Abstract: A manually operated bullet casting machine comprising a mold assembly that is raised to a pouring position by means of a crank and filled from an overhead melting pot through the activation of a lever. The bullets are trimmed and ejected from the mold assembly as the crank is returned to its lowered position.

Abstract: A friction heat generator in which opposed inner and outer cylinders are each provided with a plurality of pins. The pins extend into a chamber formed by reason of the spaced relationship of the cylinders. A heat exchange fluid such as a high-boiling point liquid in one embodiment and water in an other embodiment is contained in such chamber. Rotation of the inner cylinder with respect to the outer cylinder causes the projecting pins to move past each other so as to impart an agitation or churning to the fluid thus creating frictional heat.