Abstract: A light weight treejack suitable for use in the woods at a tree felling site to harvest firewood, pulpwood, and the like, with a chain saw is easy to carry and set up by a single person. A bowed first legpiece is coupled at the top to a straight second legpiece comprising a hollow U-shaped pipe with an internally journalled threaded member rotatable with an upper manually operated handle to move a mating threaded rider up and down the pipe. The trees are supported by a chain about the trunk adjustable in height by the jack at a desired position along the trunk with attached branches on its treetop side aiding the jack to support the tree trunk at a comfortable level for using a chain saw without the danger of turning.

Abstract: A generally "S" shaped plate member is arranged for securement to a rod head plate of a rod that is extensibly and telescopingly mounted within a jack cylinder. The plate member is formed of a first plate, a second medial plate, and a third top plate, wherein the third top plate includes clamping structure to secure the third plate relative to the rod head plate.

Abstract: An apparatus which is mountable on a mechanic's dolly or fork lift includes a support plate which is bolted to the studs of a vehicle wheel hub for removing, repairing and/or replacing a vehicle wheel hub. The apparatus is fitted with adjustable tubular sockets for receiving varying spaced lift forks.

Abstract: A screw-type jack including an auxiliary screw barrel which is engaged with a ram cap at the uppermost stage. With that construction, this screw-type jack also has such function as to overlay an upper portion of a casing by the auxiliary screw barrel when the jack is contracted, in addition to widening the lift of the jack, whereby the case can be free from dirt and protected from damage.

Abstract: An apparatus wherein an elongate tube receives a threaded rod therewithin, wherein a medial sleeve including a threaded bore is rotatable to effect extension and retraction of the threaded rod relative to the tube. The tube and rod each include "J" shaped jaw member coaxially aligned with the tube and rod to engage opposed portions of an animal rib cage to effect a spreading of the rib cage subsequent to a hunting procedure. The sleeve may optionally include an annular array of blind bores to slidably receive an elongate peg member to enhance rotation of the sleeve relative to the rod.

Abstract: A lifting device (10) for facilitating installation and removal of a plurality of vehicle parts comprises a castered base (12) and a boom (14) pivotally mounted to the base (12) through a horizontal axis of rotation by a mast (46). A pneumatic jack (70) mounted to a between the base (12) and the boom (14) effects pivotal movement of the boom (14) between upper and lower positions. A receiver (16) is rotatably mounted on a horizontal axis of rotation to a rear portion (104) of the boom (14). A tie rod (122) pivotably mounted to and between the mast (46) and the receiver (16) guides the receiver (16) through rotational movement and maintains the same in a horizontal condition as the boom (14) moves between the upper and lower positions.

Abstract: An adjustable support device comprising a first elongated member having an upper end, a second elongated member having an upper end, a mechanism for connecting the first member to the second member such that the upper ends of the first and second members are vertically, adjustably movable in response to movement of the first elongated member with respect to the second elongated member, and a ratch connected between a first point located on the first member and a second point located on the second member for releasably securing the first and second points in spaced relationship and for selectively varying the spacing between the first and second points.

Abstract: A jack and adaptor combination for use in lifting the journaled end of a piston connecting rod of a large industrial engine. The jack has a main body within which a piston shaft is reciprocatingly received. The adaptor has a main body in the form of a plate member, and the plate member has opposed faces. One of the faces has a safety rod device extending therefrom and the opposed face has a plurality of upstanding rod engaging pins extending therefrom in opposition to the safety rod device. The marginal free end of the piston shaft and the safety rod device telescopingly engage one another in a removable and slidable manner while the upstanding pins have opposed ends, with one end being affixed to the plate member and the other end freely extending therefrom so that the pins are received within bolt holes of the rod end. The pins are opposed to the mount means. The plate member, the pins, and the mount member are arranged to be free of the crankshaft journal as the rod end is engaged and lifted.

Abstract: A universal transmission work station (10) designed for use by a single person to mount and service any model or type of automatic transmission (50). Thus, the invention solves the problem of needing more than one work station to service the various models/types of transmissions used today. The work station (10) requires a minimum work space, is easily stowed when not in use and is easily dismantled for storage or shipment. The work station consists of eight common assemblies and a ninth assembly especially designed to service frontwheel drive transmissions. The design basically consists of a base assembly (12) to which is attached a lower and upper pivoting assembly (14) (16). After the transmission (50) is mounted to the work station, by means of a tail housing support assembly (18) and a bell-housing mounting plate assembly (20), the pivoting assemblies (14) (16) can be tilted to allow the transmission (50) to be serviced in a horizontal position.

