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AssigneeFours Picard
InventorsAndre Le Lan, Jose de Freitas
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A furnace grate roller, mainly for incinerating refuse, with a tubular casing formed by rings of bars separated by blow gaps of set width, is of conventional structure, comprising a cylindrical cage framework with T-shape cross-section longitudinal members disposed along its generatrices and a casing formed of groups of rings separated by gaps for blowing combustion-supporting air. The rings are segmented into arcuate bars which extend between the longitudinal members. To limit relative movement of the bars while allowing them some play the bars are attached at one end by a notch to the flange of a longitudinal member and are secured in place by bosses on an intermediate member bolted longitudinally to the longitudinal member. The bars have recesses at their end contiguous with the intermediate member into which the bosses are inserted. In this way the bars are attached with limited capacity for movement relative to the roller in the axial, radial and peripheral directions.
Furnace grate roller intended mainly for incinerating refuse and comprising a cascade of rollers driven in rotation about parallel horizontal axes, each roller comprising a cylindrical cage framework, with longitudinal members disposed between two flanges along generatrices regularly spaced around the periphery and a tubular casing formed by a plurality of groups of circular rings generally in planes perpendicular to the axis and in axial sequence from one flange to the other, gaps being provided between the rings for blowing combustion-supporting air, while the rings are segmented, comprising a plurality of arcuate bars which are mounted with play between two adjacent longitudinal members, and intermediate members associated with the respective groups of rings and fixed to the longitudinal members so as to limit relative axial movement of the bars in the groups, each intermediate member being fixed longitdinally to a longitudinal member over the axial dimension of a group of rings, between contiguous bar ends, the intermediate member and the contiguous bar ends having respective and complementary nesting configurations adapted to limit the relative movement of the bar ends in the axial, radial and peripheral directions.
Dependencies are inferred from the claim text.