Abstract: A compact, open path vertical cable pulling apparatus, having a low center of gravity and composed of two detachable, single person hand-portable components. The apparatus is competent to pull cable horizontally through space underground with a pulling force in the range of at least about 20 to 100 tons using low pressure flow hydraulics and has utility in the cable pulling industries, including in the drilling and horizontal directional drilling industries, and as part of a method for pulling cable through space, including pulling cable through space in the pipe bursting and trenchless pipe replacement industries.

Abstract: A system and method for performing cutting operations with an agricultural implement includes a cutting member capable of cutting plant material supported on the agricultural implement. A vibration source is operatively coupled to the cutting member. The vibration source is configured to generate a vibrational output at an ultrasonic frequency which is transmitted to the cutting member. The vibrational output is propagated through at least a portion of the cutting member to vibrate the cutting member as the plant material is being severed during the performance of the cutting operation.

Abstract: A rollator having an auto brake system made of a rigid frame assembly, a pair of forward facing swivel wheels, a pair of rearward facing non-swivel wheels, a pair of support handles, a pair of momentary electrical switches, a seat member, a back-rest member and a pair of electro-mechanical brake assemblies. The electro-mechanical brake assemblies are mounted on the frame assembly just above each rearward facing non-swivel wheel. The momentary electrical switches are mounted on the support handles. The brake assembly is actively engaged when the momentary electrical switches are not pressed and unengaged when the momentary electrical switches are pressed by the user. A preferred embodiment includes a pair of LED lights mounted on the front end of each the support handle, the LED lights being aimable by the user.

Abstract: An eccentric weight system includes a first shaft rotatably supported at a first end by a first shaft support and rotatably supported at a second end by a second shaft support. The first and second shaft supports define a first axis of rotation of the shaft. An eccentric weight is supported by the first shaft and has a center of mass that is offset from the first axis of rotation. The eccentric weight is supported so as to be rotatable about a second axis of rotation relative to the first shaft with the second axis of rotation being offset from the first axis of rotation.

Abstract: A construction machine having a frame and at least one compaction member is provided. The machine also includes a propulsion system having a hydraulic motor adapted to rotate the compaction member. The propulsion system also includes a hydraulic pump fluidly coupled to the hydraulic motor via a high pressure line and a low pressure line. The high pressure line allows flow of a fluid at high pressure from the hydraulic pump to the hydraulic motor. The low pressure line allows flow of the fluid at low pressure from the hydraulic motor to the hydraulic pump. The propulsion system further includes a hydraulic valve fluidly coupled to the low pressure line and a casing of the hydraulic motor. The hydraulic valve selectively allows flow of a portion of the fluid at low pressure from the low pressure line to the casing for cooling of the hydraulic motor.

Abstract: The present invention relates to a laying machine for laying at least one flexible casing or tube, cable or wire including: a blade arrangement for making a trench in the ground, a consolidation and laying means being arranged behind the blade arrangement, for clearing and safe-guarding the trench from collapsing while laying at least one flexible casing or tube, cable or wire into the trench. A blade assembly comprising compartments for cooling fluid and air.

Abstract: A hydraulic circuit for an agricultural implement consisting of a hydraulic cylinder that exerts a force on a component of the implement. A pressure reduction valve located between a hydraulic power source and the hydraulic cylinder maintains pressure to no more than a preset maximum to protect the hydraulic cylinder by routing excess hydraulic fluid back through a hydraulic line into a reservoir. A pressure relief valve with a preset maximum pressure greater than that of the pressure reduction valve is located between the pressure reduction valve and the hydraulic cylinder, and is connected to the reservoir through a dedicated return line. If hydraulic fluid pressure in the circuit increases to greater than the maximum of the pressure reduction valve, hydraulic fluid is diverted back to the reservoir through the pressure relief valve and a dedicated return line.

Abstract: This invention discloses a power cable installation device, including a cart frame and an installation frame on the cart frame. An accommodation cavity is disposed at the bottom end face of the installation frame. The accommodation cavity is slidingly connected with a sliding base. Coordinated with the first elastic recovery device and the second elastic recovery device which are interconnected with opposite sides of the accommodation cavity, the sliding base will be more stable when sliding up and down. Meanwhile, with the locking and unlocking between a locking component in the first elastic recovery device and the second guide block, the sliding base will be more stable during the transportation of the cart frame. Thus, automatic control of transmission and driving of digging and drilling work can be achieved.

