Abstract: A carriage supported tool for manipulating a heavy object including a mobile carriage assembly having a carriage supported on wheels, an elongated operating arm, and an elongated clamp-assembly support boom. Both the boom and the arm are attached to the carriage to form a lever with the carriage acting as a fulcrum. The clamp assembly is coupled to the boom by a chain and hook. The clamp assembly includes a plurality of adjustable jaw sets for engaging a heavy object, such as a manhole frame, which is to be moved.

Abstract: A clip for supporting a construction guide tube on a stringline rod which is adjustably clamped to a ground stake. The clip has a curved saddle shaped in the form of an approximate semi-circle. The saddle is sized to receive and retain the tube with a relatively tight press fit. The saddle is integrally attached to a tubular socket which is part of the clip. The socket has a bore sized for relatively tight insertion on the stringline rod. A method for using a plurality of the clips to form a curved guide is also described.

Abstract: A compound clamp having two crossed resilient yokes formed from an integral metal piece. The yokes comprise a flat base section for the two yokes, two long resilient and apertured arms projecting from a first set of opposite sides of the base section to define a first generally concave long yoke configuration, and two short resilient and apertured arms projecting from a second set of opposite sides of the base section to define a second generally concave short yoke configuration. The insertion of a first elongated element through the apertures of the long yoke and insertion of a second elongated element through the apertures of the short yoke effects the adjustable cross clamping of the two elongated elements.