Abstract: A support member for semi-trailers or the like comprising two driven spindle-jacks each with two telescoping inner and outer tubing and each with one bevel-gear drive, one of these drives being actuated by spur-gearing itself actuated by a handcrank, the bevel-gear shaft of this bevel-gear drive penetrating the spur-gearing and forming part of same and being supported at the opposite end as well as between its ends in the outer tubing.

Abstract: A gear rack hoist for lifting, lowering and/or holding containers or the like having upper and lower corner fittings that are adapted to be engaged by conical parts of two beams mounted in spaced relation on a hoist shaft. The beam associated with the lower fitting is provided with two bars of different lengths, the bars being pivotally connected to the hoist shaft and to a conical part. Preferably, the total length of the two bars is less than or does not exceed significantly the height of the hoist shaft. The longer bar is connected to the hoist shaft by an outwardly closed, generally U-shaped suspension and securing bail surrounding the bar with play and extending generally transversely to the hoist shaft. The ball is provided with a guide and support for a support bolt secured to the upper end of the longer bar.

Abstract: Lifting and depositing equipment for cabins, shelters or the like that are movable on the loading surfaces of trucks or similar vehicles, comprising a plurality of jacks detachably fastened by trusses to the side walls of the cabin. A detachable, laterally displaceable roller system and a guidance system are mounted on the trusses for at least two of the jacks that are mutually oppositely disposed in the transverse direction, whereby upon a truck moving beneath the cabin, the roller systems glide off the upper rims of the upright side walls of the truck and support the cabin so as to maintain a space between it, the truck loading surface and the side walls. The guide systems cooperate jointly with the side walls to ensure simultaneously a lateral aligning of the cabin with respect to the loading surface and side walls to effect a central positioning of the cabin on the loading surface of the truck.

Abstract: A rack jack for hoisting, lowering and/or supporting containers, cabins, shelters, exchangeable superstructures or the like, with the corner fitting whereof pinlike engaging parts of two arms cooperate, the arms presenting respectively two supporting rods of different length, disposed at a distance from each other on the jack shaft and associated with the upper or lower corner fittings. The engaging part for the upper corner fitting is adjustable axially parallel to the axis of the jack and transversely to the jack axis, and the engaging part for the lower corner fitting is disposed perpendicularly with reference to the jack axis. The two rods of the arm that is associated with the lower corner fittings are articulatedly connected respectively with the jack shaft and the pinlike engaging part.