Abstract: A removable extension (48) for a hydraulic floor jack (10) mounted on the extending end of a lifting arm (26) upon removal of a saddle (28) therefrom and adapted to contact the underside of a vehicle body for raising the vehicle body. The extension (48) has a lower plate (56) with a lower pin (58) received within an opening (44) on the upper horizontal web (38) of a U-shaped mounting bracket (28) on the extending end of the lifting arm (26).

Abstract: A jack for opening locked or barricaded doors has a first hydraulic single acting piston and cylinder actuator mounted on a casing by which holding claws are forces into engagement with a door frame to hold the jack in place. An arm is pivotted on the casing and an end opposite the pivot forced against the door by a second hydraulic single acting piston and cylinder actuator to open the door, reaction to the opening force being transmitted to the door frame through the casing and claws. The reservoir for the hydraulic fluid is provided to the rear of the piston of the actuator. The jack is readily portable and self-contained, and does not present a significant obstacle to entry through a door which has been forced using the jack.

Abstract: A tool for assisting a person to attach the fabric top of a utility or military vehicle, such as a JEEP, to the back of the vehicle body. The tool is an adjustable length flexible belt with a loop at its lower end. A rigid hook mmber is attached to the upper end of the belt. The hook member fits over the usual rear cross rod over which the fabric top passes from front-to-back and down to the back of the vehicle body. The combined length of the hook and belt is slightly less than the vertical distance of the rear cross rod on the vehicle down to the ground or other support surface on which the vehicle rests. A person using the tool pushes his foot down on the loop at the lower end of the belt, causing the belt to pull the cross rod down far enough to make it easy to attach snap fastener elements on the lower back end of the fabric top to complementary snap fastener elements on the back of the vehicle body.

Abstract: A pantograph lifting ramp for motor vehicles includes a pair of wheel guides supported by at least two pairs of columns, which are pivoted at their lower ends to two base frames. The columns of at least one pair have their lower ends connected through a torsion bar consisting of connectable sections. The lifting ramp includes a safety valve to prevent uncontrolled descent in case of failure of the hydraulic fluid system, and another safety device to arrest lowering of the lifting ramp if a worker's foot is accidentally placed between the base frame and a column or wheel guide during lowering of the ramp.

Abstract: A floor covering installation tool for lifting partitions, furniture or the like. The tool includes a mechanism for raising and lowering a bracket. The bracket includes a member for securing the bracket to the raising and lowering mechanism. One or more lifters adapted for raising and lowering furniture, partitions or the like are coupled with the bracket. One or more elongated elements are coupled with the raising and lowering mechanism. The elongated elements may include a wedging mechanism to enable the moving of the elongated elements underneath furniture, partitions or the like.

Abstract: A hydraulic jack system used for lifting and lowering heavy loads such as machine tools comprises a lower cylindrical member, a solid ram member mounted within the cylindrical member and an outer sleeve member having affixed thereto a lifting slab and fitting over the lower cylindrical member. A hydraulic injection hose forces fluid into the lower cylindrical tube causing the ram member to rise and thus lift the outer sleeve member and the flange on which the load rests. The hydraulic injection hose has an adjustable valve which allows not only for injecting fluid at a rate to raise the ram member and thus the load as quickly as desired, but also allows fluid to flow back through the fluid injection hose at a desired rate such as to lower the load through the force of gravity as quickly as desired.

Abstract: A coupling device which can be readily attached to a vehicle lifting jack and connected with a wheel nut to loosen the latter in response to operation of the jack. The coupling device comprises an adapter housing which is adapted to be slidably received over a vehicle engaging end portion of the lifting jack, a bushing means having an opening therethrough, a pivot means for pivotally connecting said bushing to said adaptor housing, and wrench having a socket engaging end portion adapted to be fitted over a wheel nut and a handle portion which is slidably received in said opening in said bushing. Operation of the jack causes the vehicle engaging end portion thereof to be moved to cause the handle to be rotated to loosen the wheel nut.

Abstract: A stationary twin column hoist to be used for raising vehicles, in which each column is fitted with a height-adjustable carriage, this carriage having two carrier arms which can be adjusted for length and which can be spread apart relative to each other, these being used to support the vehicle. In order to simply work that is carried out on the body of such a vehicle the present invention proposes that the pairs of rotating arms be connected with the carriages by an adjusting system each of these adjusting systems being pivotable about a common horizontal axis. Addition holding devices are provided so as to ensure the additional security of the vehicle. Using the present invention it is possible to convert existing twin column hoists without any major expenditure.

