OPERATING MANUAL FOR GOSSET: A GENERAL- PURPOSE PROGRAM FOR CONSTRUCTING EXPERIMENTAL DESIGNS (SECOND EDITION).

A rotary table is provided defining at least three peripherally spaced open-ended vertically extending sleeve-type cavities spaced equally radially outwardly from and about the axis of rotation of the table and a soil receiving chamber is stationarily supported and opens downwardly in a location with which the upper portions of the cavities are successively closely registrable from beneath upon angular displacement of the table. The chamber is disposed at a first stationary station and second and third stationary stations are also defined about the axis in position for registry with second and third cavities of the table when the first cavity thereof is registered with the soil receiving chamber. The second station has a hydraulic ram supported therefrom for downward displacement into and upward retraction from a rotary table cavity registered therewith from beneath and the third station has a hydraulical ram mounted downwardly extendible and upwardly retractable ejection head supported therefrom for downward displacement into and upward retraction from the rotary table cavity registered therewith. The rotary table is supported from a frame including a spring extended and hydraulically retracted latch pin for coaction with peripheral latch keeper notches formed in the rotary table equal in number to the table cavities and spaced relative to the latter whereby seating of the latch pin in successive notches will key successive cavities of the table in registry with the soil receiving chamber, the ram and the ejection head.

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