Excavating – Peat excavators
Patent
1984-11-08
1985-11-26
Crowder, Clifford D.
Excavating
Peat excavators
44 28, 1986891, E21C 4900
Patent
active
045547505
ABSTRACT:
A method of collecting peat from peat field by loosening peat from a peat field in layers, characterized in that the peat to be picked up is loosened from its bed by fastening it to a filter surface by means of negative pressure and the peat is removed from the filter surface after the displacement of uplifting of said surface. A method wherein peat is removed from the filter surface by means of positive pressure. A method wherein the peat layer that is fastened to the filter surface and in which the top and bottom layers are not mixed with each other is sheared into a top and a bottom layer and the bottom layer is allowed to drop back on the field. An apparatus for collecting peat from a peat field wherein the apparatus comprises a body supported by wheels and/or rollers, and loosening means for loosening a peat layer from a peat field, wherein the loosening means comprises a drum coated with a filter material which is provided with perforations and has a negative pressure chamber therein.
REFERENCES:
patent: 2130116 (1938-09-01), Blydenburgh
patent: 2827749 (1958-03-01), Patten
patent: 2837042 (1958-06-01), Laval, Jr.
patent: 2920355 (1960-01-01), Clark
patent: 3139972 (1964-07-01), Kochalski
patent: 3395467 (1968-08-01), Allen et al.
patent: 3776593 (1973-12-01), Kuhlmann-Schaefer et al.
patent: 4207907 (1980-06-01), Dyett
Crowder Clifford D.
Mueth Joseph E.
Satoturve Oy
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