Abstract: Provided is a vibration damper for a high load, including: a vibration body support portion having first shaft support portions; rotation shafts that are rotatably installed at the first shaft support portions, have eccentric portions eccentric with respect to rotation centers of the rotation shafts and are spaced a predetermined gap from each other; a support portion having second shaft support portions on which the eccentric portions are rotatably supported; an elastic member that is installed between the vibration body support portion and the support portion or between the vibration body support portion and the second shaft support portions and that elastically supports the support portion with respect to the vibration body support portion in an upward direction; and a rotation synchronization unit that is installed at the rotation shafts so as to synchronize rotation directions of the rotation shafts according to vibration.

Abstract: A drilling system includes a drill string extendable into a wellbore penetrating a subterranean formation. The subterranean formation exhibits a resonant frequency and a drill bit is coupled to a distal end of the drill string. A vibration sub is positioned within the drill string adjacent the drill bit for generating vibration stress waves at the drill bit, and the vibration stress waves exhibit a vibration frequency that approximates the resonant frequency.

Abstract: A vibratory compactor that generates vibrations by rotation of eccentric masses is provided, which includes an inner eccentric rod positioned inside a roller drum of the vibratory compactor and provided with a rack formed on one side of the inner eccentric rod, a pinion engaged with the rack, a variable eccentric weight engaged with the pinion so that a distance between the variable eccentric weight and a rotation axis of the inner eccentric rod is changed as the pinion is rotated, and an outer eccentric tube including a hole formed thereon to guide movement of the rack back and forth and a support fixture formed thereon to fix a shaft of the pinion so that the pinion is rotated in engagement with the rack, wherein when the inner eccentric rod moves back and forth, the pinion that is engaged with the rack is rotated as much as the movement of the rack, and as a position of the variable eccentric weight is changed, an amplitude of vibration of the roller drum is changed.

Abstract: The present invention relates to a machine arranged for sawing micro trenches and placing ducts/cables in micro trenches, said machine comprising a saw blade arranged for sawing a micro trench in an area; said machine further comprising: a stabilizing device arranged for stabilizing the walls of said micro trench when placing ducts/cables into said micro trench, said stabilizing device being positioned immediately behind said saw blade in said micro trench, and said stabilizing device comprising guiding means for guiding at least one duct/cable when placed into said micro trench; said saw blade and said stabilizing device are arranged to be lowered and elevated independently of each other.

Abstract: A device that excavates soil from beneath buried utility pipe. The excavated soil is pushed out using a piston shaft actuated ram's head. The piston shaft is attached to a power shovel's bucket. The piston shaft is hydraulically operated. Soil from the excavated area, when pushed out, falls into a previously dug opposite trench that is deeper than the bucket side trench where the shovel bucket is positioned for the pushing operation. Once the soil is pushed out from beneath buried pipe, the pipe is now accessible for inspections.

Abstract: A compaction roller comprises a vibration device for generating vibrations when driven by a vibration motor; a pair of right and left traveling drive shafts, while traveling driving outside tires and their adjoining inside tires synchronously, for transmitting the vibrations of the vibration device to the outside tires and inside tires; a pair of right and left traveling motors respectively for driving their associated traveling drive shafts; and, a pair of right and left first support brackets mounted through a first vibration proof device 6 on a vehicle body and interposed between the outside tires and inside tires for supporting the traveling drive shafts through bearings, wherein the vibration device includes a vibration source disposed within the traveling drive shafts. According to the compaction roller, a side overhang can be eliminated or reduced, and enabling prevention of the lowered vibration compacting function of the tires.

Abstract: A plow apparatus has a share to cut soil into clods, a moldboard connected to the share to turn over the clods, a beam connecting the moldboard to a motor vehicle, a vibrator assembly connected to the moldboard so as to vibrate the moldboard, a force sensor connected to the beam so as to detect a plowing force, and a controller connected to the force sensor and the vibrator assembly so as to control a vibration of the vibrator assembly according to a force value detected by the force sensor.

