liittoimevasar, mille langevad osad (vasarapea, ülemine pinn või -stants) tõstetakse ja kiirendatakse täiendavalt auru jõul (vt liitoimevasar), a type of drop hammer in which the ram is raised for the each stroke by a double-action steam cylinder and the energy delivered to the workpiece is supplied by the velocity and weight of the ram and attached upper die driven downward by steam pressure (see: power-driven hammer)