Excavating – Railway graders – Side former
Patent
1976-04-22
1977-09-06
Eickholt, E. H.
Excavating
Railway graders
Side former
172 45, 37DIG20, E02F 500
Patent
active
040458938
ABSTRACT:
An automatic planer comprising hinged fore and rear frames, a scoop with a cutting edge, a running gear, a planer dip angle pickup and a ground level pickup, an engagement mechanism of a prime-mover engine clutch, mainly tractor. The dip angle pickup is connected by means of one electrohydraulic distributor to a hydraulic cylinder joining the rear and fore frames and the scoop is secured on the fore frame and provided with side walls joined by a bottom plate in their rear part and a back wall, which can move in slideways parallel to the bottom plate and is connected to the fore frame by means of another hydraulic cylinder in its turn coupled by means of another electrohydraulic distributor to the ground level pickup positioned in front of the scoop cutting edge.
REFERENCES:
patent: 2154503 (1939-04-01), French et al.
patent: 2755721 (1956-07-01), Rusconi
patent: 2934078 (1960-04-01), Gurries et al.
patent: 2952245 (1960-09-01), Curlett et al.
patent: 3052997 (1962-09-01), Holland
patent: 3093946 (1963-06-01), Pitt et al.
Bratyshev Igor Petrovich
Dmitrievsky Nikolai Vasilievich
Feinzilber Mikhail Leibovich
Garbuzov Zalman Eremeevich
Korelin Vladimir Fedorovich
Adams Bruce L.
Burns Robert E.
Eickholt E. H.
Lobato Emmanuel J.
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