Excavating – Peat excavators
Patent
1981-01-30
1982-03-02
Eickholt, E. H.
Excavating
Peat excavators
37 53, E01H 500
Patent
active
043172989
ABSTRACT:
A scraper device, which is powered into forward travel or motion by a tractor that pushes a scraper blade of the device in advance of the tractor, allows the cutting blade to be inclined in the vertical relative to the travelling surface of the ice, on which the device travels. The blade is adjusted into a predetermined inclination of between 8 and 10 degrees relative to the horizontal of the ice surface, while also being adjustable in angle, relative to the line or path of scraping travel at 90.degree. (or orthoginal thereto) or to 15.degree. either side of the line or path of travel as disclosed. Such a device is particularly useful in scraping a rough or pebbled surface of a sheet of ice as is common in curling rink sheets whereby the sheet of ice may thereafter be reconditioned (sprayed with water so as to be pebbled) according to methods commonly known.
REFERENCES:
patent: 148816 (1874-03-01), Fisher
patent: 1106951 (1914-08-01), Langer
patent: 1600336 (1926-09-01), Jarmin
patent: 3107446 (1963-10-01), Messinger
patent: 4014116 (1977-03-01), Baechler
"Principles of Metallographic Laboratory Practice" Kehl, McGraw-Hill, 3rd ed., 1949, pp. 229-242.
"Elements of Material Science" van Vlack, Addison-Wesley Publishing Co., 1960, pp. 460-461.
"Engineering Reference Manual" General Motors Institute, Product Engineering Dept., 1961, Section 2, p. F-17.
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