Block laying machine
AssigneeTerrafix Erosion Control Products, Inc.
InventorRobert E. Crowe
Life of this patent
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Abstract
A machine for assisting in the laying of courses of blocks to form a ground covering layer in erosion control systems has a flexible apron on which the blocks are laid, a frame attached to one side of the apron, and two spaced and independently actuable pusher bar assemblies, which can act between the frame and the blocks to position the blocks, steer the machine, and withdraw the apron from beneath the blocks.
Claims6
A machine for laying interlocking blocks on a prepared surface comprising a thin, flexible, rectangular apron upon which successive courses of blocks may be laid extending parallel to and commencing at one marginal edge, said apron presenting a low frictional resistance to movement of the blocks over its upper surface and to movement of its lower surface over the prepared surface, a frame connected to a second marginal edge of the apron opposite said one marginal edge, at least two laterally spaced pusher bars overlying the apron and extending substantially parallel to said marginal edges, each pusher bar being engageable with a different part of the same course of blocks, a retractable actuator acting between each pusher bar and the frame and operable so as to push its associated bar and the frame apart, and means for operating each of said actuators independently.
Dependencies are inferred from the claim text.