Implements or apparatus for applying pushing or pulling force – Vehicle-body lifters
Patent
1976-09-07
1977-08-30
Smith, Al Lawrence
Implements or apparatus for applying pushing or pulling force
Vehicle-body lifters
214515, B66F 726
Patent
active
040450007
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. The longer rod that in the working position runs obliquely against the jack shaft is provided with a plurality of mutually spaced articulation points in the upper half of the jack shaft, and the total length of the two rods of the arm does not exceed, or does not substantially exceed, the height of the jack shaft.
REFERENCES:
patent: 3541598 (1970-11-01), Dousset
patent: 3744652 (1973-07-01), Rieschel
patent: 3749363 (1973-07-01), Hauser
Firma Josef Haamann, Hebe-und Transporttechnik
Smith Al Lawrence
Watson Robert C.
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