Abstract: The present invention is directed to an anchorage extractor. The extractor is used to remove post, anchorage or stake from the ground without using a force generated by a motor. The anchorage extractor comprises a base disposed on the ground to provide a stable support. A lever is connected to a driving wheel that is connected to a rack. The anchorage is attached to the rack and when the lever is actuated, the drive wheel drives the rack upward, removing the anchorage from the ground. An advantage of the present invention is that the direction of the extraction force is parallel to the anchorage axis by adjusting the angle of the extractor. The extractor may be folded on itself or dismantled to be transported.

Abstract: The invention relates to a scissors-like lifting device having a pair of scissors that are arranged between a carrier or support unit and a base unit. Each pair of scissors is provided with two arms which can be pivoted about corresponding axles. The scissors-like lifting device is provided with a lifting truck that can be moved by means of a drive in order to open and close the scissors. The inventive configuration efficiently controls the lifting movement. The band-like traction mechanism can be wound-up on the drum by means of the drive in order to pull the lifting truck towards the scissors axle so that the scissors are opened. The band-like traction device can be unwound from the drum so that the truck is moved away from the scissors axle by the force of gravity on the support and arms thereby closing the scissors.

Abstract: A locking device installed in a cargo support to lock a retractable tube, including a holder frame fastened to the outer tube of the retractable tube, a rack moved in a longitudinal sliding way defined between two parallel lugs of the holder frame, a driving lever pivoted to the holder frame for moving the rack, and a locking block pivoted to the holder frame and retained by a spring to lock the driving lever, wherein a L-shaped locating plate is mounted in the holder frame for the positioning of the outer tube of the retractable tube, having a round hole on a transverse section thereof through which the inner tube is inserted into the outer tube, two stop flanges bilaterally extended from a longitudinal section thereof and respectively engaged with respective end notches on the holder frame, and a lug extended from one stop flange and fastened to a lug at the holder frame; the holder frame and the locking block are respectively made of iron.

Abstract: The invention provides jack accessories for expanding the ability of a jack. One embodiment is a jack accessory assembly having a lift column, a lift-column socket adapted to fit the lift-column, and a tongue adapted to fit in the lift-column socket. In another embodiment, the invention is a lift-column socket built as a rectangular tube having a first side adapted to receive support from a catching means, and a first flange-catch coupled to the front, the first flange-catch for supporting a flange of a tongue.

Abstract: A mechanical lifting jack with a locking mechanism that arrests upward motion of the handle if the handle is suddenly released by the operator while raising or lowering a load. A latch on the pivot attachment of the handle to the lifting assembly is actuated by a lever disposed at the distal end of the handle, and engages into a toothed safety link when the lever is released. In the event that the operator suddenly releases the handle accidentally, the latch engages the safety link to arrest the upward motion of the handle. The invention can also be used to lock the handle into an upright position alongside the vertical support for compact storage.

Abstract: A foldable jack system for lifting a car during the changing of a tire comprising a lower support bar formed of separable halves, each half having an intermediate end with hinge attachments formed of spaced holes mutually alignable to receive a bolt for coupling the halves, each half having a support block at its exterior end with a vertical recess at its upper end and a support plate at its lower end; an upper support bar formed of separable halves, each half having an interior end with a hinge attachment formed of spaced holes mutually alignable to receive a bolt for coupling the halves, each half having a jack block at its exterior end with a vertical aperture extending therethrough; a hook extension secured to each half of the upper support bar; a pair of rigid bars, each rigid bar having a lower end received in the recess of its associated support block and a series of teeth facing in a common direction; activating mechanisms including a jack crank for each jack block for raising and lowering the jack bl

Abstract: An improved portable apparatus for moving and precisely placing a large and heavy object includes load support rails, aligned pairs of anchoring structures secured to and spaced longitudinally from one another along the rails, an actuator-supporting shoe movable along the support rails having lugs for releasably engaging one pair of the anchoring structures to hold the shoe in a stationary position, and an actuator extending between and connecting the shoe with the load movably supported on the rails. The improvements relate to the configuration of the shoe and to a pair of reinforced spaced anchoring pins which allow engagement with one or the other pin by the lugs on the shoe by merely reversing, or rotating 180.degree., the position of the shoe on the rails. In one position of the shoe with its lugs engaged with one of the pins, retraction of the actuator will produce movement of the load in one direction.