Abstract: An improved stand comprises a substantially "H" shaped supporting frame which was pivoted with an also substantially "H" shaped shifting frame. There are rollers provided on the lower end of the shifting frame and properly exceeding the lower end of the supporting frame when the shifting frame is at positions close to the supporting frame, thus we can force the shifting frame to rotate toward the parked supporting frame to temporarily take over the support of the supporting frame, and adjust the position of the parked motorcycle or motor-bike easily within a narrow area.

Abstract: A vehicle wheel offset wheel bracket assembly includes a platform with a jack receiving surface, and wheel rim engaging arms, connected to and extending upwardly and outwardly from the platform toward a wheel to be raised, for engaging an under surface of an upper part of a rim of a wheel to be raised. The platform projects in a direction away from the wheel and a restraining chain, connected to the platform and to the lower part of the wheel keeps the platform from moving outwardly away from the wheel when a jack is raised against the platform.

Abstract: A jack for installing in a mine a plurality of elongate extensible panels adapted to extend vertically in side-by-side relation from the floor to the roof of a passageway in a mine. Each panel comprises a first elongate member consituting a lower member of the panel and a second elongate member constituting an upper member of the panel, each member having a web and flanges at opposite sides of the web, one of the members having a telescoping sliding fit in the other. The upper member of each panel has a head at its upper end and the lower member of each panel has a foot at its lower end.

Abstract: An apparatus and method for jacking basement walls which have cracked or partially moved inward due to pressure from outside the wall. Employing the apparatus of this invention, the jacking operation can be done easily and safely even in basements where there is little space along the wall in which to fit jacking equipment. The apparatus includes a brace attached at the bottom by a bracket adjacent the wall to be jacked. The brace is then set vertically against the wall. A telescoping beam is attached to the floor a short distance from the wall, so that the beam is positioned upright, parallel to the brace. The upper end of the beam is extended and attached to the floor joists overhead in the basement. A jack assembly is then slidably attached between the beam and the brace. The jack assembly may then be slid to the proper point to exert pressure on the brace, and in turn the wall, at the best possible spot.

Abstract: A portable clamping device is provided which is quickly and easily attachable to the axle of a vehicle. The clamping devices provides a base upon which a lifting device can be positioned for lifting a wheel to be installed or removed from a vehicle relative to the vehicle axle. The device comprises a longitudinally extending base that can be installed on an axle through the central hole in a wheel to be affixed to the axle. The base includes several sets of guides for guiding a cable slidably attached to the base during the clamping operation. One set of guides extends transversely from the base while a second set of guides defines a longitudinal path along the base. The cable is positioned by the guides such that an arcuate segment of the cable in contact with the first set of guides extends in a plane transverse to the base. A linear segment of the cable in contact with the second set of guides extends along a longitudinal path on the base.

Abstract: A lifting bracket kit for a vehicle wheel on a vehicle connects with a bumper jack or body jack supplied with the vehicle or other type of lifting device so the vehicle can be raised by the wheel for maintenance and other purposes. Avoids spring extension and allows vehicle to be placed on blocks.

Abstract: Jack for elongated cylindrical tanks, such as propane tanks, including a jack housing, a jack actuator tube coming out of the jack housing, and an elongated jack foot at a right angle to the jack actuator tube. The jack channel includes a tank support affixed to the jack channel and opposing chain plates at right angles to the tank support including keyhole slots for holding chain links. Two chains including hooks and chafe protectors secure to feet of a cylindrical tank, and each free end of the chain secures through the key hole slot. A jack handle actuates and extends the elongated jack foot downwardly thereby carrying and raising the tank resting on pads on the tank support, as well as the jack housing upwardly in an opposite direction to the actuation of the elongated jack foot.

Abstract: In combination with a bumper jack an apparatus for pushing a tree over when the tree is being cut down is provided so that when a base connected to the bumper jack is placed on a ground surface the apparatus is tipped at an angle between the ground surface and the tree a jack handle will operate a jack mechanism to rise along a jack post causing a support member to push a shaft through an aperture in a guide member until points on a tip member will contact the tree, pushing the tree over when the tree is being cut down.

Abstract: A jack adapter of the present invention includes a generally cylindrical solid rod having a recess formed in one end for indexing the end to a jack centering projection of a vehicle and an axially extending threaded aperture formed in an opposite end. The rod has a length selected to extend at least the distance between the jack support surface and the lower surface of an accessory running board mounted to the vehicle and a threaded fastener is employed for securing the rod to the accessory jack for the vehicle.

