Abstract: First and second semi-spherical molds are arranged for securement relative to one another in a mirror image relationship to receive and mold a popcorn ball workpiece therewithin. The first and second semi-spherical molds include respective first and second handle members that are arranged in a radially oriented relationship relative to the first and second molds and are diametrically aligned when the first and second molds are secured together.

Abstract: A catalytic converter for use in the exhaust system of an internal combustion engine having a rigid outer canister with a catalyst support disposed therein for movement between a first position adjacent in inlet end of the canister and a second position located in spaced relationship with said inlet end. In its first position, the substrate seals the inlet thereby forcing the entire exhaust flow through the fluid flow passages within the catalyst support which are in axial alignment with the converter inlet. The effect of forcing the totality of flow reduced volume of the substrate to the entire thermal energy of the exhaust stream thereby assisting in a reduction in the catalyst light-off time. Following catalyst light-off, the catalyst support is moved to its second, spaced position in which the entire frontal area of the converter is exposed to the exhaust flow thereby lowering backpressure of the converter and preventing converter overtemperature problems.

Abstract: A port scavenged two cycle engine with a separate source of pressurized air has a valve between each port and the air supply to provide a high blowdown pulsing scavenging flow to the cylinders similar to that of a crankcase scavenged engine. Various arrangements with additional features are disclosed.

Abstract: A window security means for double hung casement windows includes a lower tube, open at its upper end and having a metal box rigidly fastened to its lower end, with the box being open at its bottom and shaped to fit over the window lock on one movable part of the window. An upper tube is telescoped within the lower tube and adapted at its upper end to engage another movable part of the window. A fastener is provided to fasten the upper tube immovably within the lower tube, and a shield can surround the fastener and limit access to the fastener to access essentially from one direction.

Abstract: A waste heat recovery system which can be attached to, and made part of, an existing thermal oxidizer-stack system, at minimum cost, without reducing the reliability of the existing oxidizer-stack system. It comprises a conventional heat transfer means, which is connected at its input through a refractory lined first conduit, to an opening through the wall of the first stack of the thermal oxidizer-stack system. The outlet of the heat exchanger is connected through a second conduit to an induced draft means, which can be a conventional blower, the outlet of which is connected to a second stack. The action of the induced draft blower is to cause inflow of hot stack gases through the first conduit and through the heat exchanger and to pass the cooled stack gases out the second stack. A first temperature sensor is placed in the stack between the inlet from the thermal oxidizer and the opening where the gases are drawn into the first conduit. A second thermal sensor is placed in the first conduit.

Abstract: Apparatus for burning waste polymers of selected combustion characteristics. A vertical or horizontal combustion assembly includes a base cylindrical portion having water-cooled walls to maintain a selected temperature by removal of the heat of combustion, a plurality of pipes for injecting combustion air tangentially into the interior space, a loading port in the wall of the base section and a burner for igniting the waste matter injected through the loading port. Downstream of the base section is a ceramic choke which has an axial opening therethrough of lesser diameter than an internal diameter of the base section followed by an afterburning chamber, which like the base section, has a plurality of air inlet pipes tangential to the chamber and a burner port for igniting vapors in the upper chamber. Combustion air is controlled so that less than stoichiometric air is injected into the lower chamber to provide a reducing atmosphere, with excess combustion air in the afterburning section.