Abstract: Machine for obtaining cells for electric storage batteries, comprising an apparatus for feeding two continuous strips of dielectric material, a first and a second apparatus for distributing first electrodes of the same polarity and a third apparatus for distributing between the two strips second electrodes with opposite polarity with respect to the first electrodes. The machine further includes a folding head which receives, from the feeding apparatus, the two strips with the second electrode interposed, and is movable between a first position in which it receives a first electrode from the first distribution apparatus, and a second position (B), in which it receives a first electrode from the second distribution apparatus, in order to form a stack of composite layers alternated with the electrodes.

Abstract: Machine (1) for obtaining cells for electric storage batteries, comprising an apparatus (3) for feeding two continuous strips (4) of dielectric material, provided with coupling means (8) for coupling the two strips (4) in their extension; a first and a second apparatus (5?, 5?) for distributing first electrodes (10) of the same polarity and a third apparatus (11) for distributing second electrodes (12) with opposite polarity with respect to the first electrodes (10). The machine comprises a folding head (6) provided with a stacking surface (7) adapted to receive the two strips (4) from the feeding apparatus (3). The third distribution apparatus (11) is adapted to transfer the second electrodes (12) to the coupling means (8), between the two strips (4), spaced from each other along the extension of the strips (4). The feeding apparatus (3) is adapted to release, to the folding head (6), the pair (13) of strips (4) with the second electrodes (12) interposed.

Abstract: An improved process for the resolution of (+)-6-methoxy-.alpha.-methyl-2-naphthaleneacetic acid into the corresponding enantiomers by using L-threo-(+)-2-amino-1-(4-nitrophenyl)-1,3-propanediol and L-threo-(+)-2-amino-1-(4-methylmercaptophenyl)-1,3-propanediol.

Abstract: The invention relates to a process for the resolution of mixtures of D and L-6-methoxy-alpha-methyl-2-naphthaleneacetic acid in their respective antipodes.L-threo(+)-2-amino-1-p-nitrophenyl-1,3-propandiol is proposed as new resolving agent.

Abstract: The invention relates to a process for preparing a spironolactone, having increased biological activity, by precipitation with water from a solution with preferably organic solvents at a temperature between 0.degree. and 30.degree. C. and under vigorous stirring.