Abstract: A tool particularly useful for facilitating the removal of a torsion bar employed as a spring element, particularly in automobiles such as the familiar Volkswagon rear-engine models. The torsion bar exerts a normal torque holding a spline-connected cantilever bar against a stop integral with a fixed structural member. The tool engages the arm adjacent its cantilevered end and applies a force increasing the torsion bar reaction force sufficient to dislodge it from the stop so that the cantilever bar can be forced outwardly by separate means to disengage the torsion bar-to-cantilever arm spline connection by a sufficient amount to allow controlled de-torquing rotation of the arm without encountering the stop. The spline connection may be subsequently fully disengaged and the torsion bar removed from its internal structural anchor.

Abstract: A jack stand attachment for use with a conventional support stand is disclosed, the attachment having a socket means that is slidably received on the load rest of the support stand. On the upper surface of the socket means, there is found a V-shaped rest and link means are pivoted to the attachment which have apertures therein near the terminus thereof that will accept a wheel lug bolt.

Abstract: Apparatus and method for moving a hose hauler apparatus through an arc includes a pressure plate which is anchored in a manner to secure the pressure plate at a fixed location on the surface of the earth. An elevating apparatus is attached to the pressure plate. The elevating apparatus can be raised or lowered and has a platform on its upper surface. A linkage capture apparatus is attached to the platform. In use the device is inserted under a hose hauler, anchored and the linkage capturing apparatus is raised until the linkage is secured. Several of the devices are placed as required to initiate desired arcuate deviation in the hose hauler.

Abstract: A novel jackable prop or stand is provided herein. It includes a base including a transverse plate and a pair of widely-spaced-apart, forwardly-projecting feet. A pair of spaced apart, upstanding polygonal cross-section e.g. square, posts are secured to the jackable or stand prop, e.g. either to the transverse plate at the region of the forwardly projecting feet, or directly to an associated foot. A freely-vertically-movable lifting frame is slidably but not relatively rotatably mounted on the posts.

Abstract: For use in energized high voltage pole line maintenance work, a vertical mast carrying a temporary crossarm is adjustably attached to an adapter sleeve mounted in lieu of one of the buckets of a dual-bucket truck on the self-leveling cross shaft, so that the axis of the sleeve is always vertically disposed. The mast is slidingly received and movable lengthwise within the adapter sleeve. The lineman in the bucket first maneuvers the boom carrying the bucket and the temporary crossarm to a desired position usually adjacent to the pole, under the high voltage line conductor(s). He then, by power means, raises the mast carrying the temporary crossarm, thereby lifting the conductor(s) above the pole top. In so lifting the mast, each of the line conductors drops into a receiving bracket on the temporary crossarm and is automatically locked therein. A quick disconnect for releasing the crossarm from the mast is provided controlled by a lineman on the ground.

Abstract: A pair of relatively adjustable elongate struts adapted to be inserted between a part of a motorcycle chassis and a supporting wheel to block flexing of the motorcycle suspension system when the motorcycle is being hauled on a carrier over rough terrain or the like. A device is provided at the remote end of one of the struts to interlock with the tread of the wheel tire and another element is provided at the remote end of the other strut to interlock with the chassis part to prevent dislodging of the struts due to bouncing of the motorcycle while in transit. A locking ring is slidable into position to embrace both struts to lock the same in extended colinear relationship.

Abstract: A belt tensioning tool for tensioning an endless belt that passes around a plurality of spaced apart pulleys with one of the pulleys being mounted for adjustable movement relative to the other pulleys. The belt tensioning tool has as its basic components an actuator assembly including an extensible rod member, a reaction assembly mounted to one end of the actuator assembly, and a slidable assembly mounted to the extensible rod member. The reaction assembly includes a reaction arm member which extends in a cantilevered fashion away from the extensible rod end of the actuator assembly. Similarly, the slidable assembly includes a cantilevered, slidable arm member which is mounted to the extensible rod member and is slidably movable along a track in the reaction arm member. The reaction arm member and slidable arm member include opposed adapter members having pulley engaging ends that extend in opposite directions.

Abstract: An operable vehicle jack for use between aligned peripheries of a pair of vehicle tandem wheels, and having a bell-like housing member associated with a raisable jack portion, whereby upon jack operational raising said housing becomes wedgedly held against and between said aligned tandem wheel peripheries.

