Metal deforming – By or with work-constrainer and/or manipulated work-forcer
Patent
1981-03-06
1982-01-12
Larson, Lowell A.
Metal deforming
By or with work-constrainer and/or manipulated work-forcer
72705, B21D 112
Patent
active
043098959
ABSTRACT:
The invention relates to arrangements for straightening damaged vehicle bodies by means of straightening devices which pull and/or press, which is of the kind having a transportable alignment bar equipped with retractable wheels, said alignment bar during a straightening operation being lowered to rest on a floor joist and being fastened in a conventional way to this joist with bolt connections or the like, said alignment bar consisting of a baseplate and at least two upright wall elements attached thereto, which together form a substantialy U-shaped profile with a longitudinally extending guideway for at least one straightening assembly displaceably mounted in or on the alignment bar and comprising at least one upright beam for attachment of the straightening devices.
The invention is characterised in that the straightening assembly is constructed as a rolling carriage which is displaceably mounted in or on at least two parallel guideways formed in or on the wall elements, and in that the rolling carriage is designed to carry out longitudinal displacement movements in both directions by means of a servo-controlled operating device attached to the alignment bar and having a line of action extending longitudinally between the said wall elements.
REFERENCES:
patent: 1676263 (1928-07-01), Hawkins
patent: 2140686 (1938-12-01), Bennett
patent: 3689030 (1972-09-01), Backus
patent: 3777537 (1973-12-01), Samuelsson et al.
patent: 4068519 (1978-01-01), Baringer
Josam Lastbilteknik AB
Larson Lowell A.
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