Abstract: Disclosed are small model pit launch horizontal direction drills suitable for drilling a substantially horizontal bore hole and laying pipe underground from within a surface dug pit. The devices comprise a stationary frame and a carriage component competent to move forward and back along the frame and drill and retrieve an attached drill stem through an aperture in the frame. The carriage components are configured to allow an operator to straddle the carriage and operate the device from a seated position within the frame component interior.

Abstract: Provided is a novel drilling apparatus for drilling into prepared ground surfaces and natural ground conditions. The apparatus includes a mast assembly, a support structure assembly flexibly coupled with the mast assembly, a plurality of drill assemblies affixed to the support structure assembly, and a frame. Also provided is a method of drilling into a ground surface, by providing a drilling apparatus having a mast assembly, a support structure assembly flexibly coupled with the mast assembly, a plurality of drill assemblies affixed to the support structure assembly, and a frame. Each of the drill assemblies include a hollow drill rod with a drill bit at one end, the bit having exterior cutting elements and interior fluid diverters. Pressurized fluid and torque is supplied to the drill rods, and by means of the mast assembly and support structure assembly the drill rods are moved downward so that using the downward and rotational force, and the pressurized fluid, the drill bits drill into the ground surface.

Abstract: A machine for excavating rock includes a frame, a cutting device, and a boom. The cutting device includes a cutting disc having a cutting edge, and the cutting disc is rotatable about a cutting device axis. The boom supports the cutting device and includes a first end, a second end, and a boom axis substantially parallel to the cutting device axis. The boom further includes a first portion and a second portion. The first portion is coupled to the frame for rotation about a first pivot axis between a raised position and a lowered position. The second portion is coupled to the cutting device, and the second portion is pivotable about a second pivot axis between a raised position and a lowered position.

Abstract: A rack rail is suspended into a silo from an opening formed in a ceiling portion of the silo and a lifting body is lowered into the silo along the rack rail from the opening. A work scaffold is built on the lifting body using a part carried into the silo from the opening, a worker connected to the work scaffold with a safety belt pokes and breaks down a granular powder in a state where a discharge port of a silo bottom portion is closed, the poked and broken down granular powder drops to a rat hole (or boring hole), the worker connected to the work scaffold with the safety belt adds a rack rail in a state where the rat hole is blocked with the granular powder, the discharge port is opened to discharge the granular powder stored in the passage, and then the work scaffold is lowered to the added rack rail.

Abstract: A method of upsetting an axle with a peen tool according to one example of the present disclosure includes contacting a distal end surface of the peen tool with a first terminal end of the axle. The distal end surface of the peen tool has a relief portion formed on the distal end surface that includes a concave profile. An area of the axle is displaced based on the contacting.

Abstract: An electrical wrench includes a motor, a transmission mechanism, a ratchet assembly and a controlling member coupled to each other. The transmission mechanism is configured to provide idle travels. The ratchet assembly receives the rotating torque output by the transmission mechanism and drives the ratchet therein in a single direction. The controlling member is connected with the motor and controls the motor to rotate in the opposite direction when detecting the motor is stalled. The electrical wrench thus provides impacting action by electrical control and simplifies the mechanical structure of the tool, which not only reduces the manufacturing cost, but also prolongs the working life of the tool.

Abstract: A pile driver assembly consisting of a plurality of pile driver units interconnected together to a rigid base frame that uses the push and pull method to drive a group of raked piles. The pile driver units progressively push one pile at a time for a short distance into the ground while being pull down by the rest of the stationary driven piles in a repeated cyclical driving sequence until the required pile driving force is reached for every pile in the group. The pile driver assembly consists a plurality of interconnected pile driver units, a pile driver base adaptor, a pile clamping system and strong base frame to drive the piles in a two dimensional array of variously raked pile group from 1V:1H to true vertical in the z-axis and rotated to any angle in the x-y plane at a minimum pile's spacing of three times the pile's diameter.

