Strike off method for automatically leveling and compacting sand

Details Strike off method for automatically leveling and compacting sand Strike off method for automatically leveling and compacting sand

1980-01-21

1981-04-21

Spruill, R. L.

Metal founding

Process

With measuring, testing, inspecting, or condition determination

164 37, 164154, 164208, 164211, B22C 1502, B22C 1102

Patent

active

042627303

ABSTRACT:
The specification discloses a strike off apparatus for leveling and compacting mounds of sand extending above the upper edges of open-top mold boxes of varying heights carried in succession along a pathway. A pair of pivotally supported rollers extend across the pathway. A sensor determines the height of a sand mound in a mold box before it reaches the rollers. An elevating mechanism responsive to the sensor adjusts the rollers to a height so that they level and compact the sand mound as the mold box is carried thereunder. A control system including electrical and hydraulic circuits is provided for automatically controlling the cyclical operation of the apparatus.

REFERENCES:
patent: 400893 (1889-04-01), Bird
patent: 1759728 (1930-05-01), Backon
patent: 1828882 (1931-10-01), Tabor et al.
patent: 2869189 (1959-01-01), Pirsig

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