The connector consists of a tube ending in a conical female pipe socket (1) contg. n helical grooves, e.g. four grooves. A second tube ends in a male spigot (2) contg. n complementary grooves, e.g. four grooves. In a radial view, each groove summit is displaced radially w.r.t. the adjacent grooves by a dimension (a) which is at least equal to the fraction 1/n of the variation (VR) of the radius of...

The method is for printing a running material strip (1) in accordance with a pattern, and uses a printing roller (3) operable between active and inactive positions. The roller (3), on receipt of a signal from a guide unit (17) reading the strip pattern, is moved to its active position, locating against the running strip (1). This causes the roller (3) to turn to its pattern point on the strip, and...

The present invention relates to a tool for providing holes in one end panel of a cylindrical tin of metal sheet, preferably a beer can. The invention is characterized in that the tool comprises a body 2 of a bendable, stiff material, e.g. metal strip, formed as an open circle. The diameter of this is somewhat larger than the diameter of the sort of can for which the tool is intended. The ends of ...

Minerals or metals are separated from a mixture of crushed ore, aq. soln., and flotation agent by passing the mixture from an inlet through free fall into a container to entrap air during the free fall and is encourage the development of a large quantity of froth. - Used in cascade flotation process for recovery of minerals or metals from ore. The separator unit can float much coarser materials an...

A centrifugal coupling, by which centrifugal force can be exploited in order to cause an operational connection between a drive coupling half and a driven coupling half. The coupling is of the type, which is fitted with a fixed spring, radial moving, counterweight (5) whose friction surfaces press against a friction surface in the coupling's driven part. The counterweight (5) is so shaped that the...