Abstract: An apparatus including: a tubular suction pile; an indenter housing that surrounds the tubular suction pile, wherein the indenter housing is configured to: (a) be sunk into a seabed in response to a negative pressure created from water being removed from the tubular suction pile, and the indenter housing is configured to create a trench in the seabed; and comprise a water jetting device, within the indenter housing, that includes a first valve, a nozzle, and a channel that connects the first valve to the nozzle; and/or (b) impart a longitudinal vibration to the indenter housing and the indenter housing is configured to be sunk into a seabed in response to longitudinal vibration, and the indenter housing is configured to create a trench in the seabed.

Abstract: A ripping mechanism for a vehicle has a support frame. A ripping member has an engagement head that is configured for plowing a groove in the ground. The ripping member is preferably positionable in a selected working position and working orientation by adjustment of the support frame. The ripping member is preferably movable relative to the support frame to cause reciprocating movement of the engagement head at least partially longitudinally. A tilt adjustment cylinder is preferably operable to orient the ripping member in the selected orientation. A vibrator mechanism is preferably operatively connected to the ripping member and activatable to cause reciprocating movement of the engagement head at least partially longitudinally.

Abstract: A vibrator arrangement for producing material columns in the ground comprises an elongate vibrating body with an outer surface having a girth and at least one projection extending at least partially around the girth of the vibrating body. A method of producing a material column in the ground may use such a vibrator arrangement.

Abstract: A linkage assembly for a vibratory plow. A vibratory plow comprises a power unit and a vibratory plow assembly. The vibratory plow assembly has a linkage assembly to connect to the power unit. The linkage assembly comprises a lift trolley, an upper arm, a lower arm and a load transfer link. The upper arm is pivotally connected to an upper end of the lift trolley. The lower arm is pivotally connected to a lower end of the lift trolley. A vibrator assembly is connected to the upper arm and the lower arm and a plow assembly comprising a plow blade is connected to the vibrator assembly. The load transfer link is operatively connected to the upper arm and to the vibrator. The load transfer link may be a leaf spring with an intermediate link. Alternatively, the load transfer link may be a hydraulic cylinder or an elastomeric member.

Abstract: In an aspect of the invention a ripping mechanism for a vehicle is provided which includes a support frame, a ripping member and an impact mechanism, such as a vibrator, which is configured to reciprocate the ripping member forwardly and rearwardly about a transverse pivot axis. The ripping member is mounted within a sleeve that pivots with the ripping member about the pivot axis, while at the same time selectively permitting movement of the ripping member along the sleeve. The ripping member may thereby be raised or lowered relative to the sleeve in order to adjust the depth of the engagement head relative to the support frame.

Abstract: Included are embodiments of a power assisted garden tool. Some embodiments include a handle and an interchangeable tool implement including a garden tool end, a connection end, and an impact platform. Similarly, some embodiments include a drive mechanism coupled to the handle, the drive mechanism including a power source, a motor that provides rotational motion to a rotary shaft, and a piston coupled to the rotary shaft, the piston exhibiting reciprocating motion from the rotational motion, the piston making contact with the interchangeable tool implement, such that the reciprocating motion of the piston causes motion of the interchangeable tool implement.

Abstract: Included are embodiments of a power assisted garden tool. Some embodiments include a handle and an interchangeable tool implement including a garden tool end, a connection end, and an impact platform. Similarly, some embodiments include a drive mechanism coupled to the handle, the drive mechanism including a power source, a motor that provides rotational motion to a rotary shaft, and a piston coupled to the rotary shaft, the piston exhibiting reciprocating motion from the rotational motion, the piston making contact with the interchangeable tool implement, such that the reciprocating motion of the piston causes motion of the interchangeable tool implement.

