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An apparatus for screeding and leveling coverings and coatings compounded with a binding agent, more specially a synthetic resin binding agent, is made up of a front straight edge for leveling and a back straight edge for screeding, the two straight edges being joined together as a parallelogram hav

An apparatus for screeding and leveling coverings and coatings compounded with a binding agent, more specially a synthetic resin binding agent, is made up of a front straight edge for leveling and a back straight edge for screeding, the two straight edges being joined together as a parallelogram having a driving system for moving them backwards and forwards lengthways. As part of the apparatus there is a track-laying vehicle and a system for vertical adjustment of the straight edges.

대표청구항 ▼

In an apparatus for leveling and screeding a covering compounded with a binding agent, such as surfacing material for roads, having a front leveling straight edge and a screeding straight edge disposed in spaced relationship to the rear of said leveling straight edge, said straight edges being conne

In an apparatus for leveling and screeding a covering compounded with a binding agent, such as surfacing material for roads, having a front leveling straight edge and a screeding straight edge disposed in spaced relationship to the rear of said leveling straight edge, said straight edges being connected together by a system of link members and pivot pins to form a parallelogram, and a power driving system operably connected to at least one of said straight edges to selectively reciprocate said at least one straight edge in the direction of its length with respect to the other straight edge, the improvement comprising, a track-laying vehicle, a support frame supported on said track-laying vehicle, two threaded rods threadedly engaged in said support frame, means operatively engaging said straight edges with said threaded rods so that said straight edges are moved by said vehicle over the surface to be covered and are vertically movable in relation to said vehicle when said rods are rotated, a thread-free portion on the lower end of each rod freely slidably engageable with said straight edges, means to pivotably support said straight edges and means to support said screeding straight edge for vertical floating motion in use.