Abstract: A clothing article is disclosed which comprises a garment having interconnected shoulders, back and front sides adapted to cover the body of a wearer. The front sides of the garment have separate front edges including a facing portion folded over the front edges to the interior of the garment. The front sides and back define a continuous bottom edge for the garment with the back having a vent formed therein extending from the bottom edge part way up the back. The facing along the front edges of the garment includes a selectively openable flap portion extending upwardly a predetermined distance from the bottom edge of the garment and means are provided for selectively securing the flap portion of the facing in a first position to the inside of the front edges of the garment to form a coat and other means are provided for selectively securing the flaps in a second position to the inside of the back of the garment adjacent the vent to form a culotte.

Abstract: Improved zircaloy tubes for PWR reactors are produced by a method and apparatus by controlling spirality, that is, the spiral formation of the wall-thickness eccentricity. In the past, that spiral formation has caused the tubes to bow during use, and the present invention permits the maintenance of that spiral formation to acceptable limits. The hollow or workpiece is positioned upon a cylindrical mandrel and is advanced step-by-step through a work zone between a pair of rolls having grooves which define the work zone. The workpiece is turned through a predetermined angle on the mandrel prior to each rocking cycle. The present invention involves controlling the angle at which the metal working forces are exerted so as to minimize the turning moment or torque effect which results in producing the spiral formation.