Abstract: A small, lightweight, portable cooking stove that utilizes alcohol as fuel and is suitable for backpacking, hunting, camping and similar activities. The cooking stove includes a combustion chamber which encloses, contains and regulates the entire combustion process. The stove also includes an efficient fuel vaporizer, which is adapted to perform in unison with the combustion chamber, to effect the metered and efficient mixing of the air and fuel vapor. An integral, simple and convenient means is provided to vary the intensity and pattern of the heat output, thereby controlling the cooking performance of the stove. The stove achieves high heat output and efficiency, low fuel consumption, and superior cooking performance in a small, lightweight, portable, convenient, simple and integrated assembly.

Abstract: The invention provides a method of machining a rare earth alloy at high machining preciseness and high efficiency. In a step of grinding a block of a rare earth alloy with a grinding wheel having, on a peripheral portion thereof, a grinding edge including diamond abrasive particles, a coolant with surface tension of 25 mN/m through 60 mN/m is supplied to the grinding edge with the grinding wheel rotated.

Abstract: A stoneworking or cutting device for texturing the surface of stones, in particular, concrete slabs, has a tool holder in a swing frame with a number of stoneworking or cutting tools, whereby each tool is activated individually. To produce the striking force, a number of flyweights are mounted on the swing frame so that they can rotate, whereby the swing frame itself is mounted so that its height can be adjusted in a horizontally movable base carriage. Striking pins corresponding to the individual tools in the tool holder are made to oscillate by the flyweights to activate the tools which work the stone.