Abstract: A hand-held pneumatic-hydraulic drill unit employs modular drilling and clamp-up assemblies to perform a complete drilling cycle. The drilling cycle consists of: (1) clamping the drill unit to a work piece and/or a template that positions the drill unit relative to the workpiece; (2) advancing a rotating tool bit to perform the desired machining operation; (3) withdrawing the tool bit from the machined opening; and (4) releasing the clamping mechanism that secures the drill unit to the workpiece. The drill unit includes a pneumatic motor subassembly that is advanced toward and retracted from a workpiece by a hydraulically actuated feed cylinder. The motor subassembly and feed cylinder are axially aligned with one another. The clamp-up assembly of the drill unit also includes a clamp cylinder that is activated solely by hydraulic pressure. A modular, pneumatically actuated hydraulic pump is mounted on the drill unit and supplies pressurized hydraulic fluid to the feed and clamp cylinders.

Abstract: A turret for mining appliances comprises a girder serving as a guide for a drilling carriage and a bolting carriage, which is mounted to pivot and slide along an axis at the end of a support arm. The girder is integral with two bearings, mounted to rotate freely and to slide on a tube provided with an anchoring point and integral with a support box articulated on the arm. The two bearings are connected by a second tube which passes through a connecting-rod which is mounted to rotate but prevented from moving longitudinally on the first tube, the pivoting of the turret being controlled by a jack pivotally connected on the one hand to the box and on the other hand to the connecting-rod. The withdrawal of the girder is controlled by another jack housed partly in the first tube.

Abstract: A device for containing and removing drilling slurry includes a pair of concentric, annular, parallel side walls joined at like edges to an annular end wall to form an annular cavity therein. The opposed edges of the side walls are provided with annular sealing gaskets, the gasket on the inner wall being provided with radially extending intake slots. A vacuum fitting extends through the outer side wall to partially evacuate the cavity and to cause the device to adhere to a floor or wall surface. The end wall includes a central opening therethrough to receive a drilling bit or the like, the opening being slightly eccentric with respect to the axis and defining a shallow recess which retains liquid slurry. A pair of drain holes extend through the inner side wall at the shallow recess to remove accumulated slurry.

Abstract: A drill employed for drilling holes in airframes is provided with means to rotate the drill bit during retraction and means to control the rate of retraction of the drill bit from the hole in a manner to prevent the formation of axial scratches in the wall of the hole.

Abstract: A tractor assembly for mounting on a track fixed to a workpiece the tractor used to support and guide a metal-working tool along a fixed path, the tractor having three wheels to engage opposite edges of the track, one of said wheels being laterally displaceable to facilitate mounting of the tractor to the track. The invention also includes rest buttons or supports to facilitate alignment and mounting of the tractor and additional roller supports engageable to said track if needed.

Abstract: An apparatus for bolting the roof of an underground mine is disclosed comprising a mobile frame, a boom extending from the frame and a housing provided at the end of the frame. The housing supports an upwardly extending stinger, a drilling mechanism including a drill centralizer having a central bore therethrough and a passageway in communication with the central bore, a device for delivering a container of roof bolting anchoring media through the passageway and through the drill centralizer and into a drilled hole, a device for indexing a roof bolt into alignment with the drilled hole and a spinner for driving the roof bolt into the drilled hole. The present invention also provides a method for bolting the roof of an underground mine comprising the steps of stinging a housing against the roof of the mine, moving a drill centralizer into communication with the roof and drilling a hole in the roof.

Abstract: An apparatus for driving fasteners, drills, bits, and similar insertable objects into ceilings, trusses, and other remote structures, comprises a drive head mounted on one end of an elongate support. The drive head has a retainer for holding a fastener or bit, and is powered by a rotary drill, impact motor, or the like, which drives the fastener/bit into the object structure. A clamping arm is mounted at the upper end of the support, and is positioned to converge and diverge with the drive head. The drive head motor and clamp arm are controlled from the lower end of the support, whereby during operation, the clamping arm abuts the object structure at a side thereof opposite from the drive head and is converged with the drive head to apply tip pressure to the fastener/bit and resist reaction forces developed therebetween.

Abstract: A percussive-action pneumatic tool comprising a handle-carrying frame having successively accommodated therein a shock-absorber and a housing with the percussion mechanism therein, connected through a gas distribution system to a compressed air source. The frame has a length sufficient for abutting against the surface of a material being worked and has a guide which receives the housing with the percussion mechanism. The shock-absorber includes a receptacle mounted on the frame and communicating via a controllable valve alternatively with the compressed air source and the atmosphere, a rod being mounted in this receptacle, adapted to act upon the housing with the percussion mechanism, to move the housing relatively to the frame as compressed air is supplied into the receptacle.

