Adjustable length upper guide member

Machine element or mechanism – Elements – Pitmans and connecting rods

Patent

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Details

280482, 403107, B60D 700

Patent

active

042953898

ABSTRACT:
An adjustable length upper guide member for the hitch attachment of a tractor has an outer tubular guide element within which is telescopingly positioned an inner guide element so as to be relatively displaceable thereto. A housing on the outer guide element has a pair of jaws pivotally mounted therein and the jaws each have first arms which are engageable with annular grooves on the inner guide element and second arms which form actuating cams facing each other. An operating lever has an eccentric portion within the housing and one side of the eccentric portion is engageable against the housing and the other side of the eccentric portion engageable with the actuating cams so that pivoting of the lever causes the eccentric portion to act upon the cams and pivot the jaws to a disengaged position. A support lever is pivotally connected to the operating lever so as to support the operating lever in the position in which the jaws are disengaged.

REFERENCES:
patent: 721023 (1903-02-01), Cosper
patent: 1185127 (1916-05-01), Ollard
patent: 1312942 (1919-08-01), Anderson
patent: 2887929 (1959-05-01), Farmer
patent: 3157416 (1964-11-01), Sandbakken
patent: 3384937 (1968-05-01), Muncke
patent: 3404901 (1968-10-01), Rau
patent: 3837753 (1974-09-01), Weiste
patent: 4016684 (1977-04-01), Urda
patent: 4126057 (1978-11-01), von Allworden et al.

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