Grading apparatus and framework therefor

Details Grading apparatus and framework therefor Grading apparatus and framework therefor

1983-03-01

1985-01-01

Crowder, Clifford D.

Excavating

Snow or ice removing or grooming by portable device

Railway clearer

1727995, E02F 500

Patent

active

044909292

ABSTRACT:
Land grading apparatus comprising earth cutting blade mounted on wheeled carrier intended to be towed behind prime mover. Blade is fitted to elongate framework extending transversely of towing direction and comprising elongate blade carrier, two parallel tubes disposed above and to the rear of the blade carrier, two framework end structures and stiffening members. Carrier comprises a wheeled axle extending across apparatus behind the framework. Framework is suspended from a beam extending over midpart of framework longitudinally of towing direction. Beam is connected at front end to towing bar for connection to prime mover and is supported at rear end from the axle by hydraulic ram operable to raise and lower framework.

REFERENCES:
patent: 1339548 (1920-05-01), Cox
patent: 1911511 (1933-05-01), Jordan
patent: 2015880 (1935-10-01), Wold
patent: 2582032 (1952-01-01), Harmon et al.
patent: 2841898 (1958-07-01), Sampson
patent: 2992537 (1961-07-01), Callahan
patent: 3261118 (1966-07-01), Litherland
patent: 4189009 (1980-02-01), Welch
patent: 4217962 (1980-08-01), Schaefer
patent: 4393608 (1983-07-01), Hodge

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