Abstract: A colored, anodized aluminum-base article including an aluminum-base substrate, and first and second anodized aluminum oxide films overlaid thereon. The inner, second film has a hardness of about 330 Hv or more, while the outer, first film is more porous than the second film and has a hardness of about 270 Hv or less. The first film is colored with a coloring agent. The article is prepared by anodizing an aluminum-base substrate in an electrolyte bath at a temperature of 20.degree.-40.degree. C. and, subsequently at a temperature not higher than 10.degree. C., the resultant substrate having two types of anodic aluminum oxide films formed thereon being subjected to a coloring treatment.

Abstract: The disclosed automatically meshing sheet winch has a drum to be driven either directly or indirectly through a reduction gear by a main shaft, and a rope guide which includes an internal gear operatively related to another internal gear formed on a fixed base frame of the winch through a gear mounted on the main shaft, whereby the rope guide can be set at any desired angular position without modifying the position of the base frame.

Abstract: The disclosed speed-shift apparatus is for a sheet winch with a drum rotatably mounted on a base and can effect the shift of the speed-change ratio and the winch winding by one hand. A one-way transmission means having pawls and pawl-engaging grooves is provided between an input shaft and the winch drum. An interrupting member is rotatably carried by the base so as to selectively disengage said pawls from said pawl-engaging grooves and the interrupting means also has grooves for engaging said pawls.