Excavating – Peat excavators
Patent
1974-12-23
1976-04-20
Pellegrino, Stephen C.
Excavating
Peat excavators
37126AC, B60P 136
Patent
active
039508668
ABSTRACT:
An elevating-type scraper for earth-moving purposes having an open fronted bowl which includes a pair of spaced vertical side sheets, back wall and floor, the bowl being supported by a pair of draft members extending from the tractor-supported draft frame. An apron extends transversely between the side sheets in the front portion of the bowl and carries a scraper blade. An elevator is rearwardly inclined over the apron for conveying loosened soil from the blade into the bowl. A strike-off member is hinged, in fixed position, to the front edge of the floor to the rear of the apron. The apron is pivoted to the bowl for forward swinging movement to actuate the striker and to create sizable discharge opening ahead of the floor for dumping of the material collected in the bowl, the discharged material being leveled smoothly over the entire bowl width. It is a feature of the construction that a small amount of apron movement suffices to swing the scraper balde clear of the ground so that upon controlling the tilt of the bowl the striker balde may perform a shallow fullwidth scraping and "clean up" function, scraping up soil into the bowl which is then acted upon by the elevator to cause the soil to be deposited at the rear of the bowl and permitting more finished and accurate contouring. A cam or stop mechanism is interposed between the apron and the strike-off member so that the latter is completely released to assume its working position during the initial portion of movement of the apron and is moved to horizontal transport position during the final restoring movement of the apron. Means are provided on the apron for swinging the elevator upwardly to keep the same clear of the apron as the latter swings forwardly and upwardly.
REFERENCES:
patent: 3474547 (1969-10-01), Campbell et al.
patent: 3483640 (1969-12-01), Anderson et al.
patent: 3484960 (1969-12-01), Kokaly et al.
patent: 3660914 (1972-05-01), Bechman et al.
Pellegrino Stephen C.
Westinghouse Air Brake Company
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