Abstract: A lift assembly for use in a repair shop or the like. The assembly includes at least one mast extending generally vertically, and a relatively movable component including a lift frame assembly. The lift frame assembly includes at least one longitudinal member and at least one work-engaging member. A vertically movable lifting assembly is also provided, which includes a movable element. The lift frame is movably secured to the mast by at least one guide assembly which moves substantially vertically along the track of said mast. The mast includes a portion with a slight curve or straight section inclined in the direction away from said fork leg while the curved or other mast allows free but confined movement of said guide assembly as said lift frame travels vertically throughout a range of vertical positions.

Abstract: A converter allows a user to convert a conventional car jack from a non-specialized, general service variety into a specialty transmission jack. The car jack has a low, wheeled frame; a handle; a boom extending between a base end pivoted to the frame near the handle and an opposite end formed with a seat portion; and a hydraulic cylinder stretching between the frame and the boom which is actuated by pumping the jack handle to raise the boom. The seat portion of the boom is formed with a socket. The car jack conventionally is provided with a conventional cup having a stem which allows removable seating in the socket of the jack's boom. The converter head has a base plate defining a plane; a stem beneath the base plate for removable seating in the socket of the jack's boom; four or so arms extending between a butt end and a tip end; and cap screws threaded through the tip end of each arm. The cap screws allow adjustment in length and provide upper contact ends for propping a vehicle transmission thereon.

Abstract: A hydraulic jack is disclosed. The hydraulic jack has a bearing (16) provided under the hydraulic cylinder (30), such that the handle (40) is able to steer the hydraulic jack to any direction as required. A quick-release handle (50) connected with a control plate (43) communicating with the hydraulic cylinder (30) is provided beside the handle (40) so as to facilitate the release of the pressure built up in the hydraulic cylinder (30).

Abstract: A jack for raising automotive equipment, particularly heavy equipment such as truck tractors and trailers. The jack includes a heavy duty ram on an extended base. The base is mobile, but includes at least one vertically movable wheel. The movable wheel is engaged to retract into the base to provide a stable, non-moving platform. The top of the ram is provided with a readily removable extended platform which is shaped to be extendible between the frame of the automotive equipment and any springs, particularly leaf springs on the equipment. Convenient safety arrangements to prevent the jack from dropping are provided to provide positive mechanical engagement between the jack and its base.

Abstract: The invention is an improved jack having a safety device for preventing the jack from collapsing under a heavy load. The improved jack includes a linkage movable from a lowered position to an elevated position for engaging and elevating a load, an actuating mechanism connected to the linkage for moving the linkage toward the elevated position upon actuation of the actuating means, and the safety device blocking mechanism for blocking movement of the linkage from the elevated position to the lowered position. The linkage is supported and disposed for pivotal movement between two side plates. The blocking mechanism provides an abutment across the two side plates to limit the movement of linkage. The blocking mechanism features a block fixed to the linkage. The block has horizontal bores passing therethrough. A lock rod is inserted through the horizontal bores to provide an abutment across the two side plates when the linkage is elevated, thereby preventing the linkage from unintentionally lowering.

Abstract: The invention relates to a lift, comprising:a stand, comprising a substantially upright and hollow profile with an opening along at least one longitudinal side thereof and a safety device;a carriage arranged in said profile with a support extending through said opening in said longitudinal side and a row of protrusions co-acting with said safety device, said carriage having smaller dimensions than said opening;a drive connected to said carriage and said stand to respectively raise and lower said carriage through said stand; anda plurality of first guides connected to said lower part of said carriage, maintaining said carriage inside said stand, where said safety device is arranged near the top side of said carriage in a lowered position and at least one second guide is connected to said carriage in a lowered position near the top side thereof in stiffening contact with said profile.

Abstract: The present invention relates to a longitudinal portable aligner for damaged vehicle bodywork and vehicle chassis, in conjunction with which the aligner consists of a lower part (1) executed as a frame and an upper part (2), a so-called slide, mounted in it in such a way as to be capable of displacement. The aligner is equipped with folding wheels 919) capable of adjustment between a working position, in which the frame of the aligner is in contact with the floor, and a transport position, in which the frame of the aligner adopts a free position relative to the floor. The invention is characterized in that the wheels (19) are rotatably arranged on a wheel carrier (17) which is arranged as to engage around the lower part (1) and be pivotally mounted on the outsides of the lower part, so that the wheels (19) can be caused to oscillate about the fulcra of the wheel carrier (17) via the force exerted on the web of the wheel carrier.

