GB675505A - Improvements relating to earth working implements - Google Patents

Abstract

675,505. Earth scrapers. BRISCOE, E. V. Aug. 18, 1950. [April 11, 1950] No. 20544/50. Class 68 (i). [Also in Group X] For cleaning ditch banks and grading soil there is provided on a tractor a vertically adjustable frame which pivotally supports the rear of one or more grader blades each of which can extend forwardly to lie alongside the tractor and can be swung to extend in a forwardly and outwardly diverging relation to the tractor and can incline downwardly, whilst suspension means of adjustable length are provided between the front end of the blade and the tractor, and power means are provided to effect such adjustments selectively and independently. At the rear 13 of the tractor 2 is pivoted a U-shaped frame 1 which can be raised and lowered by jacks 8 between limits set by adjustable bolts 23 extending between upstanding plates 22 on a tongue 19 held in the clevis 18 of a drawbar. Pivotally secured at each rear corner of the frame 1 is an arm 28 that supports a beam 25 by a universal connection comprising shafts 26, 27. On the beam 25 is tiltably mounted the scraper blade. The outer end of the blade, on which is positioned an end wing 51, is supported by a winchoperated cable 31 which regulates the downward inclination of the blade. Bars may be provided between each end of the tractor and the outer end of the blade and the arm 28 to hold the grader assembly in required position. There is also mounted on the arm 28 by a universal connection a spreader blade 44 to distribute material delivered from the grader blade.