Abstract: The collet-type drill includes improved clamping means having a pressure foot member that is in engagement with the work piece. The pressure foot member is connected with a drill motor and with a feed means. A collet is operably connected to and movable relative to the foot member, and when actuated, connects the drill to the work piece. A clamp bushing has one end pivotally connected with the collet and encircles a cylindrical sleeve that has a transverse slot extending therethrough. The bushing is connected to the pressure foot member. A clamping piston extends through the sleeve and carries a connecting pin that extends through the slot in the sleeve into the clamp bushing whereby the bushing and collet are movable together in response to movement of the clamping piston to force the collet into holding engagement with the work piece.

Abstract: A device for cutting an edge of a workpiece comprising, a drive head having a carrier, a support bracket connected to the drive head for fixing the drive head with respect to the working piece edge, a tool holder reciprocately movable in and by the drive head, an impact cutting tool connected to the tool holder for cutting the workpiece edge, and a guide sleeve rotatably mounted but fixable in position in the carrier for guiding the motion of the cutting tool. The guide sleeve is rotatable to rotate the cutting tool and bring different edges thereof into a cutting position. Depending on the shape of the cutting tool, a plurality of edges are provided which can be changed as they become dull by rotating the guide sleeve. The axis of a cutting end of the impact tool can also be offset from an axis of the sleeve and an axis of a clamping end of the cutting tool connected to the tool holder to vary the depth at which the edge of the workpiece is cut.

Abstract: The drilling apparatus includes a mount in the form of a cylindrical member defining an elongated passageway and being provided with two opposite guiding rails each being formed with an elongated recessed channel communicating with the passageway; a rotary drive for holding a drill rod has a non-rotating casing provided with guiding elements movable in the recesses of the guiding rails; a feeding mechanism for advancing the rotary drive includes either tooth racks arranged in the recesses of the guiding rails and driving pinions mounted on the casing of the rotary drive or cylinder and piston units located in the recesses of the guide rails and cooperating with feed cables or chains. The mount is supported on a mobile undercarriage which is provided with two pairs of vertically adjustable supporting legs.

Abstract: A portable earth core sampling machine has a principal supporting structure which is an upstanding hydraulic cylinder sub-assembly, comprising, a hydraulic cylinder serving as the principal vertical stationary body, a piston rod serving as the principal vertical extendable body, an elongated guide member secured to the exterior of the hydraulic cylinder, a sleeve slidable up and down the hydraulic cylinder along the elongated guide member, force transmitting tie rods secured between the extendable end of the piston rod and the sleeve, and a base, removably secured to the bottom of the hydraulic cylinder with radially extending legs terminating in receiving portions each holding a removable earth penetrating stake, and equipped to receive other subassemblies to complete the overall portable earth core sampling machine, such as: a hydraulic driving power unit subassembly mounted on the sleeve comprising, a driving hydraulic motor to rotate a hollow core digging auger; a transverse header box having a sheave mou

Abstract: A track guided carriage unit for selectively supporting a variety of work performing devices, tools and the like for movement along a predetermined working path, in which a supporting platform has spring loaded wheels that are releasably clamped by a manually operable handle into and out of engagement with opposed surfaces of a guide track, and wherein a motor driven pinion has adjustable meshing relation with a linear rack extending along the track, the pinion being operative to advance the platform at a predetermined rate of guided movement along the work path.

Abstract: A rock drilling bit for a pneumatic percussion hammer has a bit head and an anvil extending up from the bit head and slidable in the bit drive sub of the hammer. So the bit will be rotated with the hammer without unduly stressing the anvil, the upper part of the bit head is of non-round cross-section and slidable in a socket of corresponding cross-section in the bit drive sub. If the anvil is not integral with the bit head, but is screwed into it, the lower part of the anvil is of matching non-round cross-section so torque applied by the rotating hammer is applied equally to anvil and bit head.

Abstract: Apparatus for movably mounting and guiding rotary cutting equipment comprise an elongate track support having a circular cross-section, at least two distinct, mutually spaced elongate tracks extending along the track support and projecting from the track support beyond the periphery of the circular cross-section, a carriage for mounting rotary cutting equipment movable on the tracks along the elongate track support and equipment on the carriage and on the track support beyond the periphery of the circular cross-section for propelling, and for selectively arresting, the carriage relative to the tracks.

Abstract: Apparatus for sinking a borehole in the ground comprises a self-propelled displacement hammer having a tubular housing containing a percussion mechanism for driving the housing forwards, a follow-up tube arranged to be attached to the rear end of the housing and a bracing cable device arranged to be mounted on the rear end of the follow-up tube for exerting a push on the tube from a bracing cable. Preferably the bracing cable device includes a cable guide sheave which is journalled on a bearing piece at the rear end of the tube and the bearing piece also carries a clamping device for clamping a pulling rope, which in operation of the apparatus has one end fixed to the rear end of the housing and which extends upwards through the follow-up tube for withdrawing the hammer upwards through the follow-up tube from the borehole.