Abstract: A compliant shifting mechanism can change the operation of a power tool between first and second operating conditions. The shifting mechanism can provide two distinct forces on a gear set during movement of the gear set between the two operating conditions. The shifting mechanism can provide a user with a tactile sensation of the completion of the transition between the two operating conditions without the gear set completing the full transition. A shifting mechanism can automatically complete the change between operating conditions, regardless of an alignment between the gear set and another component. The two distinct forces can be a torsional resistance force and a bending resistance force.

Abstract: A drill rig is provided which has a mobile trolley having a telescopically extendible post for locking it in position relative to the hanging wall in an underground mine. The post supports in articulated manner, at least one and generally two vertically and laterally spaced drill booms adjustable in position at least within limits relative to the height of the post. A third drill boom may operatively be supported by the trolley itself in a lower-most position. The trolley is preferably supported on driven wheels and the drills, post, and any drive motors are preferably hydraulically driven by high pressure water.

Abstract: An apparatus for drilling short and long holes and for fitting bolts to the short holes has a generally stationary support positioned adjacent the face and a turret angularly displaceable on the support between two end positions about a longitudinal turret axis. A drill slide longitudinally displaceable on the turret carries a drill having a rotatable stem centered on a drill axis parallel to the turret axis. A drill bit can be fitted to the stem. A bolt slide longitudinally displaceable on the turret adjacent the drill slide carries a bolting unit having a ram centered on a bolt axis. A magazine mounted on the support adjacent the turret has a plurality of seats adapted to hold the bolts and extension rods fittable between the bit and the drill stem, depending on whether the device is to be used for short-hold drilling and bolting or for long-hole drilling.

Abstract: Pneumatically actuated horizontal drilling apparatus includes a base frame with a plurality of horizontally extending drills adjustably secured thereto, and the base frame and the drills are pneumatically actuated on a selective basis. Horizontal movement of the apparatus is accomplished by a pneumatic motor, and movement of the drills, both outward from the apparatus for drilling, and inward from the work for retraction, as well as rotation of the drills themselves, is also accomplished pneumatically and selectively. The drill apparatus is maintained at a predetermined distance from the work while drilling operations are taking place and while horizontal movement of the apparatus is taking place by means of canted wheels rotating in the vertical plane and by horizontally rotating wheels disposed against the work to be drilled.

Abstract: An apparatus for providing a reciprocating motion. The apparatus has a housing block that contains two movable arms in spaced apart relationship to one another. The movable arms are each controlled by independently attached fluid driven actuator cylinders that are mounted externally of the housing block. Tools for the altering of a workpiece may be attached to one or both ends of the movable arms. An embodiment utilizes a rack and pinion gear arrangement to immobilize any imbalance in forces that may exist when the movable arms are biased against a workpiece.

Abstract: An apparatus for providing a reciprocating motion. The apparatus has a housing block that contains two movable arms in spaced apart relationship to one another. The movable arms each contain a rack gear connected to a common pinion gear. One movable arm is driven by a fluid actuated cylinder. The driven movable arm then produces an equal and opposite motion in the other arm because of the interconnection of the pinion gear. Tools for altering of a workpiece may be attached to one or both ends of the movable arms. An embodiment utilizes the rotation of the pinion gear shaft to cause a translation of the entire apparatus away from a workpiece.

Abstract: Method for driving a hydraulic submerged tool whereby the hydraulic pressure energy is generated in a submerged power converter, being driven by pressurized surrounding water which after the energy transfer is exhausted into the surrounding water, said power converter consisting of one or more work cylinders (1, 2), each by means of a floating piston (3, 4) being divided in a space (5, 6) filled with the pressurized surrounding water and a space (7, 8), filled with a hydraulic work medium, switching means (17, 18) being provided, for alternately connecting said space (5, 6) either to a feed conduct (13) for pressurized surrounding water, or to an exhaust (14).

Abstract: This invention is a machine for ventilating roof decks which, without such ventilation, entraps moisture which leads to reduced insulating capacity, deterioration and the like. This ventilating device includes a mobile carriage, an extensible lift and an impact head along with associated operating mechanisms.

