Abstract: A rotor adapted for use in a hydrodynamic device comprising a cylindrical screen having a circumferentially continuous apertured zone. The rotor has an axis of rotation and includes a substantially cylindrical outer surface adjacent the cylindrical screen surface. The rotor further includes a plurality of sets of a plurality of adjacent vane members supported above a substantially cylindrical outer surface of a rotor by a plurality of brackets. The rotor has an axis of rotation and is mounted within and co-axial with the cylindrical screen to define an annular screening chamber between the rotor and the screen. The sets are equally spaced apart in a direction circumferential to the rotor axis, and the vane members extend the length of the screening chamber parallel to the rotor axis.

Abstract: A die assembly adapted to be attached to one of a wrench first arm and a wrench second arm. The die assembly includes a die having a pipe facing front spaced apart from but parallel to the pipe longitudinal axis, a wrench facing rear, and two spaced apart opposed sides, each connected to the die front and die rear. The die is thick on one side and thin on the other side so that the die facing front has a face that recedes from the pipe from one edge to the other edge so that contact between the die facing front varies depending upon the diameter of the pipe. The die rear also has a convex curve so that the die has a thick mid section.

Abstract: More particularly, this invention provides an excavating lip assembly including a lip. The lip has a surface, and the lip assembly further includes a wear member placed over the lip surface, the wear member having an inner surface, and the inner surface having a bolt securing indentation therein. The lip assembly further includes a holding element in the lip surface, the holding element having an opening there through. The lip assembly also includes a connecting bolt having an end received and held in the indentation, the connecting bolt also being received in the holding element opening. The lip assembly also includes a nut removably received on an end of the bolt to retain the bolt in the holding element opening. More particularly, the connecting bolt is a U-bolt, and wherein the indentation is formed by a half circle element extending from the shroud inner upper surface. The half circle element is cast in the wear element upper surface, and the holding element is a rectangular bar welded to the lip.

Abstract: Each crawler shoe comprises a main body having an upper surface, a lower surface, and opposite lateral sides and opposite front and rear sides. Each crawler shoe further includes a mechanism on the main body for articulately and releasably connecting the crawler shoe to an adjacent crawler shoe. Each crawler shoe further includes a roller path on the upper surface of the main body and drive lugs attached to the upper surface of the main body on opposite sides of the roller path. Each crawler shoe further includes an upward extending peening portion so that when a downward force is applied to the peening portion, unrestricted metal flow at the peening portion can occur in a first horizontal direction and in a second horizontal direction greater than 45 degrees from the first horizontal direction. More particularly, the peening portion is greater than 0.1 inch tall, and, in the preferred embodiment, about 0.25 inches tall.

Abstract: A cutting device including a cutting drum, a motor housing, a structural web extending between the motor housing and the cutting drum, and a structural member attached to the cutting drum adjacent the web. The structural member has a structural surface including an edge adjacent the web and an edge away from the web. The surface has an edge away from the web, the surface being inclined away from the web by having the edge adjacent the web forward in the cutting direction of the edge away from the web. In the preferred embodiment, the structural member is a bit mechanism including a bit, and the structural member houses the bit.

Abstract: The present invention provides a screw alignment device (10) for use with a screw driving tool and a screw (71) during a fastening operation, with said screw being of the type having a shank disposed between a screw head and a distal end, the screw driving tool being of the type having a shaft with a gripping formation at one end thereof and a screw engaging formation at the other end thereof for engagement with the screw head, said screw alignment device including a screw guide having a body of generally annular configuration formed from a resilient material and having an internal cavity (14) of generally frustoconical configuration tapering convergently towards a forward end of the screw guide (17); a tool guide (20) spaced rearwardly from the screw guide and aligned generally with the cone axis (18); and a connector which connects the screw guide to the tool guide; where, in use, a screw can be located in the screw guide so as to be aligned generally with the cone axis, the distal end of the screw projecti

Abstract: The invention provides a bolting installation apparatus comprising a base having a pair of parallel cylindrical rods held between two end plates; an intermediate carriage slidably mounted on said rods; a drilling unit carriage having at least one first rod and at least one second rod spaced apart from said first rod; a drilling unit slidably mounted on said second rod and said intermediate carriage slidably receiving said first rod of said drilling unit carriage; at least one moving means to move each of said base, said intermediate carriage and said drilling unit carriage relative to each other.

