Abstract: A hydraulically operated device for applying a force to a component, for example to tighten a component such as a nut comprises a square peg to engage the nut, first hydraulic means in the form of a motor to rotate the square peg rapidly and second hydraulic means in the form of a piston and co-operating arm arrangement to rotate the pegs slowly with a substantial force.

Abstract: There is described a method for continuously electrodepositing with high current density, a coating metal on a metal sheet, which comprises moving by means of a movable cathode the metal sheet pressed thereagainst, in front of an anode inside a zone that comprises an electrolyte for transferring the coating metal, in which the cathode current is distributed uniformly over that portion of the metal sheet which moves in the area for metal transfer to the cathode in such a way as to cause a current density which is substantially equal in every point of said sheet portion.

Abstract: A centrifugal shotting turbine having easily replaceable blades shaped so as to project shot at a high rate of ejection in a concentrated jet. The turbine comprises a plurality of curved blades, each having a convex-concave working surface and longitudinal fillets extending from opposite edges thereof. The fillets fit into corresponding grooves in the flanges between which the blades are interposed and are secured therein by bearing pins and springs.

Abstract: The present invention relates to an installation for ramming the material constituting the refractory lining of a metallurgical vessel.The ramming installation comprises several ramming elements mounted on an arm horizontally shiftable on a support secured to a column. The column carries a monitoring table above the support and is vertically shiftable on a gantry frame. The gantry frame rolls horizontally relative to the shell of the vessel. The shell of the vessel is mounted on a turntable to which a generally reciprocatory rotary movement is imparted.