Abstract: A clamp device for transferring a construction material capable of eliminating manual handling of the construction material prior to transferring of the construction material, leading to labor saving. First and second brackets are connected to each other through a joint and a second bracket is engaged with a clamp. The first bracket is suitably mounted on an arm of a civil engineering machine such as a hydraulic shovel and the second bracket is provided with guide slits, in which shafts or pins of the clamp are engagedly fitted.

Abstract: An attachment for loading and unloading a constructional material capable of substantially improving working efficiency and accomplishing labor saving. A pair of holding arm are pivotally mounted in a manner to be laterally spaced from each other on an arm mounting bracket arranged on a lower surface of a bracket mounted on an arm of a hydraulic shovel, between which a hydraulic cylinder is arranged, resulting in a constructional material being supported between or on the holding arms. Thus, force required for supporting the constructional material can be finely controlled as desired to prevent the material from being broken or damaged due to the application of excessive force thereto.

Abstract: A paved asphalt stripping and digging bucket apparatus is disclosed which is capable of effectively carrying out the stripping-off and digging of a paved asphalt. In the apparatus, a bucket connected to an arm and a hydraulic cylinder of a tractor shovel has a bottom surface formed into a shape having a radius when it is viewed sideways, to thereby facilitate the pivotal penetration of pawls of the bucket between the asphalt and a sublayer and allow the pawls to act as a lever on which the fulcrum is on the sublayer.