Abstract: Apparatus for drilling horizontal holes includes a frame for holding a drill, and the frame is supported by a single wheel adjacent to the drill and dual wheels at the opposite end of the frame from the drill. A cable system is utilized for moving the drill inwardly toward the work and outwardly away from the work by a single operator. A single operator can also move the frame as required at the work site. Multiple drills may also be secured to the frame, so that a plurality of holes may be drilled substantially simultaneously.

Abstract: Apparatus for breaking concrete and asphalt pavement and the like comprising a frame adapted to be supported by and above pavement to be broken. Power operated means move the frame in one and opposite directions relative to and in parallel relationship with the pavement. A plurality of air hammers are supported in a gang parallel arrangement by the frame with their cutting tools aligned in a closely spaced parallel series. Cutting ends of the tools are adjacent the pavement with the series of tools extending in one direction and frame movement occurs in a direction substantially at right angles relative thereto. Thus, the frame movement defines a predetermined generally rectangular path of movement and pavement breaking operation of the cutting tools. A cradle on the frame is moveable relative to the frame for adjusting both the height and the angle of attack of the cutting tools relative to the pavement.

Abstract: A driving pole for a ground rod or the like is provided wherein the ground rod is positioned in the hollow interior and driven into the ground in increments. Vertically spaced cross pins provide incremental stops for engaging the top of the ground rod for driving the rod into the ground as the pole is forced downwardly. The cross pins are preferably mounted on a bracket and spring biased into engagement tending to force the pin into the stop position. After each driving increment, the pole is raised, preferably with a rapid movement, the ground rod moves downwardly relative to the pole and the next lower pin 20 snaps into position for engagement with the top of the rod for driving. The biasing spring is mounted within the U-shaped bracket and a handle is provided for retracting the pins with a latch for holding the pins in the retracted position for insertion of the ground rod.

Abstract: An orbital tool assembly for forming rivet heads has a housing attached to a driven member rotatable upon a first axis, the housing having a bore along a second axis at an acute angle to the first axis. A head having an axis coincident with the second axis and including a fluid pressure chamber is retained within the housing with bearings interposed. A coaxial driver on the head has a plurality of bores parallel to the second axis in communication with the pressure chamber, and mounts a reciprocal peening tool holder in each bore, supporting an axial peening tool. An anti-rotation arm at one end extends at right angles to the driver and is secured thereto with its other end engaging a bracket, the arm being free for rocking movements in a plane passing through the first and second axes. Rotation of the head oscillates the peening tools in the rocking plane, the peening tools being in operative engagement with unheaded rivets.

Abstract: A roof drilling and bolting device comprising a mobile chassis and two cabs mounted to the front of the chassis for independent transverse (outward to the side) movement. The cabs have floors and protective canopies. Extensible hydraulic devices position the cabs outwardly of the chassis. Other extensible hydraulic devices raise and lower the cabs relative to the chassis. Mounted to the front of each cab is a drilling assembly including a rectilinear positioning device for drill pods which provides up-down and side-to-side movement of the drill pod in front of the cab. An extensible standard is positioned by a boom which extends forward of the chassis to provide a temporary roof support.

Abstract: Drilling equipment comprises a single boom supporting a plurality of drilling masts each provided with a drilling machine, adjustment means being provided to simultaneously adjust the relative positions of the drilling masts.

Abstract: An operator cab and drilling assembly for a roof drilling and bolting device. The cab comprises a floor and a canopy having extensible hydraulic means for adjusting the distance between the cab floor and at least the front edge of the canopy. A horizontal rail extends along the entire length of the front edge of the floor and is spaced therefrom. A roof bolting and drilling apparatus slidably engages the horizontal rail. The rail is mounted by swinging arms to always be parallel to the cab floor.

Abstract: An operator controlled roof bolter with a flexible shaft drill and a roof bolt inserter for drilling and inserting a roof bolt into an unsupported roof of a mine while the operator is positioned at an outby station under a supported roof. The flexible shaft roof drill is constrained to a frame of the roof bolter for pivoting movement between a rest position and a working position. The roof bolt inserter is mounted on a slide for linear movement and limited rotational movement between a retracted position and an extended position for positioning a roof bolt held by the inserter into registration with a hole drilled by the roof drill.

