Abstract: A levelling device for producing a smooth surface on a sett paving bed is constructed, with a view to easy handling and neat working, so that the rule can lift the excess material with a cutting action by a projecting cutting edge and a rising ramp surface. With a collecting trough and with rollers to support the levelling rule, a transport truck for excess material can be provided at the same time.

Abstract: Apparatus for the setting of paving blocks includes a movable chassis, an outrigger arm mounted on the chassis for heightwise adjustment, and grab tong devices suspended from the outrigger arm, the grab tong devices each being operable to grip a group of paving blocks laterally. Each of the grab tong devices has opposed jaws, one of which is fixedly mounted and the other of which is movably mounted, and linkage means are provided to operably mount the movable jaw such that upon suspension of the grab tong device from the outrigger arm with paving blocks disposed between the opposed jaws, the linkage means is operable to effect a clamping action on the paving blocks to thereby provide for lifting of the paving blocks with the clamping force being proportional to the weight being lifted.