Abstract: A mining shovel including a frame having an upwardly support member. A boom extends upwardly and forwardly from the frame from a connecting end toward a distal end along a boom longitudinal axis. At least one first suspension cable has one end attached to the boom proximal the boom distal end and an opposing end attached to the support member. The at least one first suspension cable defines an angle relative to the boom longitudinal axis, wherein in tension, the at least one first suspension cable resists a first side load imposed on the boom.

Abstract: A device for digging and backfilling of ditches, in particular for laying pipes, comprising an automotive travelling mechanism (2) carrying a machine frame (4) with an upper structure, a boom (6) pivoted on the machine frame (4) and having a plurality of boom arms (8, 10, 12) connected with each other with hinges and an excavator bucket (16) pivoted on the free end of the boom (6) is provided with a milling/mixing rotor (22) mounted to the excavator bucket (16).

Abstract: A control system for an electric lift truck that controls a traction motor and a hydraulic pump motor is disclosed. The speed of rotation of both motors is controlled by a pulse width modulated current supplied from a battery source by the controller in direct response to a demand communicated to the controller through an interface manipulated by an operator. A pump driven by the pump motor supplies pressurized hydraulic fluid to a lift mechanism and a power assisted steering unit. A joystick with function switches mounted thereto is provided so that the operator steers with one hand while controlling truck propulsion and all functions of the lift mechanism with the other hand. The direct control of the pump motor speed enables a fully proportional control of the hydraulic system. The control system is a compact structure that requires minimal cabling and ensures that the hydraulic system operates with energy efficiency and minimal wear.

Abstract: A removable blade assembly with an attachment arm slidably mounted over the support boom of a trencher machine. The attachment arm is stabilized in place on the support boom with pressure point bolts. From the attachment arm extend an angle support and an extending support block to stabilize a stabilization post leading to the blade-pivot assembly. The blade-pivot assembly includes a blade assembly pivotally mounted on a triangular-shaped housing frame. The blade can be swiveled in each direction from the trencher machine to backfill debris as desired.

Abstract: The present invention relates to a bucket for a front-end loader. The bucket comprises a planer back and an elongated relatively narrow bottom panel that projects from the back. Extending upwardly and outwardly from the bottom panel is a pair of opposed triangular shaped sides. The triangular shaped sides and the bottom panel form a generally V-shaped forwardly converging bucket structure.

Abstract: An assembly for the attachment of an accessory to the boom of a working machine consists of a support block, quick-mounting devices attached to the block for mounting the accessory on the assembly and further on the working machine, a mounting bracket at the other end of the assembly, which mounting bracket consists of mounting devices for mounting the assembly removably on the boom or on the quick-mounting fixture attached to the boom. The support block and mounting bracket are attached to each other pivotally through spindle arms, and a power actuator is provided to swivel the support block and mounting bracket in relation to each other. To further improve the performance of the assembly, the support block consists of a rotating ring attached to the spindle arms, which rotating ring is rotatable in relation to the spindle arms, and further includes a support frame attached to the rotating ring, to which support frame the quick-mounting devices are attached.

Abstract: In earthmoving buckets, and more especially in deep buckets, the heel portion is subjected to excessive wear due to its extended shape rubbing or impinging upon excavation material while engaged in digging operations. The present invention teaches a bucket shape which reduces the wear of the heel portion while retaining bucket capacity by using a multiple radius design to define the shape in profile.

Abstract: A hydraulic working machine includes a bonnet assembly extending along a rear end and opposite sides of a cab on a revolving upper structure so as to cover an internal combustion engine, a cooling fan, a radiator, and a hydraulic pump. The bonnet assembly is composed of first to three bonnets. The first bonnet and the second bonnet each cover an upper portion and a side portion of the internal combustion engine. The third bonnet covers a hydraulic oil tank and a fuel tank for the internal combustion engine. The first bonnet can be opened and closed in the horizontal direction and hence makes no contact or interference with a seat in the cab. The horizontally openable first bonnet is disposed above a counterweight and hence does never interfere with the counterweight. With the bonnet assembly thus arranged, the components mounted in the upper structure can be readily exposed in condition ready to maintain without involving dismounting of the seat even when the revolving upper structure is small in size.

Abstract: A hydraulic excavator includes a revolving upper structure having a rear half swingable within the width of the machine. The revolving upper structure has a front portion on which a cab is disposed. An internal combustion engine is mounted in the rear of the cab. Various components including a direction control valve, a hydraulic oil tank, and a fuel tank are mounted alongside the cab. The revolving upper structure has a front end portion supporting thereon a bracket, and a boom pivotally mounted on the bracket for undertaking a swing motion within an angular range of an angle less than 180.degree.. The swing angle is so set as to extend over a greater extent on one side located close to the cab than on the other side remote from the cab. The revolving upper structure further includes a projecting portion swelling out into an area kept out of the swing range of the boom.

Abstract: An excavation bucket includes a bottom assembly which defines a scoop slot opening along a portion of the bottom assembly. The excavation bucket is useful for excavating material in a conventional manner in a first operating mode, and for fine-grading material in a novel manner in a second operating mode. When operating in the second operating mode the excavation bucket is capable of fine-grading adjacent buried objects without damaging the buried objects.

Abstract: A coupling device for connection between the operating arm of an excavator and an implement (e.g. bucket) has upper and lower supports and a tilting device having a hinge with a tilt central axis and a transmission gear mounted to the upper and lower supports for tilting of the implement and the lower support part. The gear is a worm gear which has a segment of a worm wheel which is rigidly connected to the upper support and has its center coinciding with the tilt central axis, and a worm screw rotatably journalled to the lower support and rotated by a reversible hydraulic motor to effect tilting about the tilt central axis.