Abstract: Apparatus and method for jacking and dollying a vehicle wheel assembly, while the assembly remains affixed to the vehicle, the wheel assembly including a pneumatic tire, a wheel and an axle. The apparatus features a "U" shaped framework having telescoping body section members to which orthogonally extending arms are attached. Wheel assembly engaging elements in the form of roller assemblies are mounted on the framework arms for engaging the tire of a wheel assembly located therebetween for lifting. The apparatus also includes an actuator mounted on the framework body section members for driving the roller assemblies against the wheel assembly tire to cause lift, and form the framework and roller assemblies into a carriage for retaining the wheel assembly. Still further, the framework is mounted on casters to enable transport of the supported wheel assembly and framework.

Abstract: For the handling of portable large containers, lifting and depositing devices are used, which have rack and pinion jacks to be attached to the corners of the containers by brackets. There rack and pinion jacks have tubular winch shanks which are approximately the height of the containers, into which are guided tubular uprights with the racks. Because of tolerance variations, the danger here arises of an impaired guidance of the uprights with the result of a poor operation of the gearing. To avoid this difficulty, a guide tube is connected with the bottom end of each tubular winch shank. Guide surfaces in the guide tube can be produced with great precision and at low cost. The housing of the winch gearing is configured integral with the guide tube. Thus, a small amount of side play can be left between the upright and winch shank without adversely affecting the rack and pinion gearing operation.

Abstract: A mechanical lifting jack has an upper lifting assembly and a lower follower assembly slidably mounted on a vertical support and engageable therewith at predetermined positions over its height. An operating handle is pivotally connected at one end to the lifting assembly for upward and downward angular movement, and a safety link is pivotally connected at an upper end to the handle and at a lower end to the follower assembly. The lifting assembly carries a reversing member operable in one position to cause a load engaged by the lifting assembly to be raised by alternate upward movement of the lifting assembly and follower assembly up the support when the handle is moved upwardly and downwardly, and operable in another position to cause a load to be lowered by alternate downward movement of the lifting assembly and follower assembly with similar movement of the handle.

Abstract: A lifting jack for lifting loads and exerting a pulling force between two locations includes an I-beam standard having a series of uniformly shaped and evenly spaced apertures, an upper runner disposed about the standard and carrying a first climbing pin which is adapted to fit within a corresponding one of the various apertures, a lower runner disposed about the standard and carrying a second climbing pin also adapted to fit within a corresponding one of the various apertures. The upper and lower runners are connected together by a pitman and these three components are further assembled to a lever which is pivotally attached so as to provide a jacking action to the upper and lower runners. The lever has a pair of fulcrum points only one of which is used with any one jacking cycle, depending upon which runner is advancing and which climbing pin is to be inserted into a corresponding aperture.

Abstract: Apparatus for moving a tube bundle out of or into a heat exchanger shell consists of an elongated frame structure including a pair of parallel spaced beams, a mobile carriage to support the tube bundle and mounted on the parallel beams for movement along them, clamps to connect and lock the elongated frame structure to the shell of the heat exchanger, a mobile sub-frame carrying a hydraulically-operated force-exerting mechanism to be connected to the tube bundle to move it out of the shell, and laterally positioned stops along the length of the frame structure to provide opposing thrust surfaces to the thrust exerted by the force-exerting mechanism so as to effect movement of the tube bundle along the frame structure.

Abstract: Novel ratchet loadbinder apparatus utilizing a spring-biased single pawl member carried within a slotted cam formed on the loadbinder's handle, the pawl member being selectively and reversibly positioned in one of two operating positions formed by bearing recesses at both ends of the slotted cam, such selective placement depending upon the desired direction of movement of an associated screw-threaded turnbuckle barrel. The loadbinder's handle carries a spring member utilized to maintain the pawl member in its preselected position during indexing handle movements. During working stroke handle movements, the pawl member is forcibly interposed between the selected bearing recess on the handle and an associated ratchet gear rigidly mounted on the threaded barrel.