Abstract: A device and method utilizing a standard automotive vehicle bumper jack, including a lower and upper jack adaptor and padlock. The lower jack adaptor engages both the bottom of the bumper jack and the brake pedal of the automotive vehicle. The upper jack adaptor engages both the top of the bumper jack and the steering wheel of the automotive vehicle. Once the jack and the adaptors are correctly positioned between the vehicle's brake pedal and the steering wheel, the bumper jack is activated to produce a downward positive pressure on the automotive vehicle's brake pedal, thus locking all four (4) wheels thereof. A padlock is inserted into one of the bumper jack apperatures and locked to prohibit the disengagement of the bumper jack.An alternative embodiment consists of a unitary device and method utilizing a cylindrical shaft body having a screwing mechanism and a shaft lock.

Abstract: A jack for lifting unbalanced loads such as automobiles, comprises a base having a raised portion thereon with a recess therein to accommodate the base of a jack column. The recess for the jack column is offset on the base and oriented to place a major portion on the base beneath the jack saddle during operation in order to increase stability. A substantially circular collar is mounted about the jack column at a predetermined distance from the base, said collar being supported by a plurality of spaced flexible legs pivotally mounted to the base at one end and curving upwardly to a removable mounting at the collar to prevent column tilt. The jack also includes a saddle assembly having a movable saddle with a protruding portion to engage an aperture in the load which is oriented to approximate the direction of lift point shift.

Abstract: A draft gear removal apparatus comprising a hydraulically actuated scissors type draft gear lifting apparatus having a plurality of wheels mounted outboard on the base thereof having portions thereof extending above the base and two of the wheels being steerable and having a hydraulically actuated draft gear compression device removably mounted on the table of the lifting apparatus having a movable plurality of hydraulically actuated cylinders thereon to selectively bear against the center sill of a railcar to assist in the removal of a compressed draft gear from the center sill.

Abstract: Apparatus is provided which couples to one jaw of a pair of jaws of an expandable jaw power tool to remotely apply and distribute expansion power of the pair of power jaws when the jaws are actuated. A sleeve or collar is fitted over one of the jaws of the pair of power jaws, the sleeve adapted to receive and support one end of a threaded shaft, the other end of which supports a power or pressure distributing member. The threaded shaft screw-couples into a tapped hole in the sleeve and impinges upon one side of the jaw over which the sleeve is fitted, locking the sleeve on to the jaw. Thrust or expansion power, normally applied between the two jaws upon expansion, is applied between one jaw and the remote power or pressure distributing member coupled to the locked sleeve.

Abstract: An extension for a common trolley type service jack that includes an elongate rigid frame with a tunnel extending inwardly from one end thereof to receive the jacking end portion of the trolley type service jack. The rigid frame bears downwardly on the frame of the service jack adjacent the entry to the tunnel and inwardly thereof are supports for the wheels of the trolley jack. A lift platform is attached to the rigid frame by a lever pivotally attached at one end to the lift platform and at the other end to the rigid frame and overly the tunnel. The lever extends beyond the tunnel and on the free outer end is mounted the lift platform, the lever being pivotally movable by the lift portion of the jack to raise the lift platform of the jack extension.

Abstract: A log lifting device is described that includes an upstanding post with an attached flexible strand. The flexible strand, such as a chain, releasably connects the post to a jack. Guide members on the post cause the flexible strand to extend generally parallel to the post for a substantial portion of the length of the post. The flexible strand may include a thin, rigid extension at one end to enable the strand to be threaded under a log to be lifted. The end passed under the log to be lifted is then attached to a jack. The log is raised upwardly generally parallel the length of the support member in response to an upward force applied by the jack.

Abstract: A battery-powered electric motor driven cart for pushing disabled vehicles and having a frame designed to support a portion of the vehicle's weight for enhancing the traction of the cart's drive wheels with the ground. The cart can be operated remotely to permit steered movement of the vehicle by a single person.

Abstract: A vehicle lifting jack having a jack shaft, a load lifting assembly supported on and operably associated therewith for vertical movement therealong, and an improved load engaging member pivotably affixed to the load lifting assembly. The load engaging member includes a stabilizing torque arm having a roller at the extending end thereof for bearing engagement of the shaft to isolate torque created during operation to the load engaging member and direct such torque to the shaft, thereby preventing rotation of the load lifting assembly with respect to the shaft. To prevent damage to the vehicle bumper during operation, the load engaging member also includes a cantilevered portion, a vehicle frame engaging element extending upwardly therefrom for liftingly engaging the vehicle frame, and a bumper engaging element for cushioned abutting contact with the vehicle bumper during operation.

