Abstract: An improved method of deforming an integral hollow rivet from an outwardly projecting bubble portion formed in sheet material is provided comprising the step of deforming a generally circular portion of the sheet material within the area of the bubble portion inwardly of the general plane of the sheet material, during the step of deforming the bubble portion into a hollow rivet.

Abstract: A wire enamel coating composition capable of forming an insulative coating on a wire to provide a solderability of less than 1 second at temperatures as low as 285-315.degree. C and a thermoplastic flow temperature of at least 230.degree. C comprising a predetermined ratio of an imidized polyester resin having a free hydroxyl content of 4-10% by weight and a blocked isocyanate; at least one aromatic solvent, and a catalyst.

Abstract: A wire enamel coating composition capable of forming an insulative coating on a wire to provide a solderability of less than 1 second at temperatures as low as 285.degree.-315.degree. C. and a thermoplastic flow temperature of at least 230.degree. C. comprising a predetermined ratio of a polyurethane ester resin having a free hydroxyl content of 4-10% by weight and a blocked isocyanate; at least one aromatic solvent, and a catalyst.

Abstract: A method is disclosed for forming an end shell to allow a reduction of the gauge of the end shell without loss of pressure holding capabilities or, alternatively, to increase the pressure resistance of the container to which the end shell is secured. This method comprises the steps of providing a sheet metal end shell having a substantially planar central wall portion, a first curved portion around the periphery of the central wall portion connecting the central wall portion with an integral frustoconical wall portion, a peripheral flange projecting radially outwardly from and integral with the frustoconical wall portion, and exterior and interior surfaces respecting its intended use on a container; supporting the central wall portion with a first supporting means disposed against the interior surface thereof opposite said frustoconical wall portion substantially concentrically of the end shell to within less than approximately 97.

Abstract: A process is provided for substantially completely converting carbon monoxide in waste gas into carbon dioxide in a combustion chamber. This process comprises the steps of supplying fuel to the combustion chamber in an amount sufficient to maintain a temperature greater than the combustion temperture of carbon monoxide therein, feeding waste gas containing carbon monoxide to the combustion chamber, measuring the percentage of carbon monoxide in the waste gas, feeding free oxygen to the combustion chamber, exhausting the gas from the chamber, measuring the actual percentage of free oxygen in the exhaust gas, calculating an optimum percentage of free oxygen in the exhaust gas, and adjusting the volume of free oxygen being fed to the combustion chamber in an amount sufficient to produce the optimum percentage of free oxygen in the exhaust gas.

Abstract: An improved tear-off closure for a container is disclosed having a circular top end wall, a closure skirt depending from the top end wall, an annular rim projecting radially outwardly from the bottom of the closure skirt and an integral concentric pull ring around the annular rim. The pull ring comprises a curled bead having a radially inwardly open slot therein into which a terminal edge portion of the annular rim projects to secure the pull ring in a fixed position of the base of the closure skirt prior to sealing of the closure on a container. A method and tools for forming such a closure are also disclosed.

Abstract: An improved tear-off closure for a container comprising a top end wall, a depending closure skirt around the top end wall and a pull ring around the bottom edge of the closure skirt. The closure has a pair of score lines therein traversing the skirt and the top end wall to define a tear strip across the closure. The pull ring is integrally connected to the tear strip at the bottom of the closure skirt. A line of separation between the pull ring and the closure skirt extends from a location adjacent the score line on one side of the tear strip around the closure skirt to a location adjacent the score line on the other side of the tear strip. The curved terminal ends of the line of separation are spaced from the tear strip laterally of the score lines on both sides of the tear strip.

Abstract: A process is disclosed for burning hydrocarbons in the vapors emitted from contaminated metallic scrap in a remelt furnace having a molten bath therein. The furnace comprises a charging chamber and a heating chamber separated by a wall. The wall is provided with at least one lower opening and at least one upper opening through which the chambers are in communication above and below the level of molten metal. Scrap is charged into the charging chamber where molten metal ablatively melts the charge. Oil and other surface contaminants evolving from the charge are drawn through the upper opening in the wall into the heating chamber by maintaining a pressure in the heating chamber less than, or negative in relation to, the pressure in the charging chamber. The hydrocarbon vapors burn in the heating chamber and contribute heat of combustion. Controlling the level of pressure differential between the heating chamber and the charging chamber facilitates substantial benefits in efficiency and economy.