Abstract: A transportable lift includes a base and an elevator connected to the base which is arranged to support and vertically lift a load relative to the base. Transport wheels are connected to the base and are vertically moveable relative to the base. A control mechanism is connected to a frame for the transport wheels to selectively disable transport when a load is on the elevator. The control mechanism includes a drive connected to the frame for the transport wheels which, in use, exerts a first transport enabling force on the frame. A counter drive is connected to the base and the drive which, in use, exerts a second force to compensate the first force and a weight of exclusively the lift.

Abstract: A mobile vehicle jack and support is disclosed that may be positioned below a vehicle, raise the vehicle to a selected height, and securely support the vehicle at the selected height. The mobile jack and support includes a frame, a lift arm rotatably coupled to the frame at one end and having a vehicle engagement at an opposite end, and an support member rotatably coupled to the frame.

Abstract: A lifting jack for raising boats and other objects. It has an inner housing or tube which is supported from a flat base. An outer tube is slidably mounted over the inner tube. A hydraulic jack inside the inner tube raises and lowers the outer tube. Two parallel series of vertical catches are supported on the outside of the outer tube. A selected pair of these catches support a connecting rod which holds a pair of flat support arms in a fixed relationship. The arms support a lifting pad in a plurality of elevations for each pair of vertical catches. A safety latch permits the outer housing to be raised but must be manually released for lowering.

Abstract: An apparatus for lifting and supporting a vehicle relative to the ground includes a base assembly and a relatively shiftable carriage assembly. The base assembly includes a base resting on the ground and an upstanding post, and the cradle assembly is supported on the post for up and down movement. A piston and cylinder assembly is connected between the base assembly and the cradle assembly for moving the cradle up and down, and a pawl and ratchet assembly permits unrestricted upward movement of the cradle assembly while preventing unrestricted downward movement. A locking assembly is provided for locking the cradle assembly in a raised position relative to the base assembly.

Abstract: A lifting device for lifting heavier loads is disclosed including a square base plate having a plurality of wheels attached in triangular arrangement which provide a low center of gravity for the lifting device. Mounted in the center of the square base plate is a cylindrical housing having a sealed tube within an unsealed tube, a space between the tubes, a fluid holding chamber, a fluid filed chamber, a fluid filled space, a plurality of hydraulic seals, an orifice between the fluid filled space and the fluid holding chamber, a plurality of orifices in the bottom aspect of the fluid holding chamber and a plurality of external connections, an orifice in the top aspect of the fluid holding chamber between the fluid holding chamber and the operating chamber, a tube in the fluid holding chamber for transferring pressurized hydraulic fluid to the operating chamber, and a piston assembly having an operating chamber which is slidable longitudinally in the cylindrical housing.

Abstract: A hydraulic jack movably supported by a plural casters has a vertically extending hydraulic cylinder with telescoping piston rods, has a load supporting frame at an upper end of the innermost piston rod, and has a reservoir partially filled with hydraulic fluid. A single foot pedal is pivotally supported on the jack, and is movable between first and second positions through a center position. A hydraulic valve arrangement is responsive to movement of the actuating member toward its first position for permitting fluid flow from the reservoir to the hydraulic cylinder and is responsive to movement of the actuating member toward its second position for permitting fluid flow from the hydraulic cylinder to the reservoir. A kicker lever supported for pivotal movement about the same axis as the actuating member is operatively coupled to the actuating member for movement therewith by two springs, and can actuate an air valve.

Abstract: A vehicle lifting system includes two pneumatic jacks each equipped with a detachable adapter for engaging a vehicle tire to lift the vehicle by its tires. The adapter has a fork with two arms that support the tire at two points on its circumference, on opposite sides of the tire's axis of rotation. The system also includes an air source connected to the jacks by a T-joint and separate air lines so that the jacks lift in unison. In another embodiment, the adapter is a receptacle for holding an end of a rigid lifter bar. Each jack is positioned on an opposite side of the vehicle with the lifter bar under the vehicle frame and extending between the jacks. The bar is equipped with body clamps to prevent the vehicle body from slipping during lifting.