Abstract: A rock bolting apparatus is shown in which a rock drill and a rock bolt setting device are interchangeable on the same elongated guide of a feed beam. When the rock drill is in operative position on the feed beam, the bolt setting device hangs on the side of the feed beam and vice versa.

Abstract: A drilling machine is disclosed for use in providing bolt holes in concrete stadium riser steps and the like. The drilling machine includes a relatively stationary base plate, and a foot plate slideable upon the base plate along a predetermined path. The foot plate carries drill mounting means for mounting a plurality of commercially available drills. An operating lever moves the foot plate, drill mounting device and drills toward and away from a vertical drilling face over the base plate.

Abstract: A tunneling machine is described which uses an array of impact tools for cutting a deep kerf that defines the wall of the tunnel. The impact tool provides impact blows through drill steels to which drill bits are attached. A substantial portion of the drill steels extend through webs which provide bearing support and alignment for the drill steels and bits on a dynamic basis while the kerf is being cut and the webs also permit the drill steel to bend; thus providing clearance between the impact tool and the wall of the tunnel. The webs also provide control of the sideways motion of the bit, while at the same time, providing for full impact blows to be delivered to the working face.

Abstract: A method for driving tunnels in rounds is disclosed in which, after each round, the tunnel is left with an inclined transition to the floor. In the subsequent round, a cut is opened up in the transition towards the floor and the tunnel face is then stepwise drilled and blasted in cycles until the roof is reached and the round is completed. A machine for carrying out the method is disclosed which comprises a plurality of drill-and-blast units that are mounted on a frame that is pivotable about a transverse horizontal axis.

Abstract: A support displaceable along a tunnel or gallery floor by means of a caterpillar drive is provided with a rotatable milling tool that can be brought into engagement with a lower portion of a face wall and with a reciprocal hammer engageable with an upper portion of the wall. The miller is operated to cut or grind material off the lower portion so as to undercut the wall. Then the hammer is operated to chip or break off the upper portion of the undercut wall. Both the miller and hammer are mounted on adjustable and directable arms. The loosened rock is carried off by a scoop-transport belt arrangement.

Abstract: A method and apparatus for guiding and sealing a drill string during drilling. The drill string is formed with an increased diameter at the portions where two adjacent rods are connected. The guiding and sealing of the rods is maintained by means of hydraulically operated guide jaws in a drill rod centralizer. The increased diameter portions are guided and sealed by means of tubular members located rearwardly and forwardly of said jaws. The drill rod centralizer is mounted on a saddle which is slidable along a feed bar. The drill rod centralizer is connected to means for removing drill dust and may be provided with a tubular portion for guiding the drill bit during collaring of a new hole.

Abstract: A truck provided with drill units to drill the end wall of a tunnel under excavation, this truck being characterized by having a support for the drill units, which is pivoted about a transverse axis relative to the vehicle body to provide adjustment of the inclination of the support in relation to the inclination of the end wall to be drilled, to allow adjustment of the overall height of the truck for tunnels of different heights, and to provide a better load distribution to allow faster travel. This support is pivotally connected to provide automatic and constant aiming of the drill units in parallel rearwardly pointing relationship.

Abstract: Apparatus for drilling holes and installing roof bolts therein for the support of a mine roof includes a prime mover operably connected to a mobile body portion having a pair of spaced apart individually operated drill units. Each drill unit is movably supported on a horizontal frame portion of the mobile body portion by a carriage. The carriage is reciprocally mounted on a plurality of parallel spaced transversely extending beam members that are rigidly secured to the horizontal frame portion. A fluid actuated piston cylinder assembly connected to the carriage is operable to transversely move the carriage with the drill unit along a path transverse to the longitudinal axis of the mobile body portion for drilling holes at preselected spaced intervals in the mine roof. The movement of the carriage is remotely controlled from an operator's station that is protected by an overhead canopy.