PURPOSE: To enlarge the bottom surface of a tub, and increase its conveying quantity by rotating or moving scrapers in sliding so as to be brought into contact with the bottom wall of the tub in the case of moving while suspending the outside edge parts of the plural number of scrapers arranged right/left by means of respective right/left endless chains so as not to cross over a boundary line.
CONSTITUTION: Right/left scrapers 9 are arranged so that respective inside edge parts are opposite to each other under a condition capable of moving in sliding on the bottom walls 1a and 1b, and are suspended by means of right/left endless chains 3 so as to be rotatable in the vertical direction by means of dead weight. When the endless chains 3 move inside of lower stage guide rails 4b, the scrapers 9 rotate by means of the dead weight so as to be brought into contact with the right bottom walls 1b of a tub 1, and move in sliding on the right bottom walls 1b of the tub by being drived by means of the endless chains 3, and push-send materials to be conveyed. When the endless chains 3 move inside of guide rails 4a, the scrapers 9 rotate so as to be suspended by means of the dead weight, and move in the air by being driven by means of the endless chains 3, so that they hardly become an obstacle to put the materials to be conveyed into the tub 1.
YASUKAWA MASARU
YASUKAWA SOJI
YAMADA KAORU