Abstract: This invention provides a roof bolt installation apparatus including a drill stabilizing mechanism including a base having a cylindrical bore therein, and a stabilizing rod extendable from the base and slidably located in the bore. The rod has a distal end, and a drill stabilizing end plate is mounted on the rod distal end. The roof bolt installation apparatus also includes a drilling unit which is adapted to rotatably carry a drill, the drilling unit being slidably mounted on the drill stabilizing mechanism, and a mechanism for moving the drilling unit along the drill stabilizing mechanism. The roof bolt installation apparatus also includes a drill depth control device including a base, a top adapted to engage the mine roof, and at least two bars connected between the drill depth control base and the drill depth control top. The bars pass through openings in the drill stabilizing plate.

Abstract: An assembly for mounting a cutter bit on a driven mechanism, the assembly comprising a bit having a bit tip, a bit sleeve including a holding portion adapted to receive the bit, a bore through the holding portion, and a bit holder. The assembly further includes a mounting base having a forward portion and a mounting base rear portion having an internal water passageway in communication with an upper opening for receiving an ignition control unit. The assembly further includes a rear surface having a spray nozzle cavity in the rear surface and open in a rearward direction. The spray nozzle cavity has an internal spray nozzle cavity water passageway-in communication with the mounting base rear portion internal water passageway. The assembly further includes a dust reduction unit including a spray nozzle comprising a base received in the spray nozzle cavity, the base having a spray nozzle base water passageway through the spray nozzle base and in communication with the spray nozzle receptacle water passageway.

Abstract: A conveying system for receiving and conveying material from a mobile material transporter adapted for travel on a floor, the conveying system comprising a main conveyor on the floor, and a main conveyor extension on the floor and having an upper surface. The main conveyor extension comprises a plurality of interconnected frame units, and means for supporting an endless conveyor belt on the interconnected frame units. The conveying system further includes an auxiliary conveyor in contact with and moveable over at least a part of the main conveyor extension upper surface. The auxiliary conveyor comprises a plurality of interconnected frame units identical to the frame units used in the main conveyor extension, means for supporting an endless conveyor belt on the auxiliary conveyor interconnected frame units, and means for driving the endless conveyor belt.

Abstract: A chain driven by two sprockets spaced a short distance apart along their common axial centerline. The chain includes elongated pins that extend beyond the outer surfaces of the chain link plates, on both sides, by a distance about equal to the width of the spaced apart sprockets. The chain is aligned midway between the sprockets, and the sprocket teeth drive on the extended portion of the chain pins. Where a flight is attached to the chain links, the pins are extended still further, to fit into the indentations or holes in the flights. This provides an exposed length of each pin in alignment with the sprocket on each side for driving purposes.

Abstract: A material conveying system capable of traversing a floor along a curvilinear path, the system comprising a plurality of framework members arranged in tandem on the surface along a portion of the path to form an elongated longitudinally extending conveyor train; and connector means on each framework member cooperate with connector means on each adjacent framework member for coupling the plurality of framework members, the connector means permitting movement between adjacent framework members. The conveying system also includes a plurality of the framework members including a crawler chain assembly comprising a plurality of crawler chain pads interconnected by chain links to form an endless loop. The crawler chain assembly extends over a lower portion of each of the plurality of framework members wherein the crawler chain pads are maintained in engagement with the floor, and over an upper portion having an upper surface that supports the chain pads.

Abstract: The present invention provides a mining apparatus for installing bolts into a mine entry, said apparatus including: a frame having a forward end, a rearward end and lateral sides; an upstanding bolter support wall attached to said forward end of said frame; a laterally extending guide frame mounted to said support wall which extends along a lateral plane which is generally parallel to the support wall; at least one bolting rig slidably mounted to said guide frame; and translation means for selectively moving the bolting rig laterally along the guide frame relative to the support wall.

