| http://www.w3.org/ns/prov#value | - uring the motion of said conveying means, said rotating means including a sprocket carried by each shaft adapted for meshing engagement with a generally stationary rack, means for aligning each sprocket for meshing engagement with said stationary rack, said aligning means including cam means preceeding said stationary rack, and cam follower means carried by each shaft for engaging said cam means a
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