" Suspended tuyere stock removal device "ABSTRACTThe manipulation of components of a fluid trans-mission system, particularly portions of a tuyere stockthrough which heated gas is delivered to a blastfurnace is facilitated by a manually operated andmovable device which is suspended by means of rollersin guide rails ( 16, 18 ) beneath the circular hot-airpipe positioned around the blast furnace. The devicecomprises a movable carriage ( 36 ), a pivotal support( 70 ) suspended from said carriage and pivotableabout a vertical axis, one or more supporting frames( 108, 208 ) slidably suspended from said pivotalsupport ( 70 ) and pivotable about an horizontal axisand component handling means on said carriage ( 36 )and said supporting frames for releasable supportingand positioning the components of the gas injectionsystem.
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