Abstract: A nut sheller which embodies a base having a lower nut holder on which a nut to be shelled may be positioned, a spring operated hammer operable upwardly to strike the nut holder, an opposing inertia anvil operable from a remote nut loading position to a lowered position into engagement with the nut to be shelled, and a lever adapted to be manually moved to bring the inertia anvil down and then automatically cause the hammer to operate, the lever being operably connected to cock the hammer against its spring as the lever is moved back to its remote nut loading position. Shielding means are provided, moved under the control of the operating lever so that the shell fragments fall into a nut bowl arranged below and around the nut holder. Thus the entire nut shelling operation may be accomplished by one hand, merely by moving the lever in one direction and then returning it.