Abstract: The invention relates to a drill for realizing a partially tapered bore hole in a soil covering a hardpan layer. The drill comprises a rotatable drivable unit that is provided with a carrying structure and a multiple number of cutting elements carried by the carrying structure. The multiple number of cutting elements are arranged along a line extending substantially radially and outwardly from a central axis of the rotatable drivable unit. Further, lower ends of cutting elements in a radial inner section are mainly positioned in a plane transversely to the rotation axis of the rotatable drivable unit. Lower ends of cutting elements in a radial outer section are mainly positioned in a downwardly tapered surface having a symmetry axis coinciding with the rotation axis of the rotatable drivable unit. The lower ends of the cutting elements may subscribe, during rotation, a truncated cone surface.

Abstract: Provided is a vibration-type nipper. The vibration-type nipper comprises a body including a vibration space and a coupling unit for coupling with a boom positioned at an upper portion or a fixing bracket of heavy equipment, a housing positioned in the vibration space and including a vibrator, a plurality of supporting member to opposite sides of the housing and the body corresponding to the housing and supporting the housing allowing the housing to vibrate, a nipper blade installed on the housing and extending downwards, and vibration-dampening member mounted on the body at an upper portion of the vibration space and distributing vibration generated when the housing collides with the body due to elevation of the housing.

Abstract: In an aspect of the invention a ripping mechanism for a vehicle is provided which includes a support frame, a ripping member, a vibrator mechanism, a pressure sensor, and a control system. The control system is configured to determine when the ripping member is engaged with hard material using the pressure sensor. When the ripping member is engaged with hard material, the control system is configured to permit operation of the vibrator mechanism. In some embodiments, the control system may further be configured to automatically start the vibrator mechanism when it detects that the ripping member is engaged with hard material. When the ripping member is not engaged with hard material, the control system is configured to deactivate the vibrator mechanism. In some embodiments, deactivation of the vibrator mechanism means that the control system turns off the vibrator mechanism.

Abstract: In an aspect, the invention is directed to a ripping mechanism for a vehicle. The ripping mechanism includes a support frame, a ripping member and an impact mechanism which is configured to reciprocate the ripping member forwardly and rearwardly. The impact mechanism is preferably a vibrator mechanism. In a particular embodiment, the ripping mechanism has a longitudinal axis, is mountable to the vehicle and is movable between a raised position and a lowered position. The ripping member has an engagement head that is configured for plowing a groove in the ground and that is pivotally supported on the support frame about a ripping member pivot axis that is positioned such that pivoting of the ripping member displaces the engagement head longitudinally. The impact mechanism is preferably a vibrator mechanism. The vibrator mechanism is connected to the ripping member wherein activation of the vibrator mechanism causes reciprocating pivoting movement of the ripping member.

Abstract: The present disclosure generally relates to a method and apparatus for installing utility lines underground by using a vibratory plow. One aspect of the invention relates to using a resilient member attached to a vibrator assembly, where the resilient member stores the kinetic energy of the vibrator assembly downward movement. The kinetic energy is then released during the upward movement. The energy is applied to a plow blade so as to improve the efficiency of the plow blade as it is drawn through the ground. Another aspect of the invention relates to connecting the resilient member to the ground via a set of wheels that do not appreciably deflect during the downward movement.

Abstract: A soil compaction device has a vibrated contact element that makes contact with the soil during a contact phase and that is exposed to a contact force exerted by the soil and travels over a contact distance. A dynamic stiffness of the soil is formed from the gradient of the contact force and from the contact distance. Furthermore, a contact surface parameter to take account of the actual contact surface of the contact element with the soil is determined. The dynamic deformation modulus is then the product of the contact surface parameter and the dynamic stiffness. The method allows the determination of the dynamic deformation modulus, and hence of the soil stiffness, during the compaction operation.

Abstract: A plow assembly includes a housing, a shaft having a first eccentricity and a shaft having a second eccentricity. The shaft having a first eccentricity is mounted within the housing for rotation about a first axis of rotation, and the shaft having a second eccentricity is mounted within the housing for rotation about a second axis of rotation. The assembly also includes a surface breaker blade and a balancing assembly. The surface breaker blade is mounted on the shaft having a first eccentricity in such a manner that rotation of the shaft having a first eccentricity causes the surface breaker blade to move in response to the first eccentricity of the shaft. The balancing assembly is mounted on the shaft having the second eccentricity in such a manner that rotation of the shaft having the second eccentricity causes the balancing assembly to move in response to the second eccentricity of the shaft.