Abstract: A characteristic feature of the invention lies in that the striking and sic teeth are so arranged on the working edge of the bucket that the distance between the axes of the striking teeth is (3.5-4.5)b while the distance from the working edge to the blade of the striking tooth exceeds the distance from said edge to the blade of the static tooth by (1-3) b where b=width of blade of the striking tooth.

Abstract: A backhoe operated bucket is provided with an opening containing a screen frame opposite its scraper blade equipped loading opening for separating coarse material contained by soil excavated from a pipeline ditch and depositing fine padding soil on a pipeline in the ditch. A motor driven eccentric supported by the screen frame vibrates the screen frame in several directions to achieve a separation of fine and coarse material, the latter being deposited in the ditch above the padding soil.

Abstract: An excavation bucket with a scoop provided at a bottom portion of the bucket to provided fine digging and grading of materials or trenches. The excavation bucket is particularly useful for digging trenches near utilities and finishing trenches at proper grade.

Abstract: An earth moving and tamping apparatus rig is provided which can backfill a trench and compact the backfill materials up to 95% compaction. A bucket and a vibrator are attached to a backhoe. The bucket retrieves the filling material and either dumps the material into a trench or sifts it through adjustable screening blades that form the bottom of the bucket. The apparatus includes a means to swivel the bucket 360.degree. with respect to the boom. The end of the bucket then compacts the filling materials into the trench. Each moving rig apparatus may also be equipped with an alternative two-bucket system, where one bucket fits inside the other one or is along side thereof. For trenches as wide as two feet to increase the area of dirt tamped, the two-bucket may be secured in juxtaposition to each other. For more narrow trenches, the second bucket may be closed inside the first bucket and the area tamped will only be the width of a single bucket.

Abstract: A bucket equipped with a mixing device for use in work for improving the soil of grounds such as road grounds, an excavation machine having such a bucket, and a soil improvement method using such an excavation machine. The bucket is equipped with a mixing device disposed therein, which device can be rotated by a motor whose number of revolutions per unit time is adjustable, and has an opening formed through the bottom surface thereof. Further, the bucket includes an injection device connected to an external, solidifying agent supply source.

Abstract: A bucket for digging a ditch by moving the bucket longitudinally of the proposed ditch, rather than in the usual transverse direction, includes a top wall, a bottom wall, a rear wall and a pair of side walls diverging forwardly from the rear wall to an open front end of the bucket, one of the side walls being planar and defining a sharp corner with the bottom wall, the other side wall having a curved bottom end whereby a round bottom ditch can be formed by dragging the sharp corner through the soil longitudinally of the proposed ditch in a first pass, and then making a second pass through the soil using the curved end of the bucket.

Abstract: A small utility tractor having a front-end loader which is modified to include a backhoe digger mounted on the front-end loader is disclosed. The backhoe digger is readily attached to or detached from the front-end loader to provide a digging function at the front of the tractor. The backhoe bucket is coupled to the front-end loader using an attachment device which releasably attaches the backhoe bucket to the front-end loader so that the backhoe bucket is located below the bottom of the front-end loader and the bucket front opening faces in the opposite direction to which the front-end loader opening faces.

Abstract: A backhoe-loader with a undercarriage resting on wheels and comprising at its front end a loader structure with a loader arm and a loading bucket and at the other end a superstructure revolving 360.degree. , a driver cab is mounted to one side of the superstructure and on the other side next to the driver cab there are provided power units and a mounting pad pivotable about a vertical shaft for the horizontal pivot shaft of an excavator boom. The boom is positionable in a raised state with the dipper arm collapsed and the implement in a forward-pointing rest position above the undercarriage and outside the field of view of the driver cab. A front mudguard is present in front of the mounting pad and functions as a rest for the implement, the loader structure is mounted asymmetrically relatively to the longitudinal center axis of the undercarriage on the cab side of the undercarriage, and the rest for the implement on the front mudguard is widened toward the middle of the undercarriage.

Abstract: A scoop for a mobile implement such as an excavator or an excavator-like device is made in two parts in the form of scoop sections able to be pivoted about parallel pivot axes by a piston and cylinder unit. The scoop includes an attachment head so that the scoop may be pivotally connected with a boom of the mobile implement. In order to pivot the entire scoop laterally, a further piston and cylinder unit is integrally provided for lateral pivoting of the entire scoop about a central pivot axis in the attachment head, the further piston and cylinder unit is connected at one end with a pivot point, preferably one of the pivot axes of one of the scoop sections, and at the other end with a lever. The lever is connected at one end with a pivot point, preferably the other respective one of the pivot axes on the other respective scoop section and the other end of the lever is connected via a link with a projection on the attachment head.

Abstract: The invention is an improvement in a machine such as a surface mining "shovel" having an arm, a bucket-like digging dipper and a brace. The latter is used to maintain a selected "rake angle" between the arm and the dipper. The brace has first and second end lugs and extends between the arm and the dipper. The improvement comprises a tube-like collar interposed between and connecting the lugs. At least the first end lug is positionally adjustable with respect to the collar so that the "rake angle" between the arm and the dipper may be readily selected. In a highly preferred embodiment, each end lug is threaded to an opposite end of the collar and better "vernier" adjustment of the rake angle results.