational force. The vertical movement of the auger shaft is facilitated by the operator's downward pressure on the handle.