Abstract: This invention provides a winding machine comprising a support drum, a winding tube at least partially supported on the support drum, and a web of material being wound around the winding tube to form a web reel in response to rotation of the support drum and the web reel, the point where the web reel rotates into contact with the support drum being called the nip. The winding machine further includes a nip safety guard comprising a finger presence sensor, a support mechanism supporting the finger presence sensor adjacent one of the web reel and the support drum, and a moving mechanism that moves and locates the finger presence sensor support mechanism depending on the size of the web reel so that the finger presence sensor is located closely adjacent the one of the web reel and the support drum and spaced a safe distance from the nip. The safety guard moving mechanism further includes a control for determining the size of the web reel and operating the moving mechanism to position the finger sensor.

Abstract: A chain and flight conveyor adapted to be driven by a toothed sprocket comprising a pair of spaced apart, parallel driving chains, each of the driving chains comprising roller links having at least one end surface which may be drivingly engaged by the teeth of the sprocket. The roller links also have internal apertures defining drive surfaces which may be drivingly engaged by the teeth of the sprocket. The driving chains further include connecting links coupled to and interconnecting the roller links; and pins pivotally connecting the connecting links to the roller links. A predetermined corresponding number of the pins on each of the chains comprises extended flight attachment pins having pin extensions facing the opposite chain. A plurality of conveying flights are connected between the corresponding number of the pin extensions, the flights comprising a bar member having two opposite ends, four sides and a bottom surface.

Abstract: A tension adjustment assembly for a tracked vehicle, the tracked vehicle including a frame, an endless track, a track-engaging wheel supported by the frame, and a second track-engaging wheel supported by the frame in spaced relation to the first track-engaging wheel. The first track-engaging wheel and the second track-engaging wheel are rotatable about a first axis and a second axis, respectively. The endless track extends about the first track-engaging wheel and the second track-engaging wheel, and the track has a tension. The first track-engaging wheel is movable relative to the frame in a direction perpendicular to the first axis to adjust the tension of the track. The assembly further comprises a tension adjustment mechanism connected to the first track-engaging wheel and operable to move the first track-engaging wheel, the tension adjustment mechanism including a rotatable member rotatable about a rotational axis to cause movement of the first track-engaging wheel relative to the frame.

Abstract: A movable machine including a frame having an end, an electrical motor on the frame, a cable electrically connected to the motor and adapted to be connected to a source of power, and a sheave bracket assembly mounted on the frame end. The sheave bracket assembly includes a mounting plate, two spaced apart sheaves rotatably mounted on the mounting plate, the cable extending between the sheaves, and hinged arms connecting the mounting plate to the frame end for permitting pivotal movement of the mounting plate relative to the frame.

Abstract: An apparatus for killing insects, the apparatus including an electrical mechanism for killing insects, an inner shell, the inner shell being surrounded by the electrical mechanism, and a mosquito attracting device within the inner shell. The insect attracting device includes a fan, a heat source, and a source of CO2. The inner shell has a plurality of openings in the inner shell for ejecting heated air and CO2 from within the inner shell, the openings being formed by indentations in the surface of the inner shell, each indentation being open at one end so as to form an opening which lies substantially perpendicularly to the extending axis of the inner shell. The insect attracting device further includes a mechanism for closing the source of CO2 and for stopping the fan when the temperature within the inner shell goes below the temperature. The insect attracting device further includes a moisture source, and an insect attractant.

Abstract: A blast hole drill comprising a mast including two parallel mast cords, a carriage, and a rotary head mounted on the carriage and adapted to engage a drill pipe. The rotary head includes a drive pinion on a rack on one of the mast cords, and the drive pinion is on one side of at least one of the mast cords. A backup wheel assembly is on the opposite side of the respective mast cord opposite the pinion and includes a wheel holding assembly support rotatably supporting a backup wheel, a yoke having an opening through the yoke, a plunger threadably received in the yoke opening, the wheel assembly support being slidably received on the plunger, and Belleville washers extending around the plunger and between the yoke and the wheel holding assembly support, the Belleville washers extending between an abutment on the plunger and the wheel holding assembly support.

Abstract: The invention provides an apparatus (2) for installing bolts into a mine entry, said apparatus including: a frame (8) having a forward end (20), a rearward end and lateral sides; at least one bolting rig (140, 142, 144, 146) operatively mounted to said forward end of said frame; at least one roof support member attached to said forward end of said frame (8) separate from said bolting rig (140, 142, 144, 146) for selectively supporting said mine entry as bolts are installed therein; and an operator station (990) on said frame for supporting an operator thereon during operation of said at least one roof support member.