Abstract: A portable hydraulically operated rescue tool has a pair of force arms supported for pivotal movement adjacent inner ends and an hydraulic piston-cylinder assembly for pivoting the arms to move the outer end portions of the arms generally toward and away from each other between adjacent and spread apart positions. Spreader plate assemblies are releasably connected to the outer ends of the force arms. Each plate assembly includes a spreader plate connected to an associated force arm to pivot about an axis which extends transversely of the longitudinal axis of the arm and which is spaced longitudinally inwardly from the outer end of the arm. Each plate may be further supported to swivel about a central axis normal to its pivotal axis. One of the plates may have an arcuately concave contour for gripping engagement with a cylindrical member, such as the steering column of a motor vehicle.

Abstract: Equipment is provided for ground handling of skid equipped helicopters utilizing existing wheel attachment fittings on the skids; the equipment comprising adapters for attaching an adjustable load carrying member to the existing wheel attachment fittings whereby the load carrying member can be engaged by the lifting element of a mobile lifting dolly for lifting and transporting the helicopter.

Abstract: A bumper jack for vehicles is provided having improved stability. This bumper jack includes the usual ratchet bar and load lifting housing mounted on the bar for movement therealong. According to the novel feature, the load lifting housing comprises steel side walls surrounding the ratchet bar, with these side walls at one side of the ratchet bar forming a lower inclined bumper engageable ledge and an upper inclined bumper engageable ledge. At the lower edge of each ledge is an upwardly projecting finger member, with each finger having an upwardly and outwardly sloping edge adjacent a ledge, forming a trough between the finger and the ledge. These fingers are adapted to extend through a pair of vertically aligned slots in a bumper, thereby providing both lateral stability and fore and aft stability when lifting a vehicle.

Abstract: Disclosed herein is an apparatus for inexpensively removing pieces of concrete and similar types of material from an installed location by means of an inverted F-shaped concrete remover. This remover has an additional leg parallel to the two horizontal legs that form the F but it is disposed at the extremity remote from the other horizontal legs in an opposite sense. A hydraulic jack is associated with this machine to provide pressure on the last named leg and remove portions of concrete.

Abstract: A novel attachment for a motor vehicle transmission jack of the type having a lift arm adapted to raise and lower motor vehicle transmission parts at its forward end. The attachment is adapted to support a fully assembled 4-wheel drive transmission unit, including the transfer case and the motor vehicle transmission support bracket, independently of a motor vehicle. The attachment includes a base member adapted to be connected to the forward portion of the lift arm and having a support portion adapted to supportably engage the motor vehicle transmission support bracket substantially vertical of the forward end of said lift arm. The attachment also includes a forward support member rigidly secured to the base member, having a support portion adapted to supportably engage the forward portion of the transmission. The support portions of the base member and the forward support member are spaced relative to each other to support the motor vehicle transmission unit in a substantially horizontal position.

Abstract: The present invention relates to a tree felling device adapted to engage a tree being cut down and to exert a force thereagainst in a particular direction in order to assure that the tree will fall in a selected area. The tree felling device of the present invention includes a jacking device of the basic bumper jack type which is adapted to support an elongated pusher having a tree engaging head secured at one end thereof and which is preferably tied to the tree to be cut. As a part of the jacking device, there is provided a ratchet mechanism having an anchoring stud secured thereto for generally receiving and stabilizing one end of said pusher while the jacking assembly is provided with a support clip about the top portion thereof for holding the pusher.

Abstract: The unit comprises outer and inner coaxial cylinders defining an hydraulic fluid reservoir between the inner walls of the outer cylinder and the outer walls of the inner cylinder. The opposite ends of the cylinders are closed off by a lower closure means and an upper cylinder head. A single piston within the inner cylinder has first and second piston rods extending from opposite sides through the cylinder head and lower closure. The cylinder head includes an hydraulic pump with passages placing the reservoir into communication with the interior of the inner cylinder above the piston together with appropriate check valves so that operation of the hydraulic pump will move the piston down the inner cylinder to exert a pulling force on the first piston rod and a pushing force on the second piston rod.

Abstract: A leverage device for use with various jacking means may be folded to occupy a minimum of space during storage but can be unfolded and set in an operative condition to be made fully functional to cooperate with various conventional jacking devices, the device providing a scissoring action for raising and lowering an object when the jack is actuated.