Abstract: A wheel handling apparatus has an upright frame movably supporting a carrier connected to a wheel holder and a power unit for operating the wheel holder. A winch mounted on the carrier is used to move the carrier along the frame. The wheel holder has a body rotatably mounted on the carrier and a cone head connected to the power unit. The body supports arms that are moved into engagement with a wheel when the head is moved by the power unit into the body.

Abstract: A tractor splitter stand having a frame which articulates in order to provide for vertical adjustment of holes in an upright support with respect to tractor engagement holes is shown and described. Vertical adjustment is provided by a screw which controls the frame articulation, and by adjustment of side support members with respect to vertical extensions of the articulating frame.

Abstract: An elongated main beam is provided with support wheels at its opposite ends and a parallelogram-type lift arm assembly is pivotally mounted from a first end of the main beam for swinging movement between a lowered substantially horizontal position closely overlying the central portion of the main beam and an inclined position in which a lifting head carried by the upper end of the lift arm assembly may be used to support one side of a vehicle in an elevated position. A slide or follower is mounted on the second end of the main beam and a fluid motor is operatively connected between the main beam and the slide for forcibly shifting the latter along the main beam toward the first end thereof. Force arm structure is pivotally connected between the follower and a midlength portion of the lift arm assembly and is operative to raise the lift arm assembly to a vehicle elevating position responsive to actuation of the fluid motor to force the follower along the main beam toward the first end thereof.

Abstract: A universal adaptor is attached to the top end of a hydraulic ram of a vertical hoist for accomodating the lifting of motor vehicles for servicing. The adaptor has retractable traction pads at either end of an elongated support platform which engage the lower shock absorber tower mounts on opposing sides of the underside of the vehicle. The adaptor also includes axle lift cradles which may be engaged to support a vehicle by its rear axle or may be disengaged when their use is not feasible, such as lifting vehicles having independent rear wheel suspension systems. The retractable pads are retained in discrete positions by a latching mechanism, being adjustable to accommodate a variety of vehicular undersides of differing lateral dimensions.

Abstract: The disclosure describes an air jack with features that permit a substantial increase in performance during operation. A load engaging bracket includes a telescoping connection with rollers so that the connection will extend readily under loaded conditions without the air jack being subjected to forces that would tend to tilt it or otherwise move it. The ground-engaging member has sides that are positioned apart to define a dimension greater than the fully retracted load-engaging bracket to permit the bracket to lower between the sides thereby defining a minimum down height. An air manifold is positioned to furnish air under pressure not only for operating the air jack but for operating a number of air tools that are associated with the need for the air jack. The air jack has pockets to hold these tools when they are not being operated.

Abstract: A barbell exercise rack that includes a support base with a support stand upstanding therefrom to which are secured a pair of cantilever support arms. Each arm has a rack which holds the barbell while allowing the barbell to be lifted therefrom. The cantilever arms are mounted so that the outer ends are adjustable to be selectively converged and diverged in order to adjust the racks to various weight lifters. Preferably the height of the cantilever arms is also adjustable while the stand may include either one or two upright support elements.

Abstract: A four post lift provides first and second pairs of vertical supports. A pair of beams or rails extend between the supports and are simultaneously raised and lowered for elevating an automobile supported on a pair of tracks spanning the beams or rails. The tracks are movable toward and away from each other to accommodate vehicles of different width. There are provided devices for moving one of the rails relative to the other. The moving devices comprises a rack on each of the rails, a pair of pinions carried by the rails in engagement with the racks, devices interconnecting the pinions for simultaneous movement and devices for rotating the pinions.

Abstract: A vehicle hoist has an inclined column along which a carriage having normally horizontal support members is moved. The carriage is moved by a hydraulic cylinder and engages the column in a ratchet-like fashion allowing upwards movement but preventing the lowering of the carriage unless a release mechanism is actuated simultaneously with the hydraulic valve governing the cylinder. The invention improves safety and provides smooth surfaces about the column.

