Abstract: A pivot assembly for the damper vane of a hot water baseboard heater. The pivot asembly has a base which slides into the channels of the damper vane and a projection which snaps into a hole on a respective support bracket of the baseboard. Fingers of the projection spread on one side of the bracket while a pair of resilient arms of the pivot assembly are braced against the other side of the bracket.

Abstract: A lock core rotatable in a housing is formed with an axially extending key passage, transverse guide slots, and an axially inwardly open bore. A bolt displaceable in the bore between a locked position and a unlocked position has radially open grooves aligned with the slots in the locked position. The inner bolt end can directly engage in an inwardly open seat formed in the housing or with a ball engageable in such a seat to lock the core in the housing. Tumbler plates in the slots are formed with control edges and holes alignable with the bore in a freeing position. The plates are displaceable into blocking positions with the holes offset at least partially from the bore and engaging in the respective grooves. A key has a plurality of respective bit notches engageable with the control edges on engagement of the key in the passage.

Abstract: An apparatus for controlling the web tension in a perforation-welding system for making bags from synthetic resin foil webs in which whistling noises are eliminated by passing the web over a wall of a polygonal duct having an air outlet opening to which compressed air is fed. The air cushion and hence the spacing of the web from the wall is measured by an ultrasonic detector on the opposite of the web.

Abstract: The invention relates to a cutting insert (10) for material-removing machining, especially for milling, turning or punching, with at least one cutting edge (12) and at least one chamfer (15) into which project depressions, or recesses (17) adjacent at a distance from the cutting edge and narrow them locally. To permit a very soft cut, stabilise the cutting edge (12) and attain high feeds, them are additional depressions (13) or recesses parallel to the depressions extending to the cutting edge and/or interrupting it for further narrowing the chamfer sections.