Abstract: An easy-open wall is provided for a container and comprises curvilinear score means in such wall defining at least the major part of the peripheral outline of a panel which is partially severable from the wall to define a dispensing opening in the wall. A tab is attached in a nondetachable manner against the wall outwardly of the panel with the tab having a forward portion which overlies part of the panel and having a rear portion. The rear portion is easily grasped and lifted to urge the forward portion against the panel to thereby sever the major portion of said panel along the score means and move it within the container with a portion of the wall holding the panel securely thereto. The tab may be provided with means for fastening it flatly against the wall after using the tab to sever the panel.

Abstract: An easy-open construction for a container wherein a panel principally defined by a rupturable score line in a wall is opened by operating a tab having one end adapted to press against the panel at a position spaced from the score line and overlying only a small portion of the opening left by the panel in its opened position. The other end of the tab is liftable to open the panel and is returnable directly to its original position next to the wall. The tab and panel remain secured to the wall after the panel has been moved to its open position.

Abstract: An improved wet caustic process of the Bayer method for the extraction of alumina from bauxite containing amounts of both goethite and a monohydrated alumina wherein lime is added only after the bauxite slurry has been heated to a digestion temperature of at least 200.degree.C.

Abstract: An aluminum-silicon brazing composition containing 0.05 to 0.3% lead by weight, with silicon in the range of 7 to 14% and magnesium in the range of 0.2 to 2%, preferably the composition being employed as a cladding layer on a magnesium-containing aluminum base core alloy.

Abstract: An aluminum-silicon brazing composition containing 0.05 to 0.3% tin by weight, with silicon in the range of 7 to 14% and magnesium in the range of 0.2 to 2%, preferably the composition being employed as a cladding layer on a magnesium-containing aluminum base core alloy.

Abstract: An interior lining system for aluminum reduction cell anodes comprising strips of flexible sheet material supplied in roll form with adjacent strips disposed in laterally overlapping relationship between the anode and its casing.

Abstract: A carbon baking furnace is provided with a furnace effluent filter using as the filter medium a carbonaceous material of the type employed in making green carbon bodies to be baked in the furnace, and the used filter material is recovered in a form suitable for making such bodies. The filter unit includes a filter medium supply tube extending vertically downwardly into an enclosed funnel-shaped housing. An effluent inlet tube is coaxially arrayed within the filter medium supply tube. Fresh filter material is added to renew a bed thereof in the funnel-shaped housing, through the filter medium supply tube, and used filter material is withdrawn therefrom via a valve located at the base of the housing. Effluent from the furnace enters the filter via the effluent inlet tube, rises upwardly through the bed of filter material, disposed generally in the region where the filter material leaves the filter medium supply tube, and exits via an outlet tube located atop the funnel-shaped housing.

Abstract: A cable stranding apparatus wherein back tension on wires drawn from spools thereof and helically wound around a central core is controlled by positive drive means controlling the speed of rotation of each spool about its own axis in a controlled proportion to the speed of rotation of the central shaft of such apparatus about its axis. This controlling of the speed of rotation of each spool about its axis is varied during operation of the apparatus in response to means sensing the back tension on at least one of the spool wires. As a result, the back tension on the wire from the spool controls the speed of spool rotation, and thus frees the wire from the effects of frictional problems at high speeds, and from the effects of variations of outer diameter of the wire on the spool as the wire is progressively unwound from the spool.