Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1977-11-21
1979-02-06
Whitehead, Harold D.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
209291, 209270, B24B 3102
Patent
active
041376757
ABSTRACT:
A cylindrical sand reclaimer drum for removing spent bonding contaminants and refuse from chemically bonded foundry molding sand and the like. The cylindrical drum is rotatably mounted along its longitudinal axis and is supported in a substantially horizontal inclined position along its longitudinal axis. The cylindrical drum has an intake opening at the elevated end thereof to receive the contaminated sand and process it through a plurality of internal compartments containing spherical or cube shaped abrasion media. The compartments are formed by a plurality of spaced-apart circular divider panels mounted on the central spindle or shaft of the cylindrical drum and which are perpendicular to the longitudinal axis thereof and are axially adjustable therealong. A plurality of spaced-apart openings are provided along the circumferential edge of each of the divider panels. Each opening is provided with a selectively adjustable gate so that the size of the opening can be adjusted as desired so that the size of the openings in each succeeding divider panel is smaller than those in the preceding divider panel. Thus, each divider panel removes refuse of a particular size from the sand as it passes therethrough. The lowermost final compartment has screen panels provided in the circumferential wall thereof which form the discharge opening for the clean reclaimed sand. The lower end wall of the cylindrical drum is provided with discharge openings through which the contaminants and refuse are discarded. Each compartment is provided with an access panel in the wall of the cylindrical drum so that spherical or cube shaped abrasion media can be selectively added or removed therefrom. Motor drive means are provided in association with the cylindrical sand reclaimer drum so as to rotate the drum so as to cause the contaminated sand to advance therethrough. Cyclone air removal suction means are provided in association with the sand reclaimer drum which are adapted to remove free bonding materials such as porous burnt resin particles which have been abraded from the sand during passage of the contaminated sand mass through the rotary sand reclaimer.
REFERENCES:
patent: 1889989 (1932-12-01), Hughes
patent: 1897156 (1933-02-01), Wells
patent: 1966312 (1934-07-01), Rafetto
patent: 2286132 (1942-06-01), Walle
patent: 2359944 (1944-10-01), Schummer
Cina Ronald A.
Kluge Albert D.
Roberts Corporation
Whitehead Harold D.
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