Abstract: The perforator body is provided with a built-in pulling winch whose drum is wound with a wire rope. The winch axle mounts a worm wheel meshing with the perforator box whose external surface is made in the form of a worm. The wire rope is secured to the rock and the perforator is fed progressively by rotation of the box.

Abstract: A stone and concrete cutting machine is described for performing cutting operations on stone or concrete surfaces. The machine includes an elongated base that is mountable to a stone or concrete surface through a bracket mechanism that is releasably received on the base. The base is comprised of one or more lengths of triangular cross-sectional tubing that provides rigid support for a truck mechanism movably mounted thereon. A number of rollers are rotatably mounted to a truck mechanism and engage three separate walls of the base to allow longitudinal movement of the truck mechanism along the length of the base. A hollow standard protrudes from the base to movably mount a cutting head carriage. A cutting head is mounted to the carriage through an adapter assembly that facilitates selective positioning of the cutting head on either of two sides of the standard.

Abstract: An apparatus with a motor driven material removing tool for cutting, drilling, milling, sawing or grinding of concrete, stone or the like. The apparatus comprises three spaced apart operational groups, namely a working group, a vacuum source and control group, and a driving group. The groups are mobile and interconnectable and disconnectable by hoses and electrical cables. The working group comprises an interchangeable tool, such as a drill, drive motor means for driving and advancing the tool, and a tool holding device mounted on the outside of a rigid suction bell. The vacuum and control group includes vacuum producing means and electrical and fluid control units. The driving group has at least one hydraulic pressure pump with motor means for generating the hydraulic power for driving and advancing the tool.

Abstract: A pre-cast, reinforced concrete manhole riser is provided with a precisely aligned porthole for a sewer pipe, by cutting the hole on the site, the resulting smooth-faced, unobstructed porthole being sealed by a flexible collar having one end clamped on the pipe and having a flange at the other end adhered to the riser around the cut hole. Apparatus for cutting the hole, on the site, clamps on the upper rim of the riser, there being a cutter and carriage which move relative to a clamped frame.

Abstract: A bedplate is rigidly affixed relative to the tunnel floor and includes a centrally disposed shaft extending upwardly therefrom. A rotatable base member is mounted on the bedplate for rotation about the central shaft. A boring machine adapted to bore upwardly is secured to the rotatable base member. The boring machine is swung upwardly along a selected arc of vertical circle and the base member is rotated to a selected azimuth. Following rotation, the rotatable base member is itself rigidly affixed relative to the tunnel floor.

Abstract: The Present heavy duty jig saw is constructed for cutting through walls of concrete, masonry, and the like. For this purpose a somewhat elongated suction bell carries a guide bar secured to one longer side of the bell. The guide bar in turn carries tool carrier means which are movable back and forth along the guide bar by a separate hydraulic drive. The tool carrier supports a tool head which is reciprocable by a second hydraulic drive. The suction bell is provided with a sealing skirt around its open edge and preferably adjustable legs secured to the bell limit the elastic deformation of the sealing skirt.

Abstract: A drill apparatus for providing a drain hole in curbing comprises a core drill mounted for longitudinal movement along a horizontal post held between a drill frame and a hooking member positioned in hooking relation with the curb. The horizontal post is tightened in compression while a pair of chains extend between the hooking member and the drill frame for holding the frame in firm contact with the curbing.

Abstract: A drill string is mounted on a mast which is angularly adjustable relative to a frame. A support is connected to the frame so as to be angularly adjustable and has an open aperture for the drill string. The support is to be mounted on and secured upon a stationary member, such as a pipe, disposed at the operating location of the drilling apparatus.

Abstract: A holding device for a manually portable drilling machine includes a detachable tension element which is attached at two mutually opposite points to a carrier member for the portable drilling machine, the tension element being sufficiently long to encircle at least the horizontal circumference of the object to be drilled at the vertical level of the hole to be drilled. In addition the device includes a resilient bracing means provided between the portable drilling machine and the tension element when the drilling machine is located at a drilling site and the tension element is secured to the carrier so as to be in tension around the object to be drilled.

Abstract: Feed frame assembly for supporting and feeding drill head which rotates drill rod about axis. Assembly includes spaced front and rear end members, laterally spaced longitudinal members and first and second hydraulic feed cylinders. Longitudinal members and feed cylinders extend between end members and are parallel to rod axis. Piston rods of feed cylinders have double-acting pistons cooperating with cylinder bodies to feed head along the piston rods. Stabilizer cylinders in longitudinal members force bearing pads against rock face to counteract the drilling forces. Head mounting means secures rigidly one side of drill head to first cylinder body, and secures releasably with latch opposite side of head to second cylinder body. When latch is released drill head can swing outwards about first piston rod, and when engaged mutual actuation of feed cylinders moves drill head along rods. With head swung out, first cylinder is hydraulically locked to divert fluid to second cylinder.