Abstract: A hammer-ripper system for use with the mounting on the boom arm, of an excavator/backhoe, of a conventional hydraulically-operated hammer fitted with a “shortened” chisel. A “ripping-type” device like a chisel tooth mounts to a lever with its pivot point attached to the side of the hammer. One end of the lever extends to be impacted by under the shortened chisel, while the other end extends inward. Thus, the tooth end can be placed under embedded boulders and used to hammer (using the transmitted reciprocating action of the hydraulic hammer), and pry or break up the boulders from underneath with the combined hammering and ripping action.

Abstract: A hand-held tiller is adapted for use in loosening and breaking up the soil and is made up of a skid, an elongated handle extending forwardly of the skid with a drill motor at one end of the handle which is drivingly connected into a power transmission drive for operating a crank having a plurality of crank arms and vertically extending tines, the tines being sequentially driven by reciprocation of the crank arms into and out of the soil as the machine is drawn behind the operator.