Abstract: A grip device for locking metallic bodies destined for machining by means of machine tools, comprising at least one accommodation body for the bottom of a cylindrical container, the accommodation body being supported by a table that can move with respect to a supporting frame, the accommodation body accommodating an annular membrane that has at least one portion which can be deformed in a radial direction, the annular membrane being associated, on opposite sides with respect to the deformable portion, with a respective presser body, an actuator being provided which is adapted to move the presser bodies on command mutually closer and apart; the actuation elements comprise mechanical elements for kinematic transmission which can be operated following the relative movement of the movable table with respect to the supporting frame.

Abstract: A grip device for locking metallic bodies destined for machining by means of machine tools, comprising at least one accommodation body for the bottom of a cylindrical container, the accommodation body being supported by a table that can move with respect to a supporting frame, the accommodation body accommodating an annular membrane that has at least one portion which can be deformed in a radial direction, the annular membrane being associated, on opposite sides with respect to the deformable portion, with a respective presser body, an actuator being provided which is adapted to move the presser bodies on command mutually closer and apart; the actuation elements comprise mechanical elements for kinematic transmission which can be operated following the relative movement of the movable table with respect to the supporting frame.

Abstract: A process for the direct production of soap having the desired concentration of fatty acid from neutral fats by reacting, at a temperature higher than 100° C. and under pressure, an aqueous solution of an alkaline hydroxide or mixture of alkaline hydroxides having a quantity in moles equal to that of the fatty acids contained in the fat and/or oil and a quantity of water equal to that required to obtain the desired concentration of fatty acids in the final soap and heated at a temperature sufficient to obtain a clear solution, with the fat and/or oil previously heated at a temperature at least equal to that of the aqueous solution of the alkaline hydroxide.

Abstract: A process for the production of soap from neutral fats by reaction of fats and/or oils with an alkaline hydroxide or a mixture of alkaline hydroxides, consisting in reacting, at a temperature exceeding 100° C. and under pressure an aqueous solution of the alkaline hydroxide or a mixture of alkaline hydroxides, having a quantity in moles of hydroxide substantially equal to the one of the fatty acids contained in the fat and/or oil and a quantity of water equal to the one necessary to obtain the required concentration of fatty acids in the final soap heated at a sufficient temperature to obtain a clear solution, with the fat and/or oil previously heated at a temperature at least equal to the one of the aqueous solution of the alkaline hydroxide.

Abstract: Mulitube falling-film reactor for the continuous sulfonation and sulfation of fluid-state organic substances by reaction with gaseous sulphuric anhydride (SO.sub.3), has each tubular element non-permanently fixed to the plates and has a nozzle (10) fitted in a sleeve (20) integral with a reaction tube (23). The nozzle (10) can slide within the sleeve (20) and may be placed at different heights with respect to the latter, forming with the end-piece (14) a cylindrical crown opening (18) of fixed width and variable height. Such arrangement permits to control the delivery of the fluid to be sulfonated. The opposite end of each tube (23) fits into a double-plate seal system.