Abstract: A linkage assembly for a vibratory plow. A vibratory plow comprises a power unit and a vibratory plow assembly. The vibratory plow assembly has a linkage assembly to connect to the power unit. The linkage assembly comprises a lift trolley, an upper arm, a lower arm and a load transfer link. The upper arm is pivotally connected to an upper end of the lift trolley. The lower arm is pivotally connected to a lower end of the lift trolley. A vibrator assembly is connected to the upper arm and the lower arm and a plow assembly comprising a plow blade is connected to the vibrator assembly. The load transfer link is operatively connected to the upper arm and to the vibrator. The load transfer link may be a leaf spring with an intermediate link. Alternatively, the load transfer link may be a hydraulic cylinder or an elastomeric member.

Abstract: One embodiment of the present invention pertains to a system, including a mechanical arm, an attachment member, an actuator, a power system, an electronic control, and an operator interface. The attachment member is tiltably mounted on the mechanical arm about a pivot joint. The actuator is operably connected to the attachment member for powering the attachment member to tilt about the pivot joint. The power system is operably connected to the actuator. The electronic control is operatively connected to the power system, and comprises an automatic vibration mechanism for causing the attachment member to vibrate automatically in response to an activation signal. The operator interface is in operable communication with the electronic control. The system comprises a default state and an activation state for causing the activation signal.

Abstract: A method and apparatus for controlling a work tool. The method and apparatus includes receiving a command to engage a vibratory mode of the work tool, actuating the vibratory mode, and increasing at least one of an amplitude and a frequency of vibration as a function of time during receipt of the command.

Abstract: In a compressor comprising at least one traveling drum (4,4a,4b) rotatable about a drum axis (2), and an oscillation exciter supported in the drum (4,4a, 4b), the angular position of the oscillation exciter being adjustable by an adjustable pivoting angle relative to a vertical plane which extends through the drum axis (2), it is provided that the oscillation exciter comprises a pendulum-type vibrator (10) having a pendulum-type housing (8) which pivots about a pivoting axis extending coaxially to the drum axis (2) and includes a single unbalance exciter shaft (12) supported at a radial parallel distance to the drum axis (2) in the pendulum-type housing (8), wherein the pendulum-type vibrator (10) generates an elliptical drum oscillation.

Abstract: A pulverizer for reducing the clumpiness or aggregation of soil into clumps or clods and for screening materials, the pulverizer having a frame mounting a substantially cylindrically configured screening drum for rotation and a scoop for aiding the delivery of the material to be pulverized or screened to the screening drum. The pulverizer may be mounted as an attachment onto an appropriate power source such as a tractor or a skid-steer loader.

Abstract: A vibratory device (10) for dispersing a topdressing and correcting the grain in greens. A deck (30) is supported by a frame (18) with a linkage (36) for raising and lowering the deck (30) with rest to the green. A shaker tray (76) is vibrated within the deck (30) by a vibrator (108) attached to the deck (30). A brush frame (94) is carried within the shaker tray (76) for vibrating against the tips of the grass blades in the green to shake the topdressing into the thatch and to straighten the grass blades. The linkage (36) to raise and lower the deck permits height adjustment of the brush frame (94) with respect to the grass blades so that the brush bristles (106) just tickle the tips minimizing injury to the grass.

Abstract: A vibratory roller unit for replacement of a reel cutting unit in a multiple deck lawn mower for conversion of the mower into a greensroller. The vibratory roller unit has a frame, vibratory roller and a power train. The frame, vibratory roller and power train are universal. Different motor attachment devices and lift and tow devices are provided to customize the vibratory roller unit for use with different makes and models of lawn mowers. The power train includes a jack shaft such that a motor for driving the vibratory roller is mounted on a side of the frame opposite a power take-off for driving the vibratory roller.