Abstract: Relatively tall jacks which include a small base plate and an elongated vertical post are unstable under many operating conditions due to the height of the stem and the relatively small base provided. The present device is a stand adapted to receive such jacks and to provide a relatively safe support thereto. The jack stand includes a rectangular base with stabilizing pans extending outwardly therefrom and a pair of wheels which engage the ground when the jack stand is tipped so that it can be maneuvered into position. A pair of vertical supports extend upwardly from the stand surmounted by an apertured brace through which the jack stand extends and is retained. The base of the jack is detachably secured to the base of the stand. A handle is provided at the upper ends of the support for maneuvering the jack and stand upon the two wheels and a bale detachably supports the actuating handle of the jack against the stem when not in use.

Abstract: A lift-pad assembly of adjustable height for use on a swing arm of a vehicle lift comprises a platform for contacting and at least partially supporting an undersurface of the vehicle, the platform being vertically adjustable in position while remaining horizontal by mounting it on the arm by means of pivotable support linkages the pivot axes of which are at the vertices of a parallelogram. Vertical positions for the platform other than fully up or fully down are provided by bars which can be interposed at will between the platform and a lower base support by operation of one or more slideable plates.

Abstract: A hydraulically operated lifting device, such as a portable swinging-arm floor jack a low-rise forklift, or a high-rise forklift is provided with a piston-and-cylinder actuator having a closure member at one end of the cylinder through which a bore extends which supports a piston of the desired length and which is of uniform diameter throughout. The closure member has a radial bypass opening to a central point of the bore which communicates with a reservoir surrounding the cylinder and the inner end of the piston is provided with a passage which communicates with the bypass opening at the outer travel limit of the piston to recirculate fluid to the reservoir to prevent further pressure build-up. The bore includes fluid seals on each side of the bypass opening to prevent fluid leakage.

Abstract: A wheeled jack construction particularly adapted for use in heavy-duty applications is provided. The jack includes a hydraulically operable piston and cylinder unit, a hydraulic fluid pump and a motive means for driving such pump. The unit is self-contained and one embodiment requires no external power source or hose connections. The provided unit may be readily wheeled by hand into place, actuated and removed from a site of use with a minimum of effort. The provided unit is flexible in operation enabling a plurality of motive means to be employed therewith.

Abstract: An hydraulic floor jack of the type which rolls on the floor to engage under a vehicle to lift it. This jack is characterized by an articulated frame to operatively and selectively use less floor space, flexible tire wheels to allow the load on the jack to be transmitted directly to the floor by the base of the jack upon flexing of the flexible tires under the load until the best rests on the floor, and by a narrow construction and arrangement of the operative parts to allow engagement in narrow spaces and in particular between the tandem wheels of a truck.

Abstract: A one end lift or like jack is provided with a snubber which prevents a lift saddle from rising in an uncontrolled manner. The snubber comprises a bi-ended cylinder closed at both ends which is affixed to the lift cylinder for corresponding vertical motion. A piston rod is affixed to a relatively stationary lift frame, and a piston is mounted to the rod within the snubber cylinder to define two cylinder chambers. Within the piston is an axial bleed port bore permitting fluid to bleed between the chambers. A check ring can be moved by fluid pressure imbalance along the snubber piston rod into a closed position against the bleed port, inhibiting fluid flow and prohibiting uncontrolled rise of the snubber and main cylinders. When the check ring is not in its closed position, relatively free lift lowering action is permitted.

Abstract: A vehicle support stand structure having separate stands for the forward and rear portions of a vehicle. The stand normally used under the forward portion of the vehicle has a frame with a transverse portion having an elongated portion extending therefrom. A pair of vertically extendable upright members mount on the upper transverse portion and they in use mount on an underneath portion of a vehicle engine or the like. The other stand is usable under the rear portion of a vehicle or alternately under the forward portion of a vehicle. It has a frame with an elongated portion having a transverse portion on one end thereof and having a movable frame portion movably mounted on the elongated portion. A rear support member is vertically movably mounted on the movable frame portion. A pair of telescopic upright members are mounted on the transverse frame portion adjacent to the elongated portion.