Abstract: An improved sheet metal container and method of forming the same are provided in which the container comprises a body member and an end member wherein the body member is provided with a body flange extending generally radially outwardly at the end thereof, and the end member is provided with a wall which fits within the body member and an end flange extending generally radially outwardly at the end thereof rolled into a seam with the body flange. The body flange is curled at its terminal end against a coating provided on the metal surface of the body member and the end flange is curled at its terminal end against a coating provided on the metal surface of the end member to isolate the metals having different electrode potentials in order to resist galvanic corrosion.

Abstract: A positioning device is disclosed comprising a jack screw having a stationary guide housing, an externally helically threaded shaft through the housing and a retainer threadably engaged onto the shaft, and a rotatable ratchet having a head mounted on a top portion of the shaft. The positioning device further comprises at least one fluid cylinder and a piston fitting inside a mating chamber in the cylinder, a piston rod extending from the piston and connected to the ratchet and means for reciprocally driving the piston in the chamber. Each stroke of the piston and attached piston rod displaces the ratchet arm rotating the ratchet head and the shaft connected thereto, thereby displacing the retainer along the shaft.

Abstract: An improved tear-off closure for a container is disclosed having a circular top end wall, a closure skirt depending from the top end wall, an annular rim projecting radially outwardly from the bottom of the closure skirt and an integral concentric pull ring around the annular rim. The pull ring comprises a curled bead having a radially inwardly open slot therein into which a terminal edge portion of the annular rim projects to secure the pull ring in a fixed position of the base of the closure skirt prior to sealing of the closure on a container. A method and tools for forming such a closure are also disclosed.

Abstract: The invention relates to methods and means for combining two merging streams of small parts having heads and shanks comprising progressing each of the streams in the same general direction and with the heads aligned and the shanks transverse to the direction of progression. The streams, or paths, are lead at different levels and in different horizontal positions at the last part of the progression and then the streams or paths are progressively merged at the last part of the progression in at least the horizontal direction so the shanks of the parts in one path become interposed between the heads of the parts in the other path as the paths are merged into a single path without stoppage.

Abstract: A method is disclosed for reforming a metallic can end to increase the pressure holding capabilities of the container to which the can end is seamed comprising the steps of increasing the depth of an annular groove with respect to a substantially planar center wall and reducing the radius of curvature of a curved portion at the bottom of the annular groove between an inner wall on the inside of the annular groove and an integral chuckwall on the outside of the annular groove.

Abstract: An expandable junction is provided for connecting primary enclosures in a system for fluidizing granular materials. The enclosures have permeable floors therein and a fluidizing medium is supplied upwardly through the floors. The junction comprises a secondary enclosure spaced between and at a lower elevation than the primary enclosures, having a permeable floor therein, and a fluidizing medium is supplied upwardly through the floor, and juxtaposed flexible tubes connecting the secondary enclosure with the primary enclosures at a location closely adjacent the end of the permeable floor in each primary enclosure.

Abstract: A clamping tool for disposing a resilient clip over clamping structures adapted to be secured together. The tool comprises a seating member adapted to receive the head of the clip, a C-shaped arm connecting the seating member to a handle assembly and a toggle assembly. The toggle assembly has a movable shaft extending into a bore provided in the handle assembly and in the direction of the seating member. A lever arm is pivotally connected to the shaft to direct the shaft against one side or edge of the clamping structures such that a clip received in the seating member and disposed over the clamping structures located between the shaft and the seating member, will, upon application of adequate manual force, extend over and secure the clamping structures together.

Abstract: An improved method of forming and construction for a tabless, digitally openable sheet metal container component including at least two inwardly displaceable, adjacently disposed opening panels. The opening panels are substantially rigid and are located within an integral deflectable portion projecting outwardly from the general plane of the surface wall of the container component and having a common deflectable surface between the opening panels in the form of a raised bridge of metal therebetween designed to respond to digitally applied pressure creating stress sufficient to initiate substantially simultaneous fracture of frangible webs which define the loci of separation of the opening panels. The container component is formed by opposed die sets which, in a single operation, extrude metal from between opposing die surfaces to produce a thin residual of metal in the frangible web around each opening panel and form the deflectable portions around the opening panels.