Abstract: A vibratory or static plow blade assembly including a blade for opening a slit in the ground, a chute assembly operably attached to the blade for being pulled through the slit in the ground and wherein the chute assembly includes a top opening for allowing an elongated product such as a utility line to be installed in the ground by being inserted into the chute assembly. A product exit point in the chute assembly is disposed below the top opening and internal guides are provided for directing the product to the exit point. At least one nozzle is provided adjacent the exit point for transferring a pressurized material into a desired contact with the product being installed in the ground. Conduits for transferring the pressurized material from above the ground to the nozzles are disposed within the chute assembly.

Abstract: A trenching plow adapted for attachment to a vehicle, the plow having an elongated shank having a blade formed along a lower portion of a leading edge of the shank, the blade having a first soil cutting surface along the leading edge, a first cutting arm pivotably arranged at a forward lower portion of one side of the shank generally parallel to the shank and a second cutting arm arranged at a forward lower portion of an opposite side of the shank generally parallel to the shank. Further, a drive means for reciprocating upper portions of the first arm and the second arm is used.

Abstract: A turnable self-propelled, walk-along tractor vehicle, such as a plow for burying tubing is provided. The tractor vehicle has a pair of drive wheels rotatably mounted on a fixed axle in the front of the vehicle, a back support means, a U-shaped turning bracket mounted to the sides of the tractor vehicle, and optionally a vibrating blade for cutting a trench in the earth coupled at the rear of the vehicle. The back support means is mounted to the tractor vehicle at a first position elevated with respect to the ground and is adapted to engage the ground at a second position when downward force is applied to the turning bracket. The turning bracket comprises first and second portions, which may be flat or tubular in shape, which extend rearwardly from the sides of the tractor vehicle and substantially horizontally with respect to the ground when the back support means is in the first position.

Abstract: An isolation mount having a first mounting surface arranged on a vehicle. The first surface has substantially vertical first mounting lugs arranged at a lower end of the first surface, and a first fastening device for holding at least one pair of resilient device. The resilient devices comprise first resilient portions and second resilient portions. The first fastening device is preferably arranged at a top end of the first surface. The isolation mount further has a pivoting device, which has a first side facing the first surface, a second side facing away from the first surface and substantially vertical second mounting lugs arranged at a lower end of the first side of the pivoting device. The second mounting lugs are attachable to the first mounting lugs via pins to form a first hinge, about which the pivoting device is pivotable. The pivoting device further has resilient device holding device arranged at a top end of the pivoting device.

Abstract: A vibratory apparatus, useful with a vibrated plow, cable layer or the like, includes a housing and a shaft mounted to the housing for rotation about a shaft axis. Counterrevolving first and second eccentric weights are supported by the shaft for rotation about such axis. A drive gear is fixed with respect to the shaft and another drive gear is fixed with respect to the second weight. A transition gear engages both drive gears for counter-rotation of the weights about the same axis of rotation. Most preferably, the weights are configured to “interdigitate” as the shaft and weights rotate. That is, as the weights rotate in opposite directions, the first weight passes through a cavity in the second weight. The drive gears and the transition gear are preferably bevel gears and form what might be termed a differential gear set.

Abstract: A depth gauge (30) is connected to a vibratory plow (10) for indicating the depth of a blade (13). The depth gauge (30) has a rod (31) pivotally connected to the housing (11). The rod (31) has a first end (31a), a second intermediate ground following portion (31b) and a second end (31c). An indicator bar (36) has its first end (36a) connected to the second end (31c) of the rod (31). A depth indicator (50) is provided. The second end of the rod (31c) is restrained for a general vertical movement proximate the depth indicator (50), wherein as the housing (11) is raised or lowered, the ground following portion (31b) stays in contact with the ground and results in pivotal movement of the rod (31) and thereby a vertical displacement of the indicator bar (36), thereby providing a depth gauge.

Abstract: A device for subjecting a shaft to a combined simple rotation and alternating rotation of limited extent about its own axis, the device including two supporting plates which rotate with the shaft coupled to a vibration generator and, between the plates, a part of a gear system which rotates freely with respect to the shaft and is associated with rotation actuation motor. Two first slotted holes are formed in each one of the plates so that they are diametrically opposite with respect to the shaft, the first slotted holes being arranged, upon assembly, at second slotted holes formed in the gear system, elastic compression springs being rigidly coupled between the first and the second slotted holes.

Abstract: A hole drilling apparatus facilitates the task of drilling holes in the ground at predetermined locations for the planting of replacement Christmas tree seedlings. The hole drilling apparatus includes a bifurcated frame having a base frame portion and a working frame portion pivotally mounted on the base frame portion. A spring mechanism operatively engages the working frame portion and the base frame portion to bias the working frame portion into a raised pivoted position. The working frame portion pivotally carries a work plate having an auger mechanism mounted thereon for pivotal movement in a vertical manner with the working frame portion to advance the auger mechanism into the ground during operation to drill a hole. The spring mechanism can be repositioned to release the biasing force exerted thereby and allow the apparatus to be converted into the compact transport position with the working frame portion lowered against the base frame portion to reduce the profile of the apparatus.

Abstract: A scarifier machine has a milling drum partially enclosed in a protective sump which is suspended from the frame of the machine by a linkage assembly. The protective sump of the scarifier machine is connected to the frame of the machine by shaking members which comprise a couple of hydraulic cylinders, each presenting a body that is fixed to the frame of the machine and an extremity of a stem that is fixed to the protective sump of the milling drum.

Abstract: A scarifier machine has a milling drum partially enclosed in a protective sump which is suspended from the frame of the machine by a linkage assembly. An eccentric drive reciprocates the sump relative to the frame.

Abstract: A cultivator attachment is mounted on a skid steer tractor and includes a main frame, a vertical receptacle attached to the frame to receive and attach to the mounting plate member of the skid steer tractor and a plurality of cultivator discs carried on the frame for working ground underneath the frame and forwardly of the skid steer tractor unit. Two rows of disk extend across the frame generally transverse to the forward direction. One of the rows of discs includes teeth projecting outwardly from at least some of the discs. Each row includes two disc sections arranged such that an axis of rotation of the discs is inclined to the forward direction and converge to an apex centrally of the frame. The disc sections are adjustable from a first position in which the apexes of the rows are adjacent to a second position in which the apexes are spaced apart so as to reverse the direction of cut of the discs and allow movement of the frame in a reverse direction opposite to the forward direction.

Abstract: The lawn edger is made up of a number of interconnected flat plates. One plate lies horizontally in use and has a forward cutting edge. A second plate is vertical in use and depends downwardly from one side edge of the horizontal plate. A third plate lies beside the horizontal plate and is disposed at an oblique angle to the vertical plate. That plate has a forward cutting edge. A fourth plate lies adjacent to the rear of the edger. The angle of that plate is such that it directs material which collects on the horizontal plate to move to the side thereof opposite the lateral plate. An electric motor having an eccentric cam bay be mounted on the edger for causing the edger to vibrate or to reciprocate.

Abstract: A hard surface preparation device for use in the removal of membranes, paving materials, flooring, tiles, roofing materials, and other materials from relatively hard surfaces such as concrete. The device includes two frames; a base frame and a second frame pivotally mounted to the base frame. The base frame is coupled to a small tractor by means of mounting brackets. The mounting brackets are bolted or otherwise secured to a moveable, powered mounting plate which is coupled to the hydraulically powered arms of the tractor, thereby permitting the device to be raised or lowered like any other front-end implement used with such a tractor. A motor or power take off from the tractor drives an eccentric shaft mounted on the base frame. A sleeve fits over the eccentric shaft and transforms the elliptical movement of the shaft into a back and forth motion. A blade mounted to the second frame is also coupled to the sleeve and, therefore oscillates when the motor is turned on.

Abstract: A new loader bucket vibrational sifting system for separating rock and other abrasive material from dirt extracted from a trench for a pipe line, thereby allowing the user to fill in the trench after laying the pipe with the sifted dirt eliminating contact by rock or other abrasive material with the pipeline and, thereby, preclude rusting, corrosion, or like damage. The inventive device includes a sifting structure formed to pivotally enclose a conventional loader bucket, a vibrating means secured near the pivoting end of the sifting structure for vibrating the sifting structure, and a hydraulic releasing means pivotally secured at one end to the sifting structure and pivotally secured at the opposite end to the conventional loader bucket manipulating the